pcm_rechunk.c File Reference

#include "libavcodec/bsf.h"
#include "libavcodec/bsf_internal.h"
#include "libavutil/avassert.h"
#include "libavutil/opt.h"

Go to the source code of this file.

Data Structures
struct	PCMContext

Macros
#define	OFFSET(x)
#define	FLAGS   (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_BSF_PARAM)

Functions
static int	init (AVBSFContext *ctx)
static void	uninit (AVBSFContext *ctx)
static void	flush (AVBSFContext *ctx)
static int	send_packet (PCMContext *s, int nb_samples, AVPacket *pkt)
static void	drain_packet (AVPacket *pkt, int drain_data, int drain_samples)
static int	get_next_nb_samples (AVBSFContext *ctx)
static void	set_silence (AVCodecParameters *par, uint8_t *buf, size_t size)
static int	rechunk_filter (AVBSFContext *ctx, AVPacket *pkt)

Variables
static const AVOption	options []
static const AVClass	pcm_rechunk_class
static enum AVCodecID	codec_ids []
const FFBitStreamFilter	ff_pcm_rechunk_bsf

Macro Definition Documentation

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(PCMContext, x)

Definition at line 188 of file pcm_rechunk.c.

FLAGS

#define FLAGS   (AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_BSF_PARAM)

Definition at line 189 of file pcm_rechunk.c.

Function Documentation

init()

static int init ( AVBSFContext * ctx )

static

Definition at line 39 of file pcm_rechunk.c.

uninit()

static void uninit ( AVBSFContext * ctx )

static

Definition at line 68 of file pcm_rechunk.c.

flush()

static void flush ( AVBSFContext * ctx )

static

Definition at line 75 of file pcm_rechunk.c.

send_packet()

static int send_packet ( PCMContext * s, int nb_samples, AVPacket * pkt )

static

Definition at line 83 of file pcm_rechunk.c.

Referenced by rechunk_filter().

drain_packet()

static void drain_packet ( AVPacket * pkt, int drain_data, int drain_samples )

static

Definition at line 90 of file pcm_rechunk.c.

Referenced by rechunk_filter().

get_next_nb_samples()

static int get_next_nb_samples ( AVBSFContext * ctx )

static

Definition at line 100 of file pcm_rechunk.c.

Referenced by rechunk_filter().

set_silence()

static void set_silence ( AVCodecParameters * par, uint8_t * buf, size_t size )

static

Definition at line 111 of file pcm_rechunk.c.

Referenced by rechunk_filter().

rechunk_filter()

static int rechunk_filter ( AVBSFContext * ctx, AVPacket * pkt )

static

Definition at line 123 of file pcm_rechunk.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "nb_out_samples", "set the number of per-packet output samples", OFFSET(nb_out_samples),   AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
    { "n",              "set the number of per-packet output samples", OFFSET(nb_out_samples),   AV_OPT_TYPE_INT, {.i64=1024}, 1, INT_MAX, FLAGS },
    { "pad",            "pad last packet with zeros",                  OFFSET(pad),             AV_OPT_TYPE_BOOL, {.i64=1} ,   0,       1, FLAGS },
    { "p",              "pad last packet with zeros",                  OFFSET(pad),             AV_OPT_TYPE_BOOL, {.i64=1} ,   0,       1, FLAGS },
    { "frame_rate",     "set number of packets per second",            OFFSET(frame_rate),  AV_OPT_TYPE_RATIONAL, {.dbl=0},    0, INT_MAX, FLAGS },
    { "r",              "set number of packets per second",            OFFSET(frame_rate),  AV_OPT_TYPE_RATIONAL, {.dbl=0},    0, INT_MAX, FLAGS },
    { NULL },
}

Definition at line 190 of file pcm_rechunk.c.

pcm_rechunk_class

const AVClass pcm_rechunk_class

static

Initial value:

= {
    .class_name = "pcm_rechunk_bsf",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 200 of file pcm_rechunk.c.

codec_ids

enum AVCodecID codec_ids[]

static

Initial value:

= {
    AV_CODEC_ID_PCM_ALAW,
    AV_CODEC_ID_PCM_F16LE,
    AV_CODEC_ID_PCM_F24LE,
    AV_CODEC_ID_PCM_F32BE,
    AV_CODEC_ID_PCM_F32LE,
    AV_CODEC_ID_PCM_F64BE,
    AV_CODEC_ID_PCM_F64LE,
    AV_CODEC_ID_PCM_MULAW,
    AV_CODEC_ID_PCM_S16BE,
    AV_CODEC_ID_PCM_S16LE,
    AV_CODEC_ID_PCM_S24BE,
    AV_CODEC_ID_PCM_S24DAUD,
    AV_CODEC_ID_PCM_S24LE,
    AV_CODEC_ID_PCM_S32BE,
    AV_CODEC_ID_PCM_S32LE,
    AV_CODEC_ID_PCM_S64BE,
    AV_CODEC_ID_PCM_S64LE,
    AV_CODEC_ID_PCM_S8,
    AV_CODEC_ID_PCM_SGA,
    AV_CODEC_ID_PCM_U8,
    AV_CODEC_ID_PCM_VIDC,
    AV_CODEC_ID_NONE,
}

Definition at line 207 of file pcm_rechunk.c.

ff_pcm_rechunk_bsf

const FFBitStreamFilter ff_pcm_rechunk_bsf

Initial value:

= {
    .p.name         = "pcm_rechunk",
    .p.codec_ids    = codec_ids,
    .p.priv_class   = &pcm_rechunk_class,
    .priv_data_size = sizeof(PCMContext),
    .filter         = rechunk_filter,
    .init           = init,
    .flush          = flush,
    .close          = uninit,
}

Definition at line 232 of file pcm_rechunk.c.