| /* GStreamer |
| * |
| * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net> |
| * 2006 Edgard Lima <edgard.lima@gmail.com> |
| * 2009 Texas Instruments, Inc - http://www.ti.com/ |
| * |
| * gstv4l2bufferpool.h V4L2 buffer pool class |
| * |
| * 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. |
| */ |
| |
| #ifndef __GST_V4L2_BUFFER_POOL_H__ |
| #define __GST_V4L2_BUFFER_POOL_H__ |
| |
| #include <gst/gst.h> |
| |
| typedef struct _GstV4l2BufferPool GstV4l2BufferPool; |
| typedef struct _GstV4l2BufferPoolClass GstV4l2BufferPoolClass; |
| typedef struct _GstV4l2Meta GstV4l2Meta; |
| |
| #include "gstv4l2object.h" |
| #include "gstv4l2allocator.h" |
| |
| G_BEGIN_DECLS |
| |
| #define GST_TYPE_V4L2_BUFFER_POOL (gst_v4l2_buffer_pool_get_type()) |
| #define GST_IS_V4L2_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_V4L2_BUFFER_POOL)) |
| #define GST_V4L2_BUFFER_POOL(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_V4L2_BUFFER_POOL, GstV4l2BufferPool)) |
| #define GST_V4L2_BUFFER_POOL_CAST(obj) ((GstV4l2BufferPool*)(obj)) |
| |
| /* This flow return is used to indicated that the last buffer of a |
| * drain has been found. This should normally only occure for |
| * mem-2-mem devices. */ |
| #define GST_V4L2_FLOW_LAST_BUFFER GST_FLOW_CUSTOM_SUCCESS |
| |
| /* This flow return is used to indicated that the returned buffer was marked |
| * with the error flag and had no payload. This error should be recovered by |
| * simply waiting for next buffer. */ |
| #define GST_V4L2_FLOW_CORRUPTED_BUFFER GST_FLOW_CUSTOM_SUCCESS_1 |
| |
| /* This flow return is used to indicated that the last buffer of a |
| * resoltuion change has been found. This should normally only |
| * occure for mem-2-mem devices. */ |
| #define GST_V4L2_FLOW_SOURCE_CHANGE GST_FLOW_CUSTOM_SUCCESS_2 |
| |
| struct _GstV4l2BufferPool |
| { |
| GstBufferPool parent; |
| |
| GstV4l2Object *obj; /* the v4l2 object */ |
| gint video_fd; /* a dup(2) of the v4l2object's video_fd */ |
| GstPoll *poll; /* a poll for video_fd */ |
| GstPollFD pollfd; |
| gboolean can_poll_device; |
| |
| gboolean empty; |
| GCond empty_cond; |
| |
| GstV4l2Allocator *vallocator; |
| GstAllocator *allocator; |
| GstAllocationParams params; |
| GstBufferPool *other_pool; |
| guint size; |
| GstVideoInfo caps_info; /* Default video information */ |
| |
| gboolean add_videometa; /* set if video meta should be added */ |
| gboolean enable_copy_threshold; /* If copy_threshold should be set */ |
| |
| guint min_latency; /* number of buffers we will hold */ |
| guint max_latency; /* number of buffers we can hold */ |
| guint num_queued; /* number of buffers queued in the driver */ |
| guint copy_threshold; /* when our pool runs lower, start handing out copies */ |
| |
| gboolean streaming; |
| gboolean flushing; |
| |
| GstBuffer *buffers[VIDEO_MAX_FRAME]; |
| |
| /* signal handlers */ |
| gulong group_released_handler; |
| |
| /* Control to warn only once on buggy feild driver bug */ |
| gboolean has_warned_on_buggy_field; |
| }; |
| |
| struct _GstV4l2BufferPoolClass |
| { |
| GstBufferPoolClass parent_class; |
| }; |
| |
| GType gst_v4l2_buffer_pool_get_type (void); |
| |
| GstBufferPool * gst_v4l2_buffer_pool_new (GstV4l2Object *obj, GstCaps *caps); |
| |
| GstFlowReturn gst_v4l2_buffer_pool_process (GstV4l2BufferPool * bpool, GstBuffer ** buf); |
| |
| void gst_v4l2_buffer_pool_set_other_pool (GstV4l2BufferPool * pool, |
| GstBufferPool * other_pool); |
| void gst_v4l2_buffer_pool_copy_at_threshold (GstV4l2BufferPool * pool, |
| gboolean copy); |
| |
| gboolean gst_v4l2_buffer_pool_flush (GstBufferPool *pool); |
| |
| G_END_DECLS |
| |
| #endif /*__GST_V4L2_BUFFER_POOL_H__ */ |