#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;
-
-void *av_malloc( unsigned int size )
-{
- return mlt_pool_alloc( size );
-}
-
-void *av_realloc( void *ptr, unsigned int size )
-{
- return mlt_pool_realloc( ptr, size );
-}
-
-void av_free( void *ptr )
-{
- return mlt_pool_release( ptr );
-}
-
/** Constructor for libavformat.
*/
if ( mlt_producer_init( this, NULL ) == 0 )
{
// Get the properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// 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 )
- {
- avformat_initialised = 1;
- pthread_mutex_init( &avformat_mutex, NULL );
- av_register_all( );
- }
-
// Open the file
if ( producer_open( this, file ) != 0 )
{
for( i = 0; i < context->nb_streams; i++ )
{
// Get the codec context
- AVCodecContext *codec_context = &context->streams[ i ]->codec;
+ AVCodecContext *codec_context = context->streams[ i ]->codec;
+
+ if ( avcodec_find_decoder( codec_context->codec_id ) == NULL )
+ continue;
// Determine the type and obtain the first index of each type
switch( codec_context->codec_type )
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( );
}
}
AVFormatContext *context = NULL;
// Get the properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// We will treat everything with the producer fps
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;
+ // Setting lowest log level
+ av_log_set_level( -1 );
+
// Only if there is not a protocol specification that avformat can handle
if ( mrl && !url_exist( file ) )
{
// These are required by video4linux (defaults)
params->width = 640;
params->height = 480;
- params->frame_rate = 25;
- params->frame_rate_base = 1;
+ params->time_base= (AVRational){1,25};
params->device = file;
params->channels = 2;
params->sample_rate = 48000;
{
mrl[0] = 0;
char *name = strdup( ++mrl );
- char *value = strchr( name, '=' );
+ char *value = strchr( name, ':' );
if ( value )
{
value[0] = 0;
if ( t )
t[0] = 0;
if ( !strcmp( name, "frame_rate" ) )
- params->frame_rate = atoi( value );
+ params->time_base.den = atoi( value );
else if ( !strcmp( name, "frame_rate_base" ) )
- params->frame_rate_base = atoi( value );
+ params->time_base.num = atoi( value );
else if ( !strcmp( name, "sample_rate" ) )
params->sample_rate = atoi( value );
else if ( !strcmp( name, "channels" ) )
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, format, 0, params );
- error = error < 0;
+ error = av_open_input_file( &context, file, format, 0, params ) < 0;
// Cleanup AVFormatParameters
free( standard );
// We will default to the first audio and video streams found
int audio_index = -1;
int video_index = -1;
+ int av_bypass = 0;
// Now set properties where we can (use default unknowns if required)
if ( context->duration != AV_NOPTS_VALUE )
// 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:" ) && strncmp( file, "http://", 6 ) )
+ mlt_properties_set_int( properties, "seekable", av_seek_frame( context, -1, mlt_properties_get_double( properties, "_start_time" ), AVSEEK_FLAG_BACKWARD ) >= 0 );
+ else
+ av_bypass = 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 );
+ mlt_properties_set_int( properties, "_last_position", -1 );
+ // Fetch the width, height and aspect ratio
+ if ( video_index != -1 )
+ {
+ 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 );
+ mlt_properties_set_double( properties, "aspect_ratio", av_q2d( codec_context->sample_aspect_ratio ) );
+ }
+
// 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 && !av_bypass && 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 );
+ av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
// And open again for our audio context
av_open_input_file( &context, file, NULL, 0, NULL );
// 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 );
+ av_seek_frame( context, -1, 0, AVSEEK_FLAG_BACKWARD );
}
else if ( audio_index != -1 )
{
// Something has gone wrong
error = -1;
}
+
+ mlt_properties_set_int( properties, "av_bypass", av_bypass );
}
}
// Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
+ avformat_unlock( );
return error;
}
static double producer_time_of_frame( mlt_producer this, mlt_position position )
{
// Get the properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// Obtain the fps
double fps = mlt_properties_get_double( properties, "fps" );
return ( double )position / fps;
}
+static inline void convert_image( AVFrame *frame, uint8_t *buffer, int pix_fmt, mlt_image_format format, int width, int height )
+{
+ if ( format == mlt_image_yuv420p )
+ {
+ AVPicture pict;
+ pict.data[0] = buffer;
+ pict.data[1] = buffer + width * height;
+ pict.data[2] = buffer + ( 3 * width * height ) / 2;
+ pict.linesize[0] = width;
+ pict.linesize[1] = width >> 1;
+ pict.linesize[2] = width >> 1;
+ img_convert( &pict, PIX_FMT_YUV420P, (AVPicture *)frame, pix_fmt, width, height );
+ }
+ else if ( format == mlt_image_rgb24 )
+ {
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_RGB24, width, height );
+ img_convert( &output, PIX_FMT_RGB24, (AVPicture *)frame, pix_fmt, width, height );
+ }
+ else
+ {
+ AVPicture output;
+ avpicture_fill( &output, buffer, PIX_FMT_YUV422, width, height );
+ img_convert( &output, PIX_FMT_YUV422, (AVPicture *)frame, pix_fmt, width, height );
+ }
+}
+
/** Get an image from a frame.
*/
static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
{
// Get the properties from the frame
- mlt_properties frame_properties = mlt_frame_properties( frame );
+ mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
// Obtain the frame number of this frame
mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
mlt_producer this = mlt_properties_get_data( frame_properties, "avformat_producer", NULL );
// Get the producer properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// Fetch the video_context
AVFormatContext *context = mlt_properties_get_data( properties, "video_context", NULL );
int index = mlt_properties_get_int( properties, "video_index" );
// Obtain the expected frame numer
- mlt_position expected = mlt_properties_get_position( properties, "video_expected" );
+ mlt_position expected = mlt_properties_get_position( properties, "_video_expected" );
// Calculate the real time code
- double real_timecode = producer_time_of_frame( this, position ) + mlt_properties_get_double( properties, "_v_pts_offset" );
+ double real_timecode = producer_time_of_frame( this, position );
// Get the video stream
AVStream *stream = context->streams[ index ];
// Get codec context
- AVCodecContext *codec_context = &stream->codec;
+ AVCodecContext *codec_context = stream->codec;
// Packet
AVPacket pkt;
// Get the conversion frame
- AVPicture *output = mlt_properties_get_data( properties, "video_output_frame", NULL );
+ AVFrame *av_frame = mlt_properties_get_data( properties, "av_frame", NULL );
// Special case pause handling flag
int paused = 0;
int ignore = 0;
// Current time calcs
- double current_time = mlt_properties_get_double( properties, "current_time" );
+ int current_position = mlt_properties_get_double( properties, "_current_position" );
// We may want to use the source fps if available
double source_fps = mlt_properties_get_double( properties, "source_fps" );
+ double fps = mlt_properties_get_double( properties, "fps" );
+
+ // This is the physical frame position in the source
+ int req_position = ( int )( position / fps * source_fps );
+
+ // Get the seekable status
+ int seekable = mlt_properties_get_int( properties, "seekable" );
+
+ // Generate the size in bytes
+ int size = 0;
+
+ // Hopefully provide better support for streams...
+ int av_bypass = mlt_properties_get_int( properties, "av_bypass" );
+
+ // Determines if we have to decode all frames in a sequence
+ int must_decode = 1;
// Set the result arguments that we know here (only *buffer is now required)
- *format = mlt_image_yuv422;
*width = codec_context->width;
*height = codec_context->height;
+ switch ( *format )
+ {
+ case mlt_image_yuv420p:
+ size = *width * 3 * ( *height + 1 ) / 2;
+ break;
+ case mlt_image_rgb24:
+ size = *width * ( *height + 1 ) * 3;
+ break;
+ default:
+ *format = mlt_image_yuv422;
+ size = *width * ( *height + 1 ) * 2;
+ break;
+ }
+
// Set this on the frame properties
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 the output image
+ *buffer = mlt_pool_alloc( size );
- // Construct an AVFrame for YUV422 conversion
- if ( output == NULL )
- {
- int size = avpicture_get_size( PIX_FMT_YUV422, *width, *height );
- size += *width * 2;
- 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 );
- }
+ // Temporary hack to improve intra frame only
+ must_decode = strcmp( codec_context->codec->name, "mjpeg" ) &&
+ strcmp( codec_context->codec->name, "rawvideo" ) &&
+ strcmp( codec_context->codec->name, "dvvideo" );
// Seek if necessary
if ( position != expected )
{
- if ( position + 1 == expected )
+ if ( av_frame != NULL && position + 1 == expected )
{
// 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;
+ ignore = ( int )( ( position - expected ) / fps * source_fps );
}
- else
+ else if ( seekable && ( position < expected || position - expected >= 12 ) )
{
- // Set to the real timecode
- av_seek_frame( context, -1, real_timecode * 1000000.0 );
+ // Calculate the timestamp for the requested frame
+ int64_t timestamp = ( int64_t )( ( double )req_position / source_fps * AV_TIME_BASE );
+ if ( ( uint64_t )context->start_time != AV_NOPTS_VALUE )
+ timestamp += context->start_time;
+ if ( must_decode )
+ timestamp -= AV_TIME_BASE;
+ if ( timestamp < 0 )
+ timestamp = 0;
+
+ // Set to the timestamp
+ av_seek_frame( context, -1, timestamp, AVSEEK_FLAG_BACKWARD );
// Remove the cached info relating to the previous position
- mlt_properties_set_double( properties, "current_time", real_timecode );
- mlt_properties_set_data( properties, "current_image", NULL, 0, NULL, NULL );
+ mlt_properties_set_int( properties, "_current_position", -1 );
+ mlt_properties_set_int( properties, "_last_position", -1 );
+ mlt_properties_set_data( properties, "av_frame", NULL, 0, NULL, NULL );
+ av_frame = NULL;
}
}
-
- // 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 ) )
- {
- // Get current image and size
- int size = 0;
- uint8_t *image = mlt_properties_get_data( properties, "current_image", &size );
+ // Duplicate the last image if necessary (see comment on rawvideo below)
+ if ( av_frame != NULL && ( paused || mlt_properties_get_int( properties, "_current_position" ) >= req_position ) && av_bypass == 0 )
+ {
// Duplicate it
- *buffer = mlt_pool_alloc( size );
- memcpy( *buffer, image, size );
+ convert_image( av_frame, *buffer, codec_context->pix_fmt, *format, *width, *height );
// Set this on the frame properties
mlt_properties_set_data( frame_properties, "image", *buffer, size, ( mlt_destructor )mlt_pool_release, NULL );
{
int ret = 0;
int got_picture = 0;
- AVFrame frame;
+ int int_position = 0;
- memset( &pkt, 0, sizeof( pkt ) );
- memset( &frame, 0, sizeof( frame ) );
+ av_init_packet( &pkt );
+
+ // Construct an AVFrame for YUV422 conversion
+ if ( av_frame == NULL )
+ {
+ av_frame = avcodec_alloc_frame( );
+ mlt_properties_set_data( properties, "av_frame", av_frame, 0, av_free, NULL );
+ }
while( ret >= 0 && !got_picture )
{
// We only deal with video from the selected video_index
if ( ret >= 0 && pkt.stream_index == index && pkt.size > 0 )
{
+ // Determine time code of the packet
+ int_position = ( int )( av_q2d( stream->time_base ) * pkt.dts * source_fps );
+ if ( context->start_time != AV_NOPTS_VALUE )
+ int_position -= ( int )( context->start_time * source_fps / AV_TIME_BASE );
+
+ int last_position = mlt_properties_get_int( properties, "_last_position" );
+ if ( int_position == last_position )
+ int_position = last_position + 1;
+ mlt_properties_set_int( properties, "_last_position", int_position );
+
// Decode the image
- ret = avcodec_decode_video( codec_context, &frame, &got_picture, pkt.data, pkt.size );
+ if ( must_decode || int_position >= req_position )
+ ret = avcodec_decode_video( codec_context, av_frame, &got_picture, pkt.data, pkt.size );
if ( got_picture )
{
- if ( pkt.pts != AV_NOPTS_VALUE && pkt.pts != 0 )
- {
- if ( current_time == 0 )
- {
- mlt_properties_set_double( properties, "_v_pts_offset", ( double )( pkt.pts / 1000000 ) );
- real_timecode += pkt.pts / 1000000;
- }
- current_time = ( double )pkt.pts / 1000000.0;
- }
- else
- current_time = real_timecode;
-
// Handle ignore
- if ( current_time < real_timecode )
+ if ( int_position < req_position )
{
ignore = 0;
got_picture = 0;
}
- else if ( current_time >= real_timecode )
+ else if ( int_position >= req_position )
{
- //current_time = real_timecode;
ignore = 0;
}
else if ( ignore -- )
}
}
- // We're finished with this packet regardless
- av_free_packet( &pkt );
- }
-
- // Now handle the picture if we have one
- if ( got_picture )
- {
- // Get current image and size
- int size = 0;
- uint8_t *image = mlt_properties_get_data( properties, "current_image", &size );
-
- if ( image == NULL || size != *width * *height * 2 )
- {
- size = *width * ( *height + 1 ) * 2;
- image = mlt_pool_alloc( size );
- mlt_properties_set_data( properties, "current_image", image, size, ( mlt_destructor )mlt_pool_release, 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
+ // Now handle the picture if we have one
+ if ( got_picture )
{
- img_convert( output, PIX_FMT_YUV422, (AVPicture *)&frame, codec_context->pix_fmt, *width, *height );
- memcpy( *buffer, output->data[ 0 ], size );
+ mlt_properties_set_int( frame_properties, "progressive", !av_frame->interlaced_frame );
+ mlt_properties_set_int( frame_properties, "top_field_first", av_frame->top_field_first );
+ convert_image( av_frame, *buffer, codec_context->pix_fmt, *format, *width, *height );
+ mlt_properties_set_data( frame_properties, "image", *buffer, size, (mlt_destructor)mlt_pool_release, NULL );
+ mlt_properties_set_double( properties, "_current_position", int_position );
}
- 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 )
- {
- double fps = mlt_properties_get_double( properties, "fps" );
- current_time = ceil( source_fps * ( double )position / fps ) * ( 1 / source_fps );
- mlt_properties_set_double( properties, "current_time", current_time );
- }
- else
- {
- mlt_properties_set_double( properties, "current_time", current_time );
- }
+ // We're finished with this packet regardless
+ av_free_packet( &pkt );
}
}
- // 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 );
+ // Very untidy - for rawvideo, the packet contains the frame, hence the free packet
+ // above will break the pause behaviour - so we wipe the frame now
+ if ( !strcmp( codec_context->codec->name, "rawvideo" ) )
+ mlt_properties_set_data( properties, "av_frame", NULL, 0, NULL, NULL );
- // Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
+ // 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 );
return 0;
}
static void producer_set_up_video( mlt_producer this, mlt_frame frame )
{
// Get the properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// Fetch the video_context
AVFormatContext *context = mlt_properties_get_data( properties, "video_context", NULL );
int index = mlt_properties_get_int( properties, "video_index" );
// Get the frame properties
- mlt_properties frame_properties = mlt_frame_properties( frame );
-
- // Lock the mutex now
- pthread_mutex_lock( &avformat_mutex );
+ mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
if ( context != NULL && index != -1 )
{
AVStream *stream = context->streams[ index ];
// Get codec context
- AVCodecContext *codec_context = &stream->codec;
+ AVCodecContext *codec_context = stream->codec;
// Get the codec
AVCodec *codec = mlt_properties_get_data( properties, "video_codec", NULL );
// 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 )
+ int norm_aspect_ratio = mlt_properties_get_int( properties, "norm_aspect_ratio" );
+ double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
+ double aspect_ratio;
+
+ // 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 ( force_aspect_ratio > 0.0 )
+ {
+ aspect_ratio = force_aspect_ratio;
+ }
+ else if ( !norm_aspect_ratio && 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 );
+ }
+ else
+ {
+ int is_pal = mlt_properties_get_double( properties, "fps" ) == 25.0;
+ aspect_ratio = is_pal ? 59.0/54.0 : 10.0/11.0;
+ }
// Determine the fps
- source_fps = ( double )codec_context->frame_rate / ( codec_context->frame_rate_base == 0 ? 1 : codec_context->frame_rate_base );
+ source_fps = ( double )codec_context->time_base.den / ( codec_context->time_base.num == 0 ? 1 : codec_context->time_base.num );
// We'll use fps if it's available
if ( source_fps > 0 && source_fps < 30 )
mlt_properties_set_double( properties, "source_fps", source_fps );
+ else
+ mlt_properties_set_double( properties, "source_fps", mlt_properties_get_double( properties, "fps" ) );
+ mlt_properties_set_double( properties, "aspect_ratio", aspect_ratio );
// 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_properties_set_double( frame_properties, "aspect_ratio", aspect_ratio );
mlt_frame_push_get_image( frame, producer_get_image );
mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL );
{
mlt_properties_set_int( frame_properties, "test_image", 1 );
}
-
- // Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
}
/** Get the audio from a frame.
static int producer_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
{
// Get the properties from the frame
- mlt_properties frame_properties = mlt_frame_properties( frame );
+ mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
// Obtain the frame number of this frame
mlt_position position = mlt_properties_get_position( frame_properties, "avformat_position" );
mlt_producer this = mlt_properties_get_data( frame_properties, "avformat_producer", NULL );
// Get the producer properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// Fetch the audio_context
AVFormatContext *context = mlt_properties_get_data( properties, "audio_context", NULL );
// 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" );
+ mlt_position expected = mlt_properties_get_position( properties, "_audio_expected" );
// Obtain the resample context if it exists (not always needed)
ReSampleContext *resample = mlt_properties_get_data( properties, "audio_resample", NULL );
int16_t *audio_buffer = mlt_properties_get_data( properties, "audio_buffer", NULL );
// Get amount of audio used
- int audio_used = mlt_properties_get_int( properties, "audio_used" );
+ int audio_used = mlt_properties_get_int( properties, "_audio_used" );
// Calculate the real time code
double real_timecode = producer_time_of_frame( this, position );
AVStream *stream = context->streams[ index ];
// Get codec context
- AVCodecContext *codec_context = &stream->codec;
+ AVCodecContext *codec_context = stream->codec;
// Packet
AVPacket pkt;
// 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 );
// 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 )
// 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, AVSEEK_FLAG_BACKWARD ) != 0 )
+ paused = 1;
// Clear the usage in the audio buffer
audio_used = 0;
-
- locked = 1;
}
}
int got_audio = 0;
int16_t *temp = mlt_pool_alloc( sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE );
- memset( &pkt, 0, sizeof( pkt ) );
+ av_init_packet( &pkt );
while( ret >= 0 && !got_audio )
{
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 )
}
// 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 ) )
+ float current_pts = av_q2d( stream->time_base ) * pkt.pts;
+ if ( seekable && ( !ignore && current_pts <= ( real_timecode - 0.02 ) ) )
ignore = 1;
}
}
// Store the number of audio samples still available
- mlt_properties_set_int( properties, "audio_used", audio_used );
+ mlt_properties_set_int( properties, "_audio_used", audio_used );
// Release the temporary audio
mlt_pool_release( temp );
else
{
// Get silence and don't touch the context
- frame->get_audio = NULL;
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;
}
static void producer_set_up_audio( mlt_producer this, mlt_frame frame )
{
// Get the properties
- mlt_properties properties = mlt_producer_properties( this );
+ mlt_properties properties = MLT_PRODUCER_PROPERTIES( this );
// Fetch the audio_context
AVFormatContext *context = mlt_properties_get_data( properties, "audio_context", NULL );
// 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 )
{
// Get the frame properties
- mlt_properties frame_properties = mlt_frame_properties( frame );
+ mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
// Get the audio stream
AVStream *stream = context->streams[ index ];
// Get codec context
- AVCodecContext *codec_context = &stream->codec;
+ AVCodecContext *codec_context = stream->codec;
// Get the codec
AVCodec *codec = mlt_properties_get_data( properties, "audio_codec", NULL );
// No codec, no show...
if ( codec != NULL )
{
- frame->get_audio = producer_get_audio;
+ mlt_frame_push_audio( frame, producer_get_audio );
mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL );
+ mlt_properties_set_int( frame_properties, "frequency", codec_context->sample_rate );
+ mlt_properties_set_int( frame_properties, "channels", codec_context->channels );
}
}
-
- // Unlock the mutex now
- pthread_mutex_unlock( &avformat_mutex );
}
/** 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_frame( this ) );
// Set up the video
producer_set_up_video( this, *frame );
producer_set_up_audio( this, *frame );
// Set the aspect_ratio
- mlt_properties_set_double( mlt_frame_properties( *frame ), "aspect_ratio", mlt_properties_get_double( mlt_producer_properties( this ), "aspect_ratio" ) );
+ mlt_properties_set_double( MLT_FRAME_PROPERTIES( *frame ), "aspect_ratio", mlt_properties_get_double( MLT_PRODUCER_PROPERTIES( this ), "aspect_ratio" ) );
// Calculate the next timecode
mlt_producer_prepare_next( this );
projects / melted / blobdiff