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videoaggregator: operate on caps rather than video info

Browse source 
Otherwise the CapsFeatures will be lost along with the possibility
of multiple output types and formats.

https://bugzilla.gnome.org/show_bug.cgi?id=738129
This commit is contained in:
Matthew Waters 2014-10-20 10:34:27 +11:00
parent 4cc6c7fe3b
commit f0caf04ad6
6 changed files with 155 additions and 34 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

96
ext/gl/gstglmixer.c
View file

@ -36,6 +36,10 @@
#include "gstglmixer.h"
#if GST_GL_HAVE_PLATFORM_EGL
#include <gst-libs/gst/gl/egl/gsteglimagememory.h>
#endif
#define gst_gl_mixer_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstGLMixer, gst_gl_mixer, GST_TYPE_VIDEO_AGGREGATOR);
static gboolean gst_gl_mixer_do_bufferpool (GstGLMixer * mix,
@ -559,6 +563,98 @@ gst_gl_mixer_query_caps (GstPad * pad, GstAggregator * agg, GstQuery * query)
return TRUE;
}
static GstCaps *
gst_gl_mixer_set_caps_features (const GstCaps * caps,
const gchar * feature_name)
{
GstCaps *tmp = gst_caps_copy (caps);
guint n = gst_caps_get_size (tmp);
guint i = 0;
for (i = 0; i < n; i++) {
GstCapsFeatures *features = gst_caps_get_features (tmp, i);
if (features) {
guint n_f = gst_caps_features_get_size (features);
guint j = 0;
for (j = 0; j < n_f; j++) {
gst_caps_features_remove_id (features,
gst_caps_features_get_nth_id (features, j));
}
}
gst_caps_features_add (features, feature_name);
gst_caps_set_simple (tmp, "format", G_TYPE_STRING, "RGBA", NULL);
}
return tmp;
}
/* copies the given caps */
static GstCaps *
gst_gl_mixer_caps_remove_format_info (GstCaps * caps)
{
GstStructure *st;
GstCapsFeatures *f;
gint i, n;
GstCaps *res;
res = gst_caps_new_empty ();
n = gst_caps_get_size (caps);
for (i = 0; i < n; i++) {
st = gst_caps_get_structure (caps, i);
f = gst_caps_get_features (caps, i);
/* If this is already expressed by the existing caps
* skip this structure */
if (i > 0 && gst_caps_is_subset_structure_full (res, st, f))
continue;
st = gst_structure_copy (st);
/* Only remove format info for the cases when we can actually convert */
if (!gst_caps_features_is_any (f)
&& gst_caps_features_is_equal (f,
GST_CAPS_FEATURES_MEMORY_SYSTEM_MEMORY))
gst_structure_remove_fields (st, "format", "colorimetry", "chroma-site",
"width", "height", NULL);
gst_caps_append_structure_full (res, st, gst_caps_features_copy (f));
}
return res;
}
GstCaps *
gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps)
{
GstCaps *result = NULL;
GstCaps *glcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_GL_MEMORY);
#if GST_GL_HAVE_PLATFORM_EGL
GstCaps *eglcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_MEMORY_EGL_IMAGE);
#endif
GstCaps *uploadcaps = gst_gl_mixer_set_caps_features (caps,
GST_CAPS_FEATURE_META_GST_VIDEO_GL_TEXTURE_UPLOAD_META);
GstCaps *raw_caps =
gst_caps_from_string (GST_VIDEO_CAPS_MAKE (GST_GL_COLOR_CONVERT_FORMATS));
result = gst_caps_new_empty ();
result = gst_caps_merge (result, glcaps);
#if GST_GL_HAVE_PLATFORM_EGL
result = gst_caps_merge (result, eglcaps);
#endif
result = gst_caps_merge (result, uploadcaps);
result = gst_caps_merge (result, raw_caps);
result = gst_caps_merge (result, gst_gl_mixer_caps_remove_format_info (caps));
GST_DEBUG_OBJECT (mix, "returning %" GST_PTR_FORMAT, result);
return result;
}
static gboolean
gst_gl_mixer_src_query (GstAggregator * agg, GstQuery * query)
{

1
ext/gl/gstglmixer.h
View file

@ -92,6 +92,7 @@ struct _GstGLMixerFrameData
GType gst_gl_mixer_get_type(void);
gboolean gst_gl_mixer_process_textures (GstGLMixer * mix, GstBuffer * outbuf);
GstCaps * gst_gl_mixer_update_caps (GstGLMixer * mix, GstCaps * caps);
G_END_DECLS
#endif /* __GST_GL_MIXER_H__ */

26
ext/gl/gstglvideomixer.c
View file

@ -65,7 +65,7 @@ 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 gboolean _update_info (GstVideoAggregator * vagg, GstVideoInfo * info);
static GstCaps *_update_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);
@ -335,7 +335,7 @@ gst_gl_video_mixer_class_init (GstGLVideoMixerClass * klass)
GST_GL_MIXER_CLASS (klass)->process_textures =
gst_gl_video_mixer_process_textures;
vagg_class->update_info = _update_info;
vagg_class->update_caps = _update_caps;
agg_class->sinkpads_type = GST_TYPE_GL_VIDEO_MIXER_PAD;
}
@ -380,12 +380,17 @@ gst_gl_video_mixer_get_property (GObject * object, guint prop_id,
}
}
static gboolean
_update_info (GstVideoAggregator * vagg, GstVideoInfo * info)
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
{
GList *l;
gint best_width = -1, best_height = -1;
gboolean ret = FALSE;
GstVideoInfo info;
GstCaps *ret = NULL;
int i;
caps = gst_caps_make_writable (caps);
gst_video_info_from_caps (&info, caps);
GST_OBJECT_LOCK (vagg);
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
@ -417,10 +422,13 @@ _update_info (GstVideoAggregator * vagg, GstVideoInfo * info)
}
GST_OBJECT_UNLOCK (vagg);
if (best_width > 0 && best_height > 0) {
info->width = best_width;
info->height = best_height;
ret = TRUE;
ret = gst_gl_mixer_update_caps (GST_GL_MIXER (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);
}
return ret;

38
gst-libs/gst/video/gstvideoaggregator.c
View file

@ -559,7 +559,7 @@ gst_videoaggregator_update_src_caps (GstVideoAggregator * vagg)
}
if (best_width > 0 && best_height > 0 && best_fps > 0) {
GstCaps *caps, *peercaps;
GstCaps *caps, *peercaps, *info_caps;
GstStructure *s;
GstVideoInfo info;
@ -578,25 +578,40 @@ gst_videoaggregator_update_src_caps (GstVideoAggregator * vagg)
info.par_n = GST_VIDEO_INFO_PAR_N (&vagg->info);
info.par_d = GST_VIDEO_INFO_PAR_D (&vagg->info);
if (vagg_klass->update_info) {
if (!vagg_klass->update_info (vagg, &info)) {
info_caps = gst_video_info_to_caps (&info);
if (vagg_klass->update_caps) {
if (!(caps = vagg_klass->update_caps (vagg, info_caps))) {
gst_caps_unref (info_caps);
ret = FALSE;
goto done;
}
gst_caps_unref (info_caps);
} else {
caps = info_caps;
}
caps = gst_video_info_to_caps (&info);
peercaps = gst_pad_peer_query_caps (agg->srcpad, NULL);
if (peercaps) {
GstCaps *tmp;
int i;
s = gst_caps_get_structure (caps, 0);
gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT, "height",
GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate", GST_TYPE_FRACTION_RANGE,
0, 1, G_MAXINT, 1, NULL);
gst_structure_get (s, "width", G_TYPE_INT, &best_width, "height",
G_TYPE_INT, &best_height, NULL);
for (i = 0; i < gst_caps_get_size (caps); i++) {
s = gst_caps_get_structure (caps, i);
gst_structure_set (s, "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
"height", GST_TYPE_INT_RANGE, 1, G_MAXINT, "framerate",
GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
}
tmp = gst_caps_intersect (caps, peercaps);
GST_DEBUG_OBJECT (vagg, "intersecting %" GST_PTR_FORMAT
" with peer caps %" GST_PTR_FORMAT " result %" GST_PTR_FORMAT, caps,
peercaps, tmp);
gst_caps_unref (caps);
gst_caps_unref (peercaps);
caps = tmp;
@ -608,8 +623,8 @@ gst_videoaggregator_update_src_caps (GstVideoAggregator * vagg)
caps = gst_caps_truncate (caps);
s = gst_caps_get_structure (caps, 0);
gst_structure_fixate_field_nearest_int (s, "width", info.width);
gst_structure_fixate_field_nearest_int (s, "height", info.height);
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);
@ -618,9 +633,6 @@ gst_videoaggregator_update_src_caps (GstVideoAggregator * vagg)
gst_structure_get_fraction (s, "framerate", &info.fps_n, &info.fps_d);
}
gst_caps_unref (caps);
caps = gst_video_info_to_caps (&info);
if (gst_videoaggregator_src_setcaps (vagg, caps)) {
if (vagg_klass->negotiated_caps)
ret =

10
gst-libs/gst/video/gstvideoaggregator.h
View file

@ -73,9 +73,9 @@ struct _GstVideoAggregator
* @disable_frame_conversion: Optional.
* Allows subclasses to disable the frame colorspace
* conversion feature
* @update_info: Optional.
* Lets subclasses update the src #GstVideoInfo representing
* the src pad caps before usage.
* @update_caps: Optional.
* Lets subclasses update the #GstCaps representing
* the src pad caps before usage. Return %NULL to indicate failure.
* @aggregate_frames: Lets subclasses aggregate frames that are ready. Subclasses
* should iterate the GstElement.sinkpads and use the already
* mapped #GstVideoFrame from GstVideoAggregatorPad.aggregated_frame
@ -96,8 +96,8 @@ struct _GstVideoAggregatorClass
/*< public >*/
gboolean disable_frame_conversion;
gboolean (*update_info) (GstVideoAggregator * videoaggregator,
GstVideoInfo * info);
GstCaps * (*update_caps) (GstVideoAggregator * videoaggregator,
GstCaps * caps);
GstFlowReturn (*aggregate_frames) (GstVideoAggregator * videoaggregator,
GstBuffer * outbuffer);
GstFlowReturn (*get_output_buffer) (GstVideoAggregator * videoaggregator,

18
gst/compositor/compositor.c
View file

@ -437,12 +437,15 @@ set_functions (GstCompositor * self, GstVideoInfo * info)
return ret;
}
static gboolean
_update_info (GstVideoAggregator * vagg, GstVideoInfo * info)
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
{
GList *l;
gint best_width = -1, best_height = -1;
gboolean ret = FALSE;
GstVideoInfo info;
GstCaps *ret = NULL;
gst_video_info_from_caps (&info, caps);
GST_OBJECT_LOCK (vagg);
for (l = GST_ELEMENT (vagg)->sinkpads; l; l = l->next) {
@ -468,9 +471,10 @@ _update_info (GstVideoAggregator * vagg, GstVideoInfo * info)
GST_OBJECT_UNLOCK (vagg);
if (best_width > 0 && best_height > 0) {
gst_video_info_set_format (info, GST_VIDEO_INFO_FORMAT (info),
best_width, best_height);
ret = set_functions (GST_COMPOSITOR (vagg), info);
info.width = best_width;
info.height = best_height;
if (set_functions (GST_COMPOSITOR (vagg), &info))
ret = gst_video_info_to_caps (&info);
}
return ret;
@ -559,7 +563,7 @@ gst_compositor_class_init (GstCompositorClass * klass)
gobject_class->set_property = gst_compositor_set_property;
agg_class->sinkpads_type = GST_TYPE_COMPOSITOR_PAD;
videoaggregator_class->update_info = _update_info;
videoaggregator_class->update_caps = _update_caps;
videoaggregator_class->aggregate_frames = gst_compositor_aggregate_frames;
g_object_class_install_property (gobject_class, PROP_BACKGROUND,