// ffmpeg Header files
#include <avformat.h>
#ifdef SWSCALE
-#include <swscale.h>
+# include <swscale.h>
+#endif
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+# include "audioconvert.h"
#endif
// System header files
#endif
}
+/** Allocate the image buffer and set it on the frame.
+*/
+
+static int allocate_buffer( mlt_properties frame_properties, AVCodecContext *codec_context, uint8_t **buffer, mlt_image_format *format, int *width, int *height )
+{
+ int size = 0;
+
+ if ( codec_context->width == 0 || codec_context->height == 0 )
+ return size;
+
+ *width = codec_context->width;
+ *height = codec_context->height;
+ mlt_properties_set_int( frame_properties, "width", *width );
+ mlt_properties_set_int( frame_properties, "height", *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;
+ }
+
+ // Construct the output image
+ *buffer = mlt_pool_alloc( size );
+ if ( *buffer )
+ mlt_properties_set_data( frame_properties, "image", *buffer, size, (mlt_destructor)mlt_pool_release, NULL );
+ else
+ size = 0;
+
+ return size;
+}
+
/** Get an image from a frame.
*/
// 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)
- *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 );
-
- // Construct the output image
- *buffer = mlt_pool_alloc( size );
-
// Temporary hack to improve intra frame only
must_decode = strcmp( codec_context->codec->name, "mjpeg" ) &&
strcmp( codec_context->codec->name, "rawvideo" ) &&
if ( av_frame != NULL && got_picture && ( paused || current_position >= req_position ) && av_bypass == 0 )
{
// Duplicate it
- 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 );
+ if ( allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) )
+ convert_image( av_frame, *buffer, codec_context->pix_fmt, *format, *width, *height );
+ else
+ mlt_frame_get_image( frame, buffer, format, width, height, writable );
}
else
{
// Now handle the picture if we have one
if ( got_picture )
{
- mlt_properties_set_int( frame_properties, "progressive", !av_frame->interlaced_frame );
- mlt_properties_set_int( 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_int( properties, "_current_position", int_position );
- mlt_properties_set_int( properties, "_got_picture", 1 );
+ if ( allocate_buffer( frame_properties, codec_context, buffer, format, width, height ) )
+ {
+ convert_image( av_frame, *buffer, codec_context->pix_fmt, *format, *width, *height );
+ mlt_properties_set_int( frame_properties, "progressive", !av_frame->interlaced_frame );
+ mlt_properties_set_int( properties, "top_field_first", av_frame->top_field_first );
+ mlt_properties_set_int( properties, "_current_position", int_position );
+ mlt_properties_set_int( properties, "_got_picture", 1 );
+ }
+ else
+ {
+ got_picture = 0;
+ }
}
}
if ( !got_picture )
{
// Remember that we can't use this later
mlt_properties_set_int( properties, "video_index", -1 );
+ index = -1;
}
avformat_unlock( );
}
// No codec, no show...
- if ( codec != NULL )
+ if ( codec && index > -1 )
{
double source_fps = 0;
double force_aspect_ratio = mlt_properties_get_double( properties, "force_aspect_ratio" );
// Obtain the resample context if it exists (not always needed)
ReSampleContext *resample = mlt_properties_get_data( properties, "audio_resample", NULL );
- // Obtain the audio buffer
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+ // Get the format converter context if it exists
+ AVAudioConvert *convert = mlt_properties_get_data( properties, "audio_convert", NULL );
+#endif
+
+ // Obtain the audio buffers
int16_t *audio_buffer = mlt_properties_get_data( properties, "audio_buffer", NULL );
+ int16_t *decode_buffer = mlt_properties_get_data( properties, "decode_buffer", NULL );
+ int16_t *convert_buffer = mlt_properties_get_data( properties, "convert_buffer", NULL );
// Get amount of audio used
int audio_used = mlt_properties_get_int( properties, "_audio_used" );
int paused = 0;
// Check for resample and create if necessary
- if ( resample == NULL && codec_context->channels <= 2 )
+ if ( resample == NULL && ( *frequency != codec_context->sample_rate || codec_context->channels <= 2 ) )
{
// Create the resampler
resample = audio_resample_init( *channels, codec_context->channels, *frequency, codec_context->sample_rate );
*frequency = codec_context->sample_rate;
}
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+ // Check for audio format converter and create if necessary
+ // TODO: support higher resolutions than 16-bit.
+ if ( convert == NULL && codec_context->sample_fmt != SAMPLE_FMT_S16 )
+ {
+ // Create single channel converter for interleaved with no mixing matrix
+ convert = av_audio_convert_alloc( SAMPLE_FMT_S16, 1, codec_context->sample_fmt, 1, NULL, 0 );
+ mlt_properties_set_data( properties, "audio_convert", convert, 0, ( mlt_destructor )av_audio_convert_free, NULL );
+ }
+#endif
+
// Check for audio buffer and create if necessary
if ( audio_buffer == NULL )
{
mlt_properties_set_data( properties, "audio_buffer", audio_buffer, 0, ( mlt_destructor )mlt_pool_release, NULL );
}
+ // Check for decoder buffer and create if necessary
+ if ( decode_buffer == NULL )
+ {
+ // Allocate the audio buffer
+ decode_buffer = mlt_pool_alloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof( int16_t ) );
+
+ // And store it on properties for reuse
+ mlt_properties_set_data( properties, "decode_buffer", decode_buffer, 0, ( mlt_destructor )mlt_pool_release, NULL );
+ }
+
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+ // Check for format converter buffer and create if necessary
+ if ( resample && convert && convert_buffer == NULL )
+ {
+ // Allocate the audio buffer
+ convert_buffer = mlt_pool_alloc( AVCODEC_MAX_AUDIO_FRAME_SIZE * sizeof( int16_t ) );
+
+ // And store it on properties for reuse
+ mlt_properties_set_data( properties, "convert_buffer", convert_buffer, 0, ( mlt_destructor )mlt_pool_release, NULL );
+ }
+#endif
+
// Seek if necessary
if ( position != expected )
{
{
int ret = 0;
int got_audio = 0;
- int16_t *temp = av_malloc( sizeof( int16_t ) * AVCODEC_MAX_AUDIO_FRAME_SIZE );
av_init_packet( &pkt );
// Decode the audio
#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(29<<8)+0))
- ret = avcodec_decode_audio2( codec_context, temp, &data_size, ptr, len );
+ ret = avcodec_decode_audio2( codec_context, decode_buffer, &data_size, ptr, len );
#else
- ret = avcodec_decode_audio( codec_context, temp, &data_size, ptr, len );
+ ret = avcodec_decode_audio( codec_context, decode_buffer, &data_size, ptr, len );
#endif
if ( ret < 0 )
{
if ( data_size > 0 )
{
- if ( resample != NULL )
+ int src_stride[6]= { av_get_bits_per_sample_format( codec_context->sample_fmt ) / 8 };
+ int dst_stride[6]= { av_get_bits_per_sample_format( SAMPLE_FMT_S16 ) / 8 };
+
+ if ( resample )
{
- audio_used += audio_resample( resample, &audio_buffer[ audio_used * *channels ], temp, data_size / ( codec_context->channels * sizeof( int16_t ) ) );
+ int16_t *source = decode_buffer;
+ int16_t *dest = &audio_buffer[ audio_used * *channels ];
+ int convert_samples = data_size / src_stride[0];
+
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+ if ( convert )
+ {
+ const void *src_buf[6] = { decode_buffer };
+ void *dst_buf[6] = { convert_buffer };
+ av_audio_convert( convert, dst_buf, dst_stride, src_buf, src_stride, convert_samples );
+ source = convert_buffer;
+ }
+#endif
+ audio_used += audio_resample( resample, dest, source, convert_samples / codec_context->channels );
}
else
{
- memcpy( &audio_buffer[ audio_used * *channels ], temp, data_size );
- audio_used += data_size / ( codec_context->channels * sizeof( int16_t ) );
+#if (LIBAVCODEC_VERSION_INT >= ((51<<16)+(71<<8)+0))
+ if ( convert )
+ {
+ const void *src_buf[6] = { decode_buffer };
+ void *dst_buf[6] = { &audio_buffer[ audio_used * *channels ] };
+ av_audio_convert( convert, dst_buf, dst_stride, src_buf, src_stride, data_size / src_stride[0] );
+ }
+ else
+#endif
+ {
+ memcpy( &audio_buffer[ audio_used * *channels ], decode_buffer, data_size );
+ }
+ audio_used += data_size / *channels / src_stride[0];
}
// Handle ignore
// Store the number of audio samples still available
mlt_properties_set_int( properties, "_audio_used", audio_used );
-
- // Release the temporary audio
- av_free( temp );
}
else
{
}
// Update the audio properties if the index changed
- if ( index > -1 && index != mlt_properties_get_int( properties, "_audio_index" ) ) {
+ if ( index > -1 && index != mlt_properties_get_int( properties, "_audio_index" ) )
+ {
mlt_properties_set_int( properties, "_audio_index", index );
mlt_properties_set_data( properties, "audio_codec", NULL, 0, NULL, NULL );
}
{
// Remember that we can't use this later
mlt_properties_set_int( properties, "audio_index", -1 );
+ index = -1;
}
avformat_unlock( );
}
// No codec, no show...
- if ( codec != NULL )
+ if ( codec && index > -1 )
{
mlt_frame_push_audio( frame, producer_get_audio );
mlt_properties_set_data( frame_properties, "avformat_producer", this, 0, NULL, NULL );
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