static int avformat_initialised = 0;
static pthread_mutex_t avformat_mutex;
+#if 0
void *av_malloc( unsigned int size )
{
return mlt_pool_alloc( size );
{
return mlt_pool_release( ptr );
}
+#endif
/** Constructor for libavformat.
*/
// Lock the mutex now
pthread_mutex_lock( &avformat_mutex );
+
+ // If "MRL", then create AVInputFormat
+ AVInputFormat *format = NULL;
+ AVFormatParameters *params = NULL;
+ char *standard = NULL;
+ char *mrl = strchr( file, ':' );
+
+ // Only if there is not a protocol specification that avformat can handle
+ if ( mrl && !url_exist( file ) )
+ {
+ // 'file' becomes format abbreviation
+ mrl[0] = 0;
+
+ // Lookup the format
+ format = av_find_input_format( file );
+
+ // Eat the format designator
+ file = ++mrl;
+
+ if ( format )
+ {
+ // Allocate params
+ params = calloc( sizeof( AVFormatParameters ), 1 );
+
+ // These are required by video4linux (defaults)
+ params->width = 640;
+ params->height = 480;
+ params->frame_rate = 25;
+ params->frame_rate_base = 1;
+ params->device = file;
+ params->channels = 2;
+ params->sample_rate = 48000;
+ }
+
+ // Parse out params
+ mrl = strchr( file, '?' );
+ while ( mrl )
+ {
+ mrl[0] = 0;
+ char *name = strdup( ++mrl );
+ char *value = strchr( name, ':' );
+ if ( value )
+ {
+ value[0] = 0;
+ value++;
+ char *t = strchr( value, '&' );
+ if ( t )
+ t[0] = 0;
+ if ( !strcmp( name, "frame_rate" ) )
+ params->frame_rate = atoi( value );
+ else if ( !strcmp( name, "frame_rate_base" ) )
+ params->frame_rate_base = atoi( value );
+ else if ( !strcmp( name, "sample_rate" ) )
+ params->sample_rate = atoi( value );
+ else if ( !strcmp( name, "channels" ) )
+ params->channels = atoi( value );
+ else if ( !strcmp( name, "width" ) )
+ params->width = atoi( value );
+ else if ( !strcmp( name, "height" ) )
+ params->height = atoi( value );
+ else if ( !strcmp( name, "standard" ) )
+ {
+ standard = strdup( value );
+ params->standard = standard;
+ }
+ }
+ free( name );
+ mrl = strchr( mrl, '&' );
+ }
+ }
// Now attempt to open the file
- error = av_open_input_file( &context, file, NULL, 0, NULL );
+ error = av_open_input_file( &context, file, format, 0, params );
error = error < 0;
+
+ // Cleanup AVFormatParameters
+ free( standard );
+ free( params );
// If successful, then try to get additional info
if ( error == 0 )
// Store selected audio and video indexes on properties
mlt_properties_set_int( properties, "audio_index", audio_index );
mlt_properties_set_int( properties, "video_index", video_index );
-
+
// We're going to cheat here - for a/v files, we will have two contexts (reasoning will be clear later)
if ( audio_index != -1 && video_index != -1 )
{
//fprintf( stderr, "AVFORMAT: sample aspect %f %dx%d\n", av_q2d( codec_context->sample_aspect_ratio ), codec_context->width, codec_context->height );
// Determine the fps
- source_fps = ( double )codec_context->frame_rate / codec_context->frame_rate_base;
+ source_fps = ( double )codec_context->frame_rate / ( codec_context->frame_rate_base == 0 ? 1 : codec_context->frame_rate_base );
// We'll use fps if it's available
if ( source_fps > 0 && source_fps < 30 )
pthread_mutex_lock( &avformat_mutex );
// Check for resample and create if necessary
- if ( resample == NULL )
+ if ( resample == NULL && codec_context->channels <= 2 )
{
// Create the resampler
resample = audio_resample_init( *channels, codec_context->channels, *frequency, codec_context->sample_rate );
// And store it on properties
mlt_properties_set_data( properties, "audio_resample", resample, 0, ( mlt_destructor )audio_resample_close, NULL );
}
+ else if ( resample == NULL )
+ {
+ *channels = codec_context->channels;
+ *frequency = codec_context->sample_rate;
+ }
// Check for audio buffer and create if necessary
if ( audio_buffer == NULL )
uint8_t *ptr = pkt.data;
int data_size;
- // We only deal with video from the selected video_index
+ // We only deal with audio from the selected audio_index
while ( ptr != NULL && ret >= 0 && pkt.stream_index == index && len > 0 )
{
// Decode the audio
if ( data_size > 0 )
{
- int size_out = audio_resample( resample, &audio_buffer[ audio_used * *channels ], temp, data_size / ( codec_context->channels * sizeof( int16_t ) ) );
-
- audio_used += size_out;
+ if ( resample != NULL )
+ {
+ audio_used += audio_resample( resample, &audio_buffer[ audio_used * *channels ], temp, data_size / ( codec_context->channels * sizeof( int16_t ) ) );
+ }
+ else
+ {
+ memcpy( &audio_buffer[ audio_used * *channels ], temp, data_size );
+ audio_used += data_size / ( codec_context->channels * sizeof( int16_t ) );
+ }
// Handle ignore
while ( ignore && audio_used > *samples )