FFmpeg
Data Structures | Macros | Functions | Variables
eatgq.c File Reference
#include "libavutil/mem_internal.h"
#include "aandcttab.h"
#include "avcodec.h"
#include "bytestream.h"
#include "eaidct.h"
#include "get_bits.h"
#include "idctdsp.h"
#include "internal.h"

Go to the source code of this file.

Data Structures

struct  TgqContext
 

Macros

#define BITSTREAM_READER_LE
 

Functions

static av_cold int tgq_decode_init (AVCodecContext *avctx)
 
static void tgq_decode_block (TgqContext *s, int16_t block[64], GetBitContext *gb)
 
static void tgq_idct_put_mb (TgqContext *s, int16_t(*block)[64], AVFrame *frame, int mb_x, int mb_y)
 
static void tgq_dconly (TgqContext *s, unsigned char *dst, ptrdiff_t dst_stride, int dc)
 
static void tgq_idct_put_mb_dconly (TgqContext *s, AVFrame *frame, int mb_x, int mb_y, const int8_t *dc)
 
static int tgq_decode_mb (TgqContext *s, AVFrame *frame, int mb_y, int mb_x)
 
static void tgq_calculate_qtable (TgqContext *s, int quant)
 
static int tgq_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 

Variables

const AVCodec ff_eatgq_decoder
 

Detailed Description

Electronic Arts TGQ Video Decoder

Author
Peter Ross pross.nosp@m.@xvi.nosp@m.d.org

Technical details here: http://wiki.multimedia.cx/index.php?title=Electronic_Arts_TGQ

Definition in file eatgq.c.

Macro Definition Documentation

◆ BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 31 of file eatgq.c.

Function Documentation

◆ tgq_decode_init()

static av_cold int tgq_decode_init ( AVCodecContext avctx)
static

Definition at line 52 of file eatgq.c.

◆ tgq_decode_block()

static void tgq_decode_block ( TgqContext s,
int16_t  block[64],
GetBitContext gb 
)
static

Definition at line 64 of file eatgq.c.

Referenced by tgq_decode_mb().

◆ tgq_idct_put_mb()

static void tgq_idct_put_mb ( TgqContext s,
int16_t(*)  block[64],
AVFrame frame,
int  mb_x,
int  mb_y 
)
static

Definition at line 110 of file eatgq.c.

Referenced by tgq_decode_mb().

◆ tgq_dconly()

static void tgq_dconly ( TgqContext s,
unsigned char *  dst,
ptrdiff_t  dst_stride,
int  dc 
)
inlinestatic

Definition at line 128 of file eatgq.c.

Referenced by tgq_idct_put_mb_dconly().

◆ tgq_idct_put_mb_dconly()

static void tgq_idct_put_mb_dconly ( TgqContext s,
AVFrame frame,
int  mb_x,
int  mb_y,
const int8_t *  dc 
)
static

Definition at line 137 of file eatgq.c.

Referenced by tgq_decode_mb().

◆ tgq_decode_mb()

static int tgq_decode_mb ( TgqContext s,
AVFrame frame,
int  mb_y,
int  mb_x 
)
static

Definition at line 154 of file eatgq.c.

Referenced by tgq_decode_frame().

◆ tgq_calculate_qtable()

static void tgq_calculate_qtable ( TgqContext s,
int  quant 
)
static

Definition at line 192 of file eatgq.c.

Referenced by tgq_decode_frame().

◆ tgq_decode_frame()

static int tgq_decode_frame ( AVCodecContext avctx,
void *  data,
int got_frame,
AVPacket avpkt 
)
static

Definition at line 203 of file eatgq.c.

Variable Documentation

◆ ff_eatgq_decoder

const AVCodec ff_eatgq_decoder
Initial value:
= {
.name = "eatgq",
.long_name = NULL_IF_CONFIG_SMALL("Electronic Arts TGQ video"),
.priv_data_size = sizeof(TgqContext),
.capabilities = AV_CODEC_CAP_DR1,
.caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 250 of file eatgq.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:42
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
TgqContext
Definition: eatgq.c:43
AV_CODEC_ID_TGQ
@ AV_CODEC_ID_TGQ
Definition: codec_id.h:171
decode
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
tgq_decode_frame
static int tgq_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: eatgq.c:203
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
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
tgq_decode_init
static av_cold int tgq_decode_init(AVCodecContext *avctx)
Definition: eatgq.c:52
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201