/*****************************************************************************
- * audio.c: audio decoder using ffmpeg library
+ * audio.c: audio decoder using libavcodec library
*****************************************************************************
- * Copyright (C) 1999-2003 the VideoLAN team
+ * Copyright (C) 1999-2003 VLC authors and VideoLAN
* $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@videolan.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
# include "config.h"
#endif
+#include <assert.h>
+
#include <vlc_common.h>
#include <vlc_aout.h>
#include <vlc_codec.h>
+#include <vlc_avcodec.h>
-/* ffmpeg header */
-#ifdef HAVE_LIBAVCODEC_AVCODEC_H
-# include <libavcodec/avcodec.h>
-#elif defined(HAVE_FFMPEG_AVCODEC_H)
-# include <ffmpeg/avcodec.h>
-#else
-# include <avcodec.h>
-#endif
+#include <libavcodec/avcodec.h>
+#include <libavutil/mem.h>
-#include "avcodec.h"
+#include <libavutil/audioconvert.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,
-};
+#include "avcodec.h"
/*****************************************************************************
* decoder_sys_t : decoder descriptor
*****************************************************************************/
struct decoder_sys_t
{
- FFMPEG_COMMON_MEMBERS
-
- /* Temporary buffer for libavcodec */
- uint8_t *p_output;
+ AVCODEC_COMMON_MEMBERS
/*
* Output properties
*/
audio_sample_format_t aout_format;
- audio_date_t end_date;
-
- /*
- *
- */
- uint8_t *p_samples;
- int i_samples;
+ date_t end_date;
/* */
int i_reject_count;
-};
-
-static void SetupOutputCodec( decoder_t *p_dec );
-
-/*****************************************************************************
- * InitAudioDec: initialize audio decoder
- *****************************************************************************
- * The ffmpeg codec will be opened, some memory allocated.
- *****************************************************************************/
-int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
- AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
-{
- decoder_sys_t *p_sys;
-
- /* Allocate the memory needed to store the decoder's structure */
- if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
- {
- return VLC_ENOMEM;
- }
- p_sys->p_context = p_context;
- p_sys->p_codec = p_codec;
- p_sys->i_codec_id = i_codec_id;
- p_sys->psz_namecodec = psz_namecodec;
- p_sys->b_delayed_open = false;
+ /* */
+ bool b_extract;
+ int pi_extraction[AOUT_CHAN_MAX];
+ int i_previous_channels;
+ int64_t i_previous_layout;
+};
- /* ***** 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];
- }
+#define BLOCK_FLAG_PRIVATE_REALLOCATED (1 << BLOCK_FLAG_PRIVATE_SHIFT)
- 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;
-#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
- p_sys->p_context->bits_per_sample = p_dec->fmt_in.audio.i_bitspersample;
-#else
- p_sys->p_context->bits_per_coded_sample = p_dec->fmt_in.audio.i_bitspersample;
-#endif
+static void SetupOutputFormat( decoder_t *p_dec, bool b_trust );
+static int GetAudioBuf( struct AVCodecContext *, AVFrame * );
+static void InitDecoderConfig( decoder_t *p_dec, AVCodecContext *p_context )
+{
if( p_dec->fmt_in.i_extra > 0 )
{
const uint8_t * const p_src = p_dec->fmt_in.p_extra;
- int i_offset;
- int i_size;
- if( p_dec->fmt_in.i_codec == VLC_FOURCC( 'f', 'l', 'a', 'c' ) )
- {
- 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' ) )
+ int i_offset = 0;
+ int i_size = p_dec->fmt_in.i_extra;
+
+ 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 */
if( i_size < 36 )
i_size = 0;
}
- else
- {
- i_offset = 0;
- i_size = p_dec->fmt_in.i_extra;
- }
if( i_size > 0 )
{
- p_sys->p_context->extradata =
+ p_context->extradata =
malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE );
- if( p_sys->p_context->extradata )
+ if( p_context->extradata )
{
- uint8_t *p_dst = p_sys->p_context->extradata;
+ uint8_t *p_dst = p_context->extradata;
- p_sys->p_context->extradata_size = i_size;
+ p_context->extradata_size = i_size;
memcpy( &p_dst[0], &p_src[i_offset], i_size );
memset( &p_dst[i_size], 0, FF_INPUT_BUFFER_PADDING_SIZE );
}
else
{
- p_sys->p_context->extradata_size = 0;
- p_sys->p_context->extradata = NULL;
+ p_context->extradata_size = 0;
+ p_context->extradata = NULL;
}
+}
- /* ***** Open the codec ***** */
- vlc_mutex_lock( &avcodec_lock );
+/*****************************************************************************
+ * InitAudioDec: initialize audio decoder
+ *****************************************************************************
+ * The avcodec codec will be opened, some memory allocated.
+ *****************************************************************************/
+int InitAudioDec( decoder_t *p_dec, AVCodecContext *p_context,
+ AVCodec *p_codec, int i_codec_id, const char *psz_namecodec )
+{
+ decoder_sys_t *p_sys;
+
+ /* Allocate the memory needed to store the decoder's structure */
+ if( ( p_dec->p_sys = p_sys = malloc(sizeof(*p_sys)) ) == NULL )
+ {
+ return VLC_ENOMEM;
+ }
+
+ p_codec->type = AVMEDIA_TYPE_AUDIO;
+ p_context->codec_type = AVMEDIA_TYPE_AUDIO;
+ p_context->codec_id = i_codec_id;
+ p_context->get_buffer = GetAudioBuf;
+ p_sys->p_context = p_context;
+ p_sys->p_codec = p_codec;
+ p_sys->i_codec_id = i_codec_id;
+ p_sys->psz_namecodec = psz_namecodec;
+ p_sys->b_delayed_open = true;
+
+ // Initialize decoder extradata
+ InitDecoderConfig( p_dec, p_context);
- if( avcodec_open( p_sys->p_context, p_sys->p_codec ) < 0 )
+ /* ***** Open the codec ***** */
+ if( ffmpeg_OpenCodec( p_dec ) < 0 )
{
- vlc_mutex_unlock( &avcodec_lock );
msg_Err( p_dec, "cannot open codec (%s)", p_sys->psz_namecodec );
free( p_sys->p_context->extradata );
free( p_sys );
return VLC_EGENERIC;
}
- vlc_mutex_unlock( &avcodec_lock );
-
- msg_Dbg( p_dec, "ffmpeg codec (%s) started", p_sys->psz_namecodec );
- p_sys->p_output = malloc( AVCODEC_MAX_AUDIO_FRAME_SIZE );
- 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;
+ /* Try to set as much information as possible but do not trust it */
+ SetupOutputFormat( p_dec, false );
- SetupOutputCodec( p_dec );
+ date_Set( &p_sys->end_date, 0 );
+ if( p_dec->fmt_out.audio.i_rate )
+ date_Init( &p_sys->end_date, p_dec->fmt_out.audio.i_rate, 1 );
+ else if( p_dec->fmt_in.audio.i_rate )
+ date_Init( &p_sys->end_date, p_dec->fmt_in.audio.i_rate, 1 );
return VLC_SUCCESS;
}
-/*****************************************************************************
- * SplitBuffer: Needed because aout really doesn't like big audio chunk and
- * wma produces easily > 30000 samples...
- *****************************************************************************/
-static aout_buffer_t *SplitBuffer( decoder_t *p_dec )
+/**
+ * Allocates decoded audio buffer for libavcodec to use.
+ */
+static int GetAudioBuf( AVCodecContext *ctx, AVFrame *buf )
{
- decoder_sys_t *p_sys = p_dec->p_sys;
- int i_samples = __MIN( p_sys->i_samples, 4096 );
- aout_buffer_t *p_buffer;
-
- if( i_samples == 0 ) return NULL;
-
- if( ( p_buffer = decoder_NewAudioBuffer( p_dec, i_samples ) ) == NULL )
- return NULL;
-
- 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 );
+ block_t *block;
+ bool planar = av_sample_fmt_is_planar( ctx->sample_fmt );
+ unsigned channels = planar ? 1 : ctx->channels;
+ unsigned planes = planar ? ctx->channels : 1;
+
+ int bytes = av_samples_get_buffer_size( &buf->linesize[0], channels,
+ buf->nb_samples, ctx->sample_fmt,
+ 16 );
+ assert( bytes >= 0 );
+ block = block_Alloc( bytes * planes );
+ if( unlikely(block == NULL) )
+ return AVERROR(ENOMEM);
+
+ block->i_nb_samples = buf->nb_samples;
+ buf->opaque = block;
+
+ if( planes > AV_NUM_DATA_POINTERS )
+ {
+ uint8_t **ext = malloc( sizeof( *ext ) * planes );
+ if( unlikely(ext == NULL) )
+ {
+ block_Release( block );
+ return AVERROR(ENOMEM);
+ }
+ buf->extended_data = ext;
+ }
+ else
+ buf->extended_data = buf->data;
- p_sys->p_samples += p_buffer->i_nb_bytes;
- p_sys->i_samples -= i_samples;
+ uint8_t *buffer = block->p_buffer;
+ for( unsigned i = 0; i < planes; i++ )
+ {
+ buf->linesize[i] = buf->linesize[0];
+ buf->extended_data[i] = buffer;
+ buffer += bytes;
+ }
- return p_buffer;
+ return 0;
}
/*****************************************************************************
* DecodeAudio: Called to decode one frame
*****************************************************************************/
-aout_buffer_t * DecodeAudio ( decoder_t *p_dec, block_t **pp_block )
+block_t * DecodeAudio ( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
- int i_used, i_output;
- aout_buffer_t *p_buffer;
- block_t *p_block;
+ AVCodecContext *ctx = p_sys->p_context;
+
+ if( !pp_block || !*pp_block )
+ return NULL;
- if( !pp_block || !*pp_block ) return NULL;
+ block_t *p_block = *pp_block;
- p_block = *pp_block;
+ if( !ctx->extradata_size && p_dec->fmt_in.i_extra && p_sys->b_delayed_open)
+ {
+ InitDecoderConfig( p_dec, ctx );
+ if( ffmpeg_OpenCodec( p_dec ) )
+ msg_Err( p_dec, "Cannot open decoder %s", p_sys->psz_namecodec );
+ }
+
+ if( p_sys->b_delayed_open )
+ goto end;
if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
- block_Release( p_block );
- avcodec_flush_buffers( p_sys->p_context );
- p_sys->i_samples = 0;
- aout_DateSet( &p_sys->end_date, 0 );
+ avcodec_flush_buffers( ctx );
+ date_Set( &p_sys->end_date, 0 );
- if( p_sys->i_codec_id == CODEC_ID_MP2 || p_sys->i_codec_id == CODEC_ID_MP3 )
+ if( p_sys->i_codec_id == AV_CODEC_ID_MP2 || p_sys->i_codec_id == AV_CODEC_ID_MP3 )
p_sys->i_reject_count = 3;
- return NULL;
- }
- if( p_sys->i_samples > 0 )
- {
- /* More data */
- p_buffer = SplitBuffer( p_dec );
- if( !p_buffer ) block_Release( p_block );
- return p_buffer;
+ goto end;
}
- if( !aout_DateGet( &p_sys->end_date ) && !p_block->i_pts )
- {
- /* We've just started the stream, wait for the first PTS. */
- block_Release( p_block );
- return NULL;
- }
+ /* We've just started the stream, wait for the first PTS. */
+ if( !date_Get( &p_sys->end_date ) && p_block->i_pts <= VLC_TS_INVALID )
+ goto end;
if( p_block->i_buffer <= 0 )
+ goto end;
+
+ if( (p_block->i_flags & BLOCK_FLAG_PRIVATE_REALLOCATED) == 0 )
{
- block_Release( p_block );
- return NULL;
- }
- if( p_block->i_buffer > AVCODEC_MAX_AUDIO_FRAME_SIZE )
- {
- /* Grow output buffer if necessary (eg. for PCM data) */
- p_sys->p_output = realloc(p_sys->p_output, p_block->i_buffer);
+ p_block = block_Realloc( p_block, 0, p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
+ if( !p_block )
+ return NULL;
+ p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE;
+ memset( &p_block->p_buffer[p_block->i_buffer], 0, FF_INPUT_BUFFER_PADDING_SIZE );
+
+ p_block->i_flags |= BLOCK_FLAG_PRIVATE_REALLOCATED;
}
- *pp_block = p_block = block_Realloc( p_block, 0, p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE );
- if( !p_block )
- return NULL;
- 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 );
-#else
- i_used = avcodec_decode_audio( p_sys->p_context,
- (int16_t*)p_sys->p_output, &i_output,
- p_block->p_buffer, p_block->i_buffer );
-#endif
+ AVFrame frame;
+ memset( &frame, 0, sizeof( frame ) );
- if( i_used < 0 || i_output < 0 )
+ for( int got_frame = 0; !got_frame; )
{
- if( i_used < 0 )
+ if( p_block->i_buffer == 0 )
+ goto end;
+
+ AVPacket pkt;
+ av_init_packet( &pkt );
+ pkt.data = p_block->p_buffer;
+ pkt.size = p_block->i_buffer;
+
+ int used = avcodec_decode_audio4( ctx, &frame, &got_frame, &pkt );
+ if( used < 0 )
+ {
msg_Warn( p_dec, "cannot decode one frame (%zu bytes)",
p_block->i_buffer );
+ goto end;
+ }
- block_Release( p_block );
- return NULL;
- }
- else if( (size_t)i_used > p_block->i_buffer )
- {
- i_used = p_block->i_buffer;
+ assert( p_block->i_buffer >= (unsigned)used );
+ p_block->p_buffer += used;
+ p_block->i_buffer -= used;
}
- p_block->i_buffer -= i_used;
- p_block->p_buffer += i_used;
-
- if( p_sys->p_context->channels <= 0 || p_sys->p_context->channels > 8 ||
- p_sys->p_context->sample_rate <= 0 )
+ if( ctx->channels <= 0 || ctx->channels > 8 || ctx->sample_rate <= 0 )
{
msg_Warn( p_dec, "invalid audio properties channels count %d, sample rate %d",
- p_sys->p_context->channels, p_sys->p_context->sample_rate );
- block_Release( p_block );
- return NULL;
+ ctx->channels, ctx->sample_rate );
+ goto end;
}
- if( p_dec->fmt_out.audio.i_rate != (unsigned int)p_sys->p_context->sample_rate )
+ if( p_dec->fmt_out.audio.i_rate != (unsigned int)ctx->sample_rate )
+ date_Init( &p_sys->end_date, ctx->sample_rate, 1 );
+
+ if( p_block->i_pts > VLC_TS_INVALID &&
+ p_block->i_pts > date_Get( &p_sys->end_date ) )
{
- aout_DateInit( &p_sys->end_date, p_sys->p_context->sample_rate );
- aout_DateSet( &p_sys->end_date, p_block->i_pts );
+ date_Set( &p_sys->end_date, p_block->i_pts );
}
- /* **** 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];
-
- if( p_block->i_pts != 0 &&
- p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
- {
- aout_DateSet( &p_sys->end_date, p_block->i_pts );
+ if( p_block->i_buffer == 0 )
+ { /* Done with this buffer */
+ block_Release( p_block );
+ *pp_block = NULL;
}
- p_block->i_pts = 0;
- /* **** Now we can output these samples **** */
- p_sys->i_samples = i_output / (p_dec->fmt_out.audio.i_bitspersample / 8) / p_sys->p_context->channels;
- p_sys->p_samples = p_sys->p_output;
+ /* NOTE WELL: Beyond this point, p_block now refers to the DECODED block */
+ p_block = frame.opaque;
+ SetupOutputFormat( p_dec, true );
/* Silent unwanted samples */
if( p_sys->i_reject_count > 0 )
{
- memset( p_sys->p_output, 0, i_output );
+ memset( p_block->p_buffer, 0, p_block->i_buffer );
p_sys->i_reject_count--;
}
- p_buffer = SplitBuffer( p_dec );
- if( !p_buffer ) block_Release( p_block );
- return p_buffer;
-}
+ block_t *p_buffer = decoder_NewAudioBuffer( p_dec, p_block->i_nb_samples );
+ if (!p_buffer)
+ return NULL;
+ assert( p_block->i_nb_samples >= (unsigned)frame.nb_samples );
+ assert( p_block->i_nb_samples == p_buffer->i_nb_samples );
+ p_block->i_buffer = p_buffer->i_buffer; /* drop buffer padding */
-/*****************************************************************************
- * EndAudioDec: audio decoder destruction
- *****************************************************************************/
-void EndAudioDec( decoder_t *p_dec )
-{
- decoder_sys_t *p_sys = p_dec->p_sys;
+ /* Interleave audio if required */
+ if( av_sample_fmt_is_planar( ctx->sample_fmt ) )
+ {
+ aout_Interleave( p_buffer->p_buffer, p_block->p_buffer,
+ p_block->i_nb_samples, ctx->channels,
+ p_dec->fmt_out.audio.i_format );
+ if( ctx->channels > AV_NUM_DATA_POINTERS )
+ free( frame.extended_data );
+ block_Release( p_block );
+ p_block = p_buffer;
+ }
+ else /* FIXME: improve decoder_NewAudioBuffer(), avoid useless buffer... */
+ block_Release( p_buffer );
+
+ if (p_sys->b_extract)
+ { /* TODO: do not drop channels... at least not here */
+ p_buffer = block_Alloc( p_dec->fmt_out.audio.i_bytes_per_frame
+ * frame.nb_samples );
+ if( unlikely(p_buffer == NULL) )
+ {
+ block_Release( p_block );
+ return NULL;
+ }
+ aout_ChannelExtract( p_buffer->p_buffer,
+ p_dec->fmt_out.audio.i_channels,
+ p_block->p_buffer, ctx->channels,
+ frame.nb_samples, p_sys->pi_extraction,
+ p_dec->fmt_out.audio.i_bitspersample );
+ block_Release( p_block );
+ p_block = p_buffer;
+ }
- free( p_sys->p_output );
+ p_block->i_nb_samples = frame.nb_samples;
+ p_block->i_buffer = frame.nb_samples
+ * p_dec->fmt_out.audio.i_bytes_per_frame;
+ p_block->i_pts = date_Get( &p_sys->end_date );
+ p_block->i_length = date_Increment( &p_sys->end_date, frame.nb_samples )
+ - p_block->i_pts;
+ return p_block;
+
+end:
+ block_Release(p_block);
+ *pp_block = NULL;
+ return NULL;
}
/*****************************************************************************
*
*****************************************************************************/
-static void SetupOutputCodec( decoder_t *p_dec )
+
+vlc_fourcc_t GetVlcAudioFormat( int fmt )
+{
+ static const vlc_fourcc_t fcc[] = {
+ [AV_SAMPLE_FMT_U8] = VLC_CODEC_U8,
+ [AV_SAMPLE_FMT_S16] = VLC_CODEC_S16N,
+ [AV_SAMPLE_FMT_S32] = VLC_CODEC_S32N,
+ [AV_SAMPLE_FMT_FLT] = VLC_CODEC_FL32,
+ [AV_SAMPLE_FMT_DBL] = VLC_CODEC_FL64,
+ [AV_SAMPLE_FMT_U8P] = VLC_CODEC_U8,
+ [AV_SAMPLE_FMT_S16P] = VLC_CODEC_S16N,
+ [AV_SAMPLE_FMT_S32P] = VLC_CODEC_S32N,
+ [AV_SAMPLE_FMT_FLTP] = VLC_CODEC_FL32,
+ [AV_SAMPLE_FMT_DBLP] = VLC_CODEC_FL64,
+ };
+ if( (sizeof(fcc) / sizeof(fcc[0])) > (unsigned)fmt )
+ return fcc[fmt];
+ return VLC_CODEC_S16N;
+}
+
+static const uint64_t pi_channels_map[][2] =
+{
+ { AV_CH_FRONT_LEFT, AOUT_CHAN_LEFT },
+ { AV_CH_FRONT_RIGHT, AOUT_CHAN_RIGHT },
+ { AV_CH_FRONT_CENTER, AOUT_CHAN_CENTER },
+ { AV_CH_LOW_FREQUENCY, AOUT_CHAN_LFE },
+ { AV_CH_BACK_LEFT, AOUT_CHAN_REARLEFT },
+ { AV_CH_BACK_RIGHT, AOUT_CHAN_REARRIGHT },
+ { AV_CH_FRONT_LEFT_OF_CENTER, 0 },
+ { AV_CH_FRONT_RIGHT_OF_CENTER, 0 },
+ { AV_CH_BACK_CENTER, AOUT_CHAN_REARCENTER },
+ { AV_CH_SIDE_LEFT, AOUT_CHAN_MIDDLELEFT },
+ { AV_CH_SIDE_RIGHT, AOUT_CHAN_MIDDLERIGHT },
+ { AV_CH_TOP_CENTER, 0 },
+ { AV_CH_TOP_FRONT_LEFT, 0 },
+ { AV_CH_TOP_FRONT_CENTER, 0 },
+ { AV_CH_TOP_FRONT_RIGHT, 0 },
+ { AV_CH_TOP_BACK_LEFT, 0 },
+ { AV_CH_TOP_BACK_CENTER, 0 },
+ { AV_CH_TOP_BACK_RIGHT, 0 },
+ { AV_CH_STEREO_LEFT, 0 },
+ { AV_CH_STEREO_RIGHT, 0 },
+};
+
+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 )
- switch( p_sys->p_context->sample_fmt )
+ p_dec->fmt_out.i_codec = GetVlcAudioFormat( p_sys->p_context->sample_fmt );
+ p_dec->fmt_out.audio.i_format = p_dec->fmt_out.i_codec;
+ p_dec->fmt_out.audio.i_rate = p_sys->p_context->sample_rate;
+
+ /* */
+ if( p_sys->i_previous_channels == p_sys->p_context->channels &&
+ p_sys->i_previous_layout == p_sys->p_context->channel_layout )
+ return;
+ if( b_trust )
{
- case SAMPLE_FMT_U8:
- p_dec->fmt_out.i_codec = VLC_FOURCC('u','8',' ',' ');
- 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.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.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.audio.i_bitspersample = 64;
- break;
-
- case SAMPLE_FMT_S16:
- default:
- p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
- p_dec->fmt_out.audio.i_bitspersample = 16;
- break;
+ p_sys->i_previous_channels = p_sys->p_context->channels;
+ p_sys->i_previous_layout = p_sys->p_context->channel_layout;
}
-#else
- p_dec->fmt_out.i_codec = AOUT_FMT_S16_NE;
- p_dec->fmt_out.audio.i_bitspersample = 16;
-#endif
+
+ /* Specified order
+ * FIXME should we use fmt_in.audio.i_physical_channels or not ?
+ */
+ const unsigned i_order_max = 8 * sizeof(p_sys->p_context->channel_layout);
+ uint32_t pi_order_src[i_order_max];
+ int i_channels_src = 0;
+
+ 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
+ {
+ /* 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;
+ aout_FormatPrepare( &p_dec->fmt_out.audio );
}
+
projects / vlc / blobdiff