mpeg4audio.c File Reference

Include dependency graph for mpeg4audio.c:


Data Structures

struct  mpeg4_cfg_t
struct  latm_stream_t
struct  latm_mux_t
struct  decoder_sys_t

Defines

#define LATM_MAX_EXTRA_SIZE   64
#define LATM_MAX_LAYER   (8)
#define LATM_MAX_PROGRAM   (16)
#define ADTS_HEADER_SIZE   9
#define LOAS_HEADER_SIZE   3

Enumerations

enum  {
  STATE_NOSYNC, STATE_SYNC, STATE_HEADER, STATE_NEXT_SYNC,
  STATE_GET_DATA, STATE_SEND_DATA
}
enum  { TYPE_NONE, TYPE_RAW, TYPE_ADTS, TYPE_LOAS }

Functions

static int OpenPacketizer (vlc_object_t *)
static void ClosePacketizer (vlc_object_t *)
static block_t * PacketizeRawBlock (decoder_t *, block_t **)
static block_t * PacketizeStreamBlock (decoder_t *, block_t **)
int vlc_entry__main (module_t *p_module)
const char * vlc_entry_license__main (void)
static int ADTSSyncInfo (decoder_t *p_dec, const uint8_t *p_buf, unsigned int *pi_channels, unsigned int *pi_sample_rate, unsigned int *pi_frame_length, unsigned int *pi_header_size)
static int LOASSyncInfo (uint8_t p_header[3], unsigned int *pi_header_size)
static int Mpeg4GAProgramConfigElement (bs_t *s)
static int Mpeg4GASpecificConfig (mpeg4_cfg_t *p_cfg, bs_t *s)
static int Mpeg4ReadAudioObjectType (bs_t *s)
static int Mpeg4ReadAudioSamplerate (bs_t *s)
static int Mpeg4ReadAudioSpecificInfo (mpeg4_cfg_t *p_cfg, int *pi_extra, uint8_t *p_extra, bs_t *s, int i_max_size)
static int LatmGetValue (bs_t *s)
static int LatmReadStreamMuxConfiguration (latm_mux_t *m, bs_t *s)
static int LOASParse (decoder_t *p_dec, uint8_t *p_buffer, int i_buffer)
static void SetupOutput (decoder_t *p_dec, block_t *p_block)

Variables

static const int pi_sample_rates [16]

Define Documentation

#define ADTS_HEADER_SIZE   9

#define LATM_MAX_EXTRA_SIZE   64

Referenced by Mpeg4ReadAudioSpecificInfo().

#define LATM_MAX_LAYER   (8)

Referenced by LOASParse().

#define LATM_MAX_PROGRAM   (16)

Referenced by LOASParse().

#define LOAS_HEADER_SIZE   3

Referenced by PacketizeStreamBlock().

Enumeration Type Documentation

anonymous enum

Enumerator:
STATE_NOSYNC 
STATE_SYNC 
STATE_HEADER 
STATE_NEXT_SYNC 
STATE_GET_DATA 
STATE_SEND_DATA 

anonymous enum

Enumerator:
TYPE_NONE 
TYPE_RAW 
TYPE_ADTS 
TYPE_LOAS 

Function Documentation

static int ADTSSyncInfo ( decoder_t *  p_dec,
const uint8_t *  p_buf,
unsigned int *  pi_channels,
unsigned int *  pi_sample_rate,
unsigned int *  pi_frame_length,
unsigned int *  pi_header_size 
) [static]

References decoder_t::fmt_out, i, es_format_t::i_extra, msg_Err, msg_Warn, es_format_t::p_extra, and pi_sample_rates.

Referenced by PacketizeStreamBlock().

static void ClosePacketizer ( vlc_object_t *  p_this  )  [static]

References block_BytestreamRelease(), decoder_sys_t::bytestream, decoder_t::p_sys, and p_sys.

static int LatmGetValue ( bs_t *  s  )  [static]

References bs_read(), and i.

Referenced by LatmReadStreamMuxConfiguration().

static int LatmReadStreamMuxConfiguration ( latm_mux_t *  m,
bs_t *  s 
) [static]

References latm_mux_t::b_same_time_framing, bs_read(), bs_read1(), bs_skip(), latm_stream_t::cfg, latm_stream_t::extra, latm_mux_t::i_crc, latm_stream_t::i_extra, latm_stream_t::i_frame_length, latm_stream_t::i_frame_length_index, latm_stream_t::i_frame_length_type, latm_stream_t::i_layer, mpeg4_cfg_t::i_object_type, latm_mux_t::i_other_data, latm_stream_t::i_program, latm_mux_t::i_programs, latm_mux_t::i_streams, latm_mux_t::i_sub_frames, LatmGetValue(), Mpeg4ReadAudioSpecificInfo(), latm_mux_t::pi_layers, latm_mux_t::pi_stream, and latm_mux_t::stream.

Referenced by LOASParse().

static int LOASParse ( decoder_t *  p_dec,
uint8_t *  p_buffer,
int  i_buffer 
) [static]

References decoder_sys_t::b_latm_cfg, latm_mux_t::b_same_time_framing, bs_align(), bs_init(), bs_read(), bs_read1(), bs_skip(), latm_stream_t::cfg, latm_stream_t::extra, decoder_t::fmt_out, i, mpeg4_cfg_t::i_channel, decoder_sys_t::i_channels, latm_stream_t::i_extra, es_format_t::i_extra, latm_stream_t::i_frame_length, mpeg4_cfg_t::i_frame_length, decoder_sys_t::i_frame_length, latm_stream_t::i_frame_length_type, latm_stream_t::i_layer, latm_mux_t::i_other_data, latm_stream_t::i_program, latm_mux_t::i_programs, decoder_sys_t::i_rate, mpeg4_cfg_t::i_samplerate, latm_mux_t::i_streams, latm_mux_t::i_sub_frames, decoder_sys_t::latm, LATM_MAX_LAYER, LATM_MAX_PROGRAM, LatmReadStreamMuxConfiguration(), msg_Err, es_format_t::p_extra, decoder_t::p_sys, p_sys, latm_mux_t::pi_layers, latm_mux_t::pi_stream, and latm_mux_t::stream.

Referenced by PacketizeStreamBlock().

static int LOASSyncInfo ( uint8_t  p_header[3],
unsigned int *  pi_header_size 
) [static]

Referenced by PacketizeStreamBlock().

static int Mpeg4GAProgramConfigElement ( bs_t *  s  )  [static]

References bs_align(), bs_read(), bs_read1(), bs_skip(), and i_tag.

Referenced by Mpeg4GASpecificConfig().

static int Mpeg4GASpecificConfig ( mpeg4_cfg_t *  p_cfg,
bs_t *  s 
) [static]

References bs_read1(), bs_skip(), mpeg4_cfg_t::i_channel, mpeg4_cfg_t::i_frame_length, mpeg4_cfg_t::i_object_type, and Mpeg4GAProgramConfigElement().

Referenced by Mpeg4ReadAudioSpecificInfo().

static int Mpeg4ReadAudioObjectType ( bs_t *  s  )  [static]

References bs_read(), and i_type.

Referenced by Mpeg4ReadAudioSpecificInfo().

static int Mpeg4ReadAudioSamplerate ( bs_t *  s  )  [static]

References bs_read(), and pi_sample_rates.

Referenced by Mpeg4ReadAudioSpecificInfo().

static int Mpeg4ReadAudioSpecificInfo ( mpeg4_cfg_t *  p_cfg,
int *  pi_extra,
uint8_t *  p_extra,
bs_t *  s,
int  i_max_size 
) [static]

References __MIN, bs_pos(), bs_read(), bs_read1(), mpeg4_cfg_t::extension, i, mpeg4_cfg_t::i_channel, mpeg4_cfg_t::i_object_type, mpeg4_cfg_t::i_ps, mpeg4_cfg_t::i_samplerate, mpeg4_cfg_t::i_sbr, LATM_MAX_EXTRA_SIZE, Mpeg4GASpecificConfig(), Mpeg4ReadAudioObjectType(), and Mpeg4ReadAudioSamplerate().

Referenced by LatmReadStreamMuxConfiguration().

static int OpenPacketizer ( vlc_object_t *  p_this  )  [static]

References es_format_t::audio, AUDIO_ES, decoder_sys_t::b_latm_cfg, block_BytestreamInit(), decoder_sys_t::bytestream, date_Init(), date_Set(), decoder_sys_t::end_date, decoder_t::fmt_in, decoder_t::fmt_out, es_format_t::i_cat, audio_format_t::i_channels, es_format_t::i_codec, es_format_t::i_extra, audio_format_t::i_frame_length, audio_format_t::i_rate, decoder_sys_t::i_state, decoder_sys_t::i_type, msg_Dbg, es_format_t::p_extra, decoder_t::p_sys, p_sys, PacketizeRawBlock(), PacketizeStreamBlock(), decoder_t::pf_packetize, pi_sample_rates, STATE_NOSYNC, TYPE_NONE, TYPE_RAW, VLC_CODEC_MP4A, VLC_EGENERIC, VLC_ENOMEM, and VLC_SUCCESS.

static block_t * PacketizeRawBlock ( decoder_t *  p_dec,
block_t **  pp_block 
) [static]

References es_format_t::audio, BLOCK_FLAG_CORRUPTED, BLOCK_FLAG_DISCONTINUITY, block_Release(), date_Get(), date_Increment(), date_Set(), decoder_sys_t::end_date, decoder_t::fmt_out, block_t::i_dts, audio_format_t::i_frame_length, block_t::i_length, block_t::i_pts, decoder_t::p_sys, p_sys, and VLC_TS_INVALID.

Referenced by OpenPacketizer().

static block_t * PacketizeStreamBlock ( decoder_t *  p_dec,
block_t **  pp_block 
) [static]

References ADTS_HEADER_SIZE, ADTSSyncInfo(), decoder_sys_t::b_latm_cfg, block_BytestreamEmpty(), block_BytestreamFlush(), block_BytestreamPop(), block_BytestreamPush(), BLOCK_FLAG_CORRUPTED, BLOCK_FLAG_DISCONTINUITY, block_GetBytes(), block_New, block_PeekBytes(), block_PeekOffsetBytes(), block_Release(), block_SkipByte(), block_SkipBytes(), block_WaitBytes(), decoder_sys_t::bytestream, date_Get(), date_Set(), decoder_sys_t::end_date, block_t::i_buffer, decoder_sys_t::i_channels, decoder_sys_t::i_frame_length, decoder_sys_t::i_frame_size, decoder_sys_t::i_header_size, block_t::i_pts, decoder_sys_t::i_pts, decoder_sys_t::i_rate, decoder_sys_t::i_state, decoder_sys_t::i_type, LOAS_HEADER_SIZE, LOASParse(), LOASSyncInfo(), msg_Dbg, msg_Warn, block_bytestream_t::p_block, block_t::p_buffer, decoder_t::p_sys, p_sys, SetupOutput(), STATE_GET_DATA, STATE_HEADER, STATE_NEXT_SYNC, STATE_NOSYNC, STATE_SEND_DATA, STATE_SYNC, TYPE_ADTS, TYPE_LOAS, VLC_SUCCESS, and VLC_TS_INVALID.

Referenced by OpenPacketizer().

static void SetupOutput ( decoder_t *  p_dec,
block_t *  p_block 
) [static]

References AOUT_CHAN_PHYSMASK, es_format_t::audio, date_Get(), date_Increment(), date_Init(), date_Set(), decoder_sys_t::end_date, decoder_t::fmt_out, audio_format_t::i_bytes_per_frame, audio_format_t::i_channels, decoder_sys_t::i_channels, decoder_sys_t::i_channels_conf, block_t::i_dts, decoder_sys_t::i_frame_length, audio_format_t::i_frame_length, decoder_sys_t::i_frame_size, block_t::i_length, audio_format_t::i_original_channels, audio_format_t::i_physical_channels, block_t::i_pts, decoder_sys_t::i_rate, audio_format_t::i_rate, msg_Info, decoder_t::p_sys, and p_sys.

Referenced by PacketizeStreamBlock().

int vlc_entry__main ( module_t *  p_module  ) 

const char* vlc_entry_license__main ( void   ) 

Variable Documentation

const int pi_sample_rates[16] [static]

Initial value:

{
    96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050,
    16000, 12000, 11025, 8000,  7350,  0,     0,     0
}

Referenced by ADTSSyncInfo(), Mpeg4ReadAudioSamplerate(), and OpenPacketizer().

Generated on Tue May 25 08:05:27 2010 for VLC by  doxygen 1.5.6