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80926a5596
Before, vp8dec had no option but to decode all frames even if some/all of them would be late. With this change, performance when keyframes are frequent is helped a great deal. On my Thinkpad X60s, decoding a 20 s 1080p sunflower encode with keyframes every 10 frames went from taking 42 s with 5 frames shown to 21 s with 15 frames shown (still slow enough to count by hand). When keyframes are more sparse, you will still be able to catch up eventually, but the results won't be as noticable.
118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
/* GStreamer Matroska muxer/demuxer
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* (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* (C) 2006 Tim-Philipp Müller <tim centricular net>
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*
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* matroska-ids.c: matroska track context utility functions
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "matroska-ids.h"
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gboolean
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gst_matroska_track_init_video_context (GstMatroskaTrackContext ** p_context)
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{
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GstMatroskaTrackVideoContext *video_context;
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g_assert (p_context != NULL && *p_context != NULL);
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/* already set up? (track info might come before track type) */
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if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_VIDEO) {
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GST_LOG ("video context already set up");
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return TRUE;
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}
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/* it better not have been set up as some other track type ... */
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if ((*p_context)->type != 0) {
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g_return_val_if_reached (FALSE);
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}
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video_context = g_renew (GstMatroskaTrackVideoContext, *p_context, 1);
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*p_context = (GstMatroskaTrackContext *) video_context;
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/* defaults */
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(*p_context)->type = GST_MATROSKA_TRACK_TYPE_VIDEO;
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video_context->display_width = 0;
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video_context->display_height = 0;
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video_context->pixel_width = 0;
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video_context->pixel_height = 0;
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video_context->asr_mode = 0;
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video_context->fourcc = 0;
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video_context->default_fps = 0.0;
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video_context->earliest_time = GST_CLOCK_TIME_NONE;
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return TRUE;
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}
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gboolean
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gst_matroska_track_init_audio_context (GstMatroskaTrackContext ** p_context)
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{
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GstMatroskaTrackAudioContext *audio_context;
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g_assert (p_context != NULL && *p_context != NULL);
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/* already set up? (track info might come before track type) */
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if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_AUDIO)
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return TRUE;
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/* it better not have been set up as some other track type ... */
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if ((*p_context)->type != 0) {
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g_return_val_if_reached (FALSE);
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}
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audio_context = g_renew (GstMatroskaTrackAudioContext, *p_context, 1);
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*p_context = (GstMatroskaTrackContext *) audio_context;
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/* defaults */
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(*p_context)->type = GST_MATROSKA_TRACK_TYPE_AUDIO;
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audio_context->channels = 1;
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audio_context->samplerate = 8000;
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return TRUE;
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}
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gboolean
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gst_matroska_track_init_subtitle_context (GstMatroskaTrackContext ** p_context)
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{
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GstMatroskaTrackSubtitleContext *subtitle_context;
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g_assert (p_context != NULL && *p_context != NULL);
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/* already set up? (track info might come before track type) */
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if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE)
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return TRUE;
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/* it better not have been set up as some other track type ... */
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if ((*p_context)->type != 0) {
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g_return_val_if_reached (FALSE);
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}
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subtitle_context = g_renew (GstMatroskaTrackSubtitleContext, *p_context, 1);
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*p_context = (GstMatroskaTrackContext *) subtitle_context;
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(*p_context)->type = GST_MATROSKA_TRACK_TYPE_SUBTITLE;
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subtitle_context->invalid_utf8 = FALSE;
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return TRUE;
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}
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void
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gst_matroska_register_tags (void)
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{
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/* TODO: register other custom tags */
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}
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