* mp4.c : MP4 file input module for vlc
*****************************************************************************
* Copyright (C) 2001 VideoLAN
- * $Id: mp4.c,v 1.53 2004/01/18 06:33:21 fenrir Exp $
+ * $Id: mp4.c,v 1.54 2004/01/18 18:31:50 fenrir Exp $
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
/*****************************************************************************
* Declaration of local function
*****************************************************************************/
-static void MP4_TrackCreate ( input_thread_t *, track_data_mp4_t *, MP4_Box_t *);
-static void MP4_TrackDestroy( input_thread_t *, track_data_mp4_t * );
+static void MP4_TrackCreate ( input_thread_t *, mp4_track_t *, MP4_Box_t *);
+static void MP4_TrackDestroy( input_thread_t *, mp4_track_t * );
-static int MP4_TrackSelect ( input_thread_t *, track_data_mp4_t *, mtime_t );
-static void MP4_TrackUnselect(input_thread_t *, track_data_mp4_t * );
+static int MP4_TrackSelect ( input_thread_t *, mp4_track_t *, mtime_t );
+static void MP4_TrackUnselect(input_thread_t *, mp4_track_t * );
-static int MP4_TrackSeek ( input_thread_t *, track_data_mp4_t *, mtime_t );
+static int MP4_TrackSeek ( input_thread_t *, mp4_track_t *, mtime_t );
-static uint64_t MP4_GetTrackPos ( track_data_mp4_t * );
-static int MP4_TrackSampleSize( track_data_mp4_t * );
-static int MP4_TrackNextSample( input_thread_t *, track_data_mp4_t * );
+static uint64_t MP4_TrackGetPos ( mp4_track_t * );
+static int MP4_TrackSampleSize( mp4_track_t * );
+static int MP4_TrackNextSample( input_thread_t *, mp4_track_t * );
+
+/* Return time in µs of a track */
+static inline mtime_t MP4_TrackGetPTS( mp4_track_t *p_track )
+{
+ unsigned int i_sample;
+ unsigned int i_index;
+ uint64_t i_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] )
+ {
+ 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_index++;
+ }
+ else
+ {
+ i_dts += i_sample *
+ p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
+ i_sample = 0;
+ break;
+ }
+ }
+
+ return (int64_t)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;
+}
static char *LanguageGetName( const char *psz_code );
-#define FREE( p ) \
- if( p ) { free( p ); (p) = NULL;}
+#define FREE( p ) if( p ) { free( p ); (p) = NULL;}
/*****************************************************************************
* Open: check file and initializes MP4 structures
}
else
{
- msg_Err( p_input, "unknown ref type=%4.4s FIXME (send a bug report)", (char*)&p_rdrf->data.p_rdrf->i_ref_type );
+ msg_Err( p_input, "unknown ref type=%4.4s FIXME (send a bug report)",
+ (char*)&p_rdrf->data.p_rdrf->i_ref_type );
}
}
vlc_object_release( p_playlist );
/* allocate memory */
- p_sys->track = calloc( p_sys->i_tracks, sizeof( track_data_mp4_t ) );
- memset( p_sys->track, 0, p_sys->i_tracks * sizeof( track_data_mp4_t ) );
+ p_sys->track = calloc( p_sys->i_tracks, sizeof( mp4_track_t ) );
+ memset( p_sys->track, 0, p_sys->i_tracks * sizeof( mp4_track_t ) );
/* now process each track and extract all usefull informations */
for( i = 0; i < p_sys->i_tracks; i++ )
/* check for newly selected/unselected track */
for( i_track = 0, i_track_selected = 0; i_track < p_sys->i_tracks; i_track++ )
{
-#define track p_sys->track[i_track]
- if( track.b_selected && track.i_sample >= track.i_sample_count )
+ mp4_track_t *tk = &p_sys->track[i_track];
+
+ if( tk->b_selected && tk->i_sample >= tk->i_sample_count )
{
- msg_Warn( p_input, "track[0x%x] will be disabled", track.i_track_ID );
- MP4_TrackUnselect( p_input, &track );
+ msg_Warn( p_input, "track[0x%x] will be disabled", tk->i_track_ID );
+ MP4_TrackUnselect( p_input, tk);
}
- else if( track.b_ok )
+ else if( tk->b_ok )
{
vlc_bool_t b;
- es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, track.p_es, &b );
+ es_out_Control( p_input->p_es_out, ES_OUT_GET_ES_STATE, tk->p_es, &b );
- if( track.b_selected && !b )
+ if( tk->b_selected && !b )
{
- MP4_TrackUnselect( p_input, &track );
+ MP4_TrackUnselect( p_input, tk );
}
- else if( !track.b_selected && b)
+ else if( !tk->b_selected && b)
{
- MP4_TrackSelect( p_input, &track, MP4_GetMoviePTS( p_sys ) );
+ MP4_TrackSelect( p_input, tk, MP4_GetMoviePTS( p_sys ) );
}
- if( track.b_selected )
+ if( tk->b_selected )
{
i_track_selected++;
}
}
-#undef track
}
if( i_track_selected <= 0 )
{
msg_Warn( p_input, "no track selected, exiting..." );
- return( 0 );
+ return 0;
}
/* first wait for the good time to read a packet */
for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
{
-#define track p_sys->track[i_track]
- if( !track.b_ok ||
- !track.b_selected ||
- MP4_GetTrackPTS( &track ) >= MP4_GetMoviePTS( p_sys ) )
+ mp4_track_t *tk = &p_sys->track[i_track];
+
+ if( !tk->b_ok || !tk->b_selected )
{
continue;
}
- while( MP4_GetTrackPTS( &track ) < MP4_GetMoviePTS( p_sys ) )
+ while( MP4_TrackGetPTS( tk) < MP4_GetMoviePTS( p_sys ) )
{
-
- if( ( !b_play_audio && track.fmt.i_cat == AUDIO_ES ) ||
- MP4_TrackSampleSize( &track ) <= 0 )
- {
- if( MP4_TrackNextSample( p_input, &track ) )
- {
- break;
- }
- }
- else
+ if( MP4_TrackSampleSize( tk ) > 0 &&
+ ( b_play_audio || tk->fmt.i_cat != AUDIO_ES ) )
{
block_t *p_block;
/* go,go go ! */
- if( stream_Seek( p_input->s, MP4_GetTrackPos( &track ) ) )
+ if( stream_Seek( p_input->s, MP4_TrackGetPos( tk ) ) )
{
- msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
- MP4_TrackUnselect( p_input, &track );
+ msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
+ MP4_TrackUnselect( p_input, tk );
break;
}
/* now read pes */
if( ( p_block = stream_Block( p_input->s,
- MP4_TrackSampleSize( &track ) ) ) == NULL )
+ MP4_TrackSampleSize( tk ) ) ) == NULL )
{
- msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", track.i_track_ID );
- MP4_TrackUnselect( p_input, &track );
+ msg_Warn( p_input, "track[0x%x] will be disabled (eof?)", tk->i_track_ID );
+ MP4_TrackUnselect( p_input, tk );
break;
}
- if( track.b_drms && track.p_drms )
+ if( tk->b_drms && tk->p_drms )
{
- drms_decrypt( track.p_drms,
- (uint32_t *)p_block->p_buffer,
+ drms_decrypt( tk->p_drms,
+ (uint32_t*)p_block->p_buffer,
p_block->i_buffer );
}
+ p_block->i_dts =
+ input_ClockGetTS( p_input,
+ p_input->stream.p_selected_program,
+ MP4_TrackGetPTS( tk ) * 9/100 );
- if( track.fmt.i_cat == VIDEO_ES )
- {
- /* FIXME sometime we can calculate PTS */
- p_block->i_pts = 0;
- p_block->i_dts =
- input_ClockGetTS( p_input,
- p_input->stream.p_selected_program,
- MP4_GetTrackPTS( &track ) * 9/100 );
- }
- else
- {
- p_block->i_pts =
- p_block->i_dts =
- input_ClockGetTS( p_input,
- p_input->stream.p_selected_program,
- MP4_GetTrackPTS( &track ) * 9/100 );
- }
+ p_block->i_pts = tk->fmt.i_cat == VIDEO_ES ? 0 : p_block->i_dts;
- if( !track.b_drms || ( track.b_drms && track.p_drms ) )
+ if( !tk->b_drms || ( tk->b_drms && tk->p_drms ) )
{
- es_out_Send( p_input->p_es_out, track.p_es, p_block );
+ es_out_Send( p_input->p_es_out, tk->p_es, p_block );
}
+ }
- if( MP4_TrackNextSample( p_input, &track ) )
- {
- break;
- }
+ /* Next sample */
+ if( MP4_TrackNextSample( p_input, tk ) )
+ {
+ break;
}
}
-#undef track
}
- return( 1 );
+ return 1;
}
/*****************************************************************************
* Seek: Got to i_date
{
demux_sys_t *p_sys = p_input->p_demux_data;
unsigned int i_track;
+
/* First update update global time */
p_sys->i_time = i_date * p_sys->i_timescale / 1000000;
p_sys->i_pcr = i_date* 9 / 100;
/* Now for each stream try to go to this time */
for( i_track = 0; i_track < p_sys->i_tracks; i_track++ )
{
-#define track p_sys->track[i_track]
- if( track.b_ok && track.b_selected )
+ mp4_track_t *tk = &p_sys->track[i_track];
+
+ if( tk->b_ok && tk->b_selected )
{
- MP4_TrackSeek( p_input, &track, i_date );
+ MP4_TrackSeek( p_input, tk, i_date );
}
-#undef track
}
return( 1 );
}
/* now create basic chunk data, the rest will be filled by MP4_CreateSamplesIndex */
static int TrackCreateChunksIndex( input_thread_t *p_input,
- track_data_mp4_t *p_demux_track )
+ mp4_track_t *p_demux_track )
{
MP4_Box_t *p_co64; /* give offset for each chunk, same for stco and co64 */
MP4_Box_t *p_stsc;
return( VLC_EGENERIC );
}
p_demux_track->chunk = calloc( p_demux_track->i_chunk_count,
- sizeof( chunk_data_mp4_t ) );
+ sizeof( mp4_chunk_t ) );
/* first we read chunk offset */
for( i_chunk = 0; i_chunk < p_demux_track->i_chunk_count; i_chunk++ )
return( VLC_SUCCESS );
}
static int TrackCreateSamplesIndex( input_thread_t *p_input,
- track_data_mp4_t *p_demux_track )
+ mp4_track_t *p_demux_track )
{
MP4_Box_t *p_stts; /* makes mapping between sample and decoding time,
ctts make same mapping but for composition time,
* Create ES and PES to init decoder if needed, for a track starting at i_chunk
*/
static int TrackCreateES ( input_thread_t *p_input,
- track_data_mp4_t *p_track,
+ mp4_track_t *p_track,
unsigned int i_chunk,
es_out_id_t **pp_es )
{
/* given a time it return sample/chunk */
static int TrackTimeToSampleChunk( input_thread_t *p_input,
- track_data_mp4_t *p_track,
+ mp4_track_t *p_track,
uint64_t i_start,
uint32_t *pi_chunk,
uint32_t *pi_sample )
}
static int TrackGotoChunkSample( input_thread_t *p_input,
- track_data_mp4_t *p_track,
+ mp4_track_t *p_track,
unsigned int i_chunk,
unsigned int i_sample )
{
* If it succeed b_ok is set to 1 else to 0
****************************************************************************/
static void MP4_TrackCreate( input_thread_t *p_input,
- track_data_mp4_t *p_track,
+ mp4_track_t *p_track,
MP4_Box_t * p_box_trak )
{
MP4_Box_t *p_tkhd = MP4_BoxGet( p_box_trak, "tkhd" );
* Destroy a track created by MP4_TrackCreate.
****************************************************************************/
static void MP4_TrackDestroy( input_thread_t *p_input,
- track_data_mp4_t *p_track )
+ mp4_track_t *p_track )
{
unsigned int i_chunk;
}
static int MP4_TrackSelect ( input_thread_t *p_input,
- track_data_mp4_t *p_track,
+ mp4_track_t *p_track,
mtime_t i_start )
{
uint32_t i_chunk;
}
static void MP4_TrackUnselect(input_thread_t *p_input,
- track_data_mp4_t *p_track )
+ mp4_track_t *p_track )
{
if( !p_track->b_ok )
{
}
static int MP4_TrackSeek ( input_thread_t *p_input,
- track_data_mp4_t *p_track,
+ mp4_track_t *p_track,
mtime_t i_start )
{
uint32_t i_chunk;
-
-
/*
* 3 types: for audio
*
*/
#define QT_V0_MAX_SAMPLES 1500
-static int MP4_TrackSampleSize( track_data_mp4_t *p_track )
+static int MP4_TrackSampleSize( mp4_track_t *p_track )
{
int i_size;
MP4_Box_data_sample_soun_t *p_soun;
}
-static uint64_t MP4_GetTrackPos( track_data_mp4_t *p_track )
+static uint64_t MP4_TrackGetPos( mp4_track_t *p_track )
{
unsigned int i_sample;
uint64_t i_pos;
}
static int MP4_TrackNextSample( input_thread_t *p_input,
- track_data_mp4_t *p_track )
+ mp4_track_t *p_track )
{
if( p_track->fmt.i_cat == AUDIO_ES &&
* mp4.h : MP4 file input module for vlc
*****************************************************************************
* Copyright (C) 2001 VideoLAN
- * $Id: mp4.h,v 1.11 2004/01/09 04:37:43 jlj Exp $
+ * $Id: mp4.h,v 1.12 2004/01/18 18:31:50 fenrir Exp $
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
/*****************************************************************************
* Contain all information about a chunk
*****************************************************************************/
-typedef struct chunk_data_mp4_s
+typedef struct
{
uint64_t i_offset; /* absolute position of this chunk in the file */
uint32_t i_sample_description_index; /* index for SampleEntry to use */
/* TODO if needed add pts
but quickly *add* support for edts and seeking */
-} chunk_data_mp4_t;
+} mp4_chunk_t;
/*****************************************************************************
* Contain all needed information for read all track with vlc
*****************************************************************************/
-typedef struct track_data_mp4_s
+typedef struct
{
int i_track_ID; /* this should be unique */
uint32_t i_chunk_count;
uint32_t i_sample_count;
- chunk_data_mp4_t *chunk; /* always defined for each chunk */
+ mp4_chunk_t *chunk; /* always defined for each chunk */
/* sample size, p_sample_size defined only if i_sample_size == 0
else i_sample_size is size for all sample */
vlc_bool_t b_drms;
void *p_drms;
-} track_data_mp4_t;
+} mp4_track_t;
/*****************************************************************************
uint64_t i_timescale; /* movie time scale */
uint64_t i_duration; /* movie duration */
unsigned int i_tracks; /* number of tracks */
- track_data_mp4_t *track; /* array of track */
+ mp4_track_t *track; /* array of track */
};
-#if 0
-static inline uint64_t MP4_GetTrackPos( track_data_mp4_t *p_track )
-{
- unsigned int i_sample;
- uint64_t i_pos;
-
-
- i_pos = p_track->chunk[p_track->i_chunk].i_offset;
-
- if( p_track->i_sample_size )
- {
- i_pos += ( p_track->i_sample -
- p_track->chunk[p_track->i_chunk].i_sample_first ) *
- p_track->i_sample_size;
- }
- else
- {
- for( i_sample = p_track->chunk[p_track->i_chunk].i_sample_first;
- i_sample < p_track->i_sample; i_sample++ )
- {
- i_pos += p_track->p_sample_size[i_sample];
- }
-
- }
- return( i_pos );
-}
-#endif
-
-/* Return time in µs of a track */
-static inline mtime_t MP4_GetTrackPTS( track_data_mp4_t *p_track )
-{
- unsigned int i_sample;
- unsigned int i_index;
- uint64_t i_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] )
- {
- 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_index++;
- }
- else
- {
- i_dts += i_sample *
- p_track->chunk[p_track->i_chunk].p_sample_delta_dts[i_index];
- i_sample = 0;
- break;
- }
- }
- return( (mtime_t)(
- (mtime_t)1000000 *
- (mtime_t)i_dts /
- (mtime_t)p_track->i_timescale ) );
-}
-
-static inline mtime_t MP4_GetMoviePTS(demux_sys_t *p_demux )
-{
- return( (mtime_t)(
- (mtime_t)1000000 *
- (mtime_t)p_demux->i_time /
- (mtime_t)p_demux->i_timescale )
- );
-}
+
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