Commit 1e1dbbe3 authored by François Cartegnie's avatar François Cartegnie 🤞

demux: mp4: split es setup

Split es setup so we only call dedicated setup per handler.
parent da609fc9
......@@ -192,7 +192,8 @@ EXTRA_LTLIBRARIES += libmkv_plugin.la
libmp4_plugin_la_SOURCES = demux/mp4/mp4.c demux/mp4/mp4.h \
demux/mp4/libmp4.c demux/mp4/libmp4.h \
demux/mp4/id3genres.h demux/mp4/languages.h \
demux/asf/asfpacket.c demux/asf/asfpacket.h
demux/asf/asfpacket.c demux/asf/asfpacket.h \
demux/mp4/essetup.c demus/mp4/essetup.h
libmp4_plugin_la_LIBADD = $(LIBM)
libmp4_plugin_la_LDFLAGS = $(AM_LDFLAGS)
if HAVE_ZLIB
......
/*****************************************************************************
* essetup.h: es setup from stsd and extensions parsing
*****************************************************************************
* Copyright (C) 2001-2004, 2010, 2014 VLC authors and VideoLAN
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* 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 Lesser General Public License for more details.
*
* 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.
*****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "mp4.h"
#include "essetup.h"
#include <vlc_demux.h>
#include <vlc_aout.h>
#include <assert.h>
static void SetupESDS( demux_t *p_demux, mp4_track_t *p_track, const MP4_descriptor_decoder_config_t *p_decconfig )
{
/* First update information based on i_objectTypeIndication */
switch( p_decconfig->i_objectProfileIndication )
{
case( 0x20 ): /* MPEG4 VIDEO */
p_track->fmt.i_codec = VLC_CODEC_MP4V;
break;
case( 0x21 ): /* H.264 */
p_track->fmt.i_codec = VLC_CODEC_H264;
break;
case( 0x40):
p_track->fmt.i_codec = VLC_CODEC_MP4A;
if( p_decconfig->i_decoder_specific_info_len >= 2 &&
p_decconfig->p_decoder_specific_info[0] == 0xF8 &&
(p_decconfig->p_decoder_specific_info[1]&0xE0) == 0x80 )
{
p_track->fmt.i_codec = VLC_CODEC_ALS;
}
break;
case( 0x60):
case( 0x61):
case( 0x62):
case( 0x63):
case( 0x64):
case( 0x65): /* MPEG2 video */
p_track->fmt.i_codec = VLC_CODEC_MPGV;
break;
/* Theses are MPEG2-AAC */
case( 0x66): /* main profile */
case( 0x67): /* Low complexity profile */
case( 0x68): /* Scaleable Sampling rate profile */
p_track->fmt.i_codec = VLC_CODEC_MP4A;
break;
/* True MPEG 2 audio */
case( 0x69):
p_track->fmt.i_codec = VLC_CODEC_MPGA;
break;
case( 0x6a): /* MPEG1 video */
p_track->fmt.i_codec = VLC_CODEC_MPGV;
break;
case( 0x6b): /* MPEG1 audio */
p_track->fmt.i_codec = VLC_CODEC_MPGA;
break;
case( 0x6c ): /* jpeg */
p_track->fmt.i_codec = VLC_CODEC_JPEG;
break;
case( 0x6d ): /* png */
p_track->fmt.i_codec = VLC_CODEC_PNG;
break;
case( 0x6e ): /* jpeg2000 */
p_track->fmt.i_codec = VLC_FOURCC( 'M','J','2','C' );
break;
case( 0xa3 ): /* vc1 */
p_track->fmt.i_codec = VLC_CODEC_VC1;
break;
case( 0xa4 ):
p_track->fmt.i_codec = VLC_CODEC_DIRAC;
break;
case( 0xa5 ):
p_track->fmt.i_codec = VLC_CODEC_A52;
break;
case( 0xa6 ):
p_track->fmt.i_codec = VLC_CODEC_EAC3;
break;
case( 0xa9 ): /* dts */
case( 0xaa ): /* DTS-HD HRA */
case( 0xab ): /* DTS-HD Master Audio */
p_track->fmt.i_codec = VLC_CODEC_DTS;
break;
case( 0xDD ):
p_track->fmt.i_codec = VLC_CODEC_VORBIS;
break;
/* Private ID */
case( 0xe0 ): /* NeroDigital: dvd subs */
if( p_track->fmt.i_cat == SPU_ES )
{
p_track->fmt.i_codec = VLC_CODEC_SPU;
if( p_track->i_width > 0 )
p_track->fmt.subs.spu.i_original_frame_width = p_track->i_width;
if( p_track->i_height > 0 )
p_track->fmt.subs.spu.i_original_frame_height = p_track->i_height;
break;
}
case( 0xe1 ): /* QCelp for 3gp */
if( p_track->fmt.i_cat == AUDIO_ES )
{
p_track->fmt.i_codec = VLC_CODEC_QCELP;
}
break;
/* Fallback */
default:
/* Unknown entry, but don't touch i_fourcc */
msg_Warn( p_demux,
"unknown objectProfileIndication(0x%x) (Track[ID 0x%x])",
p_decconfig->i_objectProfileIndication,
p_track->i_track_ID );
break;
}
p_track->fmt.i_extra = p_decconfig->i_decoder_specific_info_len;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
memcpy( p_track->fmt.p_extra, p_decconfig->p_decoder_specific_info,
p_track->fmt.i_extra );
}
if( p_track->fmt.i_codec == VLC_CODEC_SPU &&
p_track->fmt.i_extra >= 16 * 4 )
{
for( int i = 0; i < 16; i++ )
{
p_track->fmt.subs.spu.palette[1 + i] =
GetDWBE((char*)p_track->fmt.p_extra + i * 4);
}
p_track->fmt.subs.spu.palette[0] = 0xBeef;
}
}
int SetupVideoES( demux_t *p_demux, mp4_track_t *p_track, MP4_Box_t *p_sample )
{
MP4_Box_data_sample_vide_t *p_vide = p_sample->data.p_sample_vide;
p_track->fmt.video.i_width = p_vide->i_width;
p_track->fmt.video.i_height = p_vide->i_height;
p_track->fmt.video.i_bits_per_pixel = p_vide->i_depth;
/* fall on display size */
if( p_track->fmt.video.i_width <= 0 )
p_track->fmt.video.i_width = p_track->i_width;
if( p_track->fmt.video.i_height <= 0 )
p_track->fmt.video.i_height = p_track->i_height;
/* Find out apect ratio from display size */
if( p_track->i_width > 0 && p_track->i_height > 0 &&
/* Work-around buggy muxed files */
p_vide->i_width != p_track->i_width )
{
p_track->fmt.video.i_sar_num = p_track->i_width * p_track->fmt.video.i_height;
p_track->fmt.video.i_sar_den = p_track->i_height * p_track->fmt.video.i_width;
}
/* Support for cropping (eg. in H263 files) */
p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
p_track->fmt.video.i_visible_height = p_track->fmt.video.i_height;
/* Rotation */
switch( (int)p_track->f_rotation ) {
case 90:
p_track->fmt.video.orientation = ORIENT_ROTATED_90;
break;
case 180:
p_track->fmt.video.orientation = ORIENT_ROTATED_180;
break;
case 270:
p_track->fmt.video.orientation = ORIENT_ROTATED_270;
break;
}
/* It's a little ugly but .. there are special cases */
switch( p_sample->i_type )
{
case( VLC_FOURCC( 's', '2', '6', '3' ) ):
p_track->fmt.i_codec = VLC_CODEC_H263;
break;
case VLC_FOURCC('y','v','1','2'):
p_track->fmt.i_codec = VLC_CODEC_YV12;
break;
case VLC_FOURCC('y','u','v','2'):
p_track->fmt.i_codec = VLC_FOURCC('Y','U','Y','2');
break;
default:
p_track->fmt.i_codec = p_sample->i_type;
break;
}
/* Read extensions */
/* Set up A/R from extension atom */
const MP4_Box_t *p_pasp = MP4_BoxGet( p_sample, "pasp" );
if( p_pasp && BOXDATA(p_pasp) && BOXDATA(p_pasp)->i_horizontal_spacing > 0 &&
BOXDATA(p_pasp)->i_vertical_spacing > 0 )
{
p_track->fmt.video.i_sar_num = BOXDATA(p_pasp)->i_horizontal_spacing;
p_track->fmt.video.i_sar_den = BOXDATA(p_pasp)->i_vertical_spacing;
}
/* now see if esds is present and if so create a data packet
with decoder_specific_info */
MP4_Box_t *p_esds = MP4_BoxGet( p_sample, "esds" );
if ( p_esds && BOXDATA(p_esds) && BOXDATA(p_esds)->es_descriptor.p_decConfigDescr )
{
assert(p_sample->i_type == ATOM_mp4v);
SetupESDS( p_demux, p_track, BOXDATA(p_esds)->es_descriptor.p_decConfigDescr );
}
else switch( p_sample->i_type )
{
/* qt decoder, send the complete chunk */
case VLC_FOURCC ('h', 'd', 'v', '1'): // HDV 720p30
case VLC_FOURCC ('h', 'd', 'v', '2'): // HDV 1080i60
case VLC_FOURCC ('h', 'd', 'v', '3'): // HDV 1080i50
case VLC_FOURCC ('h', 'd', 'v', '5'): // HDV 720p25
case VLC_FOURCC ('m', 'x', '5', 'n'): // MPEG2 IMX NTSC 525/60 50mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '5', 'p'): // MPEG2 IMX PAL 625/60 50mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '4', 'n'): // MPEG2 IMX NTSC 525/60 40mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '4', 'p'): // MPEG2 IMX PAL 625/60 40mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '3', 'n'): // MPEG2 IMX NTSC 525/60 30mb/s produced by FCP
case VLC_FOURCC ('m', 'x', '3', 'p'): // MPEG2 IMX PAL 625/50 30mb/s produced by FCP
case VLC_FOURCC ('x', 'd', 'v', '2'): // XDCAM HD 1080i60
case VLC_FOURCC ('A', 'V', 'm', 'p'): // AVID IMX PAL
p_track->fmt.i_codec = VLC_CODEC_MPGV;
break;
/* qt decoder, send the complete chunk */
case VLC_CODEC_SVQ1:
case VLC_CODEC_SVQ3:
case VLC_FOURCC( 'V', 'P', '3', '1' ):
case VLC_FOURCC( '3', 'I', 'V', '1' ):
case VLC_FOURCC( 'Z', 'y', 'G', 'o' ):
{
p_track->fmt.i_extra =
p_sample->data.p_sample_vide->i_qt_image_description;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( p_track->fmt.i_extra );
memcpy( p_track->fmt.p_extra,
p_sample->data.p_sample_vide->p_qt_image_description,
p_track->fmt.i_extra);
}
break;
}
case VLC_FOURCC( 'v', 'c', '-', '1' ):
{
MP4_Box_t *p_dvc1 = MP4_BoxGet( p_sample, "dvc1" );
if( p_dvc1 && BOXDATA(p_dvc1) )
{
p_track->fmt.i_extra = BOXDATA(p_dvc1)->i_vc1;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( BOXDATA(p_dvc1)->i_vc1 );
memcpy( p_track->fmt.p_extra, BOXDATA(p_dvc1)->p_vc1,
p_track->fmt.i_extra );
}
}
else
{
msg_Err( p_demux, "missing dvc1" );
}
break;
}
/* avc1: send avcC (h264 without annexe B, ie without start code)*/
case VLC_FOURCC( 'a', 'v', 'c', '1' ):
{
MP4_Box_t *p_avcC = MP4_BoxGet( p_sample, "avcC" );
if( p_avcC && BOXDATA(p_avcC) )
{
p_track->fmt.i_extra = BOXDATA(p_avcC)->i_avcC;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( BOXDATA(p_avcC)->i_avcC );
memcpy( p_track->fmt.p_extra, BOXDATA(p_avcC)->p_avcC,
p_track->fmt.i_extra );
}
}
else
{
msg_Err( p_demux, "missing avcC" );
}
break;
}
case VLC_FOURCC( 'h', 'v', 'c', '1' ):
case VLC_FOURCC( 'h', 'e', 'v', '1' ):
{
MP4_Box_t *p_hvcC = MP4_BoxGet( p_sample, "hvcC" );
if( p_hvcC && BOXDATA(p_hvcC) )
{
p_track->fmt.i_extra = BOXDATA(p_hvcC)->i_hvcC;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( BOXDATA(p_hvcC)->i_hvcC );
memcpy( p_track->fmt.p_extra, BOXDATA(p_hvcC)->p_hvcC,
p_track->fmt.i_extra );
}
p_track->fmt.i_codec = VLC_CODEC_HEVC;
}
else
{
msg_Err( p_demux, "missing hvcC" );
}
break;
}
case ATOM_WMV3:
{
MP4_Box_t *p_strf = MP4_BoxGet( p_sample, "strf", 0 );
if ( p_strf && BOXDATA(p_strf) )
{
p_track->fmt.i_codec = VLC_CODEC_WMV3;
p_track->fmt.video.i_width = BOXDATA(p_strf)->bmiHeader.biWidth;
p_track->fmt.video.i_visible_width = p_track->fmt.video.i_width;
p_track->fmt.video.i_height = BOXDATA(p_strf)->bmiHeader.biHeight;
p_track->fmt.video.i_visible_height =p_track->fmt.video.i_height;
p_track->fmt.video.i_bits_per_pixel = BOXDATA(p_strf)->bmiHeader.biBitCount;
p_track->fmt.i_extra = BOXDATA(p_strf)->i_extra;
if( p_track->fmt.i_extra > 0 )
{
p_track->fmt.p_extra = malloc( BOXDATA(p_strf)->i_extra );
memcpy( p_track->fmt.p_extra, BOXDATA(p_strf)->p_extra,
p_track->fmt.i_extra );
}
p_track->p_asf = MP4_BoxGet( p_sample, "ASF " );
}
break;
}
default:
msg_Dbg( p_demux, "Unrecognized FourCC %4.4s", (char *)&p_sample->i_type );
break;
}
return 1;
}
int SetupAudioES( demux_t *p_demux, mp4_track_t *p_track, MP4_Box_t *p_sample )
{
MP4_Box_data_sample_soun_t *p_soun = p_sample->data.p_sample_soun;
p_track->fmt.audio.i_channels = p_soun->i_channelcount;
p_track->fmt.audio.i_rate = p_soun->i_sampleratehi;
p_track->fmt.i_bitrate = p_soun->i_channelcount * p_soun->i_sampleratehi *
p_soun->i_samplesize;
p_track->fmt.audio.i_bitspersample = p_soun->i_samplesize;
p_track->fmt.i_original_fourcc = p_sample->i_type;
if( ( p_track->i_sample_size == 1 || p_track->i_sample_size == 2 ) )
{
if( p_soun->i_qt_version == 0 )
{
switch( p_sample->i_type )
{
case VLC_CODEC_ADPCM_IMA_QT:
p_soun->i_qt_version = 1;
p_soun->i_sample_per_packet = 64;
p_soun->i_bytes_per_packet = 34;
p_soun->i_bytes_per_frame = 34 * p_soun->i_channelcount;
p_soun->i_bytes_per_sample = 2;
break;
case VLC_CODEC_MACE3:
p_soun->i_qt_version = 1;
p_soun->i_sample_per_packet = 6;
p_soun->i_bytes_per_packet = 2;
p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
p_soun->i_bytes_per_sample = 2;
break;
case VLC_CODEC_MACE6:
p_soun->i_qt_version = 1;
p_soun->i_sample_per_packet = 12;
p_soun->i_bytes_per_packet = 2;
p_soun->i_bytes_per_frame = 2 * p_soun->i_channelcount;
p_soun->i_bytes_per_sample = 2;
break;
case VLC_CODEC_ALAW:
case VLC_FOURCC( 'u', 'l', 'a', 'w' ):
p_soun->i_samplesize = 8;
p_track->i_sample_size = p_soun->i_channelcount;
break;
case VLC_FOURCC( 'N', 'O', 'N', 'E' ):
case VLC_FOURCC( 'r', 'a', 'w', ' ' ):
case VLC_FOURCC( 't', 'w', 'o', 's' ):
case VLC_FOURCC( 's', 'o', 'w', 't' ):
/* What would be the fun if you could trust the .mov */
p_track->i_sample_size = ((p_soun->i_samplesize+7)/8) * p_soun->i_channelcount;
break;
default:
p_track->fmt.i_codec = p_sample->i_type;
break;
}
}
else if( p_soun->i_qt_version == 1 && p_soun->i_sample_per_packet <= 0 )
{
p_soun->i_qt_version = 0;
}
}
else if( p_sample->data.p_sample_soun->i_qt_version == 1 )
{
switch( p_sample->i_type )
{
case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
{
if( p_track->i_sample_size > 1 )
p_soun->i_qt_version = 0;
break;
}
case( ATOM_ac3 ):
case( ATOM_eac3 ):
case( VLC_FOURCC( 'm', 's', 0x20, 0x00 ) ):
p_soun->i_qt_version = 0;
break;
default:
break;
}
}
if( p_track->i_sample_size != 0 && p_soun->i_qt_version == 1 &&
p_soun->i_sample_per_packet <= 0 )
{
msg_Err( p_demux, "Invalid sample per packet value for qt_version 1. Broken muxer!" );
p_soun->i_qt_version = 0;
}
/* Endianness atom */
const MP4_Box_t *p_enda = MP4_BoxGet( p_sample, "wave/enda" );
if( !p_enda )
p_enda = MP4_BoxGet( p_sample, "enda" );
/* It's a little ugly but .. there are special cases */
switch( p_sample->i_type )
{
case( VLC_FOURCC( '.', 'm', 'p', '3' ) ):
case( VLC_FOURCC( 'm', 's', 0x00, 0x55 ) ):
{
p_track->fmt.i_codec = VLC_CODEC_MPGA;
break;
}
case( ATOM_eac3 ):
{
const MP4_Box_t *p_dec3 = MP4_BoxGet( p_sample, "dec3", 0 );
p_track->fmt.i_codec = VLC_CODEC_EAC3;
if( p_dec3 && BOXDATA(p_dec3) )
{
p_track->fmt.audio.i_channels = 0;
p_track->fmt.i_bitrate = BOXDATA(p_dec3)->i_data_rate * 1000;
p_track->fmt.audio.i_bitspersample = 0;
}
break;
}
case( ATOM_ac3 ):
{
MP4_Box_t *p_dac3 = MP4_BoxGet( p_sample, "dac3", 0 );
p_track->fmt.i_codec = VLC_CODEC_A52;
if( p_dac3 && BOXDATA(p_dac3) )
{
static const int pi_bitrate[] = {
32, 40, 48, 56,
64, 80, 96, 112,
128, 160, 192, 224,
256, 320, 384, 448,
512, 576, 640,
};
p_track->fmt.audio.i_channels = 0;
p_track->fmt.i_bitrate = 0;
if( BOXDATA(p_dac3)->i_bitrate_code < sizeof(pi_bitrate)/sizeof(*pi_bitrate) )
p_track->fmt.i_bitrate = pi_bitrate[BOXDATA(p_dac3)->i_bitrate_code] * 1000;
p_track->fmt.audio.i_bitspersample = 0;
}
break;
}
case( VLC_FOURCC( 'r', 'a', 'w', ' ' ) ):
case( VLC_FOURCC( 'N', 'O', 'N', 'E' ) ):
{
if( (p_soun->i_samplesize+7)/8 == 1 )
p_track->fmt.i_codec = VLC_CODEC_U8;
else
p_track->fmt.i_codec = VLC_FOURCC( 't', 'w', 'o', 's' );
/* Buggy files workaround */
if( (p_track->i_timescale != p_soun->i_sampleratehi) )
{
msg_Warn( p_demux, "i_timescale (%"PRId32") != i_sampleratehi "
"(%u), making both equal (report any problem).",
p_track->i_timescale, p_soun->i_sampleratehi );
if( p_soun->i_sampleratehi != 0 )
p_track->i_timescale = p_soun->i_sampleratehi;
else
p_soun->i_sampleratehi = p_track->i_timescale;
}
break;
}
case VLC_FOURCC('i','n','2','4'):
p_track->fmt.i_codec = p_enda && BOXDATA(p_enda)->i_little_endian == 1 ?
VLC_FOURCC('4','2','n','i') : VLC_FOURCC('i','n','2','4');
break;
case VLC_FOURCC('i','n','3','2'):
p_track->fmt.i_codec = p_enda && BOXDATA(p_enda)->i_little_endian == 1 ?
VLC_CODEC_S32L : VLC_CODEC_S32B;
break;
case VLC_FOURCC('f','l','3','2'):
p_track->fmt.i_codec = p_enda && BOXDATA(p_enda)->i_little_endian == 1 ?
VLC_CODEC_F32L : VLC_CODEC_F32B;
break;
case VLC_FOURCC('f','l','6','4'):
p_track->fmt.i_codec = p_enda && BOXDATA(p_enda)->i_little_endian == 1 ?
VLC_CODEC_F64L : VLC_CODEC_F64B;
break;
case VLC_CODEC_DVD_LPCM:
{
if( p_soun->i_qt_version == 2 )
{
/* Flags:
* 0x01: IsFloat
* 0x02: IsBigEndian
* 0x04: IsSigned
*/
static const struct {
unsigned i_flags;
unsigned i_mask;
unsigned i_bits;
vlc_fourcc_t i_codec;
} p_formats[] = {
{ 0x01, 0x03, 32, VLC_CODEC_F32L },
{ 0x01, 0x03, 64, VLC_CODEC_F64L },
{ 0x01|0x02, 0x03, 32, VLC_CODEC_F32B },
{ 0x01|0x02, 0x03, 64, VLC_CODEC_F64B },
{ 0x00, 0x05, 8, VLC_CODEC_U8 },
{ 0x00| 0x04, 0x05, 8, VLC_CODEC_S8 },
{ 0x00, 0x07, 16, VLC_CODEC_U16L },
{ 0x00|0x02, 0x07, 16, VLC_CODEC_U16B },
{ 0x00 |0x04, 0x07, 16, VLC_CODEC_S16L },
{ 0x00|0x02|0x04, 0x07, 16, VLC_CODEC_S16B },
{ 0x00, 0x07, 24, VLC_CODEC_U24L },
{ 0x00|0x02, 0x07, 24, VLC_CODEC_U24B },
{ 0x00 |0x04, 0x07, 24, VLC_CODEC_S24L },
{ 0x00|0x02|0x04, 0x07, 24, VLC_CODEC_S24B },
{ 0x00, 0x07, 32, VLC_CODEC_U32L },
{ 0x00|0x02, 0x07, 32, VLC_CODEC_U32B },
{ 0x00 |0x04, 0x07, 32, VLC_CODEC_S32L },
{ 0x00|0x02|0x04, 0x07, 32, VLC_CODEC_S32B },
{0, 0, 0, 0}
};
for( int i = 0; p_formats[i].i_codec; i++ )
{
if( p_formats[i].i_bits == p_soun->i_constbitsperchannel &&
(p_soun->i_formatflags & p_formats[i].i_mask) == p_formats[i].i_flags )
{
p_track->fmt.i_codec = p_formats[i].i_codec;
p_track->fmt.audio.i_bitspersample = p_soun->i_constbitsperchannel;
p_track->fmt.audio.i_blockalign =
p_soun->i_channelcount * p_soun->i_constbitsperchannel / 8;
p_track->i_sample_size = p_track->fmt.audio.i_blockalign;
p_soun->i_qt_version = 0;
break;
}
}
}
break;
}
default:
p_track->fmt.i_codec = p_sample->i_type;
break;
}
/* Process extensions */
/* Lookup for then channels extension */
const MP4_Box_t *p_chan = MP4_BoxGet( p_sample, "chan" );
if ( p_chan )
{
if ( BOXDATA(p_chan)->layout.i_channels_layout_tag == MP4_CHAN_USE_CHANNELS_BITMAP )
{
uint32_t rgi_chans_sequence[AOUT_CHAN_MAX + 1];
uint16_t i_vlc_mapping = 0;
uint8_t i_channels = 0;
const uint32_t i_bitmap = BOXDATA(p_chan)->layout.i_channels_bitmap;
for (uint8_t i=0;i<MP4_CHAN_BITMAP_MAPPING_COUNT;i++)
{
if ( chan_bitmap_mapping[i].i_bitmap & i_bitmap )
{
i_channels++;
if ( (chan_bitmap_mapping[i].i_vlc & i_vlc_mapping) ||
i_channels > AOUT_CHAN_MAX )
{
/* double mapping or unsupported number of channels */
i_vlc_mapping = 0;
msg_Warn( p_demux, "discarding chan mapping" );
break;
}
i_vlc_mapping |= chan_bitmap_mapping[i].i_vlc;
rgi_chans_sequence[i_channels - 1] = chan_bitmap_mapping[i].i_vlc;
}
}
rgi_chans_sequence[i_channels] = 0;
p_track->b_chans_reorder = !!
aout_CheckChannelReorder( rgi_chans_sequence, NULL, i_vlc_mapping,
p_track->rgi_chans_reordering );
}
}
/* now see if esds is present and if so create a data packet
with decoder_specific_info */
MP4_Box_t *p_esds = MP4_BoxGet( p_sample, "esds" );
if ( !p_esds ) p_esds = MP4_BoxGet( p_sample, "wave/esds" );
if ( p_esds && BOXDATA(p_esds) && BOXDATA(p_esds)->es_descriptor.p_decConfigDescr )
{
assert(p_sample->i_type == ATOM_mp4a);
SetupESDS( p_demux, p_track, BOXDATA(p_esds)->es_descriptor.p_decConfigDescr );