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glvideomixer: implement par handling

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We were previously ignoring it completely
This commit is contained in:
Matthew Waters 2015-05-13 17:11:55 +10:00
parent 21a6cfcc18
commit 725c1147bc
1 changed files with 50 additions and 16 deletions
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66
ext/gl/gstglvideomixer.c
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@ -621,9 +621,49 @@ 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)
{
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix);
GstVideoAggregatorPad *vagg_pad = GST_VIDEO_AGGREGATOR_PAD (mix_pad);
gint pad_width, pad_height;
gint dar_n, dar_d;
pad_width =
mix_pad->width <=
0 ? GST_VIDEO_INFO_WIDTH (&vagg_pad->info) : mix_pad->width;
pad_height =
mix_pad->height <=
0 ? GST_VIDEO_INFO_HEIGHT (&vagg_pad->info) : mix_pad->height;
gst_util_fraction_multiply (GST_VIDEO_INFO_PAR_N (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg_pad->info),
GST_VIDEO_INFO_PAR_D (&vagg->info), GST_VIDEO_INFO_PAR_N (&vagg->info),
&dar_n, &dar_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));
if (pad_height % dar_n == 0) {
pad_height = gst_util_uint64_scale_int (pad_width, dar_n, dar_d);
} else if (pad_width % dar_d == 0) {
pad_width = gst_util_uint64_scale_int (pad_height, dar_d, dar_n);
} else {
pad_height = gst_util_uint64_scale_int (pad_width, dar_n, dar_d);
}
if (width)
*width = pad_width;
if (height)
*height = pad_height;
}
static GstCaps *
_update_caps (GstVideoAggregator * vagg, GstCaps * caps)
{
GstGLVideoMixer *mix = GST_GL_VIDEO_MIXER (vagg);
GList *l;
gint best_width = -1, best_height = -1;
GstVideoInfo info;
@ -640,15 +680,7 @@ _update_caps (GstVideoAggregator * vagg, GstCaps * caps)
gint this_width, this_height;
gint width, height;
if (mixer_pad->width > 0)
width = mixer_pad->width;
else
width = GST_VIDEO_INFO_WIDTH (&vaggpad->info);
if (mixer_pad->height > 0)
height = mixer_pad->height;
else
height = GST_VIDEO_INFO_HEIGHT (&vaggpad->info);
_mixer_pad_get_output_size (mix, mixer_pad, &width, &height);
if (width == 0 || height == 0)
continue;
@ -844,6 +876,7 @@ static void
gst_gl_video_mixer_callback (gpointer stuff)
{
GstGLVideoMixer *video_mixer = GST_GL_VIDEO_MIXER (stuff);
GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (stuff);
GstGLMixer *mixer = GST_GL_MIXER (video_mixer);
GstGLFuncs *gl = GST_GL_BASE_MIXER (mixer)->context->gl_vtable;
@ -858,8 +891,8 @@ gst_gl_video_mixer_callback (gpointer stuff)
guint count = 0;
out_width = GST_VIDEO_INFO_WIDTH (&GST_VIDEO_AGGREGATOR (stuff)->info);
out_height = GST_VIDEO_INFO_HEIGHT (&GST_VIDEO_AGGREGATOR (stuff)->info);
out_width = GST_VIDEO_INFO_WIDTH (&vagg->info);
out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info);
gst_gl_context_clear_shader (GST_GL_BASE_MIXER (mixer)->context);
gl->BindTexture (GL_TEXTURE_2D, 0);
@ -891,6 +924,7 @@ gst_gl_video_mixer_callback (gpointer stuff)
while (count < video_mixer->input_frames->len) {
GstGLMixerFrameData *frame;
GstGLVideoMixerPad *pad;
GstVideoInfo *v_info;
guint in_tex;
guint in_width, in_height;
@ -910,8 +944,9 @@ gst_gl_video_mixer_callback (gpointer stuff)
continue;
}
pad = (GstGLVideoMixerPad *) frame->pad;
in_width = GST_VIDEO_INFO_WIDTH (&GST_VIDEO_AGGREGATOR_PAD (pad)->info);
in_height = GST_VIDEO_INFO_HEIGHT (&GST_VIDEO_AGGREGATOR_PAD (pad)->info);
v_info = &GST_VIDEO_AGGREGATOR_PAD (pad)->info;
in_width = GST_VIDEO_INFO_WIDTH (v_info);
in_height = GST_VIDEO_INFO_HEIGHT (v_info);
if (!frame->texture || in_width <= 0 || in_height <= 0
|| pad->alpha == 0.0f) {
@ -924,11 +959,10 @@ gst_gl_video_mixer_callback (gpointer stuff)
in_tex = frame->texture;
if (pad->geometry_change || !pad->vertex_buffer) {
guint pad_width, pad_height;
gint pad_width, pad_height;
gfloat w, h;
pad_width = pad->width <= 0 ? in_width : pad->width;
pad_height = pad->height <= 0 ? in_height : pad->height;
_mixer_pad_get_output_size (video_mixer, pad, &pad_width, &pad_height);
w = ((gfloat) pad_width / (gfloat) out_width);
h = ((gfloat) pad_height / (gfloat) out_height);