hvirtual/quicktime/ffmpeg/libavcodec/oggvorbis.c File Reference

#include <vorbis/vorbisenc.h>
#include "avcodec.h"
#include <assert.h>

Include dependency graph for oggvorbis.c:

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Data Structures
struct	OggVorbisContext
Defines
#define	OGGVORBIS_FRAME_SIZE   64
#define	BUFFER_SIZE   (1024*64)
Functions
static int	oggvorbis_init_encoder (vorbis_info *vi, AVCodecContext *avccontext)
static int	oggvorbis_encode_init (AVCodecContext *avccontext)
static int	oggvorbis_encode_frame (AVCodecContext *avccontext, unsigned char *packets, int buf_size, void *data)
static int	oggvorbis_encode_close (AVCodecContext *avccontext)
static int	oggvorbis_decode_init (AVCodecContext *avccontext)
static int	conv (int samples, float **pcm, char *buf, int channels)
static int	oggvorbis_decode_frame (AVCodecContext *avccontext, void *data, int *data_size, uint8_t *buf, int buf_size)
static int	oggvorbis_decode_close (AVCodecContext *avccontext)
Variables
AVCodec	oggvorbis_encoder
AVCodec	oggvorbis_decoder

---

Detailed Description

Ogg Vorbis codec support via libvorbisenc.

Author:

Mark Hills <mark@pogo.org.uk>

Definition in file oggvorbis.c.

---

Define Documentation

#define BUFFER_SIZE   (1024*64)

Definition at line 16 of file oggvorbis.c.

#define OGGVORBIS_FRAME_SIZE   64

Definition at line 14 of file oggvorbis.c.

Referenced by oggvorbis_encode_frame(), and oggvorbis_encode_init().

---

Function Documentation

static int conv	(	int	samples,
		float **	pcm,
		char *	buf,
		int	channels
	)			[inline, static]

Definition at line 259 of file oggvorbis.c.

Referenced by oggvorbis_decode_frame().

static int oggvorbis_decode_close

(

AVCodecContext *

avccontext

)

[static]

Definition at line 325 of file oggvorbis.c.

References context, AVCodecContext::priv_data, OggVorbisContext::vc, and OggVorbisContext::vi.

static int oggvorbis_decode_frame	(	AVCodecContext *	avccontext,
		void *	data,
		int *	data_size,
		uint8_t *	buf,
		int	buf_size
	)			[static]

Definition at line 284 of file oggvorbis.c.

References context, conv(), OggVorbisContext::op, AVCodecContext::priv_data, samples, OggVorbisContext::vb, OggVorbisContext::vd, and OggVorbisContext::vi.

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static int oggvorbis_decode_init

(

AVCodecContext *

avccontext

)

[static]

Definition at line 183 of file oggvorbis.c.

References av_log(), AV_LOG_DEBUG, AV_LOG_ERROR, AVCodecContext::channels, context, AVCodecContext::extradata, AVCodecContext::extradata_size, offset, OggVorbisContext::op, AVCodecContext::priv_data, AVCodecContext::sample_rate, AVCodecContext::time_base, OggVorbisContext::vb, OggVorbisContext::vc, OggVorbisContext::vd, and OggVorbisContext::vi.

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static int oggvorbis_encode_close

(

AVCodecContext *

avccontext

)

[static]

Definition at line 155 of file oggvorbis.c.

References av_freep(), AVCodecContext::coded_frame, context, AVCodecContext::extradata, AVCodecContext::priv_data, OggVorbisContext::vb, OggVorbisContext::vd, and OggVorbisContext::vi.

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static int oggvorbis_encode_frame	(	AVCodecContext *	avccontext,
		unsigned char *	packets,
		int	buf_size,
		void *	data
	)			[static]

Definition at line 98 of file oggvorbis.c.

References OggVorbisContext::buffer, OggVorbisContext::buffer_index, AVCodecContext::coded_frame, context, memcpy, NULL, OGGVORBIS_FRAME_SIZE, AVCodecContext::priv_data, samples, OggVorbisContext::vb, OggVorbisContext::vd, and OggVorbisContext::vi.

static int oggvorbis_encode_init

(

AVCodecContext *

avccontext

)

[static]

Definition at line 48 of file oggvorbis.c.

References av_log(), AV_LOG_ERROR, av_mallocz(), av_realloc(), av_xiphlacing(), avcodec_alloc_frame(), AVCodecContext::coded_frame, context, AVCodecContext::extradata, AVCodecContext::extradata_size, AVCodecContext::frame_size, header, LIBAVCODEC_IDENT, memcpy, offset, OGGVORBIS_FRAME_SIZE, oggvorbis_init_encoder(), AVCodecContext::priv_data, OggVorbisContext::vb, OggVorbisContext::vc, OggVorbisContext::vd, and OggVorbisContext::vi.

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static int oggvorbis_init_encoder	(	vorbis_info *	vi,
		AVCodecContext *	avccontext
	)			[static]

Definition at line 31 of file oggvorbis.c.

References AVCodecContext::bit_rate, AVCodecContext::channels, NULL, and AVCodecContext::sample_rate.

Referenced by oggvorbis_encode_init().

---

Variable Documentation

AVCodec oggvorbis_decoder

Initial value:

 {
    "vorbis",
    CODEC_TYPE_AUDIO,
    CODEC_ID_VORBIS,
    sizeof(OggVorbisContext),
    oggvorbis_decode_init,
    NULL,
    oggvorbis_decode_close,
    oggvorbis_decode_frame,
    .capabilities= CODEC_CAP_DELAY,
}

Definition at line 335 of file oggvorbis.c.

Referenced by avcodec_register_all().

AVCodec oggvorbis_encoder

Initial value:

 {
    "vorbis",
    CODEC_TYPE_AUDIO,
    CODEC_ID_VORBIS,
    sizeof(OggVorbisContext),
    oggvorbis_encode_init,
    oggvorbis_encode_frame,
    oggvorbis_encode_close,
    .capabilities= CODEC_CAP_DELAY,
}

Definition at line 172 of file oggvorbis.c.

Referenced by avcodec_register_all().