FFmpeg
Data Structures | Macros | Functions | Variables
ttaenc.c File Reference
#include "ttadata.h"
#include "ttaencdsp.h"
#include "avcodec.h"
#include "put_bits.h"
#include "internal.h"
#include "libavutil/crc.h"

Go to the source code of this file.

Data Structures

struct  TTAEncContext
 

Macros

#define BITSTREAM_WRITER_LE
 
#define PRED(x, k)   (int32_t)((((uint64_t)(x) << (k)) - (x)) >> (k))
 

Functions

static av_cold int tta_encode_init (AVCodecContext *avctx)
 
static int32_t get_sample (const AVFrame *frame, int sample, enum AVSampleFormat format)
 
static int tta_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
 
static av_cold int tta_encode_close (AVCodecContext *avctx)
 

Variables

const AVCodec ff_tta_encoder
 

Macro Definition Documentation

◆ BITSTREAM_WRITER_LE

#define BITSTREAM_WRITER_LE

Definition at line 21 of file ttaenc.c.

◆ PRED

#define PRED (   x,
 
)    (int32_t)((((uint64_t)(x) << (k)) - (x)) >> (k))

Function Documentation

◆ tta_encode_init()

static av_cold int tta_encode_init ( AVCodecContext avctx)
static

Definition at line 36 of file ttaenc.c.

◆ get_sample()

static int32_t get_sample ( const AVFrame frame,
int  sample,
enum AVSampleFormat  format 
)
static

Definition at line 67 of file ttaenc.c.

Referenced by tta_encode_frame().

◆ tta_encode_frame()

static int tta_encode_frame ( AVCodecContext avctx,
AVPacket avpkt,
const AVFrame frame,
int got_packet_ptr 
)
static

Definition at line 85 of file ttaenc.c.

◆ tta_encode_close()

static av_cold int tta_encode_close ( AVCodecContext avctx)
static

Definition at line 196 of file ttaenc.c.

Variable Documentation

◆ ff_tta_encoder

const AVCodec ff_tta_encoder
Initial value:
= {
.name = "tta",
.long_name = NULL_IF_CONFIG_SMALL("TTA (True Audio)"),
.priv_data_size = sizeof(TTAEncContext),
.close = tta_encode_close,
.encode2 = tta_encode_frame,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 203 of file ttaenc.c.

FF_CODEC_CAP_INIT_THREADSAFE
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:41
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
tta_encode_frame
static int tta_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition: ttaenc.c:85
sample_fmts
static enum AVSampleFormat sample_fmts[]
Definition: adpcmenc.c:953
tta_encode_close
static av_cold int tta_encode_close(AVCodecContext *avctx)
Definition: ttaenc.c:196
AV_CODEC_ID_TTA
@ AV_CODEC_ID_TTA
Definition: codec_id.h:443
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
AV_SAMPLE_FMT_U8
@ AV_SAMPLE_FMT_U8
unsigned 8 bits
Definition: samplefmt.h:60
AVSampleFormat
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
AV_SAMPLE_FMT_S16
@ AV_SAMPLE_FMT_S16
signed 16 bits
Definition: samplefmt.h:61
TTAEncContext
Definition: ttaenc.c:29
AV_CODEC_CAP_SMALL_LAST_FRAME
#define AV_CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: codec.h:82
AV_SAMPLE_FMT_S32
@ AV_SAMPLE_FMT_S32
signed 32 bits
Definition: samplefmt.h:62
tta_encode_init
static av_cold int tta_encode_init(AVCodecContext *avctx)
Definition: ttaenc.c:36