pcm.c File Reference

Real-Time Protocol (RTP) sample-based audio This files defines the same-based RTP payload formats (mostly from RFC3551) including linear, logarithmic and adaptive audio formats. More...

Include dependency graph for pcm.c:

Data Structures
struct	rtp_pcm

Macros
#define	RTP_MAX_CHANS   6

Functions
static void *	rtp_pcm_init (struct vlc_rtp_pt *pt)
static void	rtp_pcm_destroy (struct vlc_rtp_pt *pt, void *data)
static void	rtp_pcm_reorder (void *restrict out, const void *restrict in, size_t frames, size_t sample_size, size_t channels, const uint8_t *restrict map)
static void	rtp_pcm_decode (struct vlc_rtp_pt *pt, void *data, block_t *block, const struct vlc_rtp_pktinfo *restrict info)
static void	rtp_pcm_release (struct vlc_rtp_pt *pt)
static void *	rtp_g722_init (struct vlc_rtp_pt *pt)
static void *	rtp_g726_init (struct vlc_rtp_pt *pt)
static int	rtp_pcm_open (vlc_object_t *obj, struct vlc_rtp_pt *pt, const struct vlc_sdp_pt *desc)
int	vlc_entry__MODULE_NAME (vlc_set_cb vlc_set, void *opaque)
const char *	vlc_entry_api_version__MODULE_NAME (void)

Variables
static const struct vlc_rtp_pt_operations	rtp_pcm_ops
static const struct vlc_rtp_pt_operations	rtp_g722_ops
static const struct vlc_rtp_pt_operations	rtp_g726_ops
static const uint32_t	channel_masks []
static const uint32_t	channel_order []
static const uint32_t	channel_order_3 [6]

Detailed Description

Real-Time Protocol (RTP) sample-based audio This files defines the same-based RTP payload formats (mostly from RFC3551) including linear, logarithmic and adaptive audio formats.

Macro Definition Documentation

RTP_MAX_CHANS

#define RTP_MAX_CHANS   6

Function Documentation

rtp_g722_init()

static void * rtp_g722_init ( struct vlc_rtp_pt *  pt )

static

References aout_FormatPrepare(), es_format_t::audio, AUDIO_ES, rtp_pcm::channel_count, rtp_pcm::channel_mask, es_format_Init(), audio_format_t::i_channels, audio_format_t::i_physical_channels, audio_format_t::i_rate, vlc_rtp_pt::opaque, VLC_CODEC_ADPCM_G722, and vlc_rtp_pt_request_es().

rtp_g726_init()

static void * rtp_g726_init ( struct vlc_rtp_pt *  pt )

static

References aout_FormatPrepare(), es_format_t::audio, AUDIO_ES, rtp_pcm::channel_count, rtp_pcm::channel_mask, es_format_Init(), rtp_pcm::fourcc, es_format_t::i_bitrate, audio_format_t::i_channels, audio_format_t::i_physical_channels, audio_format_t::i_rate, vlc_rtp_pt::opaque, rtp_pcm::sample_bits, and vlc_rtp_pt_request_es().

rtp_pcm_decode()

static void rtp_pcm_decode ( struct vlc_rtp_pt *  pt, void *  data, block_t *  block, const struct vlc_rtp_pktinfo *restrict  info  )

static

References block_Alloc, block_CopyProperties, BLOCK_FLAG_DISCONTINUITY, block_Release, rtp_pcm::channel_count, rtp_pcm::channel_map, rtp_pcm::channel_reorder, vlc_frame_t::i_buffer, vlc_frame_t::i_dts, vlc_frame_t::i_flags, likely, vlc_rtp_pt::opaque, vlc_frame_t::p_buffer, rtp_pcm_reorder(), rtp_pcm::sample_bits, unlikely, vlc_rtp_es_send(), and VLC_TICK_INVALID.

rtp_pcm_destroy()

static void rtp_pcm_destroy ( struct vlc_rtp_pt *  pt, void *  data  )

static

References vlc_rtp_es_destroy().

rtp_pcm_init()

static void * rtp_pcm_init ( struct vlc_rtp_pt *  pt )

static

References aout_FormatPrepare(), es_format_t::audio, AUDIO_ES, rtp_pcm::channel_count, rtp_pcm::channel_mask, es_format_Init(), rtp_pcm::fourcc, vlc_rtp_pt::frequency, audio_format_t::i_channels, audio_format_t::i_physical_channels, audio_format_t::i_rate, vlc_rtp_pt::opaque, and vlc_rtp_pt_request_es().

rtp_pcm_open()

static int rtp_pcm_open ( vlc_object_t *  obj, struct vlc_rtp_pt *  pt, const struct vlc_sdp_pt *  desc  )

static

References aout_CheckChannelReorder(), ARRAY_SIZE, rtp_pcm::channel_count, vlc_sdp_pt::channel_count, rtp_pcm::channel_map, rtp_pcm::channel_mask, channel_masks, channel_order, channel_order_3, rtp_pcm::channel_reorder, rtp_pcm::fourcc, msg_Warn, vlc_sdp_pt::name, vlc_rtp_pt::opaque, vlc_rtp_pt::ops, rtp_g722_ops, rtp_g726_ops, rtp_pcm_ops, rtp_pcm::sample_bits, unlikely, vlc_ascii_strcasecmp(), VLC_CODEC_ADPCM_G722, VLC_CODEC_ADPCM_G726, VLC_CODEC_ADPCM_G726_LE, VLC_CODEC_ALAW, VLC_CODEC_DAT12, VLC_CODEC_MULAW, VLC_CODEC_S16B, VLC_CODEC_S20B, VLC_CODEC_S24B, VLC_CODEC_U8, VLC_ENOMEM, VLC_ENOTSUP, vlc_popcount, and VLC_SUCCESS.

rtp_pcm_release()

static void rtp_pcm_release ( struct vlc_rtp_pt *  pt )

static

References vlc_rtp_pt::opaque.

rtp_pcm_reorder()

static void rtp_pcm_reorder ( void *restrict  out, const void *restrict  in, size_t  frames, size_t  sample_size, size_t  channels, const uint8_t *restrict  map  )

static

References vlc_assert_unreachable.

Referenced by rtp_pcm_decode().

vlc_entry__MODULE_NAME()

int vlc_entry__MODULE_NAME	(	vlc_set_cb	vlc_set,
		void *	opaque
	)

vlc_entry_api_version__MODULE_NAME()

const char * vlc_entry_api_version__MODULE_NAME

(

void

)

Variable Documentation

channel_masks

const uint32_t channel_masks[]

static

Initial value:

= {
    
     0x1 ,
    
     0x1 ,  ( ( 0x2  |  0x4 ) ) ,  ( ( 0x2  |  0x4 )  |  0x1 ) ,  ( ( ( 0x2  |  0x4 )  |  0x1 )  |  0x1000 ) ,
    
     ( ( ( 0x2  |  0x4 )  |  ( 0x20  |  0x40 ) )  |  0x1 ) ,
    
     ( ( ( ( 0x2  |  0x4 )  |  ( 0x20  |  0x40 ) )  |  0x1 )  |  0x1000 ) ,
}

Referenced by rtp_pcm_open().

channel_order

const uint32_t channel_order[]

static

Initial value:

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

Referenced by ModuleThread_NewSpuBuffer(), and rtp_pcm_open().

channel_order_3

const uint32_t channel_order_3[6]

static

Initial value:

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

Referenced by rtp_pcm_open().

rtp_g722_ops

const struct vlc_rtp_pt_operations rtp_g722_ops

static

Initial value:

= {
    rtp_pcm_release, rtp_g722_init, rtp_pcm_destroy, rtp_pcm_decode,
}

Referenced by rtp_pcm_open().

rtp_g726_ops

const struct vlc_rtp_pt_operations rtp_g726_ops

static

Initial value:

= {
    rtp_pcm_release, rtp_g726_init, rtp_pcm_destroy, rtp_pcm_decode,
}

Referenced by rtp_pcm_open().

rtp_pcm_ops

const struct vlc_rtp_pt_operations rtp_pcm_ops

static

Initial value:

= {
    rtp_pcm_release, rtp_pcm_init, rtp_pcm_destroy, rtp_pcm_decode,
}

Referenced by rtp_pcm_open().