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vlc-1.1
Commit 02aeea03 authored by Gildas Bazin's avatar Gildas Bazin
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* modules/demux/mp4/mp4.c: avoid reading raw audio (or slightly compressed) a... 

* modules/demux/mp4/mp4.c: avoid reading raw audio (or slightly compressed) a sample at a time + coding style changes.
parent 321d5550
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Showing with 96 additions and 95 deletions
modules/demux/mp4/mp4.c
View file @ 02aeea03
......@@ -54,10 +54,7 @@ vlc_module_end();
* Local prototypes
*****************************************************************************/
static int Demux ( demux_t * );
static int DemuxRef( demux_t *p_demux )
{
return 0;
}
static int DemuxRef( demux_t *p_demux ){ return 0;}
static int Seek ( demux_t *, mtime_t );
static int Control ( demux_t *, int, va_list );
......@@ -82,7 +79,6 @@ typedef struct
} mp4_chunk_t;
/* Contain all needed information for read all track with vlc */
typedef struct
{
......@@ -147,7 +143,6 @@ struct demux_sys_t
mp4_track_t *track; /* array of track */
};
/*****************************************************************************
* Declaration of local function
*****************************************************************************/
......@@ -167,31 +162,31 @@ static void MP4_TrackSetELST( demux_t *, mp4_track_t *, int64_t );
/* Return time in s of a track */
static inline int64_t MP4_TrackGetPTS( demux_t *p_demux, mp4_track_t *p_track )
{
unsigned int i_sample;
unsigned int i_index;
int64_t i_dts;
#define chunk p_track->chunk[p_track->i_chunk]
unsigned int i_index = 0;
unsigned int i_sample = p_track->i_sample - chunk.i_sample_first;
int64_t i_dts = chunk.i_first_dts;
i_sample = p_track->i_sample - p_track->chunk[p_track->i_chunk].i_sample_first;
i_dts = p_track->chunk[p_track->i_chunk].i_first_dts;
i_index = 0;
while( i_sample > 0 )
{
if( i_sample > p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] )
if( i_sample > chunk.p_sample_count_dts[i_index] )
{
i_dts += p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index] *
p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
i_sample -= p_track->chunk[p_track->i_chunk].p_sample_count_dts[i_index];
i_dts += chunk.p_sample_count_dts[i_index] *
chunk.p_sample_delta_dts[i_index];
i_sample -= chunk.p_sample_count_dts[i_index];
i_index++;
}
else
{
i_dts += i_sample *
p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
i_dts += i_sample * chunk.p_sample_delta_dts[i_index];
i_sample = 0;
break;
}
}
#undef chunk
/* now handle elst */
if( p_track->p_elst )
{
......@@ -207,16 +202,18 @@ static inline int64_t MP4_TrackGetPTS( demux_t *p_demux, mp4_track_t *p_track )
}
/* add i_elst_time */
i_dts += p_track->i_elst_time * p_track->i_timescale / p_sys->i_timescale;
i_dts += p_track->i_elst_time * p_track->i_timescale /
p_sys->i_timescale;
if( i_dts < 0 ) i_dts = 0;
}
return (int64_t)1000000 * i_dts / p_track->i_timescale;
return I64C(1000000) * i_dts / p_track->i_timescale;
}
static inline int64_t MP4_GetMoviePTS(demux_sys_t *p_sys )
{
return (int64_t)1000000 * p_sys->i_time / p_sys->i_timescale;
return I64C(1000000) * p_sys->i_time / p_sys->i_timescale;
}
#define FREE( p ) if( p ) { free( p ); (p) = NULL;}
......@@ -503,14 +500,15 @@ static int Open( vlc_object_t * p_this )
}
msg_Dbg( p_demux, "adding track[Id 0x%x] %s (%s) language %s",
p_sys->track[i].i_track_ID,
psz_cat,
p_sys->track[i].i_track_ID, psz_cat,
p_sys->track[i].b_enable ? "enable":"disable",
p_sys->track[i].fmt.psz_language ? p_sys->track[i].fmt.psz_language : "undef" );
p_sys->track[i].fmt.psz_language ?
p_sys->track[i].fmt.psz_language : "undef" );
}
else
{
msg_Dbg( p_demux, "ignoring track[Id 0x%x]", p_sys->track[i].i_track_ID );
msg_Dbg( p_demux, "ignoring track[Id 0x%x]",
p_sys->track[i].i_track_ID );
}
}
......@@ -607,7 +605,7 @@ static int Demux( demux_t *p_demux )
while( MP4_TrackGetPTS( p_demux, tk ) < MP4_GetMoviePTS( p_sys ) )
{
#if 0
msg_Dbg( p_demux, "tk=%lld mv=%lld",
msg_Dbg( p_demux, "tk(%i)=%lld mv=%lld", i_track,
MP4_TrackGetPTS( p_demux, tk ),
MP4_GetMoviePTS( p_sys ) );
#endif
......@@ -619,29 +617,31 @@ static int Demux( demux_t *p_demux )
/* go,go go ! */
if( stream_Seek( p_demux->s, MP4_TrackGetPos( tk ) ) )
{
msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
tk->i_track_ID );
MP4_TrackUnselect( p_demux, tk );
break;
}
/* now read pes */
if( ( p_block = stream_Block( p_demux->s,
MP4_TrackSampleSize( tk ) ) ) == NULL )
if( !(p_block =
stream_Block( p_demux->s, MP4_TrackSampleSize(tk) )) )
{
msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
msg_Warn( p_demux, "track[0x%x] will be disabled (eof?)",
tk->i_track_ID );
MP4_TrackUnselect( p_demux, tk );
break;
}
if( tk->b_drms && tk->p_drms )
{
drms_decrypt( tk->p_drms,
(uint32_t*)p_block->p_buffer,
drms_decrypt( tk->p_drms, (uint32_t*)p_block->p_buffer,
p_block->i_buffer );
}
else if( tk->fmt.i_cat == SPU_ES )
{
if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) && p_block->i_buffer >= 2 )
if( tk->fmt.i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) &&
p_block->i_buffer >= 2 )
{
uint16_t i_size = GetWBE( p_block->p_buffer );
......@@ -649,7 +649,8 @@ static int Demux( demux_t *p_demux )
{
char *p;
/* remove the length field, and append a '\0' */
memmove( &p_block->p_buffer[0], &p_block->p_buffer[2], i_size );
memmove( &p_block->p_buffer[0],
&p_block->p_buffer[2], i_size );
p_block->p_buffer[i_size] = '\0';
p_block->i_buffer = i_size + 1;
......@@ -668,7 +669,8 @@ static int Demux( demux_t *p_demux )
}
p_block->i_dts = MP4_TrackGetPTS( p_demux, tk ) + 1;
p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ? 0 : p_block->i_dts + 1;
p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ?
0 : p_block->i_dts + 1;
if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
{
......@@ -929,9 +931,8 @@ static int TrackCreateChunksIndex( demux_t *p_demux,
return( VLC_EGENERIC );
}
while( i_index )
while( i_index-- )
{
i_index--;
for( i_chunk = p_stsc->data.p_stsc->i_first_chunk[i_index] - 1;
i_chunk < i_last; i_chunk++ )
{
......@@ -951,13 +952,12 @@ static int TrackCreateChunksIndex( demux_t *p_demux,
p_demux_track->chunk[i_chunk-1].i_sample_count;
}
msg_Dbg( p_demux,
"track[Id 0x%x] read %d chunk",
p_demux_track->i_track_ID,
p_demux_track->i_chunk_count );
msg_Dbg( p_demux, "track[Id 0x%x] read %d chunk",
p_demux_track->i_track_ID, p_demux_track->i_chunk_count );
return( VLC_SUCCESS );
return VLC_SUCCESS;
}
static int TrackCreateSamplesIndex( demux_t *p_demux,
mp4_track_t *p_demux_track )
{
......@@ -1009,36 +1009,37 @@ static int TrackCreateSamplesIndex( demux_t *p_demux,
p_stsz->data.p_stsz->i_entry_size[i_sample];
}
}
/* we have extract all information from stsz,
now use stts */
/* we have extracted all the information from stsz, now use stts */
/* if we don't want to waste too much memory, we can't expand
the box !, so each chunk will contain an "extract" of this table
the box! so each chunk will contain an "extract" of this table
for fast research */
i_last_dts = 0;
i_index = 0; i_index_sample_used =0;
i_index = 0; i_index_sample_used = 0;
/* create and init last data for each chunk */
for(i_chunk = 0 ; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
{
int64_t i_entry, i_sample_count, i;
/* save last dts */
p_demux_track->chunk[i_chunk].i_first_dts = i_last_dts;
/* count how many entries needed for this chunk
for p_sample_delta_dts and p_sample_count_dts */
/* count how many entries are needed for this chunk
* for p_sample_delta_dts and p_sample_count_dts */
i_sample_count = p_demux_track->chunk[i_chunk].i_sample_count;
i_entry = 0;
while( i_sample_count > 0 )
{
i_sample_count -= p_stts->data.p_stts->i_sample_count[i_index+i_entry];
i_sample_count -=
p_stts->data.p_stts->i_sample_count[i_index+i_entry];
if( i_entry == 0 )
{
i_sample_count += i_index_sample_used; /* don't count already used sample
int this entry */
/* don't count already used sample in this entry */
i_sample_count += i_index_sample_used;
}
i_entry++;
}
......@@ -1056,7 +1057,8 @@ static int TrackCreateSamplesIndex( demux_t *p_demux,
int64_t i_used;
int64_t i_rest;
i_rest = p_stts->data.p_stts->i_sample_count[i_index] - i_index_sample_used;
i_rest = p_stts->data.p_stts->i_sample_count[i_index] -
i_index_sample_used;
i_used = __MIN( i_rest, i_sample_count );
......@@ -1074,20 +1076,17 @@ static int TrackCreateSamplesIndex( demux_t *p_demux,
if( i_index_sample_used >=
p_stts->data.p_stts->i_sample_count[i_index] )
{
i_index++;
i_index_sample_used = 0;
}
}
}
msg_Dbg( p_demux, "track[Id 0x%x] read %d samples length:"I64Fd"s",
p_demux_track->i_track_ID,
p_demux_track->i_sample_count,
p_demux_track->i_track_ID, p_demux_track->i_sample_count,
i_last_dts / p_demux_track->i_timescale );
return( VLC_SUCCESS );
return VLC_SUCCESS;
}
/*
......@@ -1104,8 +1103,7 @@ static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
if( !p_track->chunk[i_chunk].i_sample_description_index )
{
msg_Warn( p_demux,
"invalid SampleEntry index (track[Id 0x%x])",
msg_Warn( p_demux, "invalid SampleEntry index (track[Id 0x%x])",
p_track->i_track_ID );
return VLC_EGENERIC;
}
......@@ -1113,12 +1111,12 @@ static int TrackCreateES( demux_t *p_demux, mp4_track_t *p_track,
p_sample = MP4_BoxGet( p_track->p_stsd, "[%d]",
p_track->chunk[i_chunk].i_sample_description_index - 1 );
if( !p_sample || ( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
if( !p_sample ||
( !p_sample->data.p_data && p_track->fmt.i_cat != SPU_ES ) )
{
msg_Warn( p_demux,
"cannot find SampleEntry (track[Id 0x%x])",
msg_Warn( p_demux, "cannot find SampleEntry (track[Id 0x%x])",
p_track->i_track_ID );
return( VLC_EGENERIC );
return VLC_EGENERIC;
}
p_track->p_sample = p_sample;
......@@ -1690,8 +1688,8 @@ static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
msg_Warn( p_demux, "elst box found" );
for( i = 0; i < elst->i_entry_count; i++ )
{
msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd"ms) rate=%d.%d",
i,
msg_Dbg( p_demux, " - [%d] duration="I64Fd"ms media time="I64Fd
"ms) rate=%d.%d", i,
elst->i_segment_duration[i] * 1000 / p_sys->i_timescale,
elst->i_media_time[i] >= 0 ?
elst->i_media_time[i] * 1000 / p_track->i_timescale : -1,
......@@ -1732,7 +1730,8 @@ static void MP4_TrackCreate( demux_t *p_demux, mp4_track_t *p_track,
switch( p_0xa9xxx->i_type )
{
case FOURCC_0xa9nam:
p_track->fmt.psz_description = strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
p_track->fmt.psz_description =
strdup( p_0xa9xxx->data.p_0xa9xxx->psz_text );
break;
}
}
......@@ -1906,7 +1905,7 @@ static int MP4_TrackSeek( demux_t *p_demux, mp4_track_t *p_track,
* 3 types: for audio
*
*/
#define QT_V0_MAX_SAMPLES 1500
#define QT_V0_MAX_SAMPLES 1024
static int MP4_TrackSampleSize( mp4_track_t *p_track )
{
int i_size;
......@@ -1922,12 +1921,6 @@ static int MP4_TrackSampleSize( mp4_track_t *p_track )
return p_track->i_sample_size;
}
if( p_track->i_sample_size != 1 )
{
//msg_Warn( p_demux, "SampleSize != 1" );
return p_track->i_sample_size;
}
p_soun = p_track->p_sample->data.p_sample_soun;
if( p_soun->i_qt_version == 1 )
......@@ -1935,15 +1928,21 @@ static int MP4_TrackSampleSize( mp4_track_t *p_track )
i_size = p_track->chunk[p_track->i_chunk].i_sample_count /
p_soun->i_sample_per_packet * p_soun->i_bytes_per_frame;
}
else if( p_track->i_sample_size > 256 )
{
/* We do that so we don't read too much data
* (in this case we are likely dealing with compressed data) */
i_size = p_track->i_sample_size;
}
else
{
/* FIXME */
/* Read a bunch of samples at once */
int i_samples = p_track->chunk[p_track->i_chunk].i_sample_count -
( p_track->i_sample -
p_track->chunk[p_track->i_chunk].i_sample_first );
if( i_samples > QT_V0_MAX_SAMPLES ) i_samples = QT_V0_MAX_SAMPLES;
i_size = i_samples * p_soun->i_channelcount * p_soun->i_samplesize / 8;
i_samples = __MIN( QT_V0_MAX_SAMPLES, i_samples );
i_size = i_samples * p_track->i_sample_size;
}
//fprintf( stderr, "size=%d\n", i_size );
......@@ -1988,30 +1987,32 @@ static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
static int MP4_TrackNextSample( demux_t *p_demux, mp4_track_t *p_track )
{
if( p_track->fmt.i_cat == AUDIO_ES &&
p_track->i_sample_size != 0 )
if( p_track->fmt.i_cat == AUDIO_ES && p_track->i_sample_size != 0 )
{
MP4_Box_data_sample_soun_t *p_soun;
p_soun = p_track->p_sample->data.p_sample_soun;
if( p_track->i_sample_size != 1 )
{
p_track->i_sample += 1;
}
else if( p_soun->i_qt_version == 1 )
if( p_soun->i_qt_version == 1 )
{
/* chunk by chunk */
p_track->i_sample =
p_track->chunk[p_track->i_chunk].i_sample_first +
p_track->chunk[p_track->i_chunk].i_sample_count;
}
else if( p_track->i_sample_size > 256 )
{
/* We do that so we don't read too much data
* (in this case we are likely dealing with compressed data) */
p_track->i_sample += 1;
}
else
{
/* FIXME */
p_track->i_sample += QT_V0_MAX_SAMPLES;
if( p_track->i_sample > p_track->chunk[p_track->i_chunk].i_sample_first + p_track->chunk[p_track->i_chunk].i_sample_count )
if( p_track->i_sample >
p_track->chunk[p_track->i_chunk].i_sample_first +
p_track->chunk[p_track->i_chunk].i_sample_count )
{
p_track->i_sample =
p_track->chunk[p_track->i_chunk].i_sample_first +
......
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