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videoaggregator: don't do caps processing that is not overridable

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Allows the subclass to completely override the chosen src caps.

This is needed as videoaggregator generally has no idea exactly
what operation is being performed.

- Adds a fixate_caps vfunc for fixation
- Merges gst_video_aggregator_update_converters() into
  gst_videoaggregator_update_src_caps() as we need some of its info
  for proper caps handling.
- Pass the downstream caps to the update_caps vfunc

https://bugzilla.gnome.org/show_bug.cgi?id=756207
This commit is contained in:
Matthew Waters 2015-10-14 21:13:57 +11:00 committed by Tim-Philipp Müller
parent f8c6be86c2
commit e03e983e90
3 changed files with 87 additions and 31 deletions
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12
ext/gl/gstglmixer.c
View file

@ -221,9 +221,17 @@ gst_gl_mixer_pad_sink_acceptcaps (GstPad * pad, GstGLMixer * mix,
/* copies the given caps */
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
_update_caps (GstVideoAggregator * vagg, GstCaps * caps, GstCaps * filter)
{
return gst_gl_caps_replace_all_caps_features (caps,
GstCaps *tmp;
if (filter) {
tmp = gst_caps_intersect (caps, filter);
} else {
tmp = caps;
}
return gst_gl_caps_replace_all_caps_features (tmp,
GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
}

6
ext/gl/gstglstereomix.c
View file

@ -33,7 +33,8 @@ GST_DEBUG_CATEGORY (gst_gl_stereo_mix_debug);
#define gst_gl_stereo_mix_parent_class parent_class
G_DEFINE_TYPE (GstGLStereoMix, gst_gl_stereo_mix, GST_TYPE_GL_MIXER);
static GstCaps *_update_caps (GstVideoAggregator * vagg, GstCaps * caps);
static GstCaps *_update_caps (GstVideoAggregator * vagg, GstCaps * caps,
GstCaps * filter);
static gboolean _negotiated_caps (GstVideoAggregator * videoaggregator,
GstCaps * caps);
gboolean gst_gl_stereo_mix_make_output (GstGLStereoMix * mix);
@ -153,7 +154,6 @@ gst_gl_stereo_mix_class_init (GstGLStereoMixClass * klass)
videoaggregator_class->get_output_buffer =
gst_gl_stereo_mix_get_output_buffer;
videoaggregator_class->find_best_format = gst_gl_stereo_mix_find_best_format;
videoaggregator_class->preserve_update_caps_result = TRUE;
base_mix_class->supported_gl_api = GST_GL_API_OPENGL | GST_GL_API_OPENGL3;
}
@ -471,7 +471,7 @@ get_converted_caps (GstGLStereoMix * mix, GstCaps * caps)
/* Return the possible output caps we decided in find_best_format() */
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
_update_caps (GstVideoAggregator * vagg, GstCaps * caps, GstCaps * filter)
{
GstGLStereoMix *mix = GST_GL_STEREO_MIX (vagg);

100
ext/gl/gstglvideomixer.c
View file

@ -460,7 +460,9 @@ static void gst_gl_video_mixer_set_property (GObject * object, guint prop_id,
static void gst_gl_video_mixer_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstCaps *_update_caps (GstVideoAggregator * vagg, GstCaps * caps);
static GstCaps *_update_caps (GstVideoAggregator * vagg, GstCaps * caps,
GstCaps * filter);
static GstCaps *_fixate_caps (GstVideoAggregator * vagg, GstCaps * caps);
static void gst_gl_video_mixer_reset (GstGLMixer * mixer);
static gboolean gst_gl_video_mixer_init_shader (GstGLMixer * mixer,
GstCaps * outcaps);
@ -863,6 +865,7 @@ gst_gl_video_mixer_class_init (GstGLVideoMixerClass * klass)
gst_gl_video_mixer_process_textures;
vagg_class->update_caps = _update_caps;
vagg_class->fixate_caps = _fixate_caps;
agg_class->sinkpads_type = GST_TYPE_GL_VIDEO_MIXER_PAD;
@ -912,9 +915,9 @@ gst_gl_video_mixer_get_property (GObject * object, guint prop_id,
static void
_mixer_pad_get_output_size (GstGLVideoMixer * mix,
GstGLVideoMixerPad * mix_pad, gint * width, gint * height)
GstGLVideoMixerPad * mix_pad, gint out_par_n, gint out_par_d, gint * width,
gint * height)
{
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
GstVideoAggregatorPad *vagg_pad = GST_VIDEO_AGGREGATOR_PAD (mix_pad);
gint pad_width, pad_height;
guint dar_n, dar_d;
@ -937,13 +940,10 @@ _mixer_pad_get_output_size (GstGLVideoMixer * mix,
gst_video_calculate_display_ratio (&dar_n, &dar_d, pad_width, pad_height,
GST_VIDEO_INFO_PAR_N (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg_pad->info),
GST_VIDEO_INFO_PAR_N (&vagg->info), GST_VIDEO_INFO_PAR_D (&vagg->info)
);
GST_VIDEO_INFO_PAR_D (&vagg_pad->info), out_par_n, out_par_d);
GST_LOG_OBJECT (mix_pad, "scaling %ux%u by %u/%u (%u/%u / %u/%u)", pad_width,
pad_height, dar_n, dar_d, GST_VIDEO_INFO_PAR_N (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg_pad->info),
GST_VIDEO_INFO_PAR_N (&vagg->info), GST_VIDEO_INFO_PAR_D (&vagg->info));
GST_VIDEO_INFO_PAR_D (&vagg_pad->info), out_par_n, out_par_d);
if (pad_height % dar_n == 0) {
pad_width = gst_util_uint64_scale_int (pad_height, dar_n, dar_d);
@ -960,17 +960,45 @@ _mixer_pad_get_output_size (GstGLVideoMixer * mix,
}
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
_update_caps (GstVideoAggregator * vagg, GstCaps * caps, GstCaps * filter)
{
GstCaps *ret;
ret =
GST_VIDEO_AGGREGATOR_CLASS (gst_gl_video_mixer_parent_class)->update_caps
(vagg, caps, NULL);
if (filter) {
GstCaps *tmp = gst_caps_intersect (ret, filter);
gst_caps_unref (ret);
ret = tmp;
}
return ret;
}
static GstCaps *
_fixate_caps (GstVideoAggregator * vagg, GstCaps * caps)
{
GstGLVideoMixer *mix = GST_GL_VIDEO_MIXER (vagg);
GList *l;
gint best_width = -1, best_height = -1;
GstVideoInfo info;
gint best_width = 0, best_height = 0;
gint best_fps_n = 0, best_fps_d = 0;
gint par_n, par_d;
gdouble best_fps = 0.;
GstCaps *ret = NULL;
int i;
GstStructure *s;
GList *l;
caps = gst_caps_make_writable (caps);
gst_video_info_from_caps (&info, caps);
ret = gst_caps_make_writable (caps);
/* we need this to calculate how large to make the output frame */
s = gst_caps_get_structure (ret, 0);
if (gst_structure_has_field (s, "pixel-aspect-ratio")) {
gst_structure_fixate_field_nearest_fraction (s, "pixel-aspect-ratio", 1, 1);
gst_structure_get_fraction (s, "pixel-aspect-ratio", &par_n, &par_d);
} else {
par_n = par_d = 1;
}
GST_OBJECT_LOCK (vagg);
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
@ -978,8 +1006,12 @@ _update_caps (GstVideoAggregator * vagg, GstCaps * caps)
GstGLVideoMixerPad *mixer_pad = GST_GL_VIDEO_MIXER_PAD (vaggpad);
gint this_width, this_height;
gint width, height;
gint fps_n, fps_d;
gdouble cur_fps;
_mixer_pad_get_output_size (mix, mixer_pad, &width, &height);
fps_n = GST_VIDEO_INFO_FPS_N (&vaggpad->info);
fps_d = GST_VIDEO_INFO_FPS_D (&vaggpad->info);
_mixer_pad_get_output_size (mix, mixer_pad, par_n, par_d, &width, &height);
if (width == 0 || height == 0)
continue;
@ -991,20 +1023,34 @@ _update_caps (GstVideoAggregator * vagg, GstCaps * caps)
best_width = this_width;
if (best_height < this_height)
best_height = this_height;
if (fps_d == 0)
cur_fps = 0.0;
else
gst_util_fraction_to_double (fps_n, fps_d, &cur_fps);
if (best_fps < cur_fps) {
best_fps = cur_fps;
best_fps_n = fps_n;
best_fps_d = fps_d;
}
}
GST_OBJECT_UNLOCK (vagg);
ret =
GST_VIDEO_AGGREGATOR_CLASS (gst_gl_video_mixer_parent_class)->update_caps
(vagg, caps);
for (i = 0; i < gst_caps_get_size (ret); i++) {
GstStructure *s = gst_caps_get_structure (ret, i);
gst_structure_set (s, "width", G_TYPE_INT, best_width, "height", G_TYPE_INT,
best_height, NULL);
if (best_fps_n <= 0 || best_fps_d <= 0 || best_fps == 0.0) {
best_fps_n = 25;
best_fps_d = 1;
best_fps = 25.0;
}
s = gst_caps_get_structure (ret, 0);
gst_structure_fixate_field_nearest_int (s, "width", best_width);
gst_structure_fixate_field_nearest_int (s, "height", best_height);
gst_structure_fixate_field_nearest_fraction (s, "framerate", best_fps_n,
best_fps_d);
gst_structure_fixate_field_nearest_fraction (s, "pixel-aspect-ratio", 1, 1);
ret = gst_caps_fixate (ret);
return ret;
}
@ -1397,7 +1443,9 @@ gst_gl_video_mixer_callback (gpointer stuff)
gint pad_width, pad_height;
gfloat w, h;
_mixer_pad_get_output_size (video_mixer, pad, &pad_width, &pad_height);
_mixer_pad_get_output_size (video_mixer, pad,
GST_VIDEO_INFO_PAR_N (&vagg->info),
GST_VIDEO_INFO_PAR_D (&vagg->info), &pad_width, &pad_height);
w = ((gfloat) pad_width / (gfloat) out_width);
h = ((gfloat) pad_height / (gfloat) out_height);