X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fmodules%2Favformat%2Fproducer_avformat.c;h=ea262d8fbd60a9377ae26ca4ff5a60cde39f1b6e;hb=b4db352cab396eb5179e2deaf58bb05dcdfb0c69;hp=c8fe492d6e9f1230d7f97d45432dfa61542c4802;hpb=49098d3d331a1b5ee630472773c9b8ef416a0642;p=melted diff --git a/src/modules/avformat/producer_avformat.c b/src/modules/avformat/producer_avformat.c index c8fe492..ea262d8 100644 --- a/src/modules/avformat/producer_avformat.c +++ b/src/modules/avformat/producer_avformat.c @@ -25,7 +25,7 @@ #include // ffmpeg Header files -#include +#include // System header files #include @@ -33,14 +33,13 @@ #include #include +void avformat_lock( ); +void avformat_unlock( ); + // Forward references. static int producer_open( mlt_producer this, char *file ); static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index ); -// A static flag used to determine if avformat has been initialised -static int avformat_initialised = 0; -static pthread_mutex_t avformat_mutex; - /** Constructor for libavformat. */ @@ -63,20 +62,9 @@ mlt_producer producer_avformat_init( char *file ) // Set the resource property (required for all producers) mlt_properties_set( properties, "resource", file ); - // TEST: audio sync tweaking - mlt_properties_set_double( properties, "discrepancy", 1 ); - // Register our get_frame implementation this->get_frame = producer_get_frame; - // Initialise avformat if necessary - if ( avformat_initialised == 0 ) - { - pthread_mutex_init( &avformat_mutex, NULL ); - avformat_initialised = 1; - av_register_all( ); - } - // Open the file if ( producer_open( this, file ) != 0 ) { @@ -128,13 +116,13 @@ static void producer_file_close( void *context ) if ( context != NULL ) { // Lock the mutex now - pthread_mutex_lock( &avformat_mutex ); + avformat_lock( ); // Close the file av_close_input_file( context ); // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); + avformat_unlock( ); } } @@ -146,13 +134,13 @@ static void producer_codec_close( void *codec ) if ( codec != NULL ) { // Lock the mutex now - pthread_mutex_lock( &avformat_mutex ); + avformat_lock( ); // Close the file avcodec_close( codec ); // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); + avformat_unlock( ); } } @@ -174,11 +162,90 @@ static int producer_open( mlt_producer this, char *file ) double fps = mlt_properties_get_double( properties, "fps" ); // Lock the mutex now - pthread_mutex_lock( &avformat_mutex ); + avformat_lock( ); + + // 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; + + // 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; + } + else if ( !strcmp( name, "av" ) ) + av = atoi( value ); + } + 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 ) @@ -205,12 +272,19 @@ static int producer_open( mlt_producer this, char *file ) // Find default audio and video streams find_default_streams( context, &audio_index, &video_index ); + if ( context->start_time != AV_NOPTS_VALUE ) + mlt_properties_set_double( properties, "start_time", context->start_time ); + + // Check if we're seekable (something funny about mpeg here :-/) + if ( strcmp( file, "pipe:" ) ) + mlt_properties_set_int( properties, "seekable", av_seek_frame( context, -1, mlt_properties_get_double( properties, "start_time" ) ) >= 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 ) + if ( av == 0 && strcmp( file, "pipe:" ) && audio_index != -1 && video_index != -1 ) { // We'll use the open one as our video_context mlt_properties_set_data( properties, "video_context", context, 0, producer_file_close, NULL ); @@ -222,7 +296,7 @@ static int producer_open( mlt_producer this, char *file ) // Audio context mlt_properties_set_data( properties, "audio_context", context, 0, producer_file_close, NULL ); } - else if ( video_index != -1 ) + else if ( av != 2 && video_index != -1 ) { // We only have a video context mlt_properties_set_data( properties, "video_context", context, 0, producer_file_close, NULL ); @@ -241,7 +315,7 @@ static int producer_open( mlt_producer this, char *file ) } // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); + avformat_unlock( ); return error; } @@ -314,6 +388,9 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form // We may want to use the source fps if available double source_fps = mlt_properties_get_double( properties, "source_fps" ); + // Get the seekable status + int seekable = mlt_properties_get_int( properties, "seekable" ); + // Set the result arguments that we know here (only *buffer is now required) *format = mlt_image_yuv422; *width = codec_context->width; @@ -323,17 +400,12 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form mlt_properties_set_int( frame_properties, "width", *width ); mlt_properties_set_int( frame_properties, "height", *height ); - // Lock the mutex now - pthread_mutex_lock( &avformat_mutex ); - // Construct an AVFrame for YUV422 conversion if ( output == NULL ) { - int size = avpicture_get_size( PIX_FMT_YUV422, *width, *height ); - size += *width * 2; + int size = avpicture_get_size( PIX_FMT_YUV422, *width, *height + 1 ); uint8_t *buf = mlt_pool_alloc( size ); output = mlt_pool_alloc( sizeof( AVPicture ) ); - //memset( output, 0, sizeof( AVPicture ) ); avpicture_fill( output, buf, PIX_FMT_YUV422, *width, *height ); mlt_properties_set_data( properties, "video_output_frame", output, 0, ( mlt_destructor )mlt_pool_release, NULL ); mlt_properties_set_data( properties, "video_output_buffer", buf, 0, ( mlt_destructor )mlt_pool_release, NULL ); @@ -347,15 +419,15 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form // We're paused - use last image paused = 1; } - else if ( position > expected && ( position - expected ) < 250 ) + else if ( !seekable && position > expected && ( position - expected ) < 250 ) { // Fast forward - seeking is inefficient for small distances - just ignore following frames ignore = position - expected; } - else + else if ( codec_context->gop_size == 0 || ( position < expected || position - expected >= 12 ) ) { // Set to the real timecode - av_seek_frame( context, -1, real_timecode * 1000000.0 ); + av_seek_frame( context, -1, mlt_properties_get_double( properties, "start_time" ) + real_timecode * 1000000.0 ); // Remove the cached info relating to the previous position mlt_properties_set_double( properties, "current_time", real_timecode ); @@ -365,7 +437,8 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form // Duplicate the last image if necessary if ( mlt_properties_get_data( properties, "current_image", NULL ) != NULL && - ( paused || mlt_properties_get_double( properties, "current_time" ) >= real_timecode ) ) + ( paused || mlt_properties_get_double( properties, "current_time" ) >= real_timecode ) && + strcmp( mlt_properties_get( properties, "resource" ), "pipe:" ) ) { // Get current image and size int size = 0; @@ -400,13 +473,13 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form if ( got_picture ) { - if ( pkt.pts != AV_NOPTS_VALUE && pkt.pts != 0 ) + if ( pkt.pts != AV_NOPTS_VALUE ) current_time = ( double )pkt.pts / 1000000.0; else current_time = real_timecode; // Handle ignore - if ( current_time < real_timecode ) + if ( ( int )( current_time * 100 ) < ( int )( real_timecode * 100 ) - 7 ) { ignore = 0; got_picture = 0; @@ -420,6 +493,7 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form { got_picture = 0; } + mlt_properties_set_int( properties, "top_field_first", frame.top_field_first ); } } @@ -508,13 +582,14 @@ static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_form } } } + + // Set the field order property for this frame + mlt_properties_set_int( frame_properties, "top_field_first", + mlt_properties_get_int( properties, "top_field_first" ) ); // Regardless of speed, we expect to get the next frame (cos we ain't too bright) mlt_properties_set_position( properties, "video_expected", position + 1 ); - // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); - return 0; } @@ -535,9 +610,6 @@ static void producer_set_up_video( mlt_producer this, mlt_frame frame ) // Get the frame properties mlt_properties frame_properties = mlt_frame_properties( frame ); - // Lock the mutex now - pthread_mutex_lock( &avformat_mutex ); - if ( context != NULL && index != -1 ) { // Get the video stream @@ -571,32 +643,36 @@ static void producer_set_up_video( mlt_producer this, mlt_frame frame ) // No codec, no show... if ( codec != NULL ) { - double aspect_ratio = 0; double source_fps = 0; - // Set aspect ratio - if ( codec_context->sample_aspect_ratio.num == 0 ) - aspect_ratio = 0; + // XXX: We won't know the real aspect ratio until an image is decoded + // but we do need it now (to satisfy filter_resize) - take a guess based + // on pal/ntsc + if ( codec_context->sample_aspect_ratio.num > 0 ) + { + mlt_properties_set_double( properties, "aspect_ratio", av_q2d( codec_context->sample_aspect_ratio ) ); + } else - aspect_ratio = av_q2d( codec_context->sample_aspect_ratio ) * codec_context->width / codec_context->height; + { + int is_pal = mlt_properties_get_double( properties, "fps" ) == 25.0; + mlt_properties_set_double( properties, "aspect_ratio", is_pal ? 128.0/117.0 : 72.0/79.0 ); + } - // XXX: This assumes square pixels! - if (aspect_ratio <= 0.0) - aspect_ratio = ( double )codec_context->width / ( double )codec_context->height; - - mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio ); - //fprintf( stderr, "AVFORMAT: sample aspect %f computed display aspect %f\n", av_q2d( codec_context->sample_aspect_ratio ), aspect_ratio ); + //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 ) mlt_properties_set_double( properties, "source_fps", source_fps ); + + // Set the width and height + mlt_properties_set_int( frame_properties, "width", codec_context->width ); + mlt_properties_set_int( frame_properties, "height", codec_context->height ); mlt_frame_push_get_image( frame, producer_get_image ); mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL ); - } else { @@ -607,9 +683,6 @@ static void producer_set_up_video( mlt_producer this, mlt_frame frame ) { mlt_properties_set_int( frame_properties, "test_image", 1 ); } - - // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); } /** Get the audio from a frame. @@ -635,6 +708,9 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form // Get the audio_index int index = mlt_properties_get_int( properties, "audio_index" ); + // Get the seekable status + int seekable = mlt_properties_get_int( properties, "seekable" ); + // Obtain the expected frame numer mlt_position expected = mlt_properties_get_position( properties, "audio_expected" ); @@ -664,13 +740,9 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form // Flag for paused (silence) int paused = 0; - int locked = 0; - - // Lock the mutex now - 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 ); @@ -678,6 +750,11 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form // 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 ) @@ -697,20 +774,19 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form // We're paused - silence required paused = 1; } - else if ( position > expected && ( position - expected ) < 250 ) + else if ( !seekable && position > expected && ( position - expected ) < 250 ) { // Fast forward - seeking is inefficient for small distances - just ignore following frames ignore = position - expected; } - else + else if ( position < expected || position - expected >= 12 ) { // Set to the real timecode - av_seek_frame( context, -1, real_timecode * 1000000.0 ); + if ( av_seek_frame( context, -1, mlt_properties_get_double( properties, "start_time" ) + real_timecode * 1000000.0 ) != 0 ) + paused = 1; // Clear the usage in the audio buffer audio_used = 0; - - locked = 1; } } @@ -739,7 +815,7 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form 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 @@ -756,9 +832,15 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form 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 ) @@ -771,25 +853,7 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form // If we're behind, ignore this packet float current_pts = (float)pkt.pts / 1000000.0; - double discrepancy = mlt_properties_get_double( properties, "discrepancy" ); - if ( current_pts != 0 && real_timecode != 0 ) - { - if ( discrepancy != 1 ) - discrepancy = ( discrepancy + ( real_timecode / current_pts ) ) / 2; - else - discrepancy = real_timecode / current_pts; - if ( discrepancy > 0.9 && discrepancy < 1.1 ) - discrepancy = 1.0; - else - discrepancy = floor( discrepancy + 0.5 ); - - if ( discrepancy == 0 ) - discrepancy = 1.0; - - mlt_properties_set_double( properties, "discrepancy", discrepancy ); - } - - if ( !ignore && discrepancy * current_pts <= ( real_timecode - 0.02 ) ) + if ( seekable && ( !ignore && current_pts <= ( real_timecode - 0.02 ) ) ) ignore = 1; } @@ -825,11 +889,9 @@ static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_form mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples ); } - // Regardless of speed, we expect to get the next frame (cos we ain't too bright) - mlt_properties_set_position( properties, "audio_expected", position + 1 ); - - // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); + // Regardless of speed (other than paused), we expect to get the next frame + if ( !paused ) + mlt_properties_set_position( properties, "audio_expected", position + 1 ); return 0; } @@ -848,9 +910,6 @@ static void producer_set_up_audio( mlt_producer this, mlt_frame frame ) // Get the audio_index int index = mlt_properties_get_int( properties, "audio_index" ); - // Lock the mutex now - pthread_mutex_lock( &avformat_mutex ); - // Deal with audio context if ( context != NULL && index != -1 ) { @@ -893,9 +952,6 @@ static void producer_set_up_audio( mlt_producer this, mlt_frame frame ) mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL ); } } - - // Unlock the mutex now - pthread_mutex_unlock( &avformat_mutex ); } /** Our get frame implementation. @@ -910,7 +966,7 @@ static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int index mlt_frame_set_position( *frame, mlt_producer_position( this ) ); // Set the position of this producer - mlt_properties_set_position( mlt_frame_properties( *frame ), "avformat_position", mlt_producer_get_in( this ) + mlt_producer_position( this ) ); + mlt_properties_set_position( mlt_frame_properties( *frame ), "avformat_position", mlt_producer_position( this ) ); // Set up the video producer_set_up_video( this, *frame );