vorbis.c File Reference

Include dependency graph for vorbis.c:

Data Structures
struct	decoder_sys_t
struct	encoder_sys_t
Defines
#define	OV_ECTL_RATEMANAGE_AVG   0x0
#define	ENC_QUALITY_TEXT   N_("Encoding quality")
#define	ENC_QUALITY_LONGTEXT
#define	ENC_MAXBR_TEXT   N_("Maximum encoding bitrate")
#define	ENC_MAXBR_LONGTEXT
#define	ENC_MINBR_TEXT   N_("Minimum encoding bitrate")
#define	ENC_MINBR_LONGTEXT
#define	ENC_CBR_TEXT   N_("CBR encoding")
#define	ENC_CBR_LONGTEXT
#define	ENC_CFG_PREFIX   "sout-vorbis-"
Functions
static int	OpenDecoder (vlc_object_t *)
static int	OpenPacketizer (vlc_object_t *)
static void	CloseDecoder (vlc_object_t *)
static void *	DecodeBlock (decoder_t *, block_t **)
static int	ProcessHeaders (decoder_t *)
static void *	ProcessPacket (decoder_t *, ogg_packet *, block_t **)
static aout_buffer_t *	DecodePacket (decoder_t *, ogg_packet *)
static block_t *	SendPacket (decoder_t *, ogg_packet *, block_t *)
static void	ParseVorbisComments (decoder_t *)
static void	ConfigureChannelOrder (int *, int, uint32_t, bool)
static void	Interleave (float *, const float **, int, int, int *)
static int	OpenEncoder (vlc_object_t *)
static void	CloseEncoder (vlc_object_t *)
static block_t *	Encode (encoder_t *, aout_buffer_t *)
int	vlc_entry__main (module_t *p_module)
const char *	vlc_entry_license__main (void)
Variables
static const int	pi_channels_maps [9]
static const uint32_t	pi_8channels_in []
static const uint32_t	pi_7channels_in []
static const uint32_t	pi_6channels_in []
static const uint32_t	pi_4channels_in []
static const uint32_t	pi_3channels_in []
static const char *const	ppsz_enc_options []

---

Define Documentation

#define ENC_CBR_LONGTEXT

Value:

N_( \
  "Force a constant bitrate encoding (CBR)." )

#define ENC_CBR_TEXT   N_("CBR encoding")

#define ENC_CFG_PREFIX   "sout-vorbis-"

#define ENC_MAXBR_LONGTEXT

Value:

N_( \
  "Maximum bitrate in kbps. This is useful for streaming applications." )

#define ENC_MAXBR_TEXT   N_("Maximum encoding bitrate")

#define ENC_MINBR_LONGTEXT

Value:

N_( \
  "Minimum bitrate in kbps. This is useful for encoding for a fixed-size channel." )

#define ENC_MINBR_TEXT   N_("Minimum encoding bitrate")

#define ENC_QUALITY_LONGTEXT

Value:

N_( \
  "Enforce a quality between 1 (low) and 10 (high), instead " \
  "of specifying a particular bitrate. This will produce a VBR stream." )

#define ENC_QUALITY_TEXT   N_("Encoding quality")

#define OV_ECTL_RATEMANAGE_AVG   0x0

---

Function Documentation

static void CloseDecoder

(

vlc_object_t *

p_this

)

[static]

References decoder_sys_t::b_has_headers, decoder_sys_t::b_packetizer, decoder_t::p_sys, p_sys, decoder_sys_t::vb, decoder_sys_t::vc, decoder_sys_t::vd, and decoder_sys_t::vi.

static void CloseEncoder

(

vlc_object_t *

p_this

)

[static]

static void ConfigureChannelOrder	(	int *	pi_chan_table,
		int	i_channels,
		uint32_t	i_channel_mask,
		bool	b_decode
	)			[static]

References AOUT_CHAN_PHYSMASK, aout_CheckChannelReorder(), i, pi_3channels_in, pi_4channels_in, pi_6channels_in, pi_7channels_in, pi_8channels_in, and pi_channels_in.

Referenced by ProcessHeaders().

static void * DecodeBlock	(	decoder_t *	p_dec,
		block_t **	pp_block
	)			[static]

References decoder_sys_t::b_has_headers, decoder_sys_t::b_packetizer, block_Release(), decoder_sys_t::p_buffer, decoder_t::p_sys, p_sys, ProcessHeaders(), and ProcessPacket().

static aout_buffer_t * DecodePacket	(	decoder_t *	p_dec,
		ogg_packet *	p_oggpacket
	)			[static]

References date_Get(), date_Increment(), decoder_NewAudioBuffer(), decoder_sys_t::end_date, block_t::i_length, block_t::i_pts, Interleave(), block_t::p_buffer, decoder_t::p_sys, p_sys, decoder_sys_t::pi_chan_table, decoder_sys_t::vb, decoder_sys_t::vd, and decoder_sys_t::vi.

static block_t * Encode	(	encoder_t *	p_enc,
		aout_buffer_t *	p_aout_buf
	)			[static]

References es_format_t::audio, block_ChainAppend(), block_New, encoder_t::fmt_in, encoder_sys_t::i_channels, block_t::i_dts, encoder_sys_t::i_last_block_size, block_t::i_length, block_t::i_nb_samples, block_t::i_pts, audio_format_t::i_rate, encoder_sys_t::i_samples_delay, block_t::p_buffer, encoder_t::p_sys, encoder_sys_t::pi_chan_table, encoder_sys_t::vb, encoder_sys_t::vd, and encoder_sys_t::vi.

static void Interleave	(	float *	p_out,
		const float **	pp_in,
		int	i_nb_channels,
		int	i_samples,
		int *	pi_chan_table
	)			[static]

static int OpenDecoder

(

vlc_object_t *

p_this

)

[static]

References AUDIO_ES, decoder_sys_t::b_has_headers, decoder_sys_t::b_packetizer, date_Set(), DecodeBlock(), decoder_sys_t::end_date, decoder_t::fmt_in, decoder_t::fmt_out, es_format_t::i_cat, es_format_t::i_codec, decoder_sys_t::i_last_block_size, decoder_t::p_sys, p_sys, decoder_t::pf_decode_audio, decoder_t::pf_packetize, decoder_sys_t::vc, decoder_sys_t::vi, VLC_CODEC_FI32, VLC_CODEC_FL32, VLC_CODEC_VORBIS, VLC_EGENERIC, VLC_ENOMEM, and VLC_SUCCESS.

static int OpenEncoder

(

vlc_object_t *

p_this

)

[static]

static int OpenPacketizer

(

vlc_object_t *

p_this

)

[static]

References decoder_sys_t::b_packetizer, decoder_t::fmt_out, es_format_t::i_codec, OpenDecoder(), decoder_t::p_sys, VLC_CODEC_VORBIS, and VLC_SUCCESS.

static void ParseVorbisComments

(

decoder_t *

p_dec

)

[static]

References atof(), es_format_t::audio_replay_gain, AUDIO_REPLAY_GAIN_ALBUM, AUDIO_REPLAY_GAIN_TRACK, decoder_t::fmt_out, i, decoder_t::p_description, decoder_t::p_sys, p_sys, audio_replay_gain_t::pb_gain, audio_replay_gain_t::pb_peak, audio_replay_gain_t::pf_gain, audio_replay_gain_t::pf_peak, psz_name, psz_value, strcasecmp(), strdup(), decoder_sys_t::vc, vlc_meta_AddExtra(), and vlc_meta_New().

Referenced by ProcessHeaders().

static int ProcessHeaders

(

decoder_t *

p_dec

)

[static]

References es_format_t::audio, decoder_sys_t::b_packetizer, ConfigureChannelOrder(), date_Init(), decoder_sys_t::end_date, decoder_t::fmt_in, decoder_t::fmt_out, i, es_format_t::i_bitrate, audio_format_t::i_channels, es_format_t::i_extra, audio_format_t::i_original_channels, audio_format_t::i_physical_channels, audio_format_t::i_rate, msg_Dbg, msg_Err, es_format_t::p_extra, decoder_t::p_sys, p_sys, ParseVorbisComments(), decoder_sys_t::pi_chan_table, pi_channels_maps, decoder_sys_t::vb, decoder_sys_t::vc, decoder_sys_t::vd, decoder_sys_t::vi, VLC_EGENERIC, VLC_SUCCESS, XIPH_MAX_HEADER_COUNT, xiph_SplitHeaders(), and xrealloc().

static void * ProcessPacket	(	decoder_t *	p_dec,
		ogg_packet *	p_oggpacket,
		block_t **	pp_block
	)			[static]

References decoder_sys_t::b_packetizer, block_Release(), date_Get(), date_Set(), DecodePacket(), decoder_sys_t::end_date, block_t::i_pts, decoder_t::p_sys, p_sys, SendPacket(), and VLC_TS_INVALID.

static block_t * SendPacket	(	decoder_t *	p_dec,
		ogg_packet *	p_oggpacket,
		block_t *	p_block
	)			[static]

References date_Get(), date_Increment(), decoder_sys_t::end_date, block_t::i_dts, decoder_sys_t::i_last_block_size, block_t::i_length, block_t::i_pts, decoder_t::p_sys, p_sys, and decoder_sys_t::vi.

int vlc_entry__main

(

module_t *

p_module

)

const char* vlc_entry_license__main

(

void

)

---

Variable Documentation

const uint32_t pi_3channels_in[] [static]

Initial value:

{  0x2 ,  0x1 ,  0x4 , 0 }

Referenced by ConfigureChannelOrder().

const uint32_t pi_4channels_in[] [static]

Initial value:

{  0x2 ,  0x4 ,  0x1 ,  0x1000 , 0 }

Referenced by ConfigureChannelOrder().

const uint32_t pi_6channels_in[] [static]

Initial value:

{  0x2 ,  0x1 ,  0x4 ,
   0x20 ,  0x40 , 0x1000 ,0 }

Referenced by ConfigureChannelOrder().

const uint32_t pi_7channels_in[] [static]

Initial value:

{  0x2 ,  0x1 ,  0x4 ,
   0x100 ,  0x200 ,
   0x10 , 0x1000 ,0 }

Referenced by ConfigureChannelOrder().

const uint32_t pi_8channels_in[] [static]

Initial value:

{  0x2 ,  0x1 ,  0x4 ,
   0x100 ,  0x200 ,
   0x20 ,  0x40 , 0x1000 ,0 }

Referenced by ConfigureChannelOrder().

const int pi_channels_maps[9] [static]

Initial value:

{
    0,
     0x1 ,
     0x2  |  0x4 ,
     0x1  |  0x2  |  0x4 ,
     0x2  |  0x4  |  0x20 
     |  0x40 ,
     0x2  |  0x4  |  0x1 
     |  0x20  |  0x40 ,
     0x2  |  0x4  |  0x1 
     |  0x20  |  0x40  |  0x1000 ,
     0x2  |  0x4  |  0x1 
     |  0x10  |  0x100 
     |  0x200  |  0x1000 ,
     0x2  |  0x4  |  0x1  |  0x20 
     |  0x40  |  0x100  |  0x200 
     |  0x1000 ,
}

const char* const ppsz_enc_options[] [static]

Initial value:

 {
    "quality", "max-bitrate", "min-bitrate", "cbr", NULL
}