#include <vlc_plugin.h>
#include <vlc_demux.h>
#include <vlc_codec.h>
+#include <vlc_codecs.h>
#include <vlc_input.h>
+#include "../../codec/a52.h"
+
/*****************************************************************************
* Module descriptor
*****************************************************************************/
-static int Open ( vlc_object_t * );
-static void Close( vlc_object_t * );
+static int OpenAudio( vlc_object_t * );
+static int OpenVideo( vlc_object_t * );
+static void Close ( vlc_object_t * );
+
+#define FPS_TEXT N_("Frames per Second")
+#define FPS_LONGTEXT N_("This is the frame rate used as a fallback when " \
+ "playing MPEG video elementary streams.")
+
+vlc_module_begin ()
+ set_category( CAT_INPUT )
+ set_subcategory( SUBCAT_INPUT_DEMUX )
+ set_description( N_("MPEG-I/II/4 / A52 / DTS / MLP audio" ) )
+ set_capability( "demux", 155 )
+ set_callbacks( OpenAudio, Close )
+
+ add_shortcut( "mpga" )
+ add_shortcut( "mp3" )
+
+ add_shortcut( "m4a" )
+ add_shortcut( "mp4a" )
+ add_shortcut( "aac" )
-vlc_module_begin();
- set_category( CAT_INPUT );
- set_subcategory( SUBCAT_INPUT_DEMUX );
- set_description( N_("MPEG audio / MP3 demuxer" ) );
- set_capability( "demux", 100 );
- set_callbacks( Open, Close );
+ add_shortcut( "ac3" )
+ add_shortcut( "a52" )
- add_shortcut( "mpga" );
- add_shortcut( "mp3" );
+ add_shortcut( "eac3" )
- //add_shortcut( "ac3" );
- //add_shortcut( "a52" );
-vlc_module_end();
+ add_shortcut( "dts" )
+
+ add_shortcut( "mlp" )
+ add_shortcut( "thd" )
+
+ add_submodule()
+ set_description( N_("MPEG-4 video" ) )
+ set_capability( "demux", 0 )
+ set_callbacks( OpenVideo, Close )
+ add_float( "es-fps", 25, NULL, FPS_TEXT, FPS_LONGTEXT, false )
+
+ add_shortcut( "m4v" )
+ add_shortcut( "mp4v" )
+vlc_module_end ()
/*****************************************************************************
* Local prototypes
static int Demux ( demux_t * );
static int Control( demux_t *, int, va_list );
+typedef struct
+{
+ vlc_fourcc_t i_codec;
+ bool b_use_word;
+ const char *psz_name;
+ int (*pf_probe)( demux_t *p_demux, int64_t *pi_offset );
+ int (*pf_init)( demux_t *p_demux );
+} codec_t;
+
struct demux_sys_t
{
+ codec_t codec;
+
es_out_id_t *p_es;
bool b_start;
mtime_t i_time_offset;
int64_t i_bytes;
+ bool b_big_endian;
bool b_estimate_bitrate;
int i_bitrate_avg; /* extracted from Xing header */
int64_t i_stream_offset;
+ float f_fps;
+
/* Mpga specific */
struct
{
} xing;
};
-#define FCC_MPGA VLC_FOURCC( 'm', 'p', 'g', 'a' )
-
static int MpgaProbe( demux_t *p_demux, int64_t *pi_offset );
static int MpgaInit( demux_t *p_demux );
+static int AacProbe( demux_t *p_demux, int64_t *pi_offset );
+static int AacInit( demux_t *p_demux );
+
+static int EA52Probe( demux_t *p_demux, int64_t *pi_offset );
+static int A52Probe( demux_t *p_demux, int64_t *pi_offset );
+static int A52Init( demux_t *p_demux );
+
+static int DtsProbe( demux_t *p_demux, int64_t *pi_offset );
+static int DtsInit( demux_t *p_demux );
+
+static int MlpProbe( demux_t *p_demux, int64_t *pi_offset );
+static int MlpInit( demux_t *p_demux );
+
+static const codec_t p_codecs[] = {
+ { VLC_CODEC_MP4A, false, "mp4 audio", AacProbe, AacInit },
+ { VLC_CODEC_MPGA, false, "mpeg audio", MpgaProbe, MpgaInit },
+ { VLC_CODEC_A52, true, "a52 audio", A52Probe, A52Init },
+ { VLC_CODEC_EAC3, true, "eac3 audio", EA52Probe, A52Init },
+ { VLC_CODEC_DTS, false, "dts audio", DtsProbe, DtsInit },
+ { VLC_CODEC_TRUEHD, false, "mlp audio", MlpProbe, MlpInit },
+
+ { 0, false, NULL, NULL, NULL }
+};
+
+static int VideoInit( demux_t *p_demux );
+
+static const codec_t codec_m4v = {
+ VLC_CODEC_MP4V, false, "mp4 video", NULL, VideoInit
+};
+
/*****************************************************************************
- * Open: initializes demux structures
+ * OpenCommon: initializes demux structures
*****************************************************************************/
-static int Open( vlc_object_t * p_this )
+static int OpenCommon( demux_t *p_demux,
+ int i_cat, const codec_t *p_codec, int64_t i_bs_offset )
{
- demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys;
- int64_t i_offset;
-
- if( MpgaProbe( p_demux, &i_offset ) )
- return VLC_EGENERIC;
+ es_format_t fmt;
DEMUX_INIT_COMMON(); p_sys = p_demux->p_sys;
memset( p_sys, 0, sizeof( demux_sys_t ) );
+ p_sys->codec = *p_codec;
p_sys->p_es = NULL;
p_sys->b_start = true;
- p_sys->i_stream_offset = i_offset;
+ p_sys->i_stream_offset = i_bs_offset;
p_sys->b_estimate_bitrate = true;
p_sys->i_bitrate_avg = 0;
+ p_sys->b_big_endian = false;
+ p_sys->f_fps = var_InheritFloat( p_demux, "es-fps" );
if( stream_Seek( p_demux->s, p_sys->i_stream_offset ) )
{
return VLC_EGENERIC;
}
- if( MpgaInit( p_demux ) )
+ if( p_sys->codec.pf_init( p_demux ) )
{
free( p_sys );
return VLC_EGENERIC;
}
- /* Load the mpeg audio packetizer */
- INIT_APACKETIZER( p_sys->p_packetizer, 'm', 'p', 'g', 'a' );
- es_format_Init( &p_sys->p_packetizer->fmt_out, UNKNOWN_ES, 0 );
- LOAD_PACKETIZER_OR_FAIL( p_sys->p_packetizer, "mpga" );
+ msg_Dbg( p_demux, "detected format %4.4s", (const char*)&p_sys->codec.i_codec );
+ /* Load the audio packetizer */
+ es_format_Init( &fmt, i_cat, p_sys->codec.i_codec );
+ p_sys->p_packetizer = demux_PacketizerNew( p_demux, &fmt, p_sys->codec.psz_name );
+ if( !p_sys->p_packetizer )
+ {
+ free( p_sys );
+ return VLC_EGENERIC;
+ }
return VLC_SUCCESS;
}
+static int OpenAudio( vlc_object_t *p_this )
+{
+ demux_t *p_demux = (demux_t*)p_this;
+ for( int i = 0; p_codecs[i].i_codec != 0; i++ )
+ {
+ int64_t i_offset;
+ if( !p_codecs[i].pf_probe( p_demux, &i_offset ) )
+ return OpenCommon( p_demux, AUDIO_ES, &p_codecs[i], i_offset );
+ }
+ return VLC_EGENERIC;
+}
+static int OpenVideo( vlc_object_t *p_this )
+{
+ demux_t *p_demux = (demux_t*)p_this;
+ /* Only m4v is supported for the moment */
+ bool b_m4v_ext = demux_IsPathExtension( p_demux, ".m4v" );
+ bool b_m4v_forced = demux_IsForced( p_demux, "m4v" ) ||
+ demux_IsForced( p_demux, "mp4v" );
+ if( !b_m4v_ext && !b_m4v_forced )
+ return VLC_EGENERIC;
+
+ const uint8_t *p_peek;
+ if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
+ return VLC_EGENERIC;
+ if( p_peek[0] != 0x00 || p_peek[1] != 0x00 || p_peek[2] != 0x01 )
+ {
+ if( !b_m4v_forced)
+ return VLC_EGENERIC;
+ msg_Warn( p_demux,
+ "this doesn't look like an MPEG ES stream, continuing anyway" );
+ }
+ return OpenCommon( p_demux, VIDEO_ES, &codec_m4v, 0 );
+}
/*****************************************************************************
* Demux: reads and demuxes data packets
*****************************************************************************
demux_sys_t *p_sys = p_demux->p_sys;
block_t *p_block_in, *p_block_out;
+ if( p_sys->codec.b_use_word )
+ {
+ /* Make sure we are word aligned */
+ int64_t i_pos = stream_Tell( p_demux->s );
+ if( i_pos % 2 )
+ stream_Read( p_demux->s, NULL, 1 );
+ }
+
if( ( p_block_in = stream_Block( p_demux->s, p_sys->i_packet_size ) ) == NULL )
return 0;
- p_block_in->i_pts = p_block_in->i_dts = p_sys->b_start || p_sys->b_initial_sync_failed ? 1 : 0;
+ if( p_sys->codec.b_use_word && !p_sys->b_big_endian && p_block_in->i_buffer > 0 )
+ {
+ /* Convert to big endian */
+ swab( p_block_in->p_buffer, p_block_in->p_buffer, p_block_in->i_buffer );
+ }
+
+ p_block_in->i_pts = p_block_in->i_dts = p_sys->b_start || p_sys->b_initial_sync_failed ? VLC_TS_0 : VLC_TS_INVALID;
p_sys->b_initial_sync_failed = p_sys->b_start; /* Only try to resync once */
while( ( p_block_out = p_sys->p_packetizer->pf_packetize( p_sys->p_packetizer, &p_block_in ) ) )
if( p_sys->b_estimate_bitrate )
p_sys->i_bitrate_avg = p_sys->p_packetizer->fmt_out.i_bitrate;
}
-
- p_sys->i_pts = p_block_out->i_pts;
+ if( p_sys->p_packetizer->fmt_out.i_cat == VIDEO_ES )
+ {
+ if( p_block_out->i_pts <= VLC_TS_INVALID &&
+ p_block_out->i_dts <= VLC_TS_INVALID )
+ p_block_out->i_dts = VLC_TS_0 + p_sys->i_pts + 1000000 / p_sys->f_fps;
+ if( p_block_out->i_dts > VLC_TS_INVALID )
+ p_sys->i_pts = p_block_out->i_dts - VLC_TS_0;
+ }
+ else
+ {
+ p_sys->i_pts = p_block_out->i_pts - VLC_TS_0;
+ }
/* Re-estimate bitrate */
- if( p_sys->b_estimate_bitrate && p_sys->i_pts > 1 + INT64_C(500000) )
+ if( p_sys->b_estimate_bitrate && p_sys->i_pts > INT64_C(500000) )
p_sys->i_bitrate_avg = 8*INT64_C(1000000)*p_sys->i_bytes/(p_sys->i_pts-1);
p_sys->i_bytes += p_block_out->i_buffer;
/* Correct timestamp */
- p_block_out->i_pts += p_sys->i_time_offset;
- p_block_out->i_dts += p_sys->i_time_offset;
-
- es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block_out->i_dts );
+ if( p_block_out->i_pts > VLC_TS_INVALID )
+ {
+ p_block_out->i_pts += p_sys->i_time_offset;
+ }
+ if( p_block_out->i_dts > VLC_TS_INVALID )
+ {
+ p_block_out->i_dts += p_sys->i_time_offset;
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_block_out->i_dts );
+ }
es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
demux_t *p_demux = (demux_t*)p_this;
demux_sys_t *p_sys = p_demux->p_sys;
- DESTROY_PACKETIZER( p_sys->p_packetizer );
+ demux_PacketizerDestroy( p_sys->p_packetizer );
free( p_sys );
}
}
}
+/*****************************************************************************
+ * Wav header skipper
+ *****************************************************************************/
+#define WAV_PROBE_SIZE (512*1024)
+static int WavSkipHeader( demux_t *p_demux, int *pi_skip, const int pi_format[] )
+{
+ const uint8_t *p_peek;
+ int i_peek = 0;
+
+ /* */
+ *pi_skip = 0;
+
+ /* Check if we are dealing with a WAV file */
+ if( stream_Peek( p_demux->s, &p_peek, 12+8 ) != 12 + 8 )
+ return VLC_SUCCESS;
+
+ if( memcmp( p_peek, "RIFF", 4 ) || memcmp( &p_peek[8], "WAVE", 4 ) )
+ return VLC_SUCCESS;
+
+ /* Find the wave format header */
+ i_peek = 12 + 8;
+ while( memcmp( p_peek + i_peek - 8, "fmt ", 4 ) )
+ {
+ uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
+ if( i_len > WAV_PROBE_SIZE || i_peek + i_len > WAV_PROBE_SIZE )
+ return VLC_EGENERIC;
+
+ i_peek += i_len + 8;
+ if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
+ return VLC_EGENERIC;
+ }
+
+ /* Sanity check the wave format header */
+ uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
+ if( i_len > WAV_PROBE_SIZE )
+ return VLC_EGENERIC;
+
+ i_peek += i_len + 8;
+ if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
+ return VLC_EGENERIC;
+ const int i_format = GetWLE( p_peek + i_peek - i_len - 8 /* wFormatTag */ );
+ int i_format_idx;
+ for( i_format_idx = 0; pi_format[i_format_idx] != WAVE_FORMAT_UNKNOWN; i_format_idx++ )
+ {
+ if( i_format == pi_format[i_format_idx] )
+ break;
+ }
+ if( pi_format[i_format_idx] == WAVE_FORMAT_UNKNOWN )
+ return VLC_EGENERIC;
+
+ if( i_format == WAVE_FORMAT_PCM )
+ {
+ if( GetWLE( p_peek + i_peek - i_len - 6 /* nChannels */ ) != 2 )
+ return VLC_EGENERIC;
+ if( GetDWLE( p_peek + i_peek - i_len - 4 /* nSamplesPerSec */ ) !=
+ 44100 )
+ return VLC_EGENERIC;
+ }
+
+ /* Skip the wave header */
+ while( memcmp( p_peek + i_peek - 8, "data", 4 ) )
+ {
+ uint32_t i_len = GetDWLE( p_peek + i_peek - 4 );
+ if( i_len > WAV_PROBE_SIZE || i_peek + i_len > WAV_PROBE_SIZE )
+ return VLC_EGENERIC;
+
+ i_peek += i_len + 8;
+ if( stream_Peek( p_demux->s, &p_peek, i_peek ) != i_peek )
+ return VLC_EGENERIC;
+ }
+ *pi_skip = i_peek;
+ return VLC_SUCCESS;
+}
+
+static int GenericProbe( demux_t *p_demux, int64_t *pi_offset,
+ const char * ppsz_name[],
+ int (*pf_check)( const uint8_t *, int * ), int i_check_size,
+ const int pi_wav_format[] )
+{
+ bool b_forced_demux;
+
+ int64_t i_offset;
+ const uint8_t *p_peek;
+ int i_skip;
+
+ b_forced_demux = false;
+ for( int i = 0; ppsz_name[i] != NULL; i++ )
+ {
+ b_forced_demux |= demux_IsForced( p_demux, ppsz_name[i] );
+ }
+
+ i_offset = stream_Tell( p_demux->s );
+
+ if( WavSkipHeader( p_demux, &i_skip, pi_wav_format ) )
+ {
+ if( !b_forced_demux )
+ return VLC_EGENERIC;
+ }
+ const bool b_wav = i_skip > 0;
+
+ /* peek the begining
+ * It is common that wav files have some sort of garbage at the begining
+ * We will accept probing 0.5s of data in this case.
+ */
+ const int i_probe = i_skip + i_check_size + 8000 + ( b_wav ? (44000/2*2*2) : 0);
+ const int i_peek = stream_Peek( p_demux->s, &p_peek, i_probe );
+ if( i_peek < i_skip + i_check_size )
+ {
+ msg_Err( p_demux, "cannot peek" );
+ return VLC_EGENERIC;
+ }
+ for( ;; )
+ {
+ if( i_skip + i_check_size > i_peek )
+ {
+ if( !b_forced_demux )
+ return VLC_EGENERIC;
+ break;
+ }
+ int i_samples = 0;
+ int i_size = pf_check( &p_peek[i_skip], &i_samples );
+ if( i_size >= 0 )
+ {
+ if( i_size == 0 )
+ break;
+
+ /* If we have the frame size, check the next frame for
+ * extra robustness
+ * The second test is because some .wav have paddings
+ */
+ bool b_ok = false;
+ for( int t = 0; t < 1 + !!b_wav; t++ )
+ {
+ if( t == 1 )
+ i_size = i_samples * 2 * 2;
+ if( i_skip + i_check_size + i_size <= i_peek )
+ {
+ b_ok = pf_check( &p_peek[i_skip+i_size], NULL ) >= 0;
+ if( b_ok )
+ break;
+ }
+ }
+ if( b_ok )
+ break;
+ }
+ i_skip++;
+ if( !b_wav && !b_forced_demux )
+ return VLC_EGENERIC;
+ }
+
+ *pi_offset = i_offset + i_skip;
+ return VLC_SUCCESS;
+}
+
/*****************************************************************************
* Mpeg I/II Audio
*****************************************************************************/
-static int CheckSyncMpga( const uint8_t *p_peek )
+static int MpgaCheckSync( const uint8_t *p_peek )
{
uint32_t h = GetDWBE( p_peek );
static int MpgaProbe( demux_t *p_demux, int64_t *pi_offset )
{
+ const int pi_wav[] = { WAVE_FORMAT_MPEG, WAVE_FORMAT_MPEGLAYER3, WAVE_FORMAT_UNKNOWN };
bool b_forced;
bool b_forced_demux;
int64_t i_offset;
- const uint8_t *p_peek;
+ const uint8_t *p_peek;
+ int i_skip;
b_forced = demux_IsPathExtension( p_demux, ".mp3" );
b_forced_demux = demux_IsForced( p_demux, "mp3" ) ||
demux_IsForced( p_demux, "mpga" );
i_offset = stream_Tell( p_demux->s );
- if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 )
+
+ if( WavSkipHeader( p_demux, &i_skip, pi_wav ) )
+ {
+ if( !b_forced_demux )
+ return VLC_EGENERIC;
+
return VLC_EGENERIC;
+ }
- if( !CheckSyncMpga( p_peek ) )
+ if( stream_Peek( p_demux->s, &p_peek, i_skip + 4 ) < i_skip + 4 )
+ return VLC_EGENERIC;
+
+ if( !MpgaCheckSync( &p_peek[i_skip] ) )
{
bool b_ok = false;
int i_peek;
if( !b_forced_demux && !b_forced )
return VLC_EGENERIC;
- i_peek = stream_Peek( p_demux->s, &p_peek, 8096 );
- while( i_peek > 4 )
+ i_peek = stream_Peek( p_demux->s, &p_peek, i_skip + 8096 );
+ while( i_skip + 4 < i_peek )
{
- if( CheckSyncMpga( p_peek ) )
+ if( MpgaCheckSync( &p_peek[i_skip] ) )
{
b_ok = true;
break;
}
- p_peek += 1;
- i_peek -= 1;
- i_offset++;
+ i_skip++;
}
if( !b_ok && !b_forced_demux )
return VLC_EGENERIC;
}
- *pi_offset = i_offset;
+ *pi_offset = i_offset + i_skip;
return VLC_SUCCESS;
}
return VLC_SUCCESS;
const uint32_t header = GetDWBE( p_peek );
- if( !CheckSyncMpga( p_peek ) )
+ if( !MpgaCheckSync( p_peek ) )
return VLC_SUCCESS;
/* Xing header */
return VLC_SUCCESS;
}
+/*****************************************************************************
+ * AAC
+ *****************************************************************************/
+static int AacProbe( demux_t *p_demux, int64_t *pi_offset )
+{
+ bool b_forced;
+ bool b_forced_demux;
+
+ int64_t i_offset;
+ const uint8_t *p_peek;
+
+ b_forced = demux_IsPathExtension( p_demux, ".aac" ) ||
+ demux_IsPathExtension( p_demux, ".aacp" );
+ b_forced_demux = demux_IsForced( p_demux, "m4a" ) ||
+ demux_IsForced( p_demux, "aac" ) ||
+ demux_IsForced( p_demux, "mp4a" );
+
+ if( !b_forced_demux && !b_forced )
+ return VLC_EGENERIC;
+
+ i_offset = stream_Tell( p_demux->s );
+
+ /* peek the begining (10 is for adts header) */
+ if( stream_Peek( p_demux->s, &p_peek, 10 ) < 10 )
+ {
+ msg_Err( p_demux, "cannot peek" );
+ return VLC_EGENERIC;
+ }
+ if( !strncmp( (char *)p_peek, "ADIF", 4 ) )
+ {
+ msg_Err( p_demux, "ADIF file. Not yet supported. (Please report)" );
+ return VLC_EGENERIC;
+ }
+
+ *pi_offset = i_offset;
+ return VLC_SUCCESS;
+}
+static int AacInit( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ p_sys->i_packet_size = 4096;
+
+ return VLC_SUCCESS;
+}
+
+
+/*****************************************************************************
+ * A52
+ *****************************************************************************/
+static int A52CheckSync( const uint8_t *p_peek, bool *p_big_endian, int *pi_samples, bool b_eac3 )
+{
+ vlc_a52_header_t header;
+ uint8_t p_tmp[VLC_A52_HEADER_SIZE];
+
+ *p_big_endian = p_peek[0] == 0x0b && p_peek[1] == 0x77;
+ if( !*p_big_endian )
+ {
+ swab( p_peek, p_tmp, VLC_A52_HEADER_SIZE );
+ p_peek = p_tmp;
+ }
+
+ if( vlc_a52_header_Parse( &header, p_peek, VLC_A52_HEADER_SIZE ) )
+ return VLC_EGENERIC;
+
+ if( !header.b_eac3 != !b_eac3 )
+ return VLC_EGENERIC;
+ if( pi_samples )
+ *pi_samples = header.i_samples;
+ return header.i_size;
+}
+static int EA52CheckSyncProbe( const uint8_t *p_peek, int *pi_samples )
+{
+ bool b_dummy;
+ return A52CheckSync( p_peek, &b_dummy, pi_samples, true );
+}
+
+static int EA52Probe( demux_t *p_demux, int64_t *pi_offset )
+{
+ const char *ppsz_name[] = { "eac3", NULL };
+ const int pi_wav[] = { WAVE_FORMAT_PCM, WAVE_FORMAT_A52, WAVE_FORMAT_UNKNOWN };
+
+ return GenericProbe( p_demux, pi_offset, ppsz_name, EA52CheckSyncProbe, VLC_A52_HEADER_SIZE, pi_wav );
+}
+
+static int A52CheckSyncProbe( const uint8_t *p_peek, int *pi_samples )
+{
+ bool b_dummy;
+ return A52CheckSync( p_peek, &b_dummy, pi_samples, false );
+}
+
+static int A52Probe( demux_t *p_demux, int64_t *pi_offset )
+{
+ const char *ppsz_name[] = { "a52", "ac3", NULL };
+ const int pi_wav[] = { WAVE_FORMAT_PCM, WAVE_FORMAT_A52, WAVE_FORMAT_UNKNOWN };
+
+ return GenericProbe( p_demux, pi_offset, ppsz_name, A52CheckSyncProbe, VLC_A52_HEADER_SIZE, pi_wav );
+}
+
+static int A52Init( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ p_sys->b_big_endian = false;
+ p_sys->i_packet_size = 1024;
+
+ const uint8_t *p_peek;
+
+ /* peek the begining */
+ if( stream_Peek( p_demux->s, &p_peek, VLC_A52_HEADER_SIZE ) >= VLC_A52_HEADER_SIZE )
+ {
+ A52CheckSync( p_peek, &p_sys->b_big_endian, NULL, true );
+ }
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * DTS
+ *****************************************************************************/
+static int DtsCheckSync( const uint8_t *p_peek, int *pi_samples )
+{
+ /* TODO return frame size for robustness */
+
+ /* 14 bits, little endian version of the bitstream */
+ if( p_peek[0] == 0xff && p_peek[1] == 0x1f &&
+ p_peek[2] == 0x00 && p_peek[3] == 0xe8 &&
+ (p_peek[4] & 0xf0) == 0xf0 && p_peek[5] == 0x07 )
+ {
+ return 0;
+ }
+ /* 14 bits, big endian version of the bitstream */
+ else if( p_peek[0] == 0x1f && p_peek[1] == 0xff &&
+ p_peek[2] == 0xe8 && p_peek[3] == 0x00 &&
+ p_peek[4] == 0x07 && (p_peek[5] & 0xf0) == 0xf0)
+ {
+ return 0;
+ }
+ /* 16 bits, big endian version of the bitstream */
+ else if( p_peek[0] == 0x7f && p_peek[1] == 0xfe &&
+ p_peek[2] == 0x80 && p_peek[3] == 0x01 )
+ {
+ return 0;
+ }
+ /* 16 bits, little endian version of the bitstream */
+ else if( p_peek[0] == 0xfe && p_peek[1] == 0x7f &&
+ p_peek[2] == 0x01 && p_peek[3] == 0x80 )
+ {
+ return 0;
+ }
+
+ VLC_UNUSED(pi_samples);
+ return VLC_EGENERIC;
+}
+
+static int DtsProbe( demux_t *p_demux, int64_t *pi_offset )
+{
+ const char *ppsz_name[] = { "dts", NULL };
+ const int pi_wav[] = { WAVE_FORMAT_PCM, WAVE_FORMAT_DTS, WAVE_FORMAT_UNKNOWN };
+
+ return GenericProbe( p_demux, pi_offset, ppsz_name, DtsCheckSync, 11, pi_wav );
+}
+static int DtsInit( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ p_sys->i_packet_size = 16384;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * MLP
+ *****************************************************************************/
+static int MlpCheckSync( const uint8_t *p_peek, int *pi_samples )
+{
+ if( p_peek[4+0] != 0xf8 || p_peek[4+1] != 0x72 || p_peek[4+2] != 0x6f )
+ return -1;
+
+ if( p_peek[4+3] != 0xba && p_peek[4+3] != 0xbb )
+ return -1;
+
+ /* TODO checksum and real size for robustness */
+ VLC_UNUSED(pi_samples);
+ return 0;
+}
+static int MlpProbe( demux_t *p_demux, int64_t *pi_offset )
+{
+ const char *ppsz_name[] = { "mlp", "thd", NULL };
+ const int pi_wav[] = { WAVE_FORMAT_PCM, WAVE_FORMAT_UNKNOWN };
+
+ return GenericProbe( p_demux, pi_offset, ppsz_name, MlpCheckSync, 4+28+16*4, pi_wav );
+}
+static int MlpInit( demux_t *p_demux )
+
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ p_sys->i_packet_size = 4096;
+
+ return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Video
+ *****************************************************************************/
+static int VideoInit( demux_t *p_demux )
+{
+ demux_sys_t *p_sys = p_demux->p_sys;
+
+ p_sys->i_packet_size = 4096;
+
+ return VLC_SUCCESS;
+}
projects / vlc / blobdiff