libmp3lame.c File Reference

Interface to libmp3lame for mp3 encoding. More...

#include <lame/lame.h>
#include "libavutil/channel_layout.h"
#include "libavutil/common.h"
#include "libavutil/float_dsp.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "audio_frame_queue.h"
#include "internal.h"
#include "mpegaudio.h"
#include "mpegaudiodecheader.h"

Classes
struct	LAMEContext

Macros
#define	BUFFER_SIZE   (7200 + 2 * MPA_FRAME_SIZE + MPA_FRAME_SIZE / 4+1000)
#define	ENCODE_BUFFER(func, buf_type, buf_name)
#define	OFFSET(x)   offsetof(LAMEContext, x)
#define	AE   AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

Typedefs
typedef struct LAMEContext	LAMEContext

Variables
AVCodec	ff_libmp3lame_encoder

Detailed Description

Interface to libmp3lame for mp3 encoding.

Macro Definition Documentation

ENCODE_BUFFER

#define ENCODE_BUFFER	(		func,
			buf_type,
			buf_name
	)

Value:

do {                        \
    lame_result = func(s->gfp,                                              \
                       (const buf_type *)buf_name[0],                       \
                       (const buf_type *)buf_name[1], frame->nb_samples,    \
                       s->buffer + s->buffer_index,                         \
                       s->buffer_size - s->buffer_index);                   \
} while (0)

Variable Documentation

ff_libmp3lame_encoder

AVCodec ff_libmp3lame_encoder

Initial value:

= {
    .name                  = "libmp3lame",
    .long_name             = NULL_IF_CONFIG_SMALL("libmp3lame MP3 (MPEG audio layer 3)"),
    .type                  = AVMEDIA_TYPE_AUDIO,
    .id                    = AV_CODEC_ID_MP3,
    .priv_data_size        = sizeof(LAMEContext),
    .init                  = mp3lame_encode_init,
    .encode2               = mp3lame_encode_frame,
    .close                 = mp3lame_encode_close,
    .capabilities          = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_SMALL_LAST_FRAME,
    .sample_fmts           = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S32P,
                                                             AV_SAMPLE_FMT_FLTP,
                                                             AV_SAMPLE_FMT_S16P,
                                                             AV_SAMPLE_FMT_NONE },
    .supported_samplerates = libmp3lame_sample_rates,
    .channel_layouts       = (const uint64_t[]) { AV_CH_LAYOUT_MONO,
                                                  AV_CH_LAYOUT_STEREO,
                                                  0 },
    .priv_class            = &libmp3lame_class,
    .defaults              = libmp3lame_defaults,
    .wrapper_name          = "libmp3lame",
}