#include <framework/mlt_frame.h>
// ffmpeg Header files
-#include <ffmpeg/avformat.h>
+#include <avformat.h>
// System header files
#include <stdlib.h>
#include <pthread.h>
#include <math.h>
+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.
*/
// 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 )
{
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( );
}
}
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( );
}
}
/** Open the file.
-
- NOTE: We need to have a valid [PAL or NTSC] frame rate before we can determine the
- number of frames in the file. However, this is at odds with the way things work - the
- constructor needs to provide in/out points before the user of the producer is able
- to specify properties :-/. However, the PAL/NTSC distinction applies to all producers
- and while we currently accept whatever the producer provides, this will not work in
- the more general case. Plans are afoot... and this one will work without modification
- (in theory anyway ;-)).
*/
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, ':' );
+
+ // 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 );
-// fprintf( stderr, "AVFORMAT: open %d %s\n", error, file );
+ 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 )
// Find default audio and video streams
find_default_streams( context, &audio_index, &video_index );
+ // Check if we're seekable (something funny about mpeg here :-/)
+ if ( strstr( file, ".mpg" ) == NULL && strstr( file, ".mpeg" ) == NULL )
+ mlt_properties_set_int( properties, "seekable", av_seek_frame( context, -1, context->start_time ) >= 0 );
+ else
+ mlt_properties_set_int( properties, "seekable", 1 );
+
// 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 )
{
}
// Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
+ avformat_unlock( );
return error;
}
int ignore = 0;
// Current time calcs
- double current_time = 0;
+ double current_time = mlt_properties_get_double( properties, "current_time" );
// We may want to use the source fps if available
double source_fps = mlt_properties_get_double( properties, "source_fps" );
mlt_properties_set_int( frame_properties, "height", *height );
// Lock the mutex now
- pthread_mutex_lock( &avformat_mutex );
+ avformat_lock( );
// Construct an AVFrame for YUV422 conversion
if ( output == NULL )
{
- int size = avpicture_get_size( PIX_FMT_YUV422, *width, *height );
- void *frame_release = NULL;
- void *buffer_release = NULL;
- size += *width * 2;
- uint8_t *buf = mlt_pool_allocate( size, &buffer_release );
- output = mlt_pool_allocate( sizeof( AVPicture ), &frame_release );
- memset( output, 0, sizeof( AVPicture ) );
+ int size = avpicture_get_size( PIX_FMT_YUV422, *width, *height + 1 );
+ uint8_t *buf = mlt_pool_alloc( size );
+ output = mlt_pool_alloc( sizeof( AVPicture ) );
avpicture_fill( output, buf, PIX_FMT_YUV422, *width, *height );
- mlt_properties_set_data( properties, "video_output_frame_release", frame_release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( properties, "video_output_buffer_release", buffer_release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( properties, "video_output_frame", output, 0, NULL, NULL );
- mlt_properties_set_data( properties, "video_output_buffer", buf, 0, NULL, NULL );
+ 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 );
}
// Seek if necessary
else
{
// Set to the real timecode
- av_seek_frame( context, -1, real_timecode * 1000000.0 );
+ av_seek_frame( context, -1, context->start_time + real_timecode * 1000000.0 );
// Remove the cached info relating to the previous position
- mlt_properties_set_double( properties, "current_time", 0 );
+ mlt_properties_set_double( properties, "current_time", real_timecode );
mlt_properties_set_data( properties, "current_image", NULL, 0, NULL, NULL );
}
}
uint8_t *image = mlt_properties_get_data( properties, "current_image", &size );
// Duplicate it
- void *release = NULL;
- *buffer = mlt_pool_allocate( size, &release );
+ *buffer = mlt_pool_alloc( size );
memcpy( *buffer, image, size );
// Set this on the frame properties
- mlt_properties_set_data( frame_properties, "image_release", release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( frame_properties, "image", *buffer, size, NULL, NULL );
+ mlt_properties_set_data( frame_properties, "image", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
}
else
{
// We only deal with video from the selected video_index
if ( ret >= 0 && pkt.stream_index == index && pkt.size > 0 )
{
- current_time = ( double )pkt.pts / 1000000.0;
-
// Decode the image
- // Wouldn't it be great if I could use this...
- //if ( (float)pkt.pts / 1000000.0 >= real_timecode )
ret = avcodec_decode_video( codec_context, &frame, &got_picture, pkt.data, pkt.size );
if ( got_picture )
{
+ if ( pkt.pts != AV_NOPTS_VALUE && pkt.pts != 0 )
+ 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;
}
else if ( current_time >= real_timecode )
{
+ //current_time = real_timecode;
ignore = 0;
}
- else if ( got_picture && ignore -- )
+ else if ( ignore -- )
{
got_picture = 0;
}
+ mlt_properties_set_int( properties, "top_field_first", frame.top_field_first );
}
}
{
// Get current image and size
int size = 0;
- void *release = NULL;
uint8_t *image = mlt_properties_get_data( properties, "current_image", &size );
if ( image == NULL || size != *width * *height * 2 )
{
- void *current_image_release = NULL;
size = *width * ( *height + 1 ) * 2;
- image = mlt_pool_allocate( size, ¤t_image_release );
- mlt_properties_set_data( properties, "current_image_release", current_image_release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( properties, "current_image", image, size, NULL, NULL );
+ image = mlt_pool_alloc( size );
+ mlt_properties_set_data( properties, "current_image", image, size, ( mlt_destructor )mlt_pool_release, NULL );
}
- *buffer = mlt_pool_allocate( size, &release );
- img_convert( output, PIX_FMT_YUV422, (AVPicture *)&frame, codec_context->pix_fmt, *width, *height );
- memcpy( image, output->data[ 0 ], size );
- memcpy( *buffer, output->data[ 0 ], size );
- mlt_properties_set_data( frame_properties, "image_release", release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( frame_properties, "image", *buffer, size, NULL, NULL );
+ *buffer = mlt_pool_alloc( size );
+
+ // EXPERIMENTAL IMAGE NORMALISATIONS
+ if ( codec_context->pix_fmt == PIX_FMT_YUV420P )
+ {
+ register int i, j;
+ register int half = *width >> 1;
+ register uint8_t *Y = ( ( AVPicture * )&frame )->data[ 0 ];
+ register uint8_t *U = ( ( AVPicture * )&frame )->data[ 1 ];
+ register uint8_t *V = ( ( AVPicture * )&frame )->data[ 2 ];
+ register uint8_t *d = *buffer;
+ register uint8_t *y, *u, *v;
+
+ i = *height >> 1;
+ while ( i -- )
+ {
+ y = Y;
+ u = U;
+ v = V;
+ j = half;
+ while ( j -- )
+ {
+ *d ++ = *y ++;
+ *d ++ = *u ++;
+ *d ++ = *y ++;
+ *d ++ = *v ++;
+ }
+
+ Y += ( ( AVPicture * )&frame )->linesize[ 0 ];
+ y = Y;
+ u = U;
+ v = V;
+ j = half;
+ while ( j -- )
+ {
+ *d ++ = *y ++;
+ *d ++ = *u ++;
+ *d ++ = *y ++;
+ *d ++ = *v ++;
+ }
+
+ Y += ( ( AVPicture * )&frame )->linesize[ 0 ];
+ U += ( ( AVPicture * )&frame )->linesize[ 1 ];
+ V += ( ( AVPicture * )&frame )->linesize[ 2 ];
+ }
+ }
+ else
+ {
+ img_convert( output, PIX_FMT_YUV422, (AVPicture *)&frame, codec_context->pix_fmt, *width, *height );
+ memcpy( *buffer, output->data[ 0 ], size );
+ }
+
+ memcpy( image, *buffer, size );
+ mlt_properties_set_data( frame_properties, "image", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
if ( current_time == 0 && source_fps != 0 )
{
}
}
}
+
+ // 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 );
+ avformat_unlock( );
return 0;
}
mlt_properties frame_properties = mlt_frame_properties( frame );
// Lock the mutex now
- pthread_mutex_lock( &avformat_mutex );
+ avformat_lock( );
if ( context != NULL && index != -1 )
{
// If we don't have a codec and we can't initialise it, we can't do much more...
if ( codec != NULL && avcodec_open( codec_context, codec ) >= 0 )
{
- double aspect_ratio = 0;
- double source_fps = 0;
-
- // Set aspect ratio
- if ( codec_context->sample_aspect_ratio.num == 0)
- aspect_ratio = 0;
- else
- aspect_ratio = av_q2d( codec_context->sample_aspect_ratio ) * codec_context->width / codec_context->height;
-
- 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\n", aspect_ratio );
-
- // Determine the fps
- source_fps = ( double )codec_context->frame_rate / 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 );
-
// Now store the codec with its destructor
mlt_properties_set_data( properties, "video_codec", codec_context, 0, producer_codec_close, NULL );
-
- // Set to the real timecode
- av_seek_frame( context, -1, 0 );
}
else
{
// No codec, no show...
if ( codec != NULL )
{
+ double aspect_ratio = 1;
+ double source_fps = 0;
+
+ // Set aspect ratio
+ if ( codec_context->sample_aspect_ratio.num > 0 )
+ aspect_ratio = av_q2d( codec_context->sample_aspect_ratio );
+
+ mlt_properties_set_double( properties, "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 == 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 );
}
}
// Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
+ avformat_unlock( );
}
/** Get the audio from a frame.
// 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" );
// Flag for paused (silence)
int paused = 0;
- int locked = 0;
// Lock the mutex now
- pthread_mutex_lock( &avformat_mutex );
+ avformat_lock( );
// 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 )
{
- // Audio buffer release pointer
- void *buffer_release = NULL;
-
// Allocate the audio buffer
- audio_buffer = mlt_pool_allocate( AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof( int16_t ), &buffer_release );
+ audio_buffer = mlt_pool_alloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof( int16_t ) );
// And store it on properties for reuse
- mlt_properties_set_data( properties, "audio_buffer_release", buffer_release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( properties, "audio_buffer", audio_buffer, 0, NULL, NULL );
+ mlt_properties_set_data( properties, "audio_buffer", audio_buffer, 0, ( mlt_destructor )mlt_pool_release, NULL );
}
// Seek if necessary
else
{
// Set to the real timecode
- av_seek_frame( context, -1, real_timecode * 1000000.0 );
+ if ( !seekable || av_seek_frame( context, -1, context->start_time + real_timecode * 1000000.0 ) != 0 )
+ paused = 1;
// Clear the usage in the audio buffer
audio_used = 0;
-
- locked = 1;
}
}
{
int ret = 0;
int got_audio = 0;
- void *temp_release = NULL;
- int16_t *temp = mlt_pool_allocate( sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE, &temp_release );
+ int16_t *temp = mlt_pool_alloc( sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE );
memset( &pkt, 0, sizeof( pkt ) );
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 )
mlt_properties_set_double( properties, "discrepancy", discrepancy );
}
- if ( discrepancy * current_pts <= ( real_timecode - 0.02 ) )
+ if ( seekable && ( !ignore && discrepancy * current_pts <= ( real_timecode - 0.02 ) ) )
ignore = 1;
}
av_free_packet( &pkt );
}
+ *buffer = mlt_pool_alloc( *samples * *channels * sizeof( int16_t ) );
+ mlt_properties_set_data( frame_properties, "audio", *buffer, 0, ( mlt_destructor )mlt_pool_release, NULL );
+
// Now handle the audio if we have enough
if ( audio_used >= *samples )
{
- void *buffer_release = NULL;
- *buffer = mlt_pool_allocate( *samples * *channels * sizeof( int16_t ), &buffer_release );
memcpy( *buffer, audio_buffer, *samples * *channels * sizeof( int16_t ) );
audio_used -= *samples;
memmove( audio_buffer, &audio_buffer[ *samples * *channels ], audio_used * *channels * sizeof( int16_t ) );
- mlt_properties_set_data( frame_properties, "audio_release", buffer_release, 0, ( mlt_destructor )mlt_pool_release, NULL );
- mlt_properties_set_data( frame_properties, "audio", *buffer, 0, NULL, NULL );
}
else
{
- frame->get_audio = NULL;
- mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples );
- audio_used = 0;
+ memset( *buffer, 0, *samples * *channels * sizeof( int16_t ) );
}
// Store the number of audio samples still available
mlt_properties_set_int( properties, "audio_used", audio_used );
// Release the temporary audio
- mlt_pool_release( temp_release );
+ mlt_pool_release( temp );
}
else
{
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 );
+ // Regardless of speed (other than paused), we expect to get the next frame
+ if ( !paused )
+ mlt_properties_set_position( properties, "audio_expected", position + 1 );
// Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
+ avformat_unlock( );
return 0;
}
int index = mlt_properties_get_int( properties, "audio_index" );
// Lock the mutex now
- pthread_mutex_lock( &avformat_mutex );
+ avformat_lock( );
// Deal with audio context
if ( context != NULL && index != -1 )
}
// Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
+ avformat_unlock( );
}
/** Our get frame implementation.
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 );
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