int libavsmash_video_get_summaries
(
libavsmash_video_decode_handler_t *vdhp
)
{
return get_summaries( vdhp->root, vdhp->track_id, &vdhp->config );
}
int libavsmash_audio_get_summaries
(
libavsmash_audio_decode_handler_t *adhp
)
{
return get_summaries( adhp->root, adhp->track_id, &adhp->config );
}
void LSMASHVideoSource::get_video_track( const char *source, uint32_t track_number, int threads, IScriptEnvironment *env )
{
uint32_t number_of_tracks = open_file( source, env );
if( track_number && track_number > number_of_tracks )
env->ThrowError( "LSMASHVideoSource: the number of tracks equals %I32u.", number_of_tracks );
/* L-SMASH */
uint32_t i;
lsmash_media_parameters_t media_param;
if( track_number == 0 )
{
/* Get the first video track. */
for( i = 1; i <= number_of_tracks; i++ )
{
vdh.track_ID = lsmash_get_track_ID( vdh.root, i );
if( vdh.track_ID == 0 )
env->ThrowError( "LSMASHVideoSource: failed to find video track." );
lsmash_initialize_media_parameters( &media_param );
if( lsmash_get_media_parameters( vdh.root, vdh.track_ID, &media_param ) )
env->ThrowError( "LSMASHVideoSource: failed to get media parameters." );
if( media_param.handler_type == ISOM_MEDIA_HANDLER_TYPE_VIDEO_TRACK )
break;
}
if( i > number_of_tracks )
env->ThrowError( "LSMASHVideoSource: failed to find video track." );
}
else
{
/* Get the desired video track. */
vdh.track_ID = lsmash_get_track_ID( vdh.root, track_number );
if( vdh.track_ID == 0 )
env->ThrowError( "LSMASHVideoSource: failed to find video track." );
lsmash_initialize_media_parameters( &media_param );
if( lsmash_get_media_parameters( vdh.root, vdh.track_ID, &media_param ) )
env->ThrowError( "LSMASHVideoSource: failed to get media parameters." );
if( media_param.handler_type != ISOM_MEDIA_HANDLER_TYPE_VIDEO_TRACK )
env->ThrowError( "LSMASHVideoSource: the track you specified is not a video track." );
}
if( lsmash_construct_timeline( vdh.root, vdh.track_ID ) )
env->ThrowError( "LSMASHVideoSource: failed to get construct timeline." );
if( get_summaries( vdh.root, vdh.track_ID, &vdh.config ) )
env->ThrowError( "LSMASHVideoSource: failed to get summaries." );
vi.num_frames = lsmash_get_sample_count_in_media_timeline( vdh.root, vdh.track_ID );
setup_timestamp_info( &vdh, &vi, media_param.timescale, env );
/* libavformat */
for( i = 0; i < format_ctx->nb_streams && format_ctx->streams[i]->codec->codec_type != AVMEDIA_TYPE_VIDEO; i++ );
if( i == format_ctx->nb_streams )
env->ThrowError( "LSMASHVideoSource: failed to find stream by libavformat." );
/* libavcodec */
AVStream *stream = format_ctx->streams[i];
AVCodecContext *ctx = stream->codec;
vdh.config.ctx = ctx;
AVCodec *codec = avcodec_find_decoder( ctx->codec_id );
if( !codec )
env->ThrowError( "LSMASHVideoSource: failed to find %s decoder.", codec->name );
ctx->thread_count = threads;
if( avcodec_open2( ctx, codec, NULL ) < 0 )
env->ThrowError( "LSMASHVideoSource: failed to avcodec_open2." );
}
void LSMASHAudioSource::get_audio_track( const char *source, uint32_t track_number, bool skip_priming, IScriptEnvironment *env )
{
uint32_t number_of_tracks = open_file( source, env );
if( track_number && track_number > number_of_tracks )
env->ThrowError( "LSMASHAudioSource: the number of tracks equals %I32u.", number_of_tracks );
/* L-SMASH */
uint32_t i;
lsmash_media_parameters_t media_param;
if( track_number == 0 )
{
/* Get the first audio track. */
for( i = 1; i <= number_of_tracks; i++ )
{
adh.track_ID = lsmash_get_track_ID( adh.root, i );
if( adh.track_ID == 0 )
env->ThrowError( "LSMASHAudioSource: failed to find audio track." );
lsmash_initialize_media_parameters( &media_param );
if( lsmash_get_media_parameters( adh.root, adh.track_ID, &media_param ) )
env->ThrowError( "LSMASHAudioSource: failed to get media parameters." );
if( media_param.handler_type == ISOM_MEDIA_HANDLER_TYPE_AUDIO_TRACK )
break;
}
if( i > number_of_tracks )
env->ThrowError( "LSMASHAudioSource: failed to find audio track." );
}
else
{
/* Get the desired audio track. */
adh.track_ID = lsmash_get_track_ID( adh.root, track_number );
if( adh.track_ID == 0 )
env->ThrowError( "LSMASHAudioSource: failed to find audio track." );
lsmash_initialize_media_parameters( &media_param );
if( lsmash_get_media_parameters( adh.root, adh.track_ID, &media_param ) )
env->ThrowError( "LSMASHAudioSource: failed to get media parameters." );
if( media_param.handler_type != ISOM_MEDIA_HANDLER_TYPE_AUDIO_TRACK )
env->ThrowError( "LSMASHAudioSource: the track you specified is not an audio track." );
}
if( lsmash_construct_timeline( adh.root, adh.track_ID ) )
env->ThrowError( "LSMASHAudioSource: failed to get construct timeline." );
if( get_summaries( adh.root, adh.track_ID, &adh.config ) )
env->ThrowError( "LSMASHAudioSource: failed to get summaries." );
adh.frame_count = lsmash_get_sample_count_in_media_timeline( adh.root, adh.track_ID );
vi.num_audio_samples = lsmash_get_media_duration_from_media_timeline( adh.root, adh.track_ID );
if( skip_priming )
{
uint32_t itunes_metadata_count = lsmash_count_itunes_metadata( adh.root );
for( i = 1; i <= itunes_metadata_count; i++ )
{
lsmash_itunes_metadata_t metadata;
if( lsmash_get_itunes_metadata( adh.root, i, &metadata ) < 0 )
continue;
if( metadata.item != ITUNES_METADATA_ITEM_CUSTOM
|| (metadata.type != ITUNES_METADATA_TYPE_STRING && metadata.type != ITUNES_METADATA_TYPE_BINARY)
|| !metadata.meaning || !metadata.name
|| memcmp( "com.apple.iTunes", metadata.meaning, strlen( metadata.meaning ) )
|| memcmp( "iTunSMPB", metadata.name, strlen( metadata.name ) ) )
{
lsmash_cleanup_itunes_metadata( &metadata );
continue;
}
char *value = NULL;
if( metadata.type == ITUNES_METADATA_TYPE_STRING )
{
int length = strlen( metadata.value.string );
if( length >= 116 )
value = duplicate_as_string( metadata.value.string, length );
}
else /* metadata.type == ITUNES_METADATA_TYPE_BINARY */
{
if( metadata.value.binary.size >= 116 )
value = duplicate_as_string( metadata.value.binary.data, metadata.value.binary.size );
}
lsmash_cleanup_itunes_metadata( &metadata );
if( !value )
continue;
uint32_t dummy[9];
uint32_t priming_samples;
uint32_t padding;
uint64_t duration;
if( 12 != sscanf( value, " %I32x %I32x %I32x %I64x %I32x %I32x %I32x %I32x %I32x %I32x %I32x %I32x",
&dummy[0], &priming_samples, &padding, &duration, &dummy[1], &dummy[2],
&dummy[3], &dummy[4], &dummy[5], &dummy[6], &dummy[7], &dummy[8] ) )
{
delete [] value;
continue;
}
delete [] value;
adh.implicit_preroll = 1;
aoh.skip_decoded_samples = priming_samples;
vi.num_audio_samples = duration + priming_samples;
break;
}
if( aoh.skip_decoded_samples == 0 )
{
uint32_t ctd_shift;
if( lsmash_get_composition_to_decode_shift_from_media_timeline( adh.root, adh.track_ID, &ctd_shift ) )
env->ThrowError( "LSMASHAudioSource: failed to get the timeline shift." );
aoh.skip_decoded_samples = ctd_shift + get_start_time( adh.root, adh.track_ID );
}
}
/* libavformat */
for( i = 0; i < format_ctx->nb_streams && format_ctx->streams[i]->codec->codec_type != AVMEDIA_TYPE_AUDIO; i++ );
if( i == format_ctx->nb_streams )
env->ThrowError( "LSMASHAudioSource: failed to find stream by libavformat." );
/* libavcodec */
AVStream *stream = format_ctx->streams[i];
AVCodecContext *ctx = stream->codec;
adh.config.ctx = ctx;
AVCodec *codec = avcodec_find_decoder( ctx->codec_id );
if( !codec )
env->ThrowError( "LSMASHAudioSource: failed to find %s decoder.", codec->name );
ctx->thread_count = 0;
if( avcodec_open2( ctx, codec, NULL ) < 0 )
env->ThrowError( "LSMASHAudioSource: failed to avcodec_open2." );
}
