#include "avcodec.h"
-static const unsigned int pi_channels_maps[9] =
-{
- 0,
- AOUT_CHAN_CENTER,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER |
- AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER |
- AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER |
- AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT |
- AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
- AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_CENTER |
- AOUT_CHAN_MIDDLELEFT | AOUT_CHAN_MIDDLERIGHT |
- AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT | AOUT_CHAN_LFE,
-};
-
/*****************************************************************************
* decoder_sys_t : decoder descriptor
*****************************************************************************/
FFMPEG_COMMON_MEMBERS
/* Temporary buffer for libavcodec */
+ int i_output_max;
uint8_t *p_output;
/*
/* */
int i_reject_count;
+
+ /* */
+ bool b_extract;
+ int pi_extraction[AOUT_CHAN_MAX];
+ int i_previous_channels;
+ int64_t i_previous_layout;
};
-static void SetupOutputCodec( decoder_t *p_dec );
+static void SetupOutputFormat( decoder_t *p_dec, bool b_trust );
/*****************************************************************************
* InitAudioDec: initialize audio decoder
/* ***** Fill p_context with init values ***** */
p_sys->p_context->sample_rate = p_dec->fmt_in.audio.i_rate;
p_sys->p_context->channels = p_dec->fmt_in.audio.i_channels;
- if( !p_dec->fmt_in.audio.i_physical_channels )
- {
- msg_Warn( p_dec, "Physical channel configuration not set : guessing" );
- p_dec->fmt_in.audio.i_original_channels =
- p_dec->fmt_in.audio.i_physical_channels =
- pi_channels_maps[p_sys->p_context->channels];
- }
-
- p_dec->fmt_out.audio.i_physical_channels =
- p_dec->fmt_out.audio.i_original_channels =
- p_dec->fmt_in.audio.i_physical_channels;
p_sys->p_context->block_align = p_dec->fmt_in.audio.i_blockalign;
p_sys->p_context->bit_rate = p_dec->fmt_in.i_bitrate;
int i_offset;
int i_size;
- if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
+ if( p_dec->fmt_in.i_codec == VLC_CODEC_FLAC )
{
i_offset = 8;
i_size = p_dec->fmt_in.i_extra - 8;
}
- else if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'a', 'l', 'a', 'c' ) )
+ else if( p_dec->fmt_in.i_codec == VLC_CODEC_ALAC )
{
static const uint8_t p_pattern[] = { 0, 0, 0, 36, 'a', 'l', 'a', 'c' };
/* Find alac atom XXX it is a bit ugly */
msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
- p_sys->p_output = malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE );
+ switch( i_codec_id )
+ {
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 51, 16, 0 )
+ case CODEC_ID_WAVPACK:
+ p_sys->i_output_max = 8 * sizeof(int32_t) * 131072;
+ break;
+#endif
+ case CODEC_ID_FLAC:
+ p_sys->i_output_max = 8 * sizeof(int32_t) * 65535;
+ break;
+ default:
+ p_sys->i_output_max = 0;
+ break;
+ }
+ if( p_sys->i_output_max < AVCODEC_MAX_AUDIO_FRAME_SIZE )
+ p_sys->i_output_max = AVCODEC_MAX_AUDIO_FRAME_SIZE;
+ msg_Dbg( p_dec, "Using %d bytes output buffer", p_sys->i_output_max );
+ p_sys->p_output = malloc( p_sys->i_output_max );
+
p_sys->p_samples = NULL;
p_sys->i_samples = 0;
p_sys->i_reject_count = 0;
+ p_sys->b_extract = false;
+ p_sys->i_previous_channels = 0;
+ p_sys->i_previous_layout = 0;
aout_DateSet( &p_sys->end_date, 0 );
if( p_dec->fmt_in.audio.i_rate )
aout_DateInit( &p_sys->end_date, p_dec->fmt_in.audio.i_rate );
- /* Set output properties */
+ /* */
p_dec->fmt_out.i_cat = AUDIO_ES;
-
- SetupOutputCodec( p_dec );
+ /* Try to set as much informations as possible but do not trust it */
+ SetupOutputFormat( p_dec, false );
return VLC_SUCCESS;
}
p_buffer->start_date = aout_DateGet( &p_sys->end_date );
p_buffer->end_date = aout_DateIncrement( &p_sys->end_date, i_samples );
- memcpy( p_buffer->p_buffer, p_sys->p_samples, p_buffer->i_nb_bytes );
+ if( p_sys->b_extract )
+ aout_ChannelExtract( p_buffer->p_buffer, p_dec->fmt_out.audio.i_channels,
+ p_sys->p_samples, p_sys->p_context->channels, i_samples,
+ p_sys->pi_extraction, p_dec->fmt_out.audio.i_bitspersample );
+ else
+ memcpy( p_buffer->p_buffer, p_sys->p_samples, p_buffer->i_nb_bytes );
p_sys->p_samples += p_buffer->i_nb_bytes;
p_sys->i_samples -= i_samples;
block_Release( p_block );
return NULL;
}
- if( p_block->i_buffer > AVCODEC_MAX_AUDIO_FRAME_SIZE )
+
+ i_output = __MAX( p_block->i_buffer, p_sys->i_output_max );
+ if( i_output > p_sys->i_output_max )
{
/* Grow output buffer if necessary (eg. for PCM data) */
- p_sys->p_output = realloc(p_sys->p_output, p_block->i_buffer);
+ p_sys->p_output = realloc( p_sys->p_output, i_output );
}
*pp_block = p_block = block_Realloc( p_block, 0, p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
memset( &p_block->p_buffer[p_block->i_buffer], 0, FF_INPUT_BUFFER_PADDING_SIZE );
#if LIBAVCODEC_VERSION_INT >= ((52<<16)+(0<<8)+0)
- i_output = __MAX( AVCODEC_MAX_AUDIO_FRAME_SIZE, p_block->i_buffer );
i_used = avcodec_decode_audio2( p_sys->p_context,
(int16_t*)p_sys->p_output, &i_output,
p_block->p_buffer, p_block->i_buffer );
}
/* **** Set audio output parameters **** */
- SetupOutputCodec( p_dec );
- p_dec->fmt_out.audio.i_rate = p_sys->p_context->sample_rate;
- p_dec->fmt_out.audio.i_channels = p_sys->p_context->channels;
- p_dec->fmt_out.audio.i_original_channels =
- p_dec->fmt_out.audio.i_physical_channels =
- pi_channels_maps[p_sys->p_context->channels];
+ SetupOutputFormat( p_dec, true );
if( p_block->i_pts != 0 &&
p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
/*****************************************************************************
*
*****************************************************************************/
-static void SetupOutputCodec( decoder_t *p_dec )
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 52, 2, 0 )
+# define LIBAVCODEC_AUDIO_LAYOUT
+#else
+# warning "Audio channel layout is unsupported by your avcodec version."
+#endif
+
+#if defined(LIBAVCODEC_AUDIO_LAYOUT)
+static const uint64_t pi_channels_map[][2] =
+{
+ { CH_FRONT_LEFT, AOUT_CHAN_LEFT },
+ { CH_FRONT_RIGHT, AOUT_CHAN_RIGHT },
+ { CH_FRONT_CENTER, AOUT_CHAN_CENTER },
+ { CH_LOW_FREQUENCY, AOUT_CHAN_LFE },
+ { CH_BACK_LEFT, AOUT_CHAN_REARLEFT },
+ { CH_BACK_RIGHT, AOUT_CHAN_REARRIGHT },
+ { CH_FRONT_LEFT_OF_CENTER, 0 },
+ { CH_FRONT_RIGHT_OF_CENTER, 0 },
+ { CH_BACK_CENTER, AOUT_CHAN_REARCENTER },
+ { CH_SIDE_LEFT, AOUT_CHAN_MIDDLELEFT },
+ { CH_SIDE_RIGHT, AOUT_CHAN_MIDDLERIGHT },
+ { CH_TOP_CENTER, 0 },
+ { CH_TOP_FRONT_LEFT, 0 },
+ { CH_TOP_FRONT_CENTER, 0 },
+ { CH_TOP_FRONT_RIGHT, 0 },
+ { CH_TOP_BACK_LEFT, 0 },
+ { CH_TOP_BACK_CENTER, 0 },
+ { CH_TOP_BACK_RIGHT, 0 },
+ { CH_STEREO_LEFT, 0 },
+ { CH_STEREO_RIGHT, 0 },
+};
+#else
+static const uint64_t pi_channels_map[][2] =
+{
+ { 0, AOUT_CHAN_LEFT },
+ { 0, AOUT_CHAN_RIGHT },
+ { 0, AOUT_CHAN_CENTER },
+ { 0, AOUT_CHAN_LFE },
+ { 0, AOUT_CHAN_REARLEFT },
+ { 0, AOUT_CHAN_REARRIGHT },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, AOUT_CHAN_REARCENTER },
+ { 0, AOUT_CHAN_MIDDLELEFT },
+ { 0, AOUT_CHAN_MIDDLERIGHT },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+ { 0, 0 },
+};
+#endif
+
+static void SetupOutputFormat( decoder_t *p_dec, bool b_trust )
{
decoder_sys_t *p_sys = p_dec->p_sys;
-#if defined(AV_VERSION_INT) && LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 51, 65, 0 )
+#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT( 51, 65, 0 )
switch( p_sys->p_context->sample_fmt )
{
case SAMPLE_FMT_U8:
- p_dec->fmt_out.i_codec = VLC_FOURCC('u','8',' ',' ');
+ p_dec->fmt_out.i_codec = VLC_CODEC_U8;
p_dec->fmt_out.audio.i_bitspersample = 8;
break;
case SAMPLE_FMT_S32:
- p_dec->fmt_out.i_codec = AOUT_FMT_S32_NE;
+ p_dec->fmt_out.i_codec = VLC_CODEC_S32N;
p_dec->fmt_out.audio.i_bitspersample = 32;
break;
case SAMPLE_FMT_FLT:
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','3','2');
+ p_dec->fmt_out.i_codec = VLC_CODEC_FL32;
p_dec->fmt_out.audio.i_bitspersample = 32;
break;
case SAMPLE_FMT_DBL:
- p_dec->fmt_out.i_codec = VLC_FOURCC('f','l','6','4');
+ p_dec->fmt_out.i_codec = VLC_CODEC_FL64;
p_dec->fmt_out.audio.i_bitspersample = 64;
break;
case SAMPLE_FMT_S16:
default:
- p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
+ p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
p_dec->fmt_out.audio.i_bitspersample = 16;
break;
}
#else
- p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
+ p_dec->fmt_out.i_codec = VLC_CODEC_S16N;
p_dec->fmt_out.audio.i_bitspersample = 16;
#endif
+ p_dec->fmt_out.audio.i_rate = p_sys->p_context->sample_rate;
+ p_dec->fmt_out.audio.i_channels = p_sys->p_context->channels;
+
+ /* */
+#if defined(LIBAVCODEC_AUDIO_LAYOUT)
+ if( p_sys->i_previous_channels == p_sys->p_context->channels &&
+ p_sys->i_previous_layout == p_sys->p_context->channel_layout )
+ return;
+#else
+ if( p_sys->i_previous_channels == p_sys->p_context->channels )
+ return;
+#endif
+ if( b_trust )
+ {
+ p_sys->i_previous_channels = p_sys->p_context->channels;
+#if defined(LIBAVCODEC_AUDIO_LAYOUT)
+ p_sys->i_previous_layout = p_sys->p_context->channel_layout;
+#endif
+ }
+
+ /* Specified order
+ * FIXME should we use fmt_in.audio.i_physical_channels or not ?
+ */
+#if defined(LIBAVCODEC_AUDIO_LAYOUT)
+ const unsigned i_order_max = 8 * sizeof(p_sys->p_context->channel_layout);
+#else
+ const unsigned i_order_max = 64;
+#endif
+ uint32_t pi_order_src[i_order_max];
+ int i_channels_src = 0;
+
+#if defined(LIBAVCODEC_AUDIO_LAYOUT)
+ if( p_sys->p_context->channel_layout )
+ {
+ for( unsigned i = 0; i < sizeof(pi_channels_map)/sizeof(*pi_channels_map); i++ )
+ {
+ if( p_sys->p_context->channel_layout & pi_channels_map[i][0] )
+ pi_order_src[i_channels_src++] = pi_channels_map[i][1];
+ }
+ }
+ else
+#endif
+ {
+ /* Create default order */
+ if( b_trust )
+ msg_Warn( p_dec, "Physical channel configuration not set : guessing" );
+ for( unsigned int i = 0; i < __MIN( i_order_max, (unsigned)p_sys->p_context->channels ); i++ )
+ {
+ if( i < sizeof(pi_channels_map)/sizeof(*pi_channels_map) )
+ pi_order_src[i_channels_src++] = pi_channels_map[i][1];
+ }
+ }
+ if( i_channels_src != p_sys->p_context->channels && b_trust )
+ msg_Err( p_dec, "Channel layout not understood" );
+
+ uint32_t i_layout_dst;
+ int i_channels_dst;
+ p_sys->b_extract = aout_CheckChannelExtraction( p_sys->pi_extraction,
+ &i_layout_dst, &i_channels_dst,
+ NULL, pi_order_src, i_channels_src );
+ if( i_channels_dst != i_channels_src && b_trust )
+ msg_Warn( p_dec, "%d channels are dropped", i_channels_src - i_channels_dst );
+
+ p_dec->fmt_out.audio.i_physical_channels =
+ p_dec->fmt_out.audio.i_original_channels = i_layout_dst;
+ p_dec->fmt_out.audio.i_channels = i_channels_dst;
}
+
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