| /* |
| * GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * Copyright (C) 2002,2007 David A. Schleef <ds@schleef.org> |
| * Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com> |
| * Copyright (C) 2015 Matthew Waters <matthew@centricular.com> |
| * |
| * 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-gltestsrc |
| * |
| * <refsect2> |
| * <para> |
| * The gltestsrc element is used to produce test video texture. |
| * The video test produced can be controlled with the "pattern" |
| * property. |
| * </para> |
| * <title>Example launch line</title> |
| * <para> |
| * <programlisting> |
| * gst-launch-1.0 -v gltestsrc pattern=smpte ! glimagesink |
| * </programlisting> |
| * Shows original SMPTE color bars in a window. |
| * </para> |
| * </refsect2> |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include "gstgltestsrc.h" |
| #include "gltestsrc.h" |
| #include <gst/gst-i18n-plugin.h> |
| |
| #define USE_PEER_BUFFERALLOC |
| #define SUPPORTED_GL_APIS (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2) |
| |
| GST_DEBUG_CATEGORY_STATIC (gl_test_src_debug); |
| #define GST_CAT_DEFAULT gl_test_src_debug |
| |
| enum |
| { |
| PROP_0, |
| PROP_PATTERN, |
| PROP_TIMESTAMP_OFFSET, |
| PROP_IS_LIVE |
| /* FILL ME */ |
| }; |
| |
| /* *INDENT-OFF* */ |
| static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src", |
| GST_PAD_SRC, |
| GST_PAD_ALWAYS, |
| GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), " |
| "format = (string) RGBA, " |
| "width = " GST_VIDEO_SIZE_RANGE ", " |
| "height = " GST_VIDEO_SIZE_RANGE ", " |
| "framerate = " GST_VIDEO_FPS_RANGE "," |
| "texture-target = (string) 2D") |
| ); |
| /* *INDENT-ON* */ |
| |
| #define gst_gl_test_src_parent_class parent_class |
| G_DEFINE_TYPE (GstGLTestSrc, gst_gl_test_src, GST_TYPE_PUSH_SRC); |
| |
| static void gst_gl_test_src_set_pattern (GstGLTestSrc * gltestsrc, |
| int pattern_type); |
| static void gst_gl_test_src_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec); |
| static void gst_gl_test_src_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec); |
| |
| static gboolean gst_gl_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps); |
| static GstCaps *gst_gl_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps); |
| |
| static gboolean gst_gl_test_src_is_seekable (GstBaseSrc * psrc); |
| static gboolean gst_gl_test_src_do_seek (GstBaseSrc * bsrc, |
| GstSegment * segment); |
| static gboolean gst_gl_test_src_query (GstBaseSrc * bsrc, GstQuery * query); |
| static void gst_gl_test_src_set_context (GstElement * element, |
| GstContext * context); |
| static GstStateChangeReturn gst_gl_test_src_change_state (GstElement * element, |
| GstStateChange transition); |
| |
| static void gst_gl_test_src_get_times (GstBaseSrc * basesrc, |
| GstBuffer * buffer, GstClockTime * start, GstClockTime * end); |
| static GstFlowReturn gst_gl_test_src_fill (GstPushSrc * psrc, |
| GstBuffer * buffer); |
| static gboolean gst_gl_test_src_start (GstBaseSrc * basesrc); |
| static gboolean gst_gl_test_src_stop (GstBaseSrc * basesrc); |
| static gboolean gst_gl_test_src_decide_allocation (GstBaseSrc * basesrc, |
| GstQuery * query); |
| |
| static void gst_gl_test_src_callback (gpointer stuff); |
| |
| static gboolean gst_gl_test_src_init_shader (GstGLTestSrc * gltestsrc); |
| |
| #define GST_TYPE_GL_TEST_SRC_PATTERN (gst_gl_test_src_pattern_get_type ()) |
| static GType |
| gst_gl_test_src_pattern_get_type (void) |
| { |
| static GType gl_test_src_pattern_type = 0; |
| static const GEnumValue pattern_types[] = { |
| {GST_GL_TEST_SRC_SMPTE, "SMPTE 100% color bars", "smpte"}, |
| {GST_GL_TEST_SRC_SNOW, "Random (television snow)", "snow"}, |
| {GST_GL_TEST_SRC_BLACK, "100% Black", "black"}, |
| {GST_GL_TEST_SRC_WHITE, "100% White", "white"}, |
| {GST_GL_TEST_SRC_RED, "Red", "red"}, |
| {GST_GL_TEST_SRC_GREEN, "Green", "green"}, |
| {GST_GL_TEST_SRC_BLUE, "Blue", "blue"}, |
| {GST_GL_TEST_SRC_CHECKERS1, "Checkers 1px", "checkers-1"}, |
| {GST_GL_TEST_SRC_CHECKERS2, "Checkers 2px", "checkers-2"}, |
| {GST_GL_TEST_SRC_CHECKERS4, "Checkers 4px", "checkers-4"}, |
| {GST_GL_TEST_SRC_CHECKERS8, "Checkers 8px", "checkers-8"}, |
| {GST_GL_TEST_SRC_CIRCULAR, "Circular", "circular"}, |
| {GST_GL_TEST_SRC_BLINK, "Blink", "blink"}, |
| {GST_GL_TEST_SRC_MANDELBROT, "Mandelbrot Fractal", "mandelbrot"}, |
| {0, NULL, NULL} |
| }; |
| |
| if (!gl_test_src_pattern_type) { |
| gl_test_src_pattern_type = |
| g_enum_register_static ("GstGLTestSrcPattern", pattern_types); |
| } |
| return gl_test_src_pattern_type; |
| } |
| |
| static void |
| gst_gl_test_src_class_init (GstGLTestSrcClass * klass) |
| { |
| GObjectClass *gobject_class; |
| GstBaseSrcClass *gstbasesrc_class; |
| GstPushSrcClass *gstpushsrc_class; |
| GstElementClass *element_class; |
| |
| GST_DEBUG_CATEGORY_INIT (gl_test_src_debug, "gltestsrc", 0, |
| "Video Test Source"); |
| |
| gobject_class = (GObjectClass *) klass; |
| gstbasesrc_class = (GstBaseSrcClass *) klass; |
| gstpushsrc_class = (GstPushSrcClass *) klass; |
| element_class = GST_ELEMENT_CLASS (klass); |
| |
| gobject_class->set_property = gst_gl_test_src_set_property; |
| gobject_class->get_property = gst_gl_test_src_get_property; |
| |
| g_object_class_install_property (gobject_class, PROP_PATTERN, |
| g_param_spec_enum ("pattern", "Pattern", |
| "Type of test pattern to generate", GST_TYPE_GL_TEST_SRC_PATTERN, |
| GST_GL_TEST_SRC_SMPTE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, |
| PROP_TIMESTAMP_OFFSET, g_param_spec_int64 ("timestamp-offset", |
| "Timestamp offset", |
| "An offset added to timestamps set on buffers (in ns)", G_MININT64, |
| G_MAXINT64, 0, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| g_object_class_install_property (gobject_class, PROP_IS_LIVE, |
| g_param_spec_boolean ("is-live", "Is Live", |
| "Whether to act as a live source", FALSE, |
| G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); |
| |
| gst_element_class_set_metadata (element_class, "Video test source", |
| "Source/Video", "Creates a test video stream", |
| "David A. Schleef <ds@schleef.org>"); |
| |
| gst_element_class_add_static_pad_template (element_class, &src_factory); |
| |
| element_class->set_context = gst_gl_test_src_set_context; |
| element_class->change_state = gst_gl_test_src_change_state; |
| |
| gstbasesrc_class->set_caps = gst_gl_test_src_setcaps; |
| gstbasesrc_class->is_seekable = gst_gl_test_src_is_seekable; |
| gstbasesrc_class->do_seek = gst_gl_test_src_do_seek; |
| gstbasesrc_class->query = gst_gl_test_src_query; |
| gstbasesrc_class->get_times = gst_gl_test_src_get_times; |
| gstbasesrc_class->start = gst_gl_test_src_start; |
| gstbasesrc_class->stop = gst_gl_test_src_stop; |
| gstbasesrc_class->fixate = gst_gl_test_src_fixate; |
| gstbasesrc_class->decide_allocation = gst_gl_test_src_decide_allocation; |
| |
| gstpushsrc_class->fill = gst_gl_test_src_fill; |
| } |
| |
| static void |
| gst_gl_test_src_init (GstGLTestSrc * src) |
| { |
| gst_gl_test_src_set_pattern (src, GST_GL_TEST_SRC_SMPTE); |
| |
| src->timestamp_offset = 0; |
| |
| /* we operate in time */ |
| gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME); |
| gst_base_src_set_live (GST_BASE_SRC (src), FALSE); |
| } |
| |
| static GstCaps * |
| gst_gl_test_src_fixate (GstBaseSrc * bsrc, GstCaps * caps) |
| { |
| GstStructure *structure; |
| |
| GST_DEBUG ("fixate"); |
| |
| caps = gst_caps_make_writable (caps); |
| |
| structure = gst_caps_get_structure (caps, 0); |
| |
| gst_structure_fixate_field_nearest_int (structure, "width", 320); |
| gst_structure_fixate_field_nearest_int (structure, "height", 240); |
| gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1); |
| |
| caps = GST_BASE_SRC_CLASS (parent_class)->fixate (bsrc, caps); |
| |
| return caps; |
| } |
| |
| static void |
| gst_gl_test_src_set_pattern (GstGLTestSrc * gltestsrc, gint pattern_type) |
| { |
| gltestsrc->set_pattern = pattern_type; |
| } |
| |
| static void |
| gst_gl_test_src_set_property (GObject * object, guint prop_id, |
| const GValue * value, GParamSpec * pspec) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (object); |
| |
| switch (prop_id) { |
| case PROP_PATTERN: |
| gst_gl_test_src_set_pattern (src, g_value_get_enum (value)); |
| break; |
| case PROP_TIMESTAMP_OFFSET: |
| src->timestamp_offset = g_value_get_int64 (value); |
| break; |
| case PROP_IS_LIVE: |
| gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value)); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void |
| gst_gl_test_src_get_property (GObject * object, guint prop_id, |
| GValue * value, GParamSpec * pspec) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (object); |
| |
| switch (prop_id) { |
| case PROP_PATTERN: |
| g_value_set_enum (value, src->set_pattern); |
| break; |
| case PROP_TIMESTAMP_OFFSET: |
| g_value_set_int64 (value, src->timestamp_offset); |
| break; |
| case PROP_IS_LIVE: |
| g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src))); |
| break; |
| default: |
| G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); |
| break; |
| } |
| } |
| |
| static gboolean |
| gst_gl_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps) |
| { |
| GstGLTestSrc *gltestsrc = GST_GL_TEST_SRC (bsrc); |
| |
| GST_DEBUG ("setcaps"); |
| |
| if (!gst_video_info_from_caps (&gltestsrc->out_info, caps)) |
| goto wrong_caps; |
| |
| gltestsrc->negotiated = TRUE; |
| |
| gst_caps_replace (&gltestsrc->out_caps, caps); |
| |
| return TRUE; |
| |
| /* ERRORS */ |
| wrong_caps: |
| { |
| GST_WARNING ("wrong caps"); |
| return FALSE; |
| } |
| } |
| |
| static void |
| gst_gl_test_src_set_context (GstElement * element, GstContext * context) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (element); |
| |
| gst_gl_handle_set_context (element, context, &src->display, |
| &src->other_context); |
| |
| if (src->display) |
| gst_gl_display_filter_gl_api (src->display, SUPPORTED_GL_APIS); |
| |
| GST_ELEMENT_CLASS (parent_class)->set_context (element, context); |
| } |
| |
| static gboolean |
| gst_gl_test_src_query (GstBaseSrc * bsrc, GstQuery * query) |
| { |
| gboolean res = FALSE; |
| GstGLTestSrc *src; |
| |
| src = GST_GL_TEST_SRC (bsrc); |
| |
| switch (GST_QUERY_TYPE (query)) { |
| case GST_QUERY_CONTEXT: |
| { |
| const gchar *context_type; |
| GstContext *context, *old_context; |
| |
| res = gst_gl_handle_context_query ((GstElement *) src, query, |
| &src->display, &src->other_context); |
| if (src->display) |
| gst_gl_display_filter_gl_api (src->display, SUPPORTED_GL_APIS); |
| |
| gst_query_parse_context_type (query, &context_type); |
| |
| if (g_strcmp0 (context_type, "gst.gl.local_context") == 0) { |
| GstStructure *s; |
| |
| gst_query_parse_context (query, &old_context); |
| |
| if (old_context) |
| context = gst_context_copy (old_context); |
| else |
| context = gst_context_new ("gst.gl.local_context", FALSE); |
| |
| s = gst_context_writable_structure (context); |
| gst_structure_set (s, "context", GST_GL_TYPE_CONTEXT, src->context, |
| NULL); |
| gst_query_set_context (query, context); |
| gst_context_unref (context); |
| |
| res = src->context != NULL; |
| } |
| GST_LOG_OBJECT (src, "context query of type %s %i", context_type, res); |
| |
| if (res) |
| return res; |
| |
| break; |
| } |
| case GST_QUERY_CONVERT: |
| { |
| GstFormat src_fmt, dest_fmt; |
| gint64 src_val, dest_val; |
| |
| gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val); |
| res = |
| gst_video_info_convert (&src->out_info, src_fmt, src_val, dest_fmt, |
| &dest_val); |
| gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val); |
| |
| return res; |
| } |
| default: |
| break; |
| } |
| |
| return GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query); |
| } |
| |
| static void |
| gst_gl_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer, |
| GstClockTime * start, GstClockTime * end) |
| { |
| /* for live sources, sync on the timestamp of the buffer */ |
| if (gst_base_src_is_live (basesrc)) { |
| GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer); |
| |
| if (GST_CLOCK_TIME_IS_VALID (timestamp)) { |
| /* get duration to calculate end time */ |
| GstClockTime duration = GST_BUFFER_DURATION (buffer); |
| |
| if (GST_CLOCK_TIME_IS_VALID (duration)) |
| *end = timestamp + duration; |
| *start = timestamp; |
| } |
| } else { |
| *start = -1; |
| *end = -1; |
| } |
| } |
| |
| static gboolean |
| gst_gl_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment) |
| { |
| GstClockTime time; |
| GstGLTestSrc *src; |
| |
| src = GST_GL_TEST_SRC (bsrc); |
| |
| segment->time = segment->start; |
| time = segment->position; |
| |
| /* now move to the time indicated */ |
| if (src->out_info.fps_n) { |
| src->n_frames = gst_util_uint64_scale (time, |
| src->out_info.fps_n, src->out_info.fps_d * GST_SECOND); |
| } else |
| src->n_frames = 0; |
| |
| if (src->out_info.fps_n) { |
| src->running_time = gst_util_uint64_scale (src->n_frames, |
| src->out_info.fps_d * GST_SECOND, src->out_info.fps_n); |
| } else { |
| /* FIXME : Not sure what to set here */ |
| src->running_time = 0; |
| } |
| |
| g_return_val_if_fail (src->running_time <= time, FALSE); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gl_test_src_is_seekable (GstBaseSrc * psrc) |
| { |
| /* we're seekable... */ |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gl_test_src_init_shader (GstGLTestSrc * gltestsrc) |
| { |
| if (gst_gl_context_get_gl_api (gltestsrc->context)) { |
| /* blocking call, wait until the opengl thread has compiled the shader */ |
| // if (gltestsrc->vertex_src == NULL) |
| // return FALSE; |
| // return gst_gl_context_gen_shader (gltestsrc->context, gltestsrc->vertex_src, |
| // gltestsrc->fragment_src, &gltestsrc->shader); |
| } |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| gst_gl_test_src_fill (GstPushSrc * psrc, GstBuffer * buffer) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (psrc); |
| GstClockTime next_time; |
| gint width, height; |
| GstVideoFrame out_frame; |
| GstGLSyncMeta *sync_meta; |
| guint out_tex; |
| |
| if (G_UNLIKELY (!src->negotiated || !src->context)) |
| goto not_negotiated; |
| |
| width = GST_VIDEO_INFO_WIDTH (&src->out_info); |
| height = GST_VIDEO_INFO_HEIGHT (&src->out_info); |
| |
| /* 0 framerate and we are at the second frame, eos */ |
| if (G_UNLIKELY (GST_VIDEO_INFO_FPS_N (&src->out_info) == 0 |
| && src->n_frames == 1)) |
| goto eos; |
| |
| if (!gst_video_frame_map (&out_frame, &src->out_info, buffer, |
| GST_MAP_WRITE | GST_MAP_GL)) { |
| return GST_FLOW_NOT_NEGOTIATED; |
| } |
| |
| out_tex = *(guint *) out_frame.data[0]; |
| |
| if (!gst_gl_context_use_fbo_v2 (src->context, width, height, src->fbo, |
| src->depthbuffer, out_tex, gst_gl_test_src_callback, |
| (gpointer) src)) { |
| gst_video_frame_unmap (&out_frame); |
| goto gl_error; |
| } |
| gst_video_frame_unmap (&out_frame); |
| if (!src->gl_result) |
| goto gl_error; |
| |
| sync_meta = gst_buffer_get_gl_sync_meta (buffer); |
| if (sync_meta) |
| gst_gl_sync_meta_set_sync_point (sync_meta, src->context); |
| |
| GST_BUFFER_TIMESTAMP (buffer) = src->timestamp_offset + src->running_time; |
| GST_BUFFER_OFFSET (buffer) = src->n_frames; |
| src->n_frames++; |
| GST_BUFFER_OFFSET_END (buffer) = src->n_frames; |
| if (src->out_info.fps_n) { |
| next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND, |
| src->out_info.fps_d, src->out_info.fps_n); |
| GST_BUFFER_DURATION (buffer) = next_time - src->running_time; |
| } else { |
| next_time = src->timestamp_offset; |
| /* NONE means forever */ |
| GST_BUFFER_DURATION (buffer) = GST_CLOCK_TIME_NONE; |
| } |
| |
| src->running_time = next_time; |
| |
| return GST_FLOW_OK; |
| |
| gl_error: |
| { |
| GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (_("failed to draw pattern")), |
| (_("A GL error occured"))); |
| return GST_FLOW_NOT_NEGOTIATED; |
| } |
| not_negotiated: |
| { |
| GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL), |
| (_("format wasn't negotiated before get function"))); |
| return GST_FLOW_NOT_NEGOTIATED; |
| } |
| eos: |
| { |
| GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames); |
| return GST_FLOW_EOS; |
| } |
| } |
| |
| static gboolean |
| gst_gl_test_src_start (GstBaseSrc * basesrc) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc); |
| |
| if (!gst_gl_ensure_element_data (src, &src->display, &src->other_context)) |
| return FALSE; |
| |
| gst_gl_display_filter_gl_api (src->display, SUPPORTED_GL_APIS); |
| |
| src->running_time = 0; |
| src->n_frames = 0; |
| src->negotiated = FALSE; |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| gst_gl_test_src_stop (GstBaseSrc * basesrc) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc); |
| |
| gst_caps_replace (&src->out_caps, NULL); |
| |
| if (src->context) { |
| if (src->shader) { |
| gst_object_unref (src->shader); |
| src->shader = NULL; |
| } |
| //blocking call, delete the FBO |
| gst_gl_context_del_fbo (src->context, src->fbo, src->depthbuffer); |
| gst_object_unref (src->context); |
| src->context = NULL; |
| } |
| |
| if (src->src_impl) { |
| src->src_funcs->free (src->src_impl); |
| src->src_impl = NULL; |
| } |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| _find_local_gl_context (GstGLTestSrc * src) |
| { |
| GstQuery *query; |
| GstContext *context; |
| const GstStructure *s; |
| |
| if (src->context) |
| return TRUE; |
| |
| query = gst_query_new_context ("gst.gl.local_context"); |
| if (!src->context && gst_gl_run_query (GST_ELEMENT (src), query, GST_PAD_SRC)) { |
| gst_query_parse_context (query, &context); |
| if (context) { |
| s = gst_context_get_structure (context); |
| gst_structure_get (s, "context", GST_GL_TYPE_CONTEXT, &src->context, |
| NULL); |
| } |
| } |
| if (!src->context |
| && gst_gl_run_query (GST_ELEMENT (src), query, GST_PAD_SINK)) { |
| gst_query_parse_context (query, &context); |
| if (context) { |
| s = gst_context_get_structure (context); |
| gst_structure_get (s, "context", GST_GL_TYPE_CONTEXT, &src->context, |
| NULL); |
| } |
| } |
| |
| GST_DEBUG_OBJECT (src, "found local context %p", src->context); |
| |
| gst_query_unref (query); |
| |
| if (src->context) |
| return TRUE; |
| |
| return FALSE; |
| } |
| |
| static gboolean |
| gst_gl_test_src_decide_allocation (GstBaseSrc * basesrc, GstQuery * query) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc); |
| GstBufferPool *pool = NULL; |
| GstStructure *config; |
| GstCaps *caps; |
| guint min, max, size; |
| gboolean update_pool; |
| GError *error = NULL; |
| guint out_width, out_height; |
| |
| if (!gst_gl_ensure_element_data (src, &src->display, &src->other_context)) |
| return FALSE; |
| |
| gst_gl_display_filter_gl_api (src->display, SUPPORTED_GL_APIS); |
| |
| _find_local_gl_context (src); |
| |
| if (!src->context) { |
| GST_OBJECT_LOCK (src->display); |
| do { |
| if (src->context) { |
| gst_object_unref (src->context); |
| src->context = NULL; |
| } |
| /* just get a GL context. we don't care */ |
| src->context = |
| gst_gl_display_get_gl_context_for_thread (src->display, NULL); |
| if (!src->context) { |
| if (!gst_gl_display_create_context (src->display, src->other_context, |
| &src->context, &error)) { |
| GST_OBJECT_UNLOCK (src->display); |
| goto context_error; |
| } |
| } |
| } while (!gst_gl_display_add_context (src->display, src->context)); |
| GST_OBJECT_UNLOCK (src->display); |
| } |
| |
| if ((gst_gl_context_get_gl_api (src->context) & SUPPORTED_GL_APIS) == 0) |
| goto unsupported_gl_api; |
| |
| out_width = GST_VIDEO_INFO_WIDTH (&src->out_info); |
| out_height = GST_VIDEO_INFO_HEIGHT (&src->out_info); |
| |
| if (!gst_gl_context_gen_fbo (src->context, out_width, out_height, |
| &src->fbo, &src->depthbuffer)) |
| goto context_error; |
| |
| gst_query_parse_allocation (query, &caps, NULL); |
| |
| if (gst_query_get_n_allocation_pools (query) > 0) { |
| gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); |
| |
| update_pool = TRUE; |
| } else { |
| GstVideoInfo vinfo; |
| |
| gst_video_info_init (&vinfo); |
| gst_video_info_from_caps (&vinfo, caps); |
| size = vinfo.size; |
| min = max = 0; |
| update_pool = FALSE; |
| } |
| |
| if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) { |
| /* can't use this pool */ |
| if (pool) |
| gst_object_unref (pool); |
| pool = gst_gl_buffer_pool_new (src->context); |
| } |
| config = gst_buffer_pool_get_config (pool); |
| |
| gst_buffer_pool_config_set_params (config, caps, size, min, max); |
| gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); |
| if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL)) |
| gst_buffer_pool_config_add_option (config, |
| GST_BUFFER_POOL_OPTION_GL_SYNC_META); |
| gst_buffer_pool_config_add_option (config, |
| GST_BUFFER_POOL_OPTION_VIDEO_GL_TEXTURE_UPLOAD_META); |
| |
| gst_buffer_pool_set_config (pool, config); |
| |
| if (update_pool) |
| gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max); |
| else |
| gst_query_add_allocation_pool (query, pool, size, min, max); |
| |
| gst_gl_test_src_init_shader (src); |
| |
| gst_object_unref (pool); |
| |
| return TRUE; |
| |
| unsupported_gl_api: |
| { |
| GstGLAPI gl_api = gst_gl_context_get_gl_api (src->context); |
| gchar *gl_api_str = gst_gl_api_to_string (gl_api); |
| gchar *supported_gl_api_str = gst_gl_api_to_string (SUPPORTED_GL_APIS); |
| GST_ELEMENT_ERROR (src, RESOURCE, BUSY, |
| ("GL API's not compatible context: %s supported: %s", gl_api_str, |
| supported_gl_api_str), (NULL)); |
| |
| g_free (supported_gl_api_str); |
| g_free (gl_api_str); |
| return FALSE; |
| } |
| context_error: |
| { |
| GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, ("%s", error->message), |
| (NULL)); |
| g_clear_error (&error); |
| if (src->context) |
| gst_object_unref (src->context); |
| src->context = NULL; |
| return FALSE; |
| } |
| } |
| |
| //opengl scene |
| static void |
| gst_gl_test_src_callback (gpointer stuff) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (stuff); |
| const struct SrcFuncs *funcs; |
| |
| funcs = src->src_funcs; |
| |
| if (!funcs || src->set_pattern != src->active_pattern) { |
| if (src->src_impl && funcs) |
| funcs->free (src->src_impl); |
| src->src_funcs = funcs = |
| gst_gl_test_src_get_src_funcs_for_pattern (src->set_pattern); |
| if (funcs == NULL) { |
| GST_ERROR_OBJECT (src, "Could not find an implementation of the " |
| "requested pattern"); |
| src->gl_result = FALSE; |
| return; |
| } |
| src->src_impl = funcs->new (src); |
| if (!(src->gl_result = |
| funcs->init (src->src_impl, src->context, &src->out_info))) { |
| GST_ERROR_OBJECT (src, "Failed to initialize pattern"); |
| return; |
| } |
| src->active_pattern = src->set_pattern; |
| } |
| |
| src->gl_result = funcs->fill_bound_fbo (src->src_impl); |
| if (!src->gl_result) |
| GST_ERROR_OBJECT (src, "Failed to render the pattern"); |
| } |
| |
| static GstStateChangeReturn |
| gst_gl_test_src_change_state (GstElement * element, GstStateChange transition) |
| { |
| GstGLTestSrc *src = GST_GL_TEST_SRC (element); |
| GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; |
| |
| GST_DEBUG_OBJECT (src, "changing state: %s => %s", |
| gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)), |
| gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition))); |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_NULL_TO_READY: |
| if (!gst_gl_ensure_element_data (element, &src->display, |
| &src->other_context)) |
| return GST_STATE_CHANGE_FAILURE; |
| |
| gst_gl_display_filter_gl_api (src->display, SUPPORTED_GL_APIS); |
| break; |
| default: |
| break; |
| } |
| |
| ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition); |
| if (ret == GST_STATE_CHANGE_FAILURE) |
| return ret; |
| |
| switch (transition) { |
| case GST_STATE_CHANGE_READY_TO_NULL: |
| if (src->other_context) { |
| gst_object_unref (src->other_context); |
| src->other_context = NULL; |
| } |
| |
| if (src->display) { |
| gst_object_unref (src->display); |
| src->display = NULL; |
| } |
| break; |
| default: |
| break; |
| } |
| |
| return ret; |
| } |