// Forward references.
static int list_components( char* file );
-static int producer_open( producer_avformat self, mlt_profile profile, char *file );
+static int producer_open( producer_avformat self, mlt_profile profile, const char *URL );
static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
static void producer_avformat_close( producer_avformat );
static void producer_close( mlt_producer parent );
// Register our get_frame implementation
producer->get_frame = producer_get_frame;
-
+
if ( strcmp( service, "avformat-novalidate" ) )
{
// Open the file
av_close_input_file( self->video_format );
self->video_format = NULL;
avformat_unlock();
-
+
// Default the user-selectable indices from the auto-detected indices
mlt_properties_set_int( properties, "audio_index", self->audio_index );
mlt_properties_set_int( properties, "video_index", self->video_index );
/** Find the default streams.
*/
-static mlt_properties find_default_streams( mlt_properties meta_media, AVFormatContext *context, int *audio_index, int *video_index )
+static mlt_properties find_default_streams( producer_avformat self )
{
int i;
char key[200];
AVMetadataTag *tag = NULL;
+ AVFormatContext *context = self->video_format;
+ mlt_properties meta_media = MLT_PRODUCER_PROPERTIES( self->parent );
+
+ // Default to the first audio and video streams found
+ self->audio_index = -1;
+ self->video_index = -1;
mlt_properties_set_int( meta_media, "meta.media.nb_streams", context->nb_streams );
switch( codec_context->codec_type )
{
case CODEC_TYPE_VIDEO:
- if ( *video_index < 0 )
- *video_index = i;
+ // Use first video stream
+ if ( self->video_index < 0 )
+ self->video_index = i;
mlt_properties_set( meta_media, key, "video" );
snprintf( key, sizeof(key), "meta.media.%d.stream.frame_rate", i );
#if LIBAVFORMAT_VERSION_INT >= ((52<<16)+(42<<8)+0)
#endif
break;
case CODEC_TYPE_AUDIO:
- if ( *audio_index < 0 )
- *audio_index = i;
+ // Use first audio stream
+ if ( self->audio_index < 0 )
+ self->audio_index = i;
mlt_properties_set( meta_media, key, "audio" );
#if LIBAVCODEC_VERSION_MAJOR > 52
snprintf( key, sizeof(key), "meta.media.%d.codec.sample_fmt", i );
return aspect_ratio;
}
-/** Open the file.
-*/
-
-static int producer_open( producer_avformat self, mlt_profile profile, char *file )
+static char* parse_url( mlt_profile profile, const char* URL, AVInputFormat **format, AVFormatParameters **parameters )
{
- // Return an error code (0 == no error)
- int error = 0;
-
- // Context for avformat
- AVFormatContext *context = NULL;
-
- // Get the properties
- mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
-
- // We will treat everything with the producer fps
- double fps = mlt_profile_fps( profile );
+ if ( !URL ) return NULL;
- // Lock the service
- pthread_mutex_init( &self->audio_mutex, NULL );
- pthread_mutex_init( &self->video_mutex, NULL );
- pthread_mutex_lock( &self->audio_mutex );
- pthread_mutex_lock( &self->video_mutex );
-
- // If "MRL", then create AVInputFormat
- AVInputFormat *format = NULL;
- AVFormatParameters *params = NULL;
- char *standard = NULL;
- char *mrl = strchr( file, ':' );
-
- // AV option (0 = both, 1 = video, 2 = audio)
- int av = 0;
+ char *result = NULL;
+ char *protocol = strdup( URL );
+ char *url = strchr( protocol, ':' );
// Only if there is not a protocol specification that avformat can handle
#if LIBAVFORMAT_VERSION_MAJOR > 52
- if ( mrl && avio_check( file, 0 ) < 0 )
+ if ( url && avio_check( URL, 0 ) < 0 )
#else
- if ( mrl && !url_exist( file ) )
+ if ( url && !url_exist( URL ) )
#endif
{
- // 'file' becomes format abbreviation
- mrl[0] = 0;
+ // Truncate protocol string
+ url[0] = 0;
// Lookup the format
- format = av_find_input_format( file );
+ *format = av_find_input_format( protocol );
// Eat the format designator
- file = ++mrl;
+ result = ++url;
- if ( format )
+ if ( *format )
{
// Allocate params
- params = calloc( sizeof( AVFormatParameters ), 1 );
+ AVFormatParameters *params = *parameters = calloc( 1, sizeof( AVFormatParameters ) );
- // These are required by video4linux (defaults)
- params->width = 640;
- params->height = 480;
- params->time_base= (AVRational){1,25};
+ // These are required by video4linux2 (defaults)
+ params->width = profile->width;
+ params->height = profile->height;
+ params->time_base= (AVRational){ profile->frame_rate_den, profile->frame_rate_num };
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 )
+ // Parse out params
+ url = strchr( url, '?' );
+ while ( url )
{
- value[0] = 0;
- value++;
- char *t = strchr( value, '&' );
- if ( t )
- t[0] = 0;
- if ( !strcmp( name, "frame_rate" ) )
- params->time_base.den = atoi( value );
- else if ( !strcmp( name, "frame_rate_base" ) )
- params->time_base.num = atoi( value );
- else if ( !strcmp( name, "sample_rate" ) )
- params->sample_rate = atoi( value );
- else if ( !strcmp( name, "channel" ) )
- params->channel = atoi( value );
- else if ( !strcmp( name, "channels" ) )
- params->channels = atoi( value );
+ url[0] = 0;
+ char *name = strdup( ++url );
+ 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->time_base.den = atoi( value );
+ else if ( !strcmp( name, "frame_rate_base" ) )
+ params->time_base.num = atoi( value );
+ else if ( !strcmp( name, "sample_rate" ) )
+ params->sample_rate = atoi( value );
+ else if ( !strcmp( name, "channel" ) )
+ params->channel = atoi( value );
+ else if ( !strcmp( name, "channels" ) )
+ params->channels = atoi( value );
#if (LIBAVUTIL_VERSION_INT > ((50<<16)+(7<<8)+0))
- else if ( !strcmp( name, "pix_fmt" ) )
- params->pix_fmt = av_get_pix_fmt( value );
+ else if ( !strcmp( name, "pix_fmt" ) )
+ params->pix_fmt = av_get_pix_fmt( value );
#endif
- 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;
+ else if ( !strcmp( name, "width" ) )
+ params->width = atoi( value );
+ else if ( !strcmp( name, "height" ) )
+ params->height = atoi( value );
+ else if ( !strcmp( name, "standard" ) )
+ params->standard = strdup( value );
}
- else if ( !strcmp( name, "av" ) )
- av = atoi( value );
+ free( name );
+ url = strchr( url, '&' );
}
- free( name );
- mrl = strchr( mrl, '&' );
}
}
+ free( protocol );
+ return result ? strdup( result ) : strdup( URL );
+}
- // Now attempt to open the file
- error = av_open_input_file( &context, file, format, 0, params ) < 0;
-
- // Cleanup AVFormatParameters
- free( standard );
- free( params );
+static int get_basic_info( producer_avformat self, mlt_profile profile, const char *filename )
+{
+ int error = 0;
- // If successful, then try to get additional info
- if ( !error )
- {
- // Get the stream info
- error = av_find_stream_info( context ) < 0;
+ // Get the properties
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( self->parent );
- // Continue if no error
- if ( !error )
- {
- // We will default to the first audio and video streams found
- int audio_index = -1;
- int video_index = -1;
+ AVFormatContext *format = self->video_format;
- // Find default audio and video streams
- find_default_streams( properties, context, &audio_index, &video_index );
+ // We will treat everything with the producer fps.
+ // TODO: make this more flexible.
+ double fps = mlt_profile_fps( profile );
- // Now set properties where we can (use default unknowns if required)
- if ( context->duration != AV_NOPTS_VALUE )
- {
- // This isn't going to be accurate for all formats
- mlt_position frames = ( mlt_position )( ( ( double )context->duration / ( double )AV_TIME_BASE ) * fps );
- mlt_properties_set_position( properties, "out", frames - 1 );
- mlt_properties_set_position( properties, "length", frames );
- }
+ // Get the duration
+ if ( !mlt_properties_get_int( properties, "_length_computed" ) )
+ {
+ // The _length_computed flag prevents overwriting explicity set length/out/eof properties
+ // when producer_open is called after initial call when restoring or reseting the producer.
+ if ( format->duration != AV_NOPTS_VALUE )
+ {
+ // This isn't going to be accurate for all formats
+ mlt_position frames = ( mlt_position )( ( ( double )format->duration / ( double )AV_TIME_BASE ) * fps );
+ mlt_properties_set_position( properties, "out", frames - 1 );
+ mlt_properties_set_position( properties, "length", frames );
+ mlt_properties_set_int( properties, "_length_computed", 1 );
+ }
+ else
+ {
+ // Set live sources to run forever
+ mlt_properties_set_position( properties, "length", INT_MAX );
+ mlt_properties_set_position( properties, "out", INT_MAX - 1 );
+ mlt_properties_set( properties, "eof", "loop" );
+ mlt_properties_set_int( properties, "_length_computed", 1 );
+ }
+ }
- if ( context->start_time != AV_NOPTS_VALUE )
- self->start_time = context->start_time;
+ if ( format->start_time != AV_NOPTS_VALUE )
+ self->start_time = format->start_time;
- // Check if we're seekable
- // avdevices are typically AVFMT_NOFILE and not seekable
- self->seekable = !format || !( format->flags & AVFMT_NOFILE );
- if ( context->pb )
- {
- // protocols can indicate if they support seeking
+ // Check if we're seekable
+ // avdevices are typically AVFMT_NOFILE and not seekable
+ self->seekable = !format->iformat || !( format->iformat->flags & AVFMT_NOFILE );
+ if ( format->pb )
+ {
+ // protocols can indicate if they support seeking
#if LIBAVFORMAT_VERSION_MAJOR > 52
- self->seekable = context->pb->seekable;
+ self->seekable = context->pb->seekable;
#else
- URLContext *uc = url_fileno( context->pb );
- if ( uc )
- self->seekable = !uc->is_streamed;
+ URLContext *uc = url_fileno( format->pb );
+ if ( uc )
+ self->seekable = !uc->is_streamed;
#endif
- }
- if ( self->seekable )
- {
- self->seekable = av_seek_frame( context, -1, self->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
- mlt_properties_set_int( properties, "seekable", self->seekable );
- self->dummy_context = context;
- av_open_input_file( &context, file, NULL, 0, NULL );
- av_find_stream_info( context );
- }
+ }
+ if ( self->seekable )
+ {
+ // Do a more rigourous test of seekable on a disposable context
+ self->seekable = av_seek_frame( format, -1, self->start_time, AVSEEK_FLAG_BACKWARD ) >= 0;
+ mlt_properties_set_int( properties, "seekable", self->seekable );
+ self->dummy_context = format;
+ av_open_input_file( &self->video_format, filename, NULL, 0, NULL );
+ format = self->video_format;
+ av_find_stream_info( format );
+ }
- // Store selected audio and video indexes on properties
- self->audio_index = audio_index;
- self->video_index = video_index;
- self->first_pts = -1;
- self->last_position = POSITION_INITIAL;
+ // Fetch the width, height and aspect ratio
+ if ( self->video_index != -1 )
+ {
+ AVCodecContext *codec_context = format->streams[ self->video_index ]->codec;
+ mlt_properties_set_int( properties, "width", codec_context->width );
+ mlt_properties_set_int( properties, "height", codec_context->height );
- // Fetch the width, height and aspect ratio
- if ( video_index != -1 )
+ if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
+ {
+ // Fetch the first frame of DV so we can read it directly
+ AVPacket pkt;
+ int ret = 0;
+ while ( ret >= 0 )
{
- AVCodecContext *codec_context = context->streams[ video_index ]->codec;
- mlt_properties_set_int( properties, "width", codec_context->width );
- mlt_properties_set_int( properties, "height", codec_context->height );
-
- if ( codec_context->codec_id == CODEC_ID_DVVIDEO )
- {
- // Fetch the first frame of DV so we can read it directly
- AVPacket pkt;
- int ret = 0;
- while ( ret >= 0 )
- {
- ret = av_read_frame( context, &pkt );
- if ( ret >= 0 && pkt.stream_index == video_index && pkt.size > 0 )
- {
- get_aspect_ratio( properties, context->streams[ video_index ], codec_context, &pkt );
- break;
- }
- }
- }
- else
+ ret = av_read_frame( format, &pkt );
+ if ( ret >= 0 && pkt.stream_index == self->video_index && pkt.size > 0 )
{
- get_aspect_ratio( properties, context->streams[ video_index ], codec_context, NULL );
+ get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, &pkt );
+ break;
}
+ }
+ }
+ else
+ {
+ get_aspect_ratio( properties, format->streams[ self->video_index ], codec_context, NULL );
+ }
+
#ifdef SWSCALE
- struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
- codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
- if ( context )
- sws_freeContext( context );
- else
- error = 1;
+ // Verify that we can convert this to YUV 4:2:2
+ // TODO: we can now also return RGB and RGBA and quite possibly more in the future.
+ struct SwsContext *context = sws_getContext( codec_context->width, codec_context->height, codec_context->pix_fmt,
+ codec_context->width, codec_context->height, PIX_FMT_YUYV422, SWS_BILINEAR, NULL, NULL, NULL);
+ if ( context )
+ sws_freeContext( context );
+ else
+ error = 1;
#endif
- }
+ }
+ return error;
+}
- // We're going to cheat here - for a/v files, we will have two contexts (reasoning will be clear later)
- if ( av == 0 && audio_index != -1 && video_index != -1 )
- {
- // We'll use the open one as our video_format
- self->video_format = context;
+/** Open the file.
+*/
- // And open again for our audio context
- av_open_input_file( &context, file, NULL, 0, NULL );
- av_find_stream_info( context );
+static int producer_open( producer_avformat self, mlt_profile profile, const char *URL )
+{
+ // Return an error code (0 == no error)
+ int error = 0;
- // Audio context
- self->audio_format = context;
- }
- else if ( av != 2 && video_index != -1 )
+ // Lock the service
+ pthread_mutex_init( &self->audio_mutex, NULL );
+ pthread_mutex_init( &self->video_mutex, NULL );
+ pthread_mutex_lock( &self->audio_mutex );
+ pthread_mutex_lock( &self->video_mutex );
+
+ // Parse URL
+ AVInputFormat *format = NULL;
+ AVFormatParameters *params = NULL;
+ char *filename = parse_url( profile, URL, &format, ¶ms );
+
+ // Now attempt to open the file
+ error = av_open_input_file( &self->video_format, filename, format, 0, params ) < 0;
+
+ // Cleanup AVFormatParameters
+ if ( params )
+ {
+ if ( params->standard )
+ free( (void*) params->standard );
+ free( params );
+ }
+
+ // If successful, then try to get additional info
+ if ( !error )
+ {
+ // Get the stream info
+ error = av_find_stream_info( self->video_format ) < 0;
+
+ // Continue if no error
+ if ( !error )
+ {
+ // Find default audio and video streams
+ find_default_streams( self );
+ error = get_basic_info( self, profile, filename );
+
+ // Initialize position info
+ self->first_pts = -1;
+ self->last_position = POSITION_INITIAL;
+
+ // We're going to cheat here - for seekable A/V files, we will have separate contexts
+ // to support independent seeking of audio from video.
+ // TODO: Is this really necessary?
+ if ( self->audio_index != -1 && self->video_index != -1 )
{
- // We only have a video context
- self->video_format = context;
+ // And open again for our audio context
+ av_open_input_file( &self->audio_format, filename, NULL, 0, NULL );
+ av_find_stream_info( self->audio_format );
}
- else if ( audio_index != -1 )
+ else if ( self->audio_index != -1 )
{
// We only have an audio context
- self->audio_format = context;
+ self->audio_format = self->video_format;
+ self->video_format = NULL;
}
- else
+ else if ( self->video_index == -1 )
{
// Something has gone wrong
error = -1;
}
}
}
+ if ( filename )
+ free( filename );
// Unlock the service
pthread_mutex_unlock( &self->audio_mutex );
projects / mlt / commitdiff