libtheoraenc.c File Reference

Theora encoder using libtheora. More...

#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "libavutil/pixdesc.h"
#include "libavutil/log.h"
#include "libavutil/base64.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include <theora/theoraenc.h>

Go to the source code of this file.

Data Structures
struct	TheoraContext

Functions
static int	concatenate_packet (unsigned int *offset, AVCodecContext *avc_context, const ogg_packet *packet)
	Concatenate an ogg_packet into the extradata.
static int	get_stats (AVCodecContext *avctx, int eos)
static int	submit_stats (AVCodecContext *avctx)
static av_cold int	encode_init (AVCodecContext *avc_context)
static int	encode_frame (AVCodecContext *avc_context, AVPacket *pkt, const AVFrame *frame, int *got_packet)
static av_cold int	encode_close (AVCodecContext *avc_context)

Variables
static const AVOption	options []
static const AVClass	theora_class
const FFCodec	ff_libtheora_encoder
	AVCodec struct exposed to libavcodec.

Detailed Description

Theora encoder using libtheora.

Author

Paul Richards paul..nosp@m.rich.nosp@m.ards@.nosp@m.gmai.nosp@m.l.com

A lot of this is copy / paste from other output codecs in libavcodec or pure guesswork (or both).

I have used t_ prefixes on variables which are libtheora types and o_ prefixes on variables which are libogg types.

Definition in file libtheoraenc.c.

Function Documentation

concatenate_packet()

static int concatenate_packet ( unsigned int * offset, AVCodecContext * avc_context, const ogg_packet * packet )

static

Concatenate an ogg_packet into the extradata.

Definition at line 73 of file libtheoraenc.c.

Referenced by encode_init().

get_stats()

static int get_stats ( AVCodecContext * avctx, int eos )

static

Definition at line 106 of file libtheoraenc.c.

Referenced by encode_frame(), and encode_init().

submit_stats()

static int submit_stats ( AVCodecContext * avctx )

static

Definition at line 144 of file libtheoraenc.c.

Referenced by encode_frame(), and encode_init().

encode_init()

static av_cold int encode_init ( AVCodecContext * avc_context )

static

Definition at line 181 of file libtheoraenc.c.

encode_frame()

static int encode_frame ( AVCodecContext * avc_context, AVPacket * pkt, const AVFrame * frame, int * got_packet )

static

Definition at line 301 of file libtheoraenc.c.

encode_close()

static av_cold int encode_close ( AVCodecContext * avc_context )

static

Definition at line 388 of file libtheoraenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "speed_level", "Sets the encoding speed level",  0x42 , AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { NULL }
}

Definition at line 60 of file libtheoraenc.c.

theora_class

const AVClass theora_class

static

Initial value:

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

Definition at line 65 of file libtheoraenc.c.

ff_libtheora_encoder

const FFCodec ff_libtheora_encoder

Initial value:

= {
    .p.name         = "libtheora",
    CODEC_LONG_NAME("libtheora Theora"),
    .p.type         = AVMEDIA_TYPE_VIDEO,
    .p.id           = AV_CODEC_ID_THEORA,
    .p.capabilities = AV_CODEC_CAP_DR1 |
                      
                      AV_CODEC_CAP_DELAY |
                      AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
    .caps_internal  = FF_CODEC_CAP_NOT_INIT_THREADSAFE,
    .priv_data_size = sizeof(TheoraContext),
    .init           = encode_init,
    .close          = encode_close,
    FF_CODEC_ENCODE_CB(encode_frame),
    CODEC_PIXFMTS(AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P),
    .p.priv_class   = &theora_class,
    .color_ranges   = AVCOL_RANGE_MPEG,
    .p.wrapper_name = "libtheora",
}

AVCodec struct exposed to libavcodec.

Definition at line 401 of file libtheoraenc.c.