/* GStreamer Matroska muxer/demuxer * (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net> * (C) 2006 Tim-Philipp Müller <tim centricular net> * * matroska-ids.c: matroska track context utility functions * * 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "matroska-ids.h" gboolean gst_matroska_track_init_video_context (GstMatroskaTrackContext ** p_context) { GstMatroskaTrackVideoContext *video_context; g_assert (p_context != NULL && *p_context != NULL); /* already set up? (track info might come before track type) */ if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_VIDEO) { GST_LOG ("video context already set up"); return TRUE; } /* it better not have been set up as some other track type ... */ if ((*p_context)->type != 0) { g_return_val_if_reached (FALSE); } video_context = g_renew (GstMatroskaTrackVideoContext, *p_context, 1); *p_context = (GstMatroskaTrackContext *) video_context; /* defaults */ (*p_context)->type = GST_MATROSKA_TRACK_TYPE_VIDEO; video_context->display_width = 0; video_context->display_height = 0; video_context->pixel_width = 0; video_context->pixel_height = 0; video_context->asr_mode = 0; video_context->fourcc = 0; video_context->default_fps = 0.0; return TRUE; } gboolean gst_matroska_track_init_audio_context (GstMatroskaTrackContext ** p_context) { GstMatroskaTrackAudioContext *audio_context; g_assert (p_context != NULL && *p_context != NULL); /* already set up? (track info might come before track type) */ if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_AUDIO) return TRUE; /* it better not have been set up as some other track type ... */ if ((*p_context)->type != 0) { g_return_val_if_reached (FALSE); } audio_context = g_renew (GstMatroskaTrackAudioContext, *p_context, 1); *p_context = (GstMatroskaTrackContext *) audio_context; /* defaults */ (*p_context)->type = GST_MATROSKA_TRACK_TYPE_AUDIO; audio_context->channels = 1; audio_context->samplerate = 8000; return TRUE; } gboolean gst_matroska_track_init_subtitle_context (GstMatroskaTrackContext ** p_context) { GstMatroskaTrackSubtitleContext *subtitle_context; g_assert (p_context != NULL && *p_context != NULL); /* already set up? (track info might come before track type) */ if ((*p_context)->type == GST_MATROSKA_TRACK_TYPE_SUBTITLE) return TRUE; /* it better not have been set up as some other track type ... */ if ((*p_context)->type != 0) { g_return_val_if_reached (FALSE); } subtitle_context = g_renew (GstMatroskaTrackSubtitleContext, *p_context, 1); *p_context = (GstMatroskaTrackContext *) subtitle_context; (*p_context)->type = GST_MATROSKA_TRACK_TYPE_SUBTITLE; subtitle_context->invalid_utf8 = FALSE; return TRUE; } void gst_matroska_register_tags (void) { /* TODO: register other custom tags */ }