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coral / mtk-gst-plugins-bad-debian / 78a1622fb7b8d4943e96517fde28a012427289ba / . / sys / uvch264 / gstuvch264_src.c
blob: af9da691b51b978710aa9d34fd5df7643f1ed926 [file] [log] [blame]
/*
* GStreamer
*
* Copyright (C) 2012 Cisco Systems, Inc.
* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-uvch264-src
*
* A camera bin src element that wraps v4l2src and implements UVC H264
* Extension Units (XU) to control the H264 encoder in the camera
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "gstuvch264_src.h"
#include <gst/video/video.h>
#include <linux/uvcvideo.h>
#include <linux/usb/video.h>
#include <sys/ioctl.h>
#include <string.h>
#include "gstuvch264_src.h"
#include <gudev/gudev.h>
#include <libusb.h>
#ifndef LIBUSB_CLASS_VIDEO
#define LIBUSB_CLASS_VIDEO 0x0e
#endif
typedef struct
{
int8_t bLength;
int8_t bDescriptorType;
int8_t bDescriptorSubType;
int8_t bUnitID;
uint8_t guidExtensionCode[16];
} __attribute__ ((__packed__)) xu_descriptor;
#define GUID_FORMAT "02X%02X%02X%02X-%02X%02X%02X%02X-"\
"%02X%02X%02X%02X-%02X%02X%02X%02X"
#define GUID_ARGS(guid) guid[0], guid[1], guid[2], guid[3], \
guid[4], guid[5], guid[6], guid[7], \
guid[8], guid[9], guid[10], guid[11], \
guid[12], guid[13], guid[14], guid[15]
#define USB_VIDEO_CONTROL 1
#define USB_VIDEO_CONTROL_INTERFACE 0x24
#define USB_VIDEO_CONTROL_XU_TYPE 0x06
enum
{
PROP_0,
/* uvch264_src properties */
PROP_COLORSPACE_NAME,
PROP_JPEG_DECODER_NAME,
PROP_NUM_CLOCK_SAMPLES,
/* v4l2src properties */
PROP_NUM_BUFFERS,
PROP_DEVICE,
PROP_DEVICE_NAME,
/* Static controls */
PROP_INITIAL_BITRATE,
PROP_SLICE_UNITS,
PROP_SLICE_MODE,
PROP_IFRAME_PERIOD,
PROP_USAGE_TYPE,
PROP_ENTROPY,
PROP_ENABLE_SEI,
PROP_NUM_REORDER_FRAMES,
PROP_PREVIEW_FLIPPED,
PROP_LEAKY_BUCKET_SIZE,
/* Dynamic controls */
PROP_RATE_CONTROL,
PROP_FIXED_FRAMERATE,
PROP_MAX_MBPS, /* read-only */
PROP_LEVEL_IDC,
PROP_PEAK_BITRATE,
PROP_AVERAGE_BITRATE,
PROP_MIN_IFRAME_QP,
PROP_MAX_IFRAME_QP,
PROP_MIN_PFRAME_QP,
PROP_MAX_PFRAME_QP,
PROP_MIN_BFRAME_QP,
PROP_MAX_BFRAME_QP,
PROP_LTR_BUFFER_SIZE,
PROP_LTR_ENCODER_CONTROL,
};
/* In caps : frame interval (fps), width, height, profile, mux */
/* Ignored: temporal, spatial, SNR, MVC views, version, reset */
/* Events: LTR, generate IDR */
enum
{
/* action signals */
SIGNAL_GET_ENUM_SETTING,
SIGNAL_GET_BOOLEAN_SETTING,
SIGNAL_GET_INT_SETTING,
LAST_SIGNAL
};
static guint _signals[LAST_SIGNAL];
/* Default values */
#define DEFAULT_COLORSPACE_NAME "videoconvert"
#define DEFAULT_JPEG_DECODER_NAME "jpegdec"
#define DEFAULT_NUM_CLOCK_SAMPLES 0
#define DEFAULT_NUM_BUFFERS -1
#define DEFAULT_DEVICE "/dev/video0"
#define DEFAULT_DEVICE_NAME NULL
#define DEFAULT_INITIAL_BITRATE 3000000
#define DEFAULT_SLICE_UNITS 4
#define DEFAULT_SLICE_MODE UVC_H264_SLICEMODE_SLICEPERFRAME
#define DEFAULT_IFRAME_PERIOD 10000
#define DEFAULT_USAGE_TYPE UVC_H264_USAGETYPE_REALTIME
#define DEFAULT_ENTROPY UVC_H264_ENTROPY_CAVLC
#define DEFAULT_ENABLE_SEI FALSE
#define DEFAULT_NUM_REORDER_FRAMES 0
#define DEFAULT_PREVIEW_FLIPPED FALSE
#define DEFAULT_LEAKY_BUCKET_SIZE 1000
#define DEFAULT_RATE_CONTROL UVC_H264_RATECONTROL_CBR
#define DEFAULT_FIXED_FRAMERATE FALSE
#define DEFAULT_LEVEL_IDC 40
#define DEFAULT_PEAK_BITRATE DEFAULT_INITIAL_BITRATE
#define DEFAULT_AVERAGE_BITRATE DEFAULT_INITIAL_BITRATE
#define DEFAULT_MIN_QP 10
#define DEFAULT_MAX_QP 46
#define DEFAULT_LTR_BUFFER_SIZE 0
#define DEFAULT_LTR_ENCODER_CONTROL 0
#define NSEC_PER_SEC (G_USEC_PER_SEC * 1000)
GST_DEBUG_CATEGORY (uvc_h264_src_debug);
#define GST_CAT_DEFAULT uvc_h264_src_debug
#define gst_uvc_h264_src_parent_class parent_class
G_DEFINE_TYPE (GstUvcH264Src, gst_uvc_h264_src, GST_TYPE_BASE_CAMERA_SRC);
#define GST_UVC_H264_SRC_VF_CAPS_STR \
GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ";" \
"image/jpeg," \
"width = " GST_VIDEO_SIZE_RANGE "," \
"height = " GST_VIDEO_SIZE_RANGE "," \
"framerate = " GST_VIDEO_FPS_RANGE
#define GST_UVC_H264_SRC_VID_CAPS_STR \
GST_UVC_H264_SRC_VF_CAPS_STR ";" \
"video/x-h264, " \
"width = " GST_VIDEO_SIZE_RANGE ", " \
"height = " GST_VIDEO_SIZE_RANGE ", " \
"framerate = " GST_VIDEO_FPS_RANGE ", " \
"stream-format = (string) { byte-stream, avc }, " \
"alignment = (string) { au }, " \
"profile = (string) { high, main, baseline, constrained-baseline }"
static GstStaticPadTemplate vfsrc_template =
GST_STATIC_PAD_TEMPLATE (GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME,
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_UVC_H264_SRC_VF_CAPS_STR));
static GstStaticPadTemplate imgsrc_template =
GST_STATIC_PAD_TEMPLATE (GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME,
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_NONE);
static GstStaticPadTemplate vidsrc_template =
GST_STATIC_PAD_TEMPLATE (GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME,
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_UVC_H264_SRC_VID_CAPS_STR));
static void gst_uvc_h264_src_dispose (GObject * object);
static void gst_uvc_h264_src_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_uvc_h264_src_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static gboolean gst_uvc_h264_src_event (GstPad * pad, GstObject * parent,
GstEvent * event);
static gboolean gst_uvc_h264_src_send_event (GstElement * element,
GstEvent * event);
static gboolean gst_uvc_h264_src_construct_pipeline (GstBaseCameraSrc *
bcamsrc);
static gboolean gst_uvc_h264_src_set_mode (GstBaseCameraSrc * bcamsrc,
GstCameraBinMode mode);
static gboolean gst_uvc_h264_src_start_capture (GstBaseCameraSrc * camerasrc);
static void gst_uvc_h264_src_stop_capture (GstBaseCameraSrc * camerasrc);
static GstStateChangeReturn gst_uvc_h264_src_change_state (GstElement * element,
GstStateChange trans);
static GstPadProbeReturn gst_uvc_h264_src_buffer_probe (GstPad * pad,
GstPadProbeInfo * info, gpointer user_data);
static GstPadProbeReturn gst_uvc_h264_src_event_probe (GstPad * pad,
GstPadProbeInfo * info, gpointer user_data);
static void gst_uvc_h264_src_pad_linking_cb (GstPad * pad,
GstPad * peer, gpointer user_data);
static gboolean gst_uvc_h264_src_query (GstPad * pad, GstObject * parent,
GstQuery * query);
static void v4l2src_prepare_format (GstElement * v4l2src, gint fd,
GstCaps * caps, gpointer user_data);
static void fill_probe_commit (GstUvcH264Src * self,
uvcx_video_config_probe_commit_t * probe, guint32 frame_interval,
guint32 width, guint32 height, guint32 profile,
UvcH264StreamFormat stream_format);
static gboolean xu_query (GstUvcH264Src * self, guint selector, guint query,
guchar * data);
static void set_rate_control (GstUvcH264Src * self);
static void set_level_idc (GstUvcH264Src * self);
static void set_bitrate (GstUvcH264Src * self);
static void set_qp (GstUvcH264Src * self, gint type);
static void set_ltr (GstUvcH264Src * self);
static void update_rate_control (GstUvcH264Src * self);
static guint32 update_level_idc_and_get_max_mbps (GstUvcH264Src * self);
static void update_bitrate (GstUvcH264Src * self);
static gboolean update_qp (GstUvcH264Src * self, gint type);
static void update_ltr (GstUvcH264Src * self);
static gboolean gst_uvc_h264_src_get_enum_setting (GstUvcH264Src * self,
gchar * property, gint * mask, gint * default_value);
static gboolean gst_uvc_h264_src_get_boolean_setting (GstUvcH264Src * self,
gchar * property, gboolean * changeable, gboolean * def);
static gboolean gst_uvc_h264_src_get_int_setting (GstUvcH264Src * self,
gchar * property, gint * min, gint * def, gint * max);
static void
gst_uvc_h264_src_class_init (GstUvcH264SrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseCameraSrcClass *gstbasecamerasrc_class;
parent_class = g_type_class_peek_parent (klass);
gobject_class = G_OBJECT_CLASS (klass);
gstelement_class = GST_ELEMENT_CLASS (klass);
gstbasecamerasrc_class = GST_BASE_CAMERA_SRC_CLASS (klass);
gobject_class->dispose = gst_uvc_h264_src_dispose;
gobject_class->set_property = gst_uvc_h264_src_set_property;
gobject_class->get_property = gst_uvc_h264_src_get_property;
gstelement_class->change_state = gst_uvc_h264_src_change_state;
gstelement_class->send_event = gst_uvc_h264_src_send_event;
gstbasecamerasrc_class->construct_pipeline =
gst_uvc_h264_src_construct_pipeline;
gstbasecamerasrc_class->set_mode = gst_uvc_h264_src_set_mode;
gstbasecamerasrc_class->start_capture = gst_uvc_h264_src_start_capture;
gstbasecamerasrc_class->stop_capture = gst_uvc_h264_src_stop_capture;
GST_DEBUG_CATEGORY_INIT (uvc_h264_src_debug, "uvch264src",
0, "UVC H264 Compliant camera bin source");
gst_element_class_set_static_metadata (gstelement_class,
"UVC H264 Source",
"Source/Video",
"UVC H264 Encoding camera source",
"Youness Alaoui <youness.alaoui@collabora.co.uk>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&vidsrc_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&imgsrc_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&vfsrc_template));
/* Properties */
g_object_class_install_property (gobject_class, PROP_COLORSPACE_NAME,
g_param_spec_string ("colorspace-name", "colorspace element name",
"The name of the colorspace element",
DEFAULT_COLORSPACE_NAME, G_PARAM_CONSTRUCT | G_PARAM_READWRITE |
GST_PARAM_MUTABLE_READY | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_JPEG_DECODER_NAME,
g_param_spec_string ("jpeg-decoder-name", "jpeg decoder element name",
"The name of the jpeg decoder element",
DEFAULT_JPEG_DECODER_NAME, G_PARAM_CONSTRUCT | G_PARAM_READWRITE |
GST_PARAM_MUTABLE_READY | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NUM_CLOCK_SAMPLES,
g_param_spec_int ("num-clock-samples", "num-clock-samples",
"Number of clock samples to gather for the PTS synchronization"
" (-1 = unlimited)",
0, G_MAXINT, DEFAULT_NUM_CLOCK_SAMPLES,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | GST_PARAM_MUTABLE_PLAYING |
G_PARAM_STATIC_STRINGS));
/* v4l2src proxied properties */
g_object_class_install_property (gobject_class, PROP_NUM_BUFFERS,
g_param_spec_int ("num-buffers", "num-buffers",
"Number of buffers to output before sending EOS (-1 = unlimited)",
-1, G_MAXINT, DEFAULT_NUM_BUFFERS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE,
g_param_spec_string ("device", "device",
"Device location",
DEFAULT_DEVICE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
g_param_spec_string ("device-name", "Device name",
"Name of the device", DEFAULT_DEVICE_NAME,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
/* Static controls */
g_object_class_install_property (gobject_class, PROP_INITIAL_BITRATE,
g_param_spec_uint ("initial-bitrate", "Initial bitrate",
"Initial bitrate in bits/second (static control)",
0, G_MAXUINT, DEFAULT_INITIAL_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_SLICE_UNITS,
g_param_spec_uint ("slice-units", "Slice units",
"Slice units (static control)",
0, G_MAXUINT16, DEFAULT_SLICE_UNITS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_SLICE_MODE,
g_param_spec_enum ("slice-mode", "Slice mode",
"Defines the unit of the slice-units property (static control)",
UVC_H264_SLICEMODE_TYPE,
DEFAULT_SLICE_MODE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_IFRAME_PERIOD,
g_param_spec_uint ("iframe-period", "I Frame Period",
"Time between IDR frames in milliseconds (static control)",
0, G_MAXUINT16, DEFAULT_IFRAME_PERIOD,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_USAGE_TYPE,
g_param_spec_enum ("usage-type", "Usage type",
"The usage type (static control)",
UVC_H264_USAGETYPE_TYPE, DEFAULT_USAGE_TYPE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_ENTROPY,
g_param_spec_enum ("entropy", "Entropy",
"Entropy (static control)",
UVC_H264_ENTROPY_TYPE, DEFAULT_ENTROPY,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_ENABLE_SEI,
g_param_spec_boolean ("enable-sei", "Enable SEI",
"Enable SEI picture timing (static control)",
DEFAULT_ENABLE_SEI, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_NUM_REORDER_FRAMES,
g_param_spec_uint ("num-reorder-frames", "Number of Reorder frames",
"Number of B frames between the references frames (static control)",
0, G_MAXUINT8, DEFAULT_NUM_REORDER_FRAMES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_PREVIEW_FLIPPED,
g_param_spec_boolean ("preview-flipped", "Flip preview",
"Horizontal flipped image for non H.264 streams (static control)",
DEFAULT_PREVIEW_FLIPPED, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
g_object_class_install_property (gobject_class, PROP_LEAKY_BUCKET_SIZE,
g_param_spec_uint ("leaky-bucket-size", "Size of the leaky bucket size",
"Size of the leaky bucket size in milliseconds (static control)",
0, G_MAXUINT16, DEFAULT_LEAKY_BUCKET_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
/* Dynamic controls */
g_object_class_install_property (gobject_class, PROP_RATE_CONTROL,
g_param_spec_enum ("rate-control", "Rate control",
"Rate control mode (static & dynamic control)",
UVC_H264_RATECONTROL_TYPE, DEFAULT_RATE_CONTROL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_FIXED_FRAMERATE,
g_param_spec_boolean ("fixed-framerate", "Fixed framerate",
"Fixed framerate (static & dynamic control)",
DEFAULT_FIXED_FRAMERATE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MAX_MBPS,
g_param_spec_uint ("max-mbps", "Max macroblocks/second",
"The number of macroblocks per second for the maximum processing rate",
0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_LEVEL_IDC,
g_param_spec_uint ("level-idc", "Level IDC",
"Level IDC (dynamic control)",
0, G_MAXUINT8, DEFAULT_LEVEL_IDC,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_PEAK_BITRATE,
g_param_spec_uint ("peak-bitrate", "Peak bitrate",
"The peak bitrate in bits/second (dynamic control)",
0, G_MAXUINT, DEFAULT_PEAK_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_AVERAGE_BITRATE,
g_param_spec_uint ("average-bitrate", "Average bitrate",
"The average bitrate in bits/second (dynamic control)",
0, G_MAXUINT, DEFAULT_AVERAGE_BITRATE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MIN_IFRAME_QP,
g_param_spec_int ("min-iframe-qp", "Minimum I frame QP",
"The minimum Quantization step size for I frames (dynamic control)",
-G_MAXINT8, G_MAXINT8, DEFAULT_MIN_QP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MAX_IFRAME_QP,
g_param_spec_int ("max-iframe-qp", "Minimum I frame QP",
"The minimum Quantization step size for I frames (dynamic control)",
-G_MAXINT8, G_MAXINT8, DEFAULT_MAX_QP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MIN_PFRAME_QP,
g_param_spec_int ("min-pframe-qp", "Minimum P frame QP",
"The minimum Quantization step size for P frames (dynamic control)",
-G_MAXINT8, G_MAXINT8, DEFAULT_MIN_QP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MAX_PFRAME_QP,
g_param_spec_int ("max-pframe-qp", "Minimum P frame QP",
"The minimum Quantization step size for P frames (dynamic control)",
-G_MAXINT8, G_MAXINT8, DEFAULT_MAX_QP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MIN_BFRAME_QP,
g_param_spec_int ("min-bframe-qp", "Minimum B frame QP",
"The minimum Quantization step size for B frames (dynamic control)",
-G_MAXINT8, G_MAXINT8, DEFAULT_MIN_QP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_MAX_BFRAME_QP,
g_param_spec_int ("max-bframe-qp", "Minimum B frame QP",
"The minimum Quantization step size for B frames (dynamic control)",
-G_MAXINT8, G_MAXINT8, DEFAULT_MAX_QP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_LTR_BUFFER_SIZE,
g_param_spec_int ("ltr-buffer-size", "LTR Buffer size",
"Total number of Long-Term Reference frames (dynamic control)",
0, G_MAXUINT8, DEFAULT_LTR_BUFFER_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
g_object_class_install_property (gobject_class, PROP_LTR_ENCODER_CONTROL,
g_param_spec_int ("ltr-encoder-control", "LTR frames controled by device",
"Number of LTR frames the device can control (dynamic control)",
0, G_MAXUINT8, DEFAULT_LTR_ENCODER_CONTROL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_PLAYING));
_signals[SIGNAL_GET_ENUM_SETTING] =
g_signal_new_class_handler ("get-enum-setting",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gst_uvc_h264_src_get_enum_setting),
NULL, NULL, NULL,
G_TYPE_BOOLEAN, 3, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_POINTER, 0);
_signals[SIGNAL_GET_BOOLEAN_SETTING] =
g_signal_new_class_handler ("get-boolean-setting",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gst_uvc_h264_src_get_boolean_setting), NULL, NULL, NULL,
G_TYPE_BOOLEAN, 3, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_POINTER, 0);
_signals[SIGNAL_GET_INT_SETTING] =
g_signal_new_class_handler ("get-int-setting",
G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_CALLBACK (gst_uvc_h264_src_get_int_setting), NULL, NULL, NULL,
G_TYPE_BOOLEAN, 4, G_TYPE_STRING, G_TYPE_POINTER, G_TYPE_POINTER,
G_TYPE_POINTER, 0);
}
static void
gst_uvc_h264_src_init (GstUvcH264Src * self)
{
self->vfsrc =
gst_ghost_pad_new_no_target (GST_BASE_CAMERA_SRC_VIEWFINDER_PAD_NAME,
GST_PAD_SRC);
gst_pad_set_query_function (self->vfsrc,
GST_DEBUG_FUNCPTR (gst_uvc_h264_src_query));
gst_element_add_pad (GST_ELEMENT (self), self->vfsrc);
self->imgsrc =
gst_ghost_pad_new_no_target (GST_BASE_CAMERA_SRC_IMAGE_PAD_NAME,
GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (self), self->imgsrc);
self->vidsrc =
gst_ghost_pad_new_no_target (GST_BASE_CAMERA_SRC_VIDEO_PAD_NAME,
GST_PAD_SRC);
gst_pad_set_query_function (self->vidsrc,
GST_DEBUG_FUNCPTR (gst_uvc_h264_src_query));
gst_element_add_pad (GST_ELEMENT (self), self->vidsrc);
gst_pad_add_probe (self->vidsrc, GST_PAD_PROBE_TYPE_BUFFER,
gst_uvc_h264_src_buffer_probe, self, NULL);
gst_pad_add_probe (self->vfsrc, GST_PAD_PROBE_TYPE_EVENT_UPSTREAM,
gst_uvc_h264_src_event_probe, self, NULL);
gst_pad_add_probe (self->vidsrc, GST_PAD_PROBE_TYPE_EVENT_UPSTREAM,
gst_uvc_h264_src_event_probe, self, NULL);
self->srcpad_event_func = GST_PAD_EVENTFUNC (self->vfsrc);
gst_pad_set_event_function (self->imgsrc, gst_uvc_h264_src_event);
gst_pad_set_event_function (self->vidsrc, gst_uvc_h264_src_event);
gst_pad_set_event_function (self->vfsrc, gst_uvc_h264_src_event);
g_signal_connect (self->vidsrc, "linked",
(GCallback) gst_uvc_h264_src_pad_linking_cb, self);
g_signal_connect (self->vidsrc, "unlinked",
(GCallback) gst_uvc_h264_src_pad_linking_cb, self);
g_signal_connect (self->vfsrc, "linked",
(GCallback) gst_uvc_h264_src_pad_linking_cb, self);
g_signal_connect (self->vfsrc, "unlinked",
(GCallback) gst_uvc_h264_src_pad_linking_cb, self);
self->v4l2_fd = -1;
gst_base_camera_src_set_mode (GST_BASE_CAMERA_SRC (self), MODE_VIDEO);
self->main_format = UVC_H264_SRC_FORMAT_NONE;
self->main_width = 0;
self->main_height = 0;
self->main_frame_interval = 0;
self->main_stream_format = UVC_H264_STREAMFORMAT_ANNEXB;
self->main_profile = UVC_H264_PROFILE_CONSTRAINED_BASELINE;
self->secondary_format = UVC_H264_SRC_FORMAT_NONE;
self->secondary_width = 0;
self->secondary_height = 0;
self->secondary_frame_interval = 0;
/* v4l2src properties */
self->num_buffers = DEFAULT_NUM_BUFFERS;
self->device = g_strdup (DEFAULT_DEVICE);
/* Static controls */
self->initial_bitrate = DEFAULT_INITIAL_BITRATE;
self->slice_units = DEFAULT_SLICE_UNITS;
self->slice_mode = DEFAULT_SLICE_MODE;
self->iframe_period = DEFAULT_IFRAME_PERIOD;
self->usage_type = DEFAULT_USAGE_TYPE;
self->entropy = DEFAULT_ENTROPY;
self->enable_sei = DEFAULT_ENABLE_SEI;
self->num_reorder_frames = DEFAULT_NUM_REORDER_FRAMES;
self->preview_flipped = DEFAULT_PREVIEW_FLIPPED;
self->leaky_bucket_size = DEFAULT_LEAKY_BUCKET_SIZE;
/* Dynamic controls */
self->rate_control = DEFAULT_RATE_CONTROL;
self->fixed_framerate = DEFAULT_FIXED_FRAMERATE;
self->level_idc = DEFAULT_LEVEL_IDC;
self->peak_bitrate = DEFAULT_PEAK_BITRATE;
self->average_bitrate = DEFAULT_AVERAGE_BITRATE;
self->min_qp[QP_I_FRAME] = DEFAULT_MIN_QP;
self->max_qp[QP_I_FRAME] = DEFAULT_MAX_QP;
self->min_qp[QP_P_FRAME] = DEFAULT_MIN_QP;
self->max_qp[QP_P_FRAME] = DEFAULT_MAX_QP;
self->min_qp[QP_B_FRAME] = DEFAULT_MIN_QP;
self->max_qp[QP_B_FRAME] = DEFAULT_MAX_QP;
self->ltr_buffer_size = DEFAULT_LTR_BUFFER_SIZE;
self->ltr_encoder_control = DEFAULT_LTR_ENCODER_CONTROL;
}
static void
gst_uvc_h264_src_dispose (GObject * object)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (object);
if (self->usb_ctx)
libusb_exit (self->usb_ctx);
self->usb_ctx = NULL;
g_free (self->jpeg_decoder_name);
self->jpeg_decoder_name = NULL;
g_free (self->colorspace_name);
self->colorspace_name = NULL;
g_free (self->device);
self->device = NULL;
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_uvc_h264_src_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (object);
switch (prop_id) {
case PROP_COLORSPACE_NAME:
g_free (self->colorspace_name);
self->colorspace_name = g_value_dup_string (value);
break;
case PROP_JPEG_DECODER_NAME:
g_free (self->jpeg_decoder_name);
self->jpeg_decoder_name = g_value_dup_string (value);
break;
case PROP_NUM_CLOCK_SAMPLES:
self->num_clock_samples = g_value_get_int (value);
if (self->mjpg_demux)
g_object_set (self->mjpg_demux,
"num-clock-samples", self->num_clock_samples, NULL);
break;
/* v4l2 properties */
case PROP_NUM_BUFFERS:
self->num_buffers = g_value_get_int (value);
if (self->v4l2_src)
g_object_set_property (G_OBJECT (self->v4l2_src), "num-buffers", value);
break;
case PROP_DEVICE:
g_free (self->device);
self->device = g_value_dup_string (value);
if (self->v4l2_src)
g_object_set_property (G_OBJECT (self->v4l2_src), "device", value);
break;
/* Static controls */
case PROP_INITIAL_BITRATE:
self->initial_bitrate = g_value_get_uint (value);
break;
case PROP_SLICE_UNITS:
self->slice_units = g_value_get_uint (value);
break;
case PROP_SLICE_MODE:
self->slice_mode = g_value_get_enum (value);
break;
case PROP_IFRAME_PERIOD:
self->iframe_period = g_value_get_uint (value);
break;
case PROP_USAGE_TYPE:
self->usage_type = g_value_get_enum (value);
break;
case PROP_ENTROPY:
self->entropy = g_value_get_enum (value);
break;
case PROP_ENABLE_SEI:
self->enable_sei = g_value_get_boolean (value);
break;
case PROP_NUM_REORDER_FRAMES:
self->num_reorder_frames = g_value_get_uint (value);
break;
case PROP_PREVIEW_FLIPPED:
self->preview_flipped = g_value_get_boolean (value);
break;
case PROP_LEAKY_BUCKET_SIZE:
self->leaky_bucket_size = g_value_get_uint (value);
break;
/* Dynamic controls */
case PROP_RATE_CONTROL:
self->rate_control = g_value_get_enum (value);
set_rate_control (self);
update_rate_control (self);
break;
case PROP_FIXED_FRAMERATE:
self->fixed_framerate = g_value_get_boolean (value);
set_rate_control (self);
update_rate_control (self);
break;
case PROP_LEVEL_IDC:
self->level_idc = g_value_get_uint (value);
set_level_idc (self);
update_level_idc_and_get_max_mbps (self);
break;
case PROP_PEAK_BITRATE:
self->peak_bitrate = g_value_get_uint (value);
set_bitrate (self);
update_bitrate (self);
break;
case PROP_AVERAGE_BITRATE:
self->average_bitrate = g_value_get_uint (value);
set_bitrate (self);
update_bitrate (self);
break;
case PROP_MIN_IFRAME_QP:
self->min_qp[QP_I_FRAME] = g_value_get_int (value);
set_qp (self, QP_I_FRAME);
update_qp (self, QP_I_FRAME);
break;
case PROP_MAX_IFRAME_QP:
self->max_qp[QP_I_FRAME] = g_value_get_int (value);
set_qp (self, QP_I_FRAME);
update_qp (self, QP_I_FRAME);
break;
case PROP_MIN_PFRAME_QP:
self->min_qp[QP_P_FRAME] = g_value_get_int (value);
set_qp (self, QP_P_FRAME);
update_qp (self, QP_P_FRAME);
break;
case PROP_MAX_PFRAME_QP:
self->max_qp[QP_P_FRAME] = g_value_get_int (value);
set_qp (self, QP_P_FRAME);
update_qp (self, QP_P_FRAME);
break;
case PROP_MIN_BFRAME_QP:
self->min_qp[QP_B_FRAME] = g_value_get_int (value);
set_qp (self, QP_B_FRAME);
update_qp (self, QP_B_FRAME);
break;
case PROP_MAX_BFRAME_QP:
self->max_qp[QP_B_FRAME] = g_value_get_int (value);
set_qp (self, QP_B_FRAME);
update_qp (self, QP_B_FRAME);
break;
case PROP_LTR_BUFFER_SIZE:
self->ltr_buffer_size = g_value_get_int (value);
set_ltr (self);
update_ltr (self);
break;
case PROP_LTR_ENCODER_CONTROL:
self->ltr_encoder_control = g_value_get_int (value);
set_ltr (self);
update_ltr (self);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
}
}
static void
gst_uvc_h264_src_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (object);
uvcx_video_config_probe_commit_t probe;
switch (prop_id) {
case PROP_INITIAL_BITRATE:
case PROP_SLICE_UNITS:
case PROP_SLICE_MODE:
case PROP_IFRAME_PERIOD:
case PROP_USAGE_TYPE:
case PROP_ENTROPY:
case PROP_ENABLE_SEI:
case PROP_NUM_REORDER_FRAMES:
case PROP_PREVIEW_FLIPPED:
case PROP_LEAKY_BUCKET_SIZE:
fill_probe_commit (self, &probe, 0, 0, 0, 0, 0);
if (GST_STATE (self) >= GST_STATE_PAUSED) {
xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR,
(guchar *) & probe);
}
break;
default:
break;
}
switch (prop_id) {
case PROP_COLORSPACE_NAME:
g_value_set_string (value, self->colorspace_name);
break;
case PROP_JPEG_DECODER_NAME:
g_value_set_string (value, self->jpeg_decoder_name);
break;
case PROP_NUM_CLOCK_SAMPLES:
g_value_set_int (value, self->num_clock_samples);
break;
/* v4l2src properties */
case PROP_NUM_BUFFERS:
g_value_set_int (value, self->num_buffers);
break;
case PROP_DEVICE:
g_value_set_string (value, self->device);
break;
case PROP_DEVICE_NAME:
if (self->v4l2_src)
g_object_get_property (G_OBJECT (self->v4l2_src), "device-name", value);
else
g_value_set_static_string (value, "");
break;
/* Static controls */
case PROP_INITIAL_BITRATE:
g_value_set_uint (value, probe.dwBitRate);
break;
case PROP_SLICE_UNITS:
g_value_set_uint (value, probe.wSliceUnits);
break;
case PROP_SLICE_MODE:
g_value_set_enum (value, probe.wSliceMode);
break;
case PROP_IFRAME_PERIOD:
g_value_set_uint (value, probe.wIFramePeriod);
break;
case PROP_USAGE_TYPE:
g_value_set_enum (value, probe.bUsageType);
break;
case PROP_ENTROPY:
g_value_set_enum (value, probe.bEntropyCABAC);
break;
case PROP_ENABLE_SEI:
g_value_set_boolean (value,
(probe.bTimestamp == UVC_H264_TIMESTAMP_SEI_ENABLE));
break;
case PROP_NUM_REORDER_FRAMES:
g_value_set_uint (value, probe.bNumOfReorderFrames);
break;
case PROP_PREVIEW_FLIPPED:
g_value_set_boolean (value,
(probe.bPreviewFlipped == UVC_H264_PREFLIPPED_HORIZONTAL));
break;
case PROP_LEAKY_BUCKET_SIZE:
g_value_set_uint (value, probe.wLeakyBucketSize);
break;
/* Dynamic controls */
case PROP_RATE_CONTROL:
update_rate_control (self);
g_value_set_enum (value, self->rate_control);
break;
case PROP_FIXED_FRAMERATE:
update_rate_control (self);
g_value_set_boolean (value, self->fixed_framerate);
break;
case PROP_MAX_MBPS:
g_value_set_uint (value, update_level_idc_and_get_max_mbps (self));
break;
case PROP_LEVEL_IDC:
update_level_idc_and_get_max_mbps (self);
g_value_set_uint (value, self->level_idc);
break;
case PROP_PEAK_BITRATE:
update_bitrate (self);
g_value_set_uint (value, self->peak_bitrate);
break;
case PROP_AVERAGE_BITRATE:
update_bitrate (self);
g_value_set_uint (value, self->average_bitrate);
break;
case PROP_MIN_IFRAME_QP:
update_qp (self, QP_I_FRAME);
g_value_set_int (value, self->min_qp[QP_I_FRAME]);
break;
case PROP_MAX_IFRAME_QP:
update_qp (self, QP_I_FRAME);
g_value_set_int (value, self->max_qp[QP_I_FRAME]);
break;
case PROP_MIN_PFRAME_QP:
update_qp (self, QP_P_FRAME);
g_value_set_int (value, self->min_qp[QP_P_FRAME]);
break;
case PROP_MAX_PFRAME_QP:
update_qp (self, QP_P_FRAME);
g_value_set_int (value, self->max_qp[QP_P_FRAME]);
break;
case PROP_MIN_BFRAME_QP:
update_qp (self, QP_B_FRAME);
g_value_set_int (value, self->min_qp[QP_B_FRAME]);
break;
case PROP_MAX_BFRAME_QP:
update_qp (self, QP_B_FRAME);
g_value_set_int (value, self->max_qp[QP_B_FRAME]);
break;
case PROP_LTR_BUFFER_SIZE:
update_ltr (self);
g_value_set_int (value, self->ltr_buffer_size);
break;
case PROP_LTR_ENCODER_CONTROL:
update_ltr (self);
g_value_set_int (value, self->ltr_encoder_control);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (self, prop_id, pspec);
break;
}
}
/* Set dynamic controls */
static void
set_rate_control (GstUvcH264Src * self)
{
uvcx_rate_control_mode_t req;
if (!xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_GET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " RATE_CONTROL GET_CUR error");
return;
}
req.bRateControlMode = self->rate_control;
if (self->fixed_framerate)
req.bRateControlMode |= UVC_H264_RATECONTROL_FIXED_FRM_FLG;
if (!xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_SET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " RATE_CONTROL SET_CUR error");
return;
}
}
static void
set_level_idc (GstUvcH264Src * self)
{
uvcx_video_advance_config_t req;
if (!xu_query (self, UVCX_VIDEO_ADVANCE_CONFIG, UVC_GET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " VIDEO_ADVANCE_CONFIG GET_CUR error");
return;
}
req.blevel_idc = self->level_idc;
if (!xu_query (self, UVCX_VIDEO_ADVANCE_CONFIG, UVC_SET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " VIDEO_ADVANCE_CONFIG SET_CUR error");
return;
}
}
static void
set_bitrate (GstUvcH264Src * self)
{
uvcx_bitrate_layers_t req;
if (!xu_query (self, UVCX_BITRATE_LAYERS, UVC_GET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " BITRATE_LAYERS GET_CUR error");
return;
}
req.dwPeakBitrate = self->peak_bitrate;
req.dwAverageBitrate = self->average_bitrate;
if (!xu_query (self, UVCX_BITRATE_LAYERS, UVC_SET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " BITRATE_LAYERS SET_CUR error");
return;
}
}
static void
set_qp (GstUvcH264Src * self, gint type)
{
uvcx_qp_steps_layers_t req;
req.wLayerID = 0;
switch (type) {
case QP_I_FRAME:
req.bFrameType = UVC_H264_QP_STEPS_I_FRAME_TYPE;
break;
case QP_P_FRAME:
req.bFrameType = UVC_H264_QP_STEPS_P_FRAME_TYPE;
break;
case QP_B_FRAME:
req.bFrameType = UVC_H264_QP_STEPS_B_FRAME_TYPE;
break;
default:
return;
}
req.bMinQp = 0;
req.bMaxQp = 0;
if (!xu_query (self, UVCX_QP_STEPS_LAYERS, UVC_SET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " QP_STEPS_LAYERS SET_CUR error");
return;
}
if (!xu_query (self, UVCX_QP_STEPS_LAYERS, UVC_GET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " QP_STEPS_LAYERS GET_CUR error");
return;
}
req.bMinQp = self->min_qp[type];
req.bMaxQp = self->max_qp[type];
if (!xu_query (self, UVCX_QP_STEPS_LAYERS, UVC_SET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " QP_STEPS_LAYERS SET_CUR error");
return;
}
}
static void
set_ltr (GstUvcH264Src * self)
{
uvcx_ltr_buffer_size_control_t req;
if (!xu_query (self, UVCX_LTR_BUFFER_SIZE_CONTROL, UVC_GET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " LTR_BUFFER_SIZE GET_CUR error");
return;
}
req.bLTRBufferSize = self->ltr_buffer_size;
req.bLTREncoderControl = self->ltr_encoder_control;
if (!xu_query (self, UVCX_LTR_BUFFER_SIZE_CONTROL, UVC_SET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, "LTR_BUFFER_SIZE SET_CUR error");
return;
}
}
/* Get Dynamic controls */
static void
update_rate_control (GstUvcH264Src * self)
{
uvcx_rate_control_mode_t req;
if (!xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_GET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " RATE_CONTROL GET_CUR error");
return;
}
if (self->rate_control != (req.bRateControlMode &
~UVC_H264_RATECONTROL_FIXED_FRM_FLG)) {
self->rate_control = (req.bRateControlMode &
~UVC_H264_RATECONTROL_FIXED_FRM_FLG);
g_object_notify (G_OBJECT (self), "rate-control");
}
if (self->fixed_framerate != ((req.bRateControlMode &
UVC_H264_RATECONTROL_FIXED_FRM_FLG) != 0)) {
self->fixed_framerate = ((req.bRateControlMode &
UVC_H264_RATECONTROL_FIXED_FRM_FLG) != 0);
g_object_notify (G_OBJECT (self), "fixed-framerate");
}
}
static guint32
update_level_idc_and_get_max_mbps (GstUvcH264Src * self)
{
uvcx_video_advance_config_t req;
if (!xu_query (self, UVCX_VIDEO_ADVANCE_CONFIG, UVC_GET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " VIDEO_ADVANCE_CONFIG GET_CUR error");
return 0;
}
if (self->level_idc != req.blevel_idc) {
self->level_idc = req.blevel_idc;
g_object_notify (G_OBJECT (self), "level-idc");
}
return req.dwMb_max;
}
static void
update_bitrate (GstUvcH264Src * self)
{
uvcx_bitrate_layers_t req;
if (!xu_query (self, UVCX_BITRATE_LAYERS, UVC_GET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " BITRATE_LAYERS GET_CUR error");
return;
}
if (self->peak_bitrate != req.dwPeakBitrate) {
self->peak_bitrate = req.dwPeakBitrate;
g_object_notify (G_OBJECT (self), "peak-bitrate");
}
if (self->average_bitrate != req.dwAverageBitrate) {
self->average_bitrate = req.dwAverageBitrate;
g_object_notify (G_OBJECT (self), "average-bitrate");
}
}
static gboolean
update_qp (GstUvcH264Src * self, gint type)
{
uvcx_qp_steps_layers_t req;
guint8 frame_type;
req.wLayerID = 0;
switch (type) {
case QP_I_FRAME:
frame_type = UVC_H264_QP_STEPS_I_FRAME_TYPE;
break;
case QP_P_FRAME:
frame_type = UVC_H264_QP_STEPS_P_FRAME_TYPE;
break;
case QP_B_FRAME:
frame_type = UVC_H264_QP_STEPS_B_FRAME_TYPE;
break;
default:
return FALSE;
}
req.bFrameType = frame_type;
req.bMinQp = 0;
req.bMaxQp = 0;
if (!xu_query (self, UVCX_QP_STEPS_LAYERS, UVC_SET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " QP_STEPS_LAYERS SET_CUR error");
return FALSE;
}
if (!xu_query (self, UVCX_QP_STEPS_LAYERS, UVC_GET_CUR, (guchar *) & req)) {
GST_WARNING_OBJECT (self, " QP_STEPS_LAYERS GET_CUR error");
return FALSE;
}
if (req.bFrameType == frame_type) {
if (self->min_qp[type] != req.bMinQp) {
self->min_qp[type] = req.bMinQp;
switch (type) {
case QP_I_FRAME:
g_object_notify (G_OBJECT (self), "min-iframe-qp");
break;
case QP_P_FRAME:
g_object_notify (G_OBJECT (self), "min-pframe-qp");
break;
case QP_B_FRAME:
g_object_notify (G_OBJECT (self), "min-bframe-qp");
break;
default:
break;
}
}
if (self->max_qp[type] != req.bMaxQp) {
self->max_qp[type] = req.bMaxQp;
switch (type) {
case QP_I_FRAME:
g_object_notify (G_OBJECT (self), "max-iframe-qp");
break;
case QP_P_FRAME:
g_object_notify (G_OBJECT (self), "max-pframe-qp");
break;
case QP_B_FRAME:
g_object_notify (G_OBJECT (self), "max-bframe-qp");
break;
default:
break;
}
}
return TRUE;
} else {
self->min_qp[type] = 0xFF;
self->max_qp[type] = 0xFF;
return FALSE;
}
}
static void
update_ltr (GstUvcH264Src * self)
{
uvcx_ltr_buffer_size_control_t req;
if (!xu_query (self, UVCX_LTR_BUFFER_SIZE_CONTROL, UVC_GET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " LTR_BUFFER_SIZE GET_CUR error");
return;
}
if (self->ltr_buffer_size != req.bLTRBufferSize) {
self->ltr_buffer_size = req.bLTRBufferSize;
g_object_notify (G_OBJECT (self), "ltr-buffer-size");
}
if (self->ltr_encoder_control != req.bLTREncoderControl) {
self->ltr_encoder_control = req.bLTREncoderControl;
g_object_notify (G_OBJECT (self), "ltr-encoder-control");
}
}
#define STORE_MIN_DEF_MAX(type) \
*(type *)min = *((type *) (min_p + offset)); \
*(type *)def = *((type *) (def_p + offset)); \
*(type *)max = *((type *) (max_p + offset));
static gboolean
probe_setting (GstUvcH264Src * self, uvcx_control_selector_t selector,
guint offset, gint size, gpointer min, gpointer def, gpointer max)
{
guchar *min_p, *def_p, *max_p;
gboolean ret = FALSE;
__u16 len;
if (!xu_query (self, selector, UVC_GET_LEN, (guchar *) & len)) {
GST_WARNING_OBJECT (self, "probe_setting GET_LEN error");
return FALSE;
}
min_p = g_malloc0 (len);
def_p = g_malloc0 (len);
max_p = g_malloc0 (len);
if (!xu_query (self, selector, UVC_GET_MIN, min_p)) {
GST_WARNING_OBJECT (self, "probe_setting GET_MIN error");
goto end;
}
if (!xu_query (self, selector, UVC_GET_DEF, def_p)) {
GST_WARNING_OBJECT (self, "probe_setting GET_DEF error");
goto end;
}
if (!xu_query (self, selector, UVC_GET_MAX, max_p)) {
GST_WARNING_OBJECT (self, "probe_setting GET_MAX error");
goto end;
}
switch (size) {
case -1:
STORE_MIN_DEF_MAX (gint8);
ret = TRUE;
break;
case 1:
STORE_MIN_DEF_MAX (guint8);
ret = TRUE;
break;
case -2:
STORE_MIN_DEF_MAX (gint16);
ret = TRUE;
break;
case 2:
STORE_MIN_DEF_MAX (guint16);
ret = TRUE;
break;
case -4:
STORE_MIN_DEF_MAX (gint32);
ret = TRUE;
break;
case 4:
STORE_MIN_DEF_MAX (guint32);
ret = TRUE;
break;
default:
break;
}
end:
g_free (min_p);
g_free (def_p);
g_free (max_p);
return ret;
}
static gboolean
test_enum_setting (GstUvcH264Src * self, guint offset, guint size,
guint16 value)
{
uvcx_video_config_probe_commit_t cur;
uvcx_video_config_probe_commit_t req;
guchar *req_p = (guchar *) & req;
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR, (guchar *) & cur)) {
GST_WARNING_OBJECT (self, " GET_CUR error");
return FALSE;
}
req = cur;
if (size == 1)
*((guint8 *) (req_p + offset)) = (guint8) value;
else
*((guint16 *) (req_p + offset)) = value;
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_SET_CUR, req_p)) {
GST_WARNING_OBJECT (self, " SET_CUR error");
return FALSE;
}
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR, req_p)) {
GST_WARNING_OBJECT (self, " GET_CUR error");
return FALSE;
}
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_SET_CUR, (guchar *) & cur)) {
GST_WARNING_OBJECT (self, " SET_CUR error");
return FALSE;
}
if (size == 1)
return *((guint8 *) (req_p + offset)) == (guint8) value;
else
return *((guint16 *) (req_p + offset)) == value;
}
static gboolean
gst_uvc_h264_src_get_enum_setting (GstUvcH264Src * self, gchar * property,
gint * mask, gint * default_value)
{
guint8 min, def, max;
guint8 en;
gboolean ret = FALSE;
if (g_strcmp0 (property, "slice-mode") == 0) {
guint16 min16, def16, max16;
guint16 en16;
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, wSliceMode), 2,
&min16, &def16, &max16);
if (ret) {
*default_value = def16;
*mask = 0;
for (en16 = min16; en16 <= max16; en16++) {
if (test_enum_setting (self, offsetof (uvcx_video_config_probe_commit_t,
wSliceMode), 2, en16))
*mask |= (1 << en16);
}
}
} else if (g_strcmp0 (property, "usage-type") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bUsageType), 1,
&min, &def, &max);
if (ret) {
*default_value = def;
*mask = 0;
for (en = min; en <= max; en++) {
if (test_enum_setting (self, offsetof (uvcx_video_config_probe_commit_t,
bUsageType), 1, en))
*mask |= (1 << en);
}
}
} else if (g_strcmp0 (property, "entropy") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bEntropyCABAC), 1,
&min, &def, &max);
if (ret) {
*mask = (1 << min) | (1 << max);
*default_value = def;
}
} else if (g_strcmp0 (property, "rate-control") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bRateControlMode), 1,
&min, &def, &max);
if (ret) {
uvcx_rate_control_mode_t cur;
*default_value = def;
*mask = 0;
xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_GET_CUR, (guchar *) & cur);
for (en = min; en <= max; en++) {
uvcx_rate_control_mode_t req = { 0, en };
if (xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_SET_CUR,
(guchar *) & req) &&
xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_GET_CUR,
(guchar *) & req) && req.bRateControlMode == en)
*mask |= (1 << en);
}
xu_query (self, UVCX_RATE_CONTROL_MODE, UVC_SET_CUR, (guchar *) & cur);
}
}
return ret;
}
static gboolean
gst_uvc_h264_src_get_boolean_setting (GstUvcH264Src * self, gchar * property,
gboolean * changeable, gboolean * default_value)
{
guint8 min, def, max;
gboolean ret = FALSE;
if (g_strcmp0 (property, "enable-sei") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bTimestamp), 1,
&min, &def, &max);
*changeable = (min != max);
*default_value = (def != 0);
} else if (g_strcmp0 (property, "preview-flipped") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bPreviewFlipped), 1,
&min, &def, &max);
*changeable = (min != max);
*default_value = (def != 0);
} else if (g_strcmp0 (property, "fixed-framerate") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bRateControlMode), 1,
&min, &def, &max);
*changeable = ((max & UVC_H264_RATECONTROL_FIXED_FRM_FLG) != 0);
*default_value = ((def & UVC_H264_RATECONTROL_FIXED_FRM_FLG) != 0);
}
return ret;
}
static gboolean
gst_uvc_h264_src_get_int_setting (GstUvcH264Src * self, gchar * property,
gint * min, gint * def, gint * max)
{
guint32 min32, def32, max32;
guint16 min16, def16, max16;
guint8 min8, def8, max8;
gint8 smin8, sdef8, smax8;
gboolean ret = FALSE;
GST_DEBUG_OBJECT (self, "Probing int property %s", property);
if (g_strcmp0 (property, "initial-bitrate") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, dwBitRate), 4,
&min32, &def32, &max32);
if (ret) {
*min = min32;
*def = def32;
*max = max32;
}
} else if (g_strcmp0 (property, "slice-units") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, wSliceUnits), 2,
&min16, &def16, &max16);
if (ret) {
*min = min16;
*def = def16;
*max = max16;
}
} else if (g_strcmp0 (property, "iframe-period") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, wIFramePeriod), 2,
&min16, &def16, &max16);
if (ret) {
*min = min16;
*def = def16;
*max = max16;
}
} else if (g_strcmp0 (property, "num-reorder-frames") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, bNumOfReorderFrames), 1,
&min8, &def8, &max8);
if (ret) {
*min = min8;
*def = def8;
*max = max8;
}
} else if (g_strcmp0 (property, "leaky-bucket-size") == 0) {
ret = probe_setting (self, UVCX_VIDEO_CONFIG_PROBE,
offsetof (uvcx_video_config_probe_commit_t, wLeakyBucketSize), 2,
&min16, &def16, &max16);
if (ret) {
*min = min16;
*def = def16;
*max = max16;
}
} else if (g_strcmp0 (property, "level-idc") == 0) {
ret = probe_setting (self, UVCX_VIDEO_ADVANCE_CONFIG,
offsetof (uvcx_video_advance_config_t, blevel_idc), 1,
&min8, &def8, &max8);
if (ret) {
*min = min8;
*def = def8;
*max = max8;
}
} else if (g_strcmp0 (property, "max-mbps") == 0) {
ret = probe_setting (self, UVCX_VIDEO_ADVANCE_CONFIG,
offsetof (uvcx_video_advance_config_t, dwMb_max), 4,
&min32, &def32, &max32);
if (ret) {
*min = min32;
*def = def32;
*max = max32;
}
} else if (g_strcmp0 (property, "peak-bitrate") == 0) {
ret = probe_setting (self, UVCX_BITRATE_LAYERS,
offsetof (uvcx_bitrate_layers_t, dwPeakBitrate), 4,
&min32, &def32, &max32);
if (ret) {
*min = min32;
*def = def32;
*max = max32;
}
} else if (g_strcmp0 (property, "average-bitrate") == 0) {
ret = probe_setting (self, UVCX_BITRATE_LAYERS,
offsetof (uvcx_bitrate_layers_t, dwAverageBitrate), 4,
&min32, &def32, &max32);
if (ret) {
*min = min32;
*def = def32;
*max = max32;
}
} else if (g_strcmp0 (property, "min-iframe-qp") == 0) {
if (update_qp (self, QP_I_FRAME))
ret = probe_setting (self, UVCX_QP_STEPS_LAYERS,
offsetof (uvcx_qp_steps_layers_t, bMinQp), 1, &smin8, &sdef8, &smax8);
if (ret) {
*min = smin8;
*def = sdef8;
*max = smax8;
}
} else if (g_strcmp0 (property, "max-iframe-qp") == 0) {
if (update_qp (self, QP_I_FRAME))
ret = probe_setting (self, UVCX_QP_STEPS_LAYERS,
offsetof (uvcx_qp_steps_layers_t, bMaxQp), 1, &smin8, &sdef8, &smax8);
if (ret) {
*min = smin8;
*def = sdef8;
*max = smax8;
}
} else if (g_strcmp0 (property, "min-pframe-qp") == 0) {
if (update_qp (self, QP_P_FRAME))
ret = probe_setting (self, UVCX_QP_STEPS_LAYERS,
offsetof (uvcx_qp_steps_layers_t, bMinQp), 1, &smin8, &sdef8, &smax8);
if (ret) {
*min = smin8;
*def = sdef8;
*max = smax8;
}
} else if (g_strcmp0 (property, "max-pframe-qp") == 0) {
if (update_qp (self, QP_P_FRAME))
ret = probe_setting (self, UVCX_QP_STEPS_LAYERS,
offsetof (uvcx_qp_steps_layers_t, bMaxQp), 1, &smin8, &sdef8, &smax8);
if (ret) {
*min = smin8;
*def = sdef8;
*max = smax8;
}
} else if (g_strcmp0 (property, "min-bframe-qp") == 0) {
if (update_qp (self, QP_B_FRAME))
ret = probe_setting (self, UVCX_QP_STEPS_LAYERS,
offsetof (uvcx_qp_steps_layers_t, bMinQp), 1, &smin8, &sdef8, &smax8);
if (ret) {
*min = smin8;
*def = sdef8;
*max = smax8;
}
} else if (g_strcmp0 (property, "max-bframe-qp") == 0) {
if (update_qp (self, QP_B_FRAME))
ret = probe_setting (self, UVCX_QP_STEPS_LAYERS,
offsetof (uvcx_qp_steps_layers_t, bMaxQp), 1, &smin8, &sdef8, &smax8);
if (ret) {
*min = smin8;
*def = sdef8;
*max = smax8;
}
} else if (g_strcmp0 (property, "ltr-buffer-size") == 0) {
ret = probe_setting (self, UVCX_LTR_BUFFER_SIZE_CONTROL,
offsetof (uvcx_ltr_buffer_size_control_t, bLTRBufferSize), 1,
&min8, &def8, &max8);
if (ret) {
*min = min8;
*def = def8;
*max = max8;
}
} else if (g_strcmp0 (property, "ltr-encoder-control") == 0) {
ret = probe_setting (self, UVCX_LTR_BUFFER_SIZE_CONTROL,
offsetof (uvcx_ltr_buffer_size_control_t, bLTREncoderControl), 1,
&min8, &def8, &max8);
if (ret) {
*min = min8;
*def = def8;
*max = max8;
}
} else {
g_return_val_if_reached (FALSE);
}
return ret;
}
static GstPadProbeReturn
gst_uvc_h264_src_event_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (user_data);
GstPadProbeReturn ret = GST_PAD_PROBE_OK;
GstEvent *event = info->data;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
ret = self->reconfiguring ? GST_PAD_PROBE_DROP : GST_PAD_PROBE_OK;
break;
default:
break;
}
return ret;
}
static GstPadProbeReturn
gst_uvc_h264_src_buffer_probe (GstPad * pad, GstPadProbeInfo * info,
gpointer user_data)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (user_data);
GstBuffer *buffer = info->data;
/* TODO: Check the NALU type and make sure it is a keyframe */
if (self->key_unit_event) {
GstClockTime ts, running_time, stream_time;
gboolean all_headers;
guint count;
GstEvent *downstream;
if (gst_video_event_parse_upstream_force_key_unit (self->key_unit_event,
&ts, &all_headers, &count)) {
if (!GST_CLOCK_TIME_IS_VALID (ts)) {
ts = GST_BUFFER_TIMESTAMP (buffer);
}
running_time = gst_segment_to_running_time (&self->segment,
GST_FORMAT_TIME, ts);
stream_time = gst_segment_to_stream_time (&self->segment,
GST_FORMAT_TIME, ts);
GST_DEBUG_OBJECT (self, "Sending downstream force-key-unit : %d - %d ts=%"
GST_TIME_FORMAT " running time =%" GST_TIME_FORMAT " stream=%"
GST_TIME_FORMAT, all_headers, count, GST_TIME_ARGS (ts),
GST_TIME_ARGS (running_time), GST_TIME_ARGS (stream_time));
downstream = gst_video_event_new_downstream_force_key_unit (ts,
running_time, stream_time, all_headers, count);
gst_pad_push_event (self->vidsrc, downstream);
gst_event_replace (&self->key_unit_event, NULL);
}
}
return TRUE;
}
static gboolean
gst_uvc_h264_src_parse_event (GstUvcH264Src * self, GstPad * pad,
GstEvent * event)
{
const GstStructure *s = gst_event_get_structure (event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CUSTOM_UPSTREAM:
if (pad == self->vidsrc && self->main_format == UVC_H264_SRC_FORMAT_H264) {
if (gst_video_event_is_force_key_unit (event)) {
uvcx_picture_type_control_t req = { 0, 0 };
GstClockTime ts;
gboolean all_headers;
if (gst_video_event_parse_upstream_force_key_unit (event,
&ts, &all_headers, NULL)) {
GST_INFO_OBJECT (self, "Received upstream force-key-unit : %d %"
GST_TIME_FORMAT, all_headers, GST_TIME_ARGS (ts));
/* TODO: wait until 'ts' time is reached */
if (all_headers)
req.wPicType = UVC_H264_PICTYPE_IDR_WITH_PPS_SPS;
else
req.wPicType = UVC_H264_PICTYPE_IDR;
if (!xu_query (self, UVCX_PICTURE_TYPE_CONTROL, UVC_SET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " PICTURE_TYPE_CONTROL SET_CUR error");
} else {
gst_event_replace (&self->key_unit_event, event);
gst_event_unref (event);
return TRUE;
}
}
} else if (s &&
gst_structure_has_name (s, "uvc-h264-ltr-picture-control")) {
guint put_at, encode_using;
if (gst_structure_get_uint (s, "put-at", &put_at) &&
gst_structure_get_uint (s, "encode-using", &encode_using)) {
uvcx_ltr_picture_control req = { 0, put_at, encode_using };
if (!xu_query (self, UVCX_LTR_PICTURE_CONTROL, UVC_SET_CUR,
(guchar *) & req)) {
GST_WARNING_OBJECT (self, " LTR PICTURE_CONTROL SET_CUR error");
} else {
gst_event_unref (event);
return TRUE;
}
}
return TRUE;
} else if (s && gst_structure_has_name (s, "uvc-h264-bitrate-control")) {
guint average, peak;
if (gst_structure_get_uint (s, "average-bitrate", &average) &&
gst_structure_get_uint (s, "peak-bitrate", &peak)) {
self->average_bitrate = average;
self->peak_bitrate = peak;
set_bitrate (self);
update_bitrate (self);
gst_event_unref (event);
return TRUE;
}
} else if (s && gst_structure_has_name (s, "uvc-h264-qp-control")) {
gint min_qp, max_qp;
gboolean valid_event = FALSE;
if (gst_structure_get_int (s, "min-iframe-qp", &min_qp) &&
gst_structure_get_int (s, "max-iframe-qp", &max_qp)) {
self->min_qp[QP_I_FRAME] = min_qp;
self->max_qp[QP_I_FRAME] = max_qp;
set_qp (self, QP_I_FRAME);
update_qp (self, QP_I_FRAME);
valid_event = TRUE;
}
if (gst_structure_get_int (s, "min-pframe-qp", &min_qp) &&
gst_structure_get_int (s, "max-pframe-qp", &max_qp)) {
self->min_qp[QP_P_FRAME] = min_qp;
self->max_qp[QP_P_FRAME] = max_qp;
set_qp (self, QP_P_FRAME);
update_qp (self, QP_P_FRAME);
valid_event = TRUE;
}
if (gst_structure_get_int (s, "min-bframe-qp", &min_qp) &&
gst_structure_get_int (s, "max-bframe-qp", &max_qp)) {
self->min_qp[QP_B_FRAME] = min_qp;
self->max_qp[QP_B_FRAME] = max_qp;
set_qp (self, QP_B_FRAME);
update_qp (self, QP_B_FRAME);
valid_event = TRUE;
}
if (valid_event) {
gst_event_unref (event);
return TRUE;
}
} else if (s && gst_structure_has_name (s, "uvc-h264-rate-control")) {
UvcH264RateControl rate;
gboolean fixed_framerate;
if (gst_structure_get_enum (s, "rate-control",
UVC_H264_RATECONTROL_TYPE, (gint *) & rate) &&
gst_structure_get_boolean (s, "fixed-framerate",
&fixed_framerate)) {
self->rate_control = rate;
self->fixed_framerate = fixed_framerate;
set_rate_control (self);
update_rate_control (self);
gst_event_unref (event);
return TRUE;
}
} else if (s && gst_structure_has_name (s, "uvc-h264-level-idc")) {
guint level_idc;
if (gst_structure_get_uint (s, "level-idc", &level_idc)) {
self->level_idc = level_idc;
set_level_idc (self);
update_level_idc_and_get_max_mbps (self);
gst_event_unref (event);
}
}
}
break;
default:
break;
}
return FALSE;
}
static gboolean
gst_uvc_h264_src_send_event (GstElement * element, GstEvent * event)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (element);
if (gst_uvc_h264_src_parse_event (self, self->vidsrc, event))
return TRUE;
return GST_ELEMENT_CLASS (parent_class)->send_event (element, event);
}
static gboolean
gst_uvc_h264_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (GST_PAD_PARENT (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEGMENT:
if (pad == self->vidsrc) {
const GstSegment *s;
gst_event_parse_segment (event, &s);
gst_segment_copy_into (s, &self->segment);
}
break;
case GST_EVENT_FLUSH_STOP:
if (pad == self->vidsrc)
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
break;
default:
if (gst_uvc_h264_src_parse_event (self, pad, event))
return TRUE;
break;
}
return self->srcpad_event_func (pad, parent, event);
}
static guint8
xu_get_id (GstUvcH264Src * self)
{
static const __u8 guid[16] = GUID_UVCX_H264_XU;
GUdevClient *client;
GUdevDevice *udevice;
GUdevDevice *parent;
guint64 busnum;
guint64 devnum;
libusb_device **device_list = NULL;
libusb_device *device = NULL;
ssize_t cnt;
int i, j, k;
if (self->usb_ctx == NULL)
libusb_init (&self->usb_ctx);
client = g_udev_client_new (NULL);
if (client) {
udevice = g_udev_client_query_by_device_file (client, self->device);
if (udevice) {
parent = g_udev_device_get_parent_with_subsystem (udevice, "usb",
"usb_device");
if (parent) {
busnum = g_udev_device_get_sysfs_attr_as_uint64 (parent, "busnum");
devnum = g_udev_device_get_sysfs_attr_as_uint64 (parent, "devnum");
cnt = libusb_get_device_list (self->usb_ctx, &device_list);
for (i = 0; i < cnt; i++) {
if (busnum == libusb_get_bus_number (device_list[i]) &&
devnum == libusb_get_device_address (device_list[i])) {
device = libusb_ref_device (device_list[i]);
break;
}
}
libusb_free_device_list (device_list, 1);
g_object_unref (parent);
}
g_object_unref (udevice);
}
g_object_unref (client);
}
if (device) {
struct libusb_device_descriptor desc;
if (libusb_get_device_descriptor (device, &desc) == 0) {
for (i = 0; i < desc.bNumConfigurations; ++i) {
struct libusb_config_descriptor *config = NULL;
if (libusb_get_config_descriptor (device, i, &config) == 0) {
for (j = 0; j < config->bNumInterfaces; j++) {
for (k = 0; k < config->interface[j].num_altsetting; k++) {
const struct libusb_interface_descriptor *interface;
const guint8 *ptr = NULL;
interface = &config->interface[j].altsetting[k];
if (interface->bInterfaceClass != LIBUSB_CLASS_VIDEO ||
interface->bInterfaceSubClass != USB_VIDEO_CONTROL)
continue;
ptr = interface->extra;
while (ptr - interface->extra +
sizeof (xu_descriptor) < interface->extra_length) {
xu_descriptor *desc = (xu_descriptor *) ptr;
GST_DEBUG_OBJECT (self, "Found VideoControl interface with "
"unit id %d : %" GUID_FORMAT, desc->bUnitID,
GUID_ARGS (desc->guidExtensionCode));
if (desc->bDescriptorType == USB_VIDEO_CONTROL_INTERFACE &&
desc->bDescriptorSubType == USB_VIDEO_CONTROL_XU_TYPE &&
memcmp (desc->guidExtensionCode, guid, 16) == 0) {
guint8 unit_id = desc->bUnitID;
GST_DEBUG_OBJECT (self, "Found H264 XU unit : %d", unit_id);
libusb_free_config_descriptor (config);
libusb_unref_device (device);
return unit_id;
}
ptr += desc->bLength;
}
}
}
libusb_free_config_descriptor (config);
}
}
}
libusb_unref_device (device);
}
return 0;
}
static gboolean
xu_query (GstUvcH264Src * self, guint selector, guint query, guchar * data)
{
struct uvc_xu_control_query xu;
__u16 len;
if (self->v4l2_fd == -1) {
GST_WARNING_OBJECT (self, "Can't query XU with fd = -1");
return FALSE;
}
xu.unit = self->h264_unit_id;
xu.selector = selector;
xu.query = UVC_GET_LEN;
xu.size = sizeof (len);
xu.data = (unsigned char *) &len;
if (-1 == ioctl (self->v4l2_fd, UVCIOC_CTRL_QUERY, &xu)) {
GST_WARNING_OBJECT (self, "PROBE GET_LEN error");
return FALSE;
}
if (query == UVC_GET_LEN) {
*((__u16 *) data) = len;
} else {
xu.query = query;
xu.size = len;
xu.data = data;
if (-1 == ioctl (self->v4l2_fd, UVCIOC_CTRL_QUERY, &xu)) {
return FALSE;
}
}
return TRUE;
}
static void
fill_probe_commit (GstUvcH264Src * self,
uvcx_video_config_probe_commit_t * probe, guint32 frame_interval,
guint32 width, guint32 height, guint32 profile,
UvcH264StreamFormat stream_format)
{
probe->dwFrameInterval = frame_interval;
probe->dwBitRate = self->initial_bitrate;
probe->wWidth = width;
probe->wHeight = height;
probe->wSliceUnits = self->slice_units;
probe->wSliceMode = self->slice_mode;
probe->wProfile = profile;
probe->wIFramePeriod = self->iframe_period;
probe->bUsageType = self->usage_type;
probe->bRateControlMode = self->rate_control;
if (self->fixed_framerate)
probe->bRateControlMode |= UVC_H264_RATECONTROL_FIXED_FRM_FLG;
probe->bStreamFormat = stream_format;
probe->bEntropyCABAC = self->entropy;
probe->bTimestamp = self->enable_sei ?
UVC_H264_TIMESTAMP_SEI_ENABLE : UVC_H264_TIMESTAMP_SEI_DISABLE;
probe->bNumOfReorderFrames = self->num_reorder_frames;
probe->bPreviewFlipped = self->preview_flipped ?
UVC_H264_PREFLIPPED_HORIZONTAL : UVC_H264_PREFLIPPED_DISABLE;
probe->wLeakyBucketSize = self->leaky_bucket_size;
}
static void
print_probe_commit (GstUvcH264Src * self,
uvcx_video_config_probe_commit_t * probe)
{
GST_DEBUG_OBJECT (self, " Frame interval : %d *100ns",
probe->dwFrameInterval);
GST_DEBUG_OBJECT (self, " Bit rate : %d", probe->dwBitRate);
GST_DEBUG_OBJECT (self, " Hints : %X", probe->bmHints);
GST_DEBUG_OBJECT (self, " Configuration index : %d",
probe->wConfigurationIndex);
GST_DEBUG_OBJECT (self, " Width : %d", probe->wWidth);
GST_DEBUG_OBJECT (self, " Height : %d", probe->wHeight);
GST_DEBUG_OBJECT (self, " Slice units : %d", probe->wSliceUnits);
GST_DEBUG_OBJECT (self, " Slice mode : %X", probe->wSliceMode);
GST_DEBUG_OBJECT (self, " Profile : %X", probe->wProfile);
GST_DEBUG_OBJECT (self, " IFrame Period : %d ms", probe->wIFramePeriod);
GST_DEBUG_OBJECT (self, " Estimated video delay : %d ms",
probe->wEstimatedVideoDelay);
GST_DEBUG_OBJECT (self, " Estimated max config delay : %d ms",
probe->wEstimatedMaxConfigDelay);
GST_DEBUG_OBJECT (self, " Usage type : %X", probe->bUsageType);
GST_DEBUG_OBJECT (self, " Rate control mode : %X", probe->bRateControlMode);
GST_DEBUG_OBJECT (self, " Temporal scale mode : %X",
probe->bTemporalScaleMode);
GST_DEBUG_OBJECT (self, " Spatial scale mode : %X",
probe->bSpatialScaleMode);
GST_DEBUG_OBJECT (self, " SNR scale mode : %X", probe->bSNRScaleMode);
GST_DEBUG_OBJECT (self, " Stream mux option : %X", probe->bStreamMuxOption);
GST_DEBUG_OBJECT (self, " Stream Format : %X", probe->bStreamFormat);
GST_DEBUG_OBJECT (self, " Entropy CABAC : %X", probe->bEntropyCABAC);
GST_DEBUG_OBJECT (self, " Timestamp : %X", probe->bTimestamp);
GST_DEBUG_OBJECT (self, " Num of reorder frames : %d",
probe->bNumOfReorderFrames);
GST_DEBUG_OBJECT (self, " Preview flipped : %X", probe->bPreviewFlipped);
GST_DEBUG_OBJECT (self, " View : %d", probe->bView);
GST_DEBUG_OBJECT (self, " Stream ID : %X", probe->bStreamID);
GST_DEBUG_OBJECT (self, " Spatial layer ratio : %f",
((probe->bSpatialLayerRatio & 0xF0) >> 4) +
((float) (probe->bSpatialLayerRatio & 0x0F)) / 16);
GST_DEBUG_OBJECT (self, " Leaky bucket size : %d ms",
probe->wLeakyBucketSize);
}
static void
configure_h264 (GstUvcH264Src * self, gint fd)
{
uvcx_video_config_probe_commit_t probe;
/* Set the secondary format first, so the last SET_CUR will be for the
* H264 format. This way, we can still get the static control values with
* a GET_CUR. Otherwise all static properties will return 0 because that's
* what the GET_CUR of the raw format returns.
*/
if (self->secondary_format == UVC_H264_SRC_FORMAT_RAW) {
memset (&probe, 0, sizeof (probe));
probe.dwFrameInterval = self->secondary_frame_interval;
probe.wWidth = self->secondary_width;
probe.wHeight = self->secondary_height;
probe.bStreamMuxOption = 5;
GST_DEBUG_OBJECT (self, "RAW PROBE SET_CUR : ");
print_probe_commit (self, &probe);
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_SET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE SET_CUR error");
return;
}
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return;
}
GST_DEBUG_OBJECT (self, "RAW PROBE GET_CUR : ");
print_probe_commit (self, &probe);
if (!xu_query (self, UVCX_VIDEO_CONFIG_COMMIT, UVC_SET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "COMMIT SET_CUR error");
return;
}
}
/* Print MIN/MAX/DEF probe values for debugging purposes */
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_MIN,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return;
}
GST_DEBUG_OBJECT (self, "PROBE GET_MIN : ");
print_probe_commit (self, &probe);
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_MAX,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return;
}
GST_DEBUG_OBJECT (self, "PROBE GET_MAX : ");
print_probe_commit (self, &probe);
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_DEF,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return;
}
GST_DEBUG_OBJECT (self, "PROBE GET_DEF : ");
print_probe_commit (self, &probe);
fill_probe_commit (self, &probe, self->main_frame_interval,
self->main_width, self->main_height, self->main_profile,
self->main_stream_format);
if (self->secondary_format != UVC_H264_SRC_FORMAT_NONE)
probe.bStreamMuxOption = 3;
else
probe.bStreamMuxOption = 0;
probe.bmHints = UVC_H264_BMHINTS_RESOLUTION | UVC_H264_BMHINTS_PROFILE |
UVC_H264_BMHINTS_FRAME_INTERVAL;
GST_DEBUG_OBJECT (self, "PROBE SET_CUR : ");
print_probe_commit (self, &probe);
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_SET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE SET_CUR error");
return;
}
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return;
}
GST_DEBUG_OBJECT (self, "PROBE GET_CUR : ");
print_probe_commit (self, &probe);
/* Must validate the settings accepted by the encoder */
if (!xu_query (self, UVCX_VIDEO_CONFIG_COMMIT, UVC_SET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "COMMIT SET_CUR error");
return;
}
}
static void
v4l2src_prepare_format (GstElement * v4l2src, gint fd, GstCaps * caps,
gpointer user_data)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (user_data);
if (self->main_format == UVC_H264_SRC_FORMAT_H264) {
/* TODO: update static controls and g_object_notify those that changed */
configure_h264 (self, fd);
/* TODO: update dynamic controls on READY state */
/* Configure dynamic controls */
set_rate_control (self);
update_rate_control (self);
set_level_idc (self);
update_level_idc_and_get_max_mbps (self);
set_bitrate (self);
update_bitrate (self);
set_qp (self, QP_I_FRAME);
update_qp (self, QP_I_FRAME);
set_qp (self, QP_P_FRAME);
update_qp (self, QP_P_FRAME);
set_qp (self, QP_B_FRAME);
update_qp (self, QP_B_FRAME);
set_ltr (self);
update_ltr (self);
}
}
static gboolean
_extract_caps_info (GstStructure * structure, guint16 * width, guint16 * height,
guint32 * frame_interval)
{
gint w, h, fps_n, fps_d;
gboolean ret = TRUE;
ret &= gst_structure_get_int (structure, "width", &w);
ret &= gst_structure_get_int (structure, "height", &h);
ret &= gst_structure_get_fraction (structure, "framerate", &fps_n, &fps_d);
if (ret) {
*width = w;
*height = h;
/* Interval is in 100ns */
*frame_interval = GST_TIME_AS_NSECONDS ((fps_d * GST_SECOND) / fps_n) / 100;
}
return ret;
}
static guint16
_extract_profile (GstStructure * structure)
{
const gchar *profile_str;
guint16 profile;
profile = UVC_H264_PROFILE_HIGH;
profile_str = gst_structure_get_string (structure, "profile");
if (profile_str) {
if (!strcmp (profile_str, "constrained-baseline")) {
profile = UVC_H264_PROFILE_CONSTRAINED_BASELINE;
} else if (!strcmp (profile_str, "baseline")) {
profile = UVC_H264_PROFILE_BASELINE;
} else if (!strcmp (profile_str, "main")) {
profile = UVC_H264_PROFILE_MAIN;
} else if (!strcmp (profile_str, "high")) {
profile = UVC_H264_PROFILE_HIGH;
}
}
return profile;
}
static UvcH264StreamFormat
_extract_stream_format (GstStructure * structure)
{
const gchar *stream_format;
stream_format = gst_structure_get_string (structure, "stream-format");
if (stream_format) {
if (!strcmp (stream_format, "avc"))
return UVC_H264_STREAMFORMAT_NAL;
else if (!strcmp (stream_format, "byte-stream"))
return UVC_H264_STREAMFORMAT_ANNEXB;
}
return UVC_H264_STREAMFORMAT_ANNEXB;
}
static GstCaps *
_transform_caps (GstUvcH264Src * self, GstCaps * caps, const gchar * name)
{
GstElement *el = gst_element_factory_make (name, NULL);
GstElement *cf = gst_element_factory_make ("capsfilter", NULL);
GstElement *fs = gst_element_factory_make ("fakesink", NULL);
GstPad *sink;
GstCaps *out_caps = NULL;
if (!el || !cf || !fs) {
if (el)
gst_object_unref (el);
if (cf)
gst_object_unref (cf);
if (fs)
gst_object_unref (fs);
goto done;
}
gst_element_set_locked_state (el, TRUE);
gst_element_set_locked_state (cf, TRUE);
gst_element_set_locked_state (fs, TRUE);
if (!gst_bin_add (GST_BIN (self), el)) {
gst_object_unref (el);
gst_object_unref (cf);
gst_object_unref (fs);
goto done;
}
if (!gst_bin_add (GST_BIN (self), cf)) {
gst_object_unref (cf);
gst_object_unref (fs);
gst_bin_remove (GST_BIN (self), el);
goto done;
}
if (!gst_bin_add (GST_BIN (self), fs)) {
gst_object_unref (fs);
gst_bin_remove (GST_BIN (self), el);
gst_bin_remove (GST_BIN (self), cf);
goto done;
}
g_object_set (cf, "caps", caps, NULL);
if (!gst_element_link (cf, fs))
goto error_remove;
if (!gst_element_link (el, cf))
goto error_remove;
sink = gst_element_get_static_pad (el, "sink");
if (!sink)
goto error_remove;
GST_DEBUG_OBJECT (self, "Transforming: %" GST_PTR_FORMAT, caps);
caps = gst_pad_query_caps (sink, NULL);
gst_object_unref (sink);
GST_DEBUG_OBJECT (self, "Result: %" GST_PTR_FORMAT, out_caps);
error_remove:
gst_bin_remove (GST_BIN (self), cf);
gst_bin_remove (GST_BIN (self), el);
gst_bin_remove (GST_BIN (self), fs);
done:
if (out_caps == NULL)
out_caps = gst_caps_copy (caps);
return out_caps;
}
static GstCaps *
gst_uvc_h264_src_transform_caps (GstUvcH264Src * self, GstCaps * caps)
{
GstCaps *h264 = gst_caps_new_empty_simple ("video/x-h264");
GstCaps *jpg = gst_caps_new_empty_simple ("image/jpeg");
GstCaps *h264_caps = gst_caps_intersect (h264, caps);
GstCaps *jpg_caps = gst_caps_intersect (jpg, caps);
/* TODO: Keep caps order after transformation */
caps = _transform_caps (self, caps, self->colorspace_name);
caps = gst_caps_make_writable (caps);
if (!gst_caps_is_empty (h264_caps)) {
gst_caps_append (caps, h264_caps);
} else {
gst_caps_unref (h264_caps);
}
if (!gst_caps_is_empty (jpg_caps)) {
gst_caps_append (caps, jpg_caps);
} else {
gst_caps_unref (jpg_caps);
}
gst_caps_unref (h264);
gst_caps_unref (jpg);
return caps;
}
static GstCaps *
gst_uvc_h264_src_fixate_caps (GstUvcH264Src * self, GstPad * v4l_pad,
GstCaps * v4l_caps, GstCaps * peer_caps, gboolean primary)
{
GstCaps *caps = NULL;
GstCaps *icaps = NULL;
GstCaps *tcaps = NULL;
int i;
if (v4l_caps == NULL || gst_caps_is_any (v4l_caps)) {
GST_DEBUG_OBJECT (self, "v4l caps are invalid. not fixating");
return NULL;
}
tcaps = gst_caps_intersect_full (peer_caps, v4l_caps,
GST_CAPS_INTERSECT_FIRST);
GST_DEBUG_OBJECT (self, "intersect: %" GST_PTR_FORMAT, tcaps);
icaps = gst_caps_normalize (tcaps);
/* Prefer the first caps we are compatible with that the peer proposed */
for (i = 0; i < gst_caps_get_size (icaps); i++) {
/* get intersection */
GstCaps *ipcaps = gst_caps_copy_nth (icaps, i);
GstStructure *s = gst_caps_get_structure (ipcaps, 0);
GST_DEBUG_OBJECT (self, "Testing %s: %" GST_PTR_FORMAT,
primary ? "primary" : "secondary", ipcaps);
if (primary && gst_structure_has_name (s, "video/x-h264")) {
uvcx_video_config_probe_commit_t probe;
guint16 width;
guint16 height;
guint32 interval;
guint16 profile;
UvcH264StreamFormat stream_format;
if (_extract_caps_info (s, &width, &height, &interval)) {
profile = _extract_profile (s);
stream_format = _extract_stream_format (s);
fill_probe_commit (self, &probe, interval, width, height,
profile, stream_format);
probe.bmHints = UVC_H264_BMHINTS_RESOLUTION |
UVC_H264_BMHINTS_PROFILE | UVC_H264_BMHINTS_FRAME_INTERVAL;
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_SET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE SET_CUR error");
return NULL;
}
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return NULL;
}
GST_DEBUG_OBJECT (self, "Probe gives us %d==%d, %d==%d, %d==%d",
probe.wWidth, width, probe.wHeight, height,
probe.bStreamFormat, stream_format);
if (probe.wWidth == width && probe.wHeight == height &&
probe.bStreamFormat == stream_format) {
caps = ipcaps;
break;
}
}
} else if (!primary && self->main_format == UVC_H264_SRC_FORMAT_H264) {
uvcx_video_config_probe_commit_t probe;
guint16 width;
guint16 height;
guint32 interval;
if (_extract_caps_info (s, &width, &height, &interval)) {
if (gst_structure_has_name (s, "video/x-raw")) {
guint8 mux = 0;
const gchar *format = gst_structure_get_string (s, "format");
if ((format = gst_structure_get_string (s, "format"))) {
if (g_strcmp0 (format, "YUY2") == 0)
mux = 4;
else if (g_strcmp0 (format, "NV12") == 0)
mux = 8;
}
if (mux != 0) {
memset (&probe, 0, sizeof (probe));
probe.dwFrameInterval = interval;
probe.wWidth = width;
probe.wHeight = height;
probe.bStreamMuxOption = mux | 1;
probe.bmHints = UVC_H264_BMHINTS_RESOLUTION |
UVC_H264_BMHINTS_PROFILE | UVC_H264_BMHINTS_FRAME_INTERVAL;
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_SET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE SET_CUR error");
return NULL;
}
if (!xu_query (self, UVCX_VIDEO_CONFIG_PROBE, UVC_GET_CUR,
(guchar *) & probe)) {
GST_WARNING_OBJECT (self, "PROBE GET_CUR error");
return NULL;
}
GST_DEBUG_OBJECT (self, "Probe gives us %d==%d, %d==%d, %d~=%d",
probe.wWidth, width, probe.wHeight, height,
probe.bStreamMuxOption, mux);
if (probe.wWidth == width && probe.wHeight == height &&
(probe.bStreamMuxOption & mux) != 0) {
caps = ipcaps;
break;
}
}
} else if (gst_structure_has_name (s, "image/jpeg")) {
/* HACK ALERT: No way of figuring this one out but it seems the
* camera doesn't allow for h264 muxing and jpeg resolution higher
* than 640x480 so we shouldn't allow it */
if (width <= 640 && height <= 480) {
caps = ipcaps;
break;
}
}
}
} else {
caps = ipcaps;
break;
}
gst_caps_unref (ipcaps);
}
if (caps) {
caps = gst_caps_make_writable (caps);
/* now fixate */
if (!gst_caps_is_empty (caps)) {
caps = gst_caps_fixate (caps);
GST_DEBUG_OBJECT (self, "fixated to: %" GST_PTR_FORMAT, caps);
}
if (gst_caps_is_empty (caps) || gst_caps_is_any (caps)) {
gst_caps_unref (caps);
caps = NULL;
}
}
return caps;
}
static void
gst_uvc_h264_src_destroy_pipeline (GstUvcH264Src * self, gboolean v4l2src)
{
GstIterator *iter = NULL;
gboolean done;
if (v4l2src && self->v4l2_src) {
gst_bin_remove (GST_BIN (self), self->v4l2_src);
gst_element_set_state (self->v4l2_src, GST_STATE_NULL);
gst_object_unref (self->v4l2_src);
self->v4l2_src = NULL;
self->v4l2_fd = -1;
self->h264_unit_id = 0;
}
if (self->mjpg_demux) {
gst_bin_remove (GST_BIN (self), self->mjpg_demux);
gst_element_set_state (self->mjpg_demux, GST_STATE_NULL);
gst_object_unref (self->mjpg_demux);
self->mjpg_demux = NULL;
}
if (self->jpeg_dec) {
gst_bin_remove (GST_BIN (self), self->jpeg_dec);
gst_element_set_state (self->jpeg_dec, GST_STATE_NULL);
gst_object_unref (self->jpeg_dec);
self->jpeg_dec = NULL;
}
if (self->vid_colorspace) {
gst_bin_remove (GST_BIN (self), self->vid_colorspace);
gst_element_set_state (self->vid_colorspace, GST_STATE_NULL);
gst_object_unref (self->vid_colorspace);
self->vid_colorspace = NULL;
}
if (self->vf_colorspace) {
gst_bin_remove (GST_BIN (self), self->vf_colorspace);
gst_element_set_state (self->vf_colorspace, GST_STATE_NULL);
gst_object_unref (self->vf_colorspace);
self->vf_colorspace = NULL;
}
iter = gst_bin_iterate_elements (GST_BIN (self));
done = FALSE;
while (!done) {
GValue data = { 0, };
switch (gst_iterator_next (iter, &data)) {
case GST_ITERATOR_OK:
{
GstElement *child = g_value_get_object (&data);
if (child != self->v4l2_src) {
gst_bin_remove (GST_BIN (self), child);
gst_element_set_state (child, GST_STATE_NULL);
}
g_value_reset (&data);
break;
}
case GST_ITERATOR_RESYNC:
gst_iterator_resync (iter);
break;
case GST_ITERATOR_ERROR:
done = TRUE;
break;
case GST_ITERATOR_DONE:
done = TRUE;
break;
}
}
gst_iterator_free (iter);
}
static gboolean
ensure_v4l2src (GstUvcH264Src * self)
{
gchar *device = NULL;
GstClock *v4l2_clock = NULL;
if (self->v4l2_src == NULL) {
/* Create v4l2 source and set it up */
self->v4l2_src = gst_element_factory_make ("v4l2src", NULL);
if (!self->v4l2_src || !gst_bin_add (GST_BIN (self), self->v4l2_src))
goto error;
gst_object_ref (self->v4l2_src);
g_signal_connect (self->v4l2_src, "prepare-format",
(GCallback) v4l2src_prepare_format, self);
}
g_object_get (self->v4l2_src, "device", &device, NULL);
g_object_set (self->v4l2_src,
"device", self->device, "num-buffers", self->num_buffers, NULL);
v4l2_clock = gst_element_get_clock (self->v4l2_src);
/* Set to NULL if the device changed */
if (g_strcmp0 (device, self->device))
gst_element_set_state (self->v4l2_src, GST_STATE_NULL);
g_free (device);
if (gst_element_set_state (self->v4l2_src, GST_STATE_READY) !=
GST_STATE_CHANGE_SUCCESS) {
GST_DEBUG_OBJECT (self, "Unable to set v4l2src to READY state");
goto error_remove;
}
/* Set/Update the fd and unit id after we go to READY */
g_object_get (self->v4l2_src, "device-fd", &self->v4l2_fd, NULL);
self->h264_unit_id = xu_get_id (self);
if (self->h264_unit_id == 0) {
GST_ELEMENT_ERROR (self, RESOURCE, SETTINGS,
("Device is not a valid UVC H264 camera"), (NULL));
goto error_remove;
}
/* going to state READY makes v4l2src lose its reference to the clock */
if (v4l2_clock) {
gst_element_set_clock (self->v4l2_src, v4l2_clock);
gst_element_set_base_time (self->v4l2_src,
gst_element_get_base_time (GST_ELEMENT (self)));
gst_object_unref (v4l2_clock);
}
return TRUE;
error_remove:
gst_element_set_state (self->v4l2_src, GST_STATE_NULL);
gst_bin_remove (GST_BIN (self), self->v4l2_src);
error:
if (self->v4l2_src)
gst_object_unref (self->v4l2_src);
self->v4l2_src = NULL;
self->v4l2_fd = -1;
self->h264_unit_id = 0;
return FALSE;
}
static gboolean
gst_uvc_h264_src_construct_pipeline (GstBaseCameraSrc * bcamsrc)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (bcamsrc);
GstIterator *iter = NULL;
gboolean iter_done = FALSE;
GstPad *vf_pad = NULL;
GstCaps *vf_caps = NULL;
GstStructure *vf_struct = NULL;
GstPad *vid_pad = NULL;
GstCaps *vid_caps = NULL;
GstStructure *vid_struct = NULL;
GstCaps *src_caps = NULL;
GstPad *v4l_pad = NULL;
GstCaps *v4l_caps = NULL;
gboolean jpg2raw = FALSE;
enum
{
RAW_NONE, ENCODED_NONE, NONE_RAW, NONE_ENCODED,
H264_JPG, H264_RAW, H264_JPG2RAW, NONE_NONE,
RAW_RAW, ENCODED_ENCODED,
} type;
GST_DEBUG_OBJECT (self, "Construct pipeline");
self->reconfiguring = TRUE;
if (self->v4l2_src) {
uvcx_encoder_reset req = { 0 };
if (!xu_query (self, UVCX_ENCODER_RESET, UVC_SET_CUR, (guchar *) & req))
GST_WARNING_OBJECT (self, " UVCX_ENCODER_RESET SET_CUR error");
}
if (!ensure_v4l2src (self))
goto error;
gst_uvc_h264_src_destroy_pipeline (self, FALSE);
/* Potentially unlink v4l2src to the ghost pads */
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vidsrc), NULL);
gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), NULL);
if (gst_pad_is_linked (self->vfsrc))
vf_caps = gst_pad_peer_query_caps (self->vfsrc, NULL);
if (gst_pad_is_linked (self->vidsrc))
vid_caps = gst_pad_peer_query_caps (self->vidsrc, NULL);
GST_DEBUG_OBJECT (self, "vfsrc caps : %" GST_PTR_FORMAT, vf_caps);
GST_DEBUG_OBJECT (self, "vidsrc caps : %" GST_PTR_FORMAT, vid_caps);
if (!self->started) {
GST_DEBUG_OBJECT (self, "video not started. Ignoring vidsrc caps");
if (vid_caps)
gst_caps_unref (vid_caps);
vid_caps = NULL;
}
v4l_pad = gst_element_get_static_pad (self->v4l2_src, "src");
v4l_caps = gst_pad_query_caps (v4l_pad, NULL);
GST_DEBUG_OBJECT (self, "v4l2src caps : %" GST_PTR_FORMAT, v4l_caps);
if (vid_caps) {
GstCaps *trans_caps = gst_uvc_h264_src_transform_caps (self, vid_caps);
gst_caps_unref (vid_caps);
vid_caps = gst_uvc_h264_src_fixate_caps (self, v4l_pad, v4l_caps,
trans_caps, TRUE);
gst_caps_unref (trans_caps);
if (vid_caps) {
vid_struct = gst_caps_get_structure (vid_caps, 0);
} else {
GST_WARNING_OBJECT (self, "Could not negotiate vidsrc caps format");
gst_object_unref (v4l_pad);
gst_caps_unref (v4l_caps);
goto error_remove;
}
}
GST_DEBUG_OBJECT (self, "Fixated vidsrc caps : %" GST_PTR_FORMAT, vid_caps);
if (vid_caps && gst_structure_has_name (vid_struct, "video/x-h264")) {
self->main_format = UVC_H264_SRC_FORMAT_H264;
if (!_extract_caps_info (vid_struct, &self->main_width,
&self->main_height, &self->main_frame_interval)) {
gst_object_unref (v4l_pad);
gst_caps_unref (v4l_caps);
goto error_remove;
}
self->main_stream_format = _extract_stream_format (vid_struct);
self->main_profile = _extract_profile (vid_struct);
} else {
self->main_format = UVC_H264_SRC_FORMAT_NONE;
}
if (vf_caps) {
GstCaps *trans_caps = gst_uvc_h264_src_transform_caps (self, vf_caps);
gst_caps_unref (vf_caps);
vf_caps = gst_uvc_h264_src_fixate_caps (self, v4l_pad, v4l_caps,
trans_caps, FALSE);
/* If we couldn't find a suitable vf cap, try the jpeg2raw pipeline */
if (!vf_caps && self->main_format == UVC_H264_SRC_FORMAT_H264) {
GstCaps *jpg_caps;
jpg2raw = TRUE;
jpg_caps = _transform_caps (self, trans_caps, self->jpeg_decoder_name);
vf_caps = gst_uvc_h264_src_fixate_caps (self, v4l_pad, v4l_caps,
jpg_caps, FALSE);
gst_caps_unref (jpg_caps);
}
gst_caps_unref (trans_caps);
if (vf_caps) {
vf_struct = gst_caps_get_structure (vf_caps, 0);
} else {
GST_WARNING_OBJECT (self, "Could not negotiate vfsrc caps format");
gst_object_unref (v4l_pad);
gst_caps_unref (v4l_caps);
goto error_remove;
}
}
GST_DEBUG_OBJECT (self, "Fixated vfsrc caps : %" GST_PTR_FORMAT, vf_caps);
gst_object_unref (v4l_pad);
gst_caps_unref (v4l_caps);
if (vf_caps && vid_caps &&
!gst_structure_has_name (vid_struct, "video/x-h264")) {
/* Allow for vfsrc+vidsrc to both be raw or jpeg */
if (gst_structure_has_name (vid_struct, "image/jpeg") &&
gst_structure_has_name (vf_struct, "image/jpeg")) {
self->main_format = UVC_H264_SRC_FORMAT_JPG;
self->secondary_format = UVC_H264_SRC_FORMAT_JPG;
type = ENCODED_ENCODED;
} else if (!gst_structure_has_name (vid_struct, "image/jpeg") &&
!gst_structure_has_name (vf_struct, "image/jpeg")) {
self->main_format = UVC_H264_SRC_FORMAT_RAW;
self->secondary_format = UVC_H264_SRC_FORMAT_RAW;
type = RAW_RAW;
} else {
goto error_remove;
}
} else if (vf_caps && vid_caps) {
guint32 smallest_frame_interval;
if (!_extract_caps_info (vf_struct, &self->secondary_width,
&self->secondary_height, &self->secondary_frame_interval))
goto error_remove;
if (jpg2raw == FALSE && gst_structure_has_name (vf_struct, "image/jpeg")) {
type = H264_JPG;
self->secondary_format = UVC_H264_SRC_FORMAT_JPG;
} else {
if (jpg2raw) {
type = H264_JPG2RAW;
self->secondary_format = UVC_H264_SRC_FORMAT_JPG;
} else {
type = H264_RAW;
self->secondary_format = UVC_H264_SRC_FORMAT_RAW;
}
}
smallest_frame_interval = MIN (self->main_frame_interval,
self->secondary_frame_interval);
/* Just to avoid a potential division by zero, set interval to 30 fps */
if (smallest_frame_interval == 0)
smallest_frame_interval = 333333;
/* Frame interval is in 100ns units */
src_caps = gst_caps_new_simple ("image/jpeg",
"width", G_TYPE_INT, self->secondary_width,
"height", G_TYPE_INT, self->secondary_height,
"framerate", GST_TYPE_FRACTION,
NSEC_PER_SEC / smallest_frame_interval, 100, NULL);
} else if (vf_caps || vid_caps) {
self->secondary_format = UVC_H264_SRC_FORMAT_NONE;
if (vid_struct && gst_structure_has_name (vid_struct, "video/x-h264")) {
type = ENCODED_NONE;
} else if (vid_struct && gst_structure_has_name (vid_struct, "image/jpeg")) {
type = ENCODED_NONE;
self->main_format = UVC_H264_SRC_FORMAT_JPG;
} else if (vf_struct && gst_structure_has_name (vf_struct, "image/jpeg")) {
type = NONE_ENCODED;
self->secondary_format = UVC_H264_SRC_FORMAT_JPG;
} else if (vid_struct) {
type = RAW_NONE;
self->main_format = UVC_H264_SRC_FORMAT_RAW;
} else if (vf_struct) {
type = NONE_RAW;
self->secondary_format = UVC_H264_SRC_FORMAT_RAW;
} else {
g_assert_not_reached ();
type = NONE_NONE;
self->main_format = UVC_H264_SRC_FORMAT_NONE;
}
} else {
type = NONE_NONE;
self->main_format = UVC_H264_SRC_FORMAT_NONE;
self->secondary_format = UVC_H264_SRC_FORMAT_NONE;
}
switch (type) {
case NONE_NONE:
GST_DEBUG_OBJECT (self, "None+None");
vf_pad = gst_element_get_static_pad (self->v4l2_src, "src");
break;
case RAW_NONE:
GST_DEBUG_OBJECT (self, "Raw+None");
self->vid_colorspace = gst_element_factory_make (self->colorspace_name,
NULL);
if (!self->vid_colorspace ||
!gst_bin_add (GST_BIN (self), self->vid_colorspace))
goto error_remove;
gst_object_ref (self->vid_colorspace);
if (!gst_element_link (self->v4l2_src, self->vid_colorspace))
goto error_remove_all;
vid_pad = gst_element_get_static_pad (self->vid_colorspace, "src");
break;
case NONE_RAW:
GST_DEBUG_OBJECT (self, "None+Raw");
self->vf_colorspace = gst_element_factory_make (self->colorspace_name,
NULL);
if (!self->vf_colorspace ||
!gst_bin_add (GST_BIN (self), self->vf_colorspace))
goto error_remove;
gst_object_ref (self->vf_colorspace);
if (!gst_element_link (self->v4l2_src, self->vf_colorspace))
goto error_remove_all;
vf_pad = gst_element_get_static_pad (self->vf_colorspace, "src");
break;
case ENCODED_NONE:
GST_DEBUG_OBJECT (self, "Encoded+None");
vid_pad = gst_element_get_static_pad (self->v4l2_src, "src");
break;
case NONE_ENCODED:
GST_DEBUG_OBJECT (self, "None+Encoded");
vf_pad = gst_element_get_static_pad (self->v4l2_src, "src");
break;
case H264_JPG:
GST_DEBUG_OBJECT (self, "H264+JPG");
self->mjpg_demux = gst_element_factory_make ("uvch264mjpgdemux", NULL);
if (!self->mjpg_demux || !gst_bin_add (GST_BIN (self), self->mjpg_demux))
goto error_remove;
gst_object_ref (self->mjpg_demux);
g_object_set (self->mjpg_demux, "device-fd", self->v4l2_fd,
"num-clock-samples", self->num_clock_samples, NULL);
if (!gst_element_link_filtered (self->v4l2_src, self->mjpg_demux,
src_caps))
goto error_remove_all;
vid_pad = gst_element_get_static_pad (self->mjpg_demux, "h264");
vf_pad = gst_element_get_static_pad (self->mjpg_demux, "jpeg");
break;
case H264_RAW:
GST_DEBUG_OBJECT (self, "H264+Raw");
self->mjpg_demux = gst_element_factory_make ("uvch264mjpgdemux", NULL);
self->vf_colorspace = gst_element_factory_make (self->colorspace_name,
NULL);
if (!self->mjpg_demux || !self->vf_colorspace)
goto error_remove;
if (!gst_bin_add (GST_BIN (self), self->mjpg_demux))
goto error_remove;
gst_object_ref (self->mjpg_demux);
g_object_set (self->mjpg_demux, "device-fd", self->v4l2_fd,
"num-clock-samples", self->num_clock_samples, NULL);
if (!gst_bin_add (GST_BIN (self), self->vf_colorspace)) {
gst_object_unref (self->vf_colorspace);
self->vf_colorspace = NULL;
goto error_remove_all;
}
gst_object_ref (self->vf_colorspace);
if (!gst_element_link_filtered (self->v4l2_src, self->mjpg_demux,
src_caps))
goto error_remove_all;
if (!gst_element_link_pads (self->mjpg_demux, "yuy2",
self->vf_colorspace, "sink"))
goto error_remove_all;
vid_pad = gst_element_get_static_pad (self->mjpg_demux, "h264");
vf_pad = gst_element_get_static_pad (self->vf_colorspace, "src");
break;
case H264_JPG2RAW:
GST_DEBUG_OBJECT (self, "H264+Raw(jpegdec)");
self->mjpg_demux = gst_element_factory_make ("uvch264mjpgdemux", NULL);
self->jpeg_dec = gst_element_factory_make (self->jpeg_decoder_name, NULL);
self->vf_colorspace = gst_element_factory_make (self->colorspace_name,
NULL);
if (!self->mjpg_demux || !self->jpeg_dec || !self->vf_colorspace)
goto error_remove;
if (!gst_bin_add (GST_BIN (self), self->mjpg_demux))
goto error_remove;
gst_object_ref (self->mjpg_demux);
g_object_set (self->mjpg_demux, "device-fd", self->v4l2_fd,
"num-clock-samples", self->num_clock_samples, NULL);
if (!gst_bin_add (GST_BIN (self), self->jpeg_dec)) {
gst_object_unref (self->jpeg_dec);
self->jpeg_dec = NULL;
gst_object_unref (self->vf_colorspace);
self->vf_colorspace = NULL;
goto error_remove_all;
}
gst_object_ref (self->jpeg_dec);
if (!gst_bin_add (GST_BIN (self), self->vf_colorspace)) {
gst_object_unref (self->vf_colorspace);
self->vf_colorspace = NULL;
goto error_remove_all;
}
gst_object_ref (self->vf_colorspace);
if (!gst_element_link_filtered (self->v4l2_src, self->mjpg_demux,
src_caps))
goto error_remove_all;
if (!gst_element_link_pads (self->mjpg_demux, "jpeg", self->jpeg_dec,
"sink"))
goto error_remove_all;
if (!gst_element_link (self->jpeg_dec, self->vf_colorspace))
goto error_remove_all;
vid_pad = gst_element_get_static_pad (self->mjpg_demux, "h264");
vf_pad = gst_element_get_static_pad (self->vf_colorspace, "src");
break;
case RAW_RAW:
{
GstElement *tee = NULL;
GST_DEBUG_OBJECT (self, "Raw+Raw");
tee = gst_element_factory_make ("tee", NULL);
if (!tee || !gst_bin_add (GST_BIN (self), tee)) {
if (tee)
gst_object_unref (tee);
goto error_remove;
}
self->vf_colorspace = gst_element_factory_make (self->colorspace_name,
NULL);
self->vid_colorspace = gst_element_factory_make (self->colorspace_name,
NULL);
if (!self->vf_colorspace || !self->vid_colorspace)
goto error_remove;
if (!gst_bin_add (GST_BIN (self), self->vf_colorspace))
goto error_remove;
gst_object_ref (self->vf_colorspace);
if (!gst_bin_add (GST_BIN (self), self->vid_colorspace)) {
gst_object_unref (self->vid_colorspace);
self->vid_colorspace = NULL;
goto error_remove_all;
}
gst_object_ref (self->vid_colorspace);
if (!gst_element_link (self->v4l2_src, tee))
goto error_remove_all;
if (!gst_element_link (tee, self->vf_colorspace))
goto error_remove_all;
if (!gst_element_link (tee, self->vid_colorspace))
goto error_remove_all;
vf_pad = gst_element_get_static_pad (self->vf_colorspace, "src");
vid_pad = gst_element_get_static_pad (self->vid_colorspace, "src");
}
break;
case ENCODED_ENCODED:
{
GstElement *tee = NULL;
GST_DEBUG_OBJECT (self, "Encoded+Encoded");
tee = gst_element_factory_make ("tee", NULL);
if (!tee || !gst_bin_add (GST_BIN (self), tee)) {
if (tee)
gst_object_unref (tee);
goto error_remove;
}
if (!gst_element_link (self->v4l2_src, tee))
goto error_remove_all;
vf_pad = gst_element_get_request_pad (tee, "src_%u");
vid_pad = gst_element_get_request_pad (tee, "src_%u");
}
break;
}
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (self->vidsrc), vid_pad) ||
!gst_ghost_pad_set_target (GST_GHOST_PAD (self->vfsrc), vf_pad))
goto error_remove_all;
if (vid_pad)
gst_object_unref (vid_pad);
if (vf_pad)
gst_object_unref (vf_pad);
vid_pad = vf_pad = NULL;
if (vf_caps)
gst_caps_unref (vf_caps);
if (vid_caps)
gst_caps_unref (vid_caps);
if (src_caps)
gst_caps_unref (src_caps);
vf_caps = vid_caps = src_caps = NULL;
/* Sync children states, in sink to source order */
if (self->vid_colorspace &&
!gst_element_sync_state_with_parent (self->vid_colorspace))
goto error_remove_all;
if (self->vf_colorspace &&
!gst_element_sync_state_with_parent (self->vf_colorspace))
goto error_remove_all;
if (self->jpeg_dec && !gst_element_sync_state_with_parent (self->jpeg_dec))
goto error_remove_all;
if (self->mjpg_demux &&
!gst_element_sync_state_with_parent (self->mjpg_demux))
goto error_remove_all;
if (self->v4l2_src && !gst_element_sync_state_with_parent (self->v4l2_src))
goto error_remove_all;
/* Sync any remaining children states with bin's state */
iter = gst_bin_iterate_elements (GST_BIN (self));
iter_done = FALSE;
while (!iter_done) {
GstElement *child = NULL;
GValue data = { 0, };
switch (gst_iterator_next (iter, &data)) {
case GST_ITERATOR_OK:
child = g_value_get_object (&data);
if (!gst_element_sync_state_with_parent (child)) {
g_value_reset (&data);
gst_iterator_free (iter);
goto error_remove_all;
}
g_value_reset (&data);
break;
case GST_ITERATOR_RESYNC:
gst_iterator_resync (iter);
break;
case GST_ITERATOR_ERROR:
iter_done = TRUE;
break;
case GST_ITERATOR_DONE:
iter_done = TRUE;
break;
}
}
gst_iterator_free (iter);
self->reconfiguring = FALSE;
return TRUE;
error_remove_all:
gst_uvc_h264_src_destroy_pipeline (self, FALSE);
error_remove:
gst_element_set_state (self->v4l2_src, GST_STATE_NULL);
gst_bin_remove (GST_BIN (self), self->v4l2_src);
error:
if (self->v4l2_src)
gst_object_unref (self->v4l2_src);
self->v4l2_src = NULL;
self->v4l2_fd = -1;
self->h264_unit_id = 0;
if (self->mjpg_demux)
gst_object_unref (self->mjpg_demux);
self->mjpg_demux = NULL;
if (self->jpeg_dec)
gst_object_unref (self->jpeg_dec);
self->jpeg_dec = NULL;
if (self->vid_colorspace)
gst_object_unref (self->vid_colorspace);
self->vid_colorspace = NULL;
if (self->vf_colorspace)
gst_object_unref (self->vf_colorspace);
self->vf_colorspace = NULL;
if (src_caps)
gst_caps_unref (src_caps);
if (vf_caps)
gst_caps_unref (vf_caps);
if (vid_caps)
gst_caps_unref (vid_caps);
if (vid_pad)
gst_object_unref (vid_pad);
if (vf_pad)
gst_object_unref (vf_pad);
self->reconfiguring = FALSE;
return FALSE;
}
static GstCaps *
gst_uvc_h264_src_getcaps (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (parent);
GstCaps *template = NULL;
GstCaps *result = NULL;
if (pad == self->vfsrc)
template = gst_static_pad_template_get_caps (&vfsrc_template);
else if (pad == self->vidsrc)
template = gst_static_pad_template_get_caps (&vidsrc_template);
else
template = gst_caps_new_empty ();
if (self->v4l2_src) {
GstCaps *filter;
GstPad *v4l_pad = gst_element_get_static_pad (self->v4l2_src, "src");
GstCaps *v4l_caps = gst_pad_query_caps (v4l_pad, NULL);
GstCaps *new_caps = gst_uvc_h264_src_transform_caps (self, v4l_caps);
gst_query_parse_caps (query, &filter);
v4l_caps = gst_pad_query_caps (v4l_pad, filter);
new_caps = gst_uvc_h264_src_transform_caps (self, v4l_caps);
result = gst_caps_intersect (new_caps, template);
gst_object_unref (v4l_pad);
gst_caps_unref (v4l_caps);
gst_caps_unref (new_caps);
gst_caps_unref (template);
} else {
result = template;
}
return result;
}
static gboolean
gst_uvc_h264_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
gboolean ret = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CAPS:
gst_query_set_caps_result (query,
gst_uvc_h264_src_getcaps (pad, parent, query));
ret = TRUE;
default:
ret = gst_pad_query_default (pad, parent, query);
break;
}
return ret;
}
static gboolean
gst_uvc_h264_src_set_mode (GstBaseCameraSrc * bcamsrc, GstCameraBinMode mode)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (bcamsrc);
GST_DEBUG_OBJECT (self, "set mode to %d", mode);
return (mode == MODE_VIDEO);
}
static gboolean
gst_uvc_h264_src_start_capture (GstBaseCameraSrc * camerasrc)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (camerasrc);
gboolean ret = TRUE;
GST_DEBUG_OBJECT (self, "start capture");
if (!self->started) {
self->started = TRUE;
if (GST_STATE (self) >= GST_STATE_READY) {
ret = gst_uvc_h264_src_construct_pipeline (GST_BASE_CAMERA_SRC (self));
if (!ret) {
GST_DEBUG_OBJECT (self, "Could not start capture");
self->started = FALSE;
gst_uvc_h264_src_construct_pipeline (GST_BASE_CAMERA_SRC (self));
}
}
}
return ret;
}
static void
gst_uvc_h264_src_stop_capture (GstBaseCameraSrc * camerasrc)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (camerasrc);
GST_DEBUG_OBJECT (self, "stop capture");
if (self->started) {
self->started = FALSE;
if (GST_STATE (self) >= GST_STATE_READY)
gst_uvc_h264_src_construct_pipeline (GST_BASE_CAMERA_SRC (self));
gst_base_camera_src_finish_capture (camerasrc);
}
}
static void
gst_uvc_h264_src_pad_linking_cb (GstPad * pad,
GstPad * peer, gpointer user_data)
{
GstUvcH264Src *self = GST_UVC_H264_SRC (user_data);
gchar *pad_name = gst_pad_get_name (pad);
GST_DEBUG_OBJECT (self, "Pad %s was (un)linked. Renegotiating", pad_name);
g_free (pad_name);
if (GST_STATE (self) >= GST_STATE_READY)
gst_uvc_h264_src_construct_pipeline (GST_BASE_CAMERA_SRC (self));
}
static GstStateChangeReturn
gst_uvc_h264_src_change_state (GstElement * element, GstStateChange trans)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstUvcH264Src *self = GST_UVC_H264_SRC (element);
switch (trans) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!ensure_v4l2src (self)) {
ret = GST_STATE_CHANGE_FAILURE;
goto end;
}
gst_segment_init (&self->segment, GST_FORMAT_UNDEFINED);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
if (!self->v4l2_src)
gst_uvc_h264_src_construct_pipeline (GST_BASE_CAMERA_SRC (self));
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, trans);
if (ret == GST_STATE_CHANGE_FAILURE)
goto end;
switch (trans) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_uvc_h264_src_destroy_pipeline (self, TRUE);
break;
default:
break;
}
end:
return ret;
}