Data Structures | Macros | Typedefs | Enumerations | Functions | Variables
truemotion2.c File Reference

Duck TrueMotion2 decoder. More...

#include "avcodec.h"
#include "bytestream.h"
#include "get_bits.h"
#include "dsputil.h"
#include "internal.h"
Include dependency graph for truemotion2.c:

Go to the source code of this file.

Data Structures

struct  TM2Context
 
struct  TM2Codes
 Huffman codes for each of streams. More...
 
struct  TM2Huff
 structure for gathering Huffman codes information More...
 

Macros

#define TM2_ESCAPE   0x80000000
 
#define TM2_DELTAS   64
 
#define TM2_OLD_HEADER_MAGIC   0x00000100
 
#define TM2_NEW_HEADER_MAGIC   0x00000101
 
#define TM2_INIT_POINTERS()
 
#define TM2_INIT_POINTERS_2()
 
#define TM2_RECALC_BLOCK(CHR, stride, last, CD)
 
#define TM2_HEADER_SIZE   40
 

Typedefs

typedef struct TM2Context TM2Context
 
typedef struct TM2Codes TM2Codes
 Huffman codes for each of streams. More...
 
typedef struct TM2Huff TM2Huff
 structure for gathering Huffman codes information More...
 

Enumerations

enum  TM2_STREAMS {
  TM2_C_HI = 0, TM2_C_LO, TM2_L_HI, TM2_L_LO,
  TM2_UPD, TM2_MOT, TM2_TYPE, TM2_NUM_STREAMS
}
 
enum  TM2_BLOCKS {
  TM2_HI_RES = 0, TM2_MED_RES, TM2_LOW_RES, TM2_NULL_RES,
  TM2_UPDATE, TM2_STILL, TM2_MOTION
}
 

Functions

static int tm2_read_tree (TM2Context *ctx, uint32_t prefix, int length, TM2Huff *huff)
 
static int tm2_build_huff_table (TM2Context *ctx, TM2Codes *code)
 
static void tm2_free_codes (TM2Codes *code)
 
static int tm2_get_token (GetBitContext *gb, TM2Codes *code)
 
static int tm2_read_header (TM2Context *ctx, const uint8_t *buf)
 
static int tm2_read_deltas (TM2Context *ctx, int stream_id)
 
static int tm2_read_stream (TM2Context *ctx, const uint8_t *buf, int stream_id, int buf_size)
 
static int GET_TOK (TM2Context *ctx, int type)
 
static void tm2_apply_deltas (TM2Context *ctx, int *Y, int stride, int *deltas, int *last)
 
static void tm2_high_chroma (int *data, int stride, int *last, int *CD, int *deltas)
 
static void tm2_low_chroma (int *data, int stride, int *clast, int *CD, int *deltas, int bx)
 
static void tm2_hi_res_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static void tm2_med_res_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static void tm2_low_res_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static void tm2_null_res_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static void tm2_still_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static void tm2_update_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static void tm2_motion_block (TM2Context *ctx, AVFrame *pic, int bx, int by)
 
static int tm2_decode_blocks (TM2Context *ctx, AVFrame *p)
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int decode_init (AVCodecContext *avctx)
 
static av_cold int decode_end (AVCodecContext *avctx)
 

Variables

static const int tm2_stream_order [TM2_NUM_STREAMS]
 
AVCodec ff_truemotion2_decoder
 

Detailed Description

Duck TrueMotion2 decoder.

Definition in file truemotion2.c.

Macro Definition Documentation

#define TM2_DELTAS   64

Definition at line 34 of file truemotion2.c.

Referenced by GET_TOK(), tm2_read_deltas(), and tm2_read_stream().

#define TM2_ESCAPE   0x80000000

Definition at line 33 of file truemotion2.c.

Referenced by tm2_read_stream().

#define TM2_HEADER_SIZE   40

Definition at line 852 of file truemotion2.c.

Referenced by decode_frame().

#define TM2_INIT_POINTERS ( )
Value:
int *last, *clast; \
int *Y, *U, *V;\
int Ystride, Ustride, Vstride;\
\
Ystride = ctx->y_stride;\
Vstride = ctx->uv_stride;\
Ustride = ctx->uv_stride;\
Y = (ctx->cur?ctx->Y2:ctx->Y1) + by * 4 * Ystride + bx * 4;\
V = (ctx->cur?ctx->V2:ctx->V1) + by * 2 * Vstride + bx * 2;\
U = (ctx->cur?ctx->U2:ctx->U1) + by * 2 * Ustride + bx * 2;\
last = ctx->last + bx * 4;\
clast = ctx->clast + bx * 4;
Y
#define Y
Definition: vf_boxblur.c:76
U
#define U(x)
Definition: arm/vp56_arith.h:37
V
#define V
Definition: libavcodec/options_table.h:36

Definition at line 389 of file truemotion2.c.

Referenced by tm2_hi_res_block(), tm2_low_res_block(), tm2_med_res_block(), and tm2_null_res_block().

#define TM2_INIT_POINTERS_2 ( )
Value:
int *Yo, *Uo, *Vo;\
int oYstride, oUstride, oVstride;\
\
TM2_INIT_POINTERS();\
oYstride = Ystride;\
oVstride = Vstride;\
oUstride = Ustride;\
Yo = (ctx->cur?ctx->Y1:ctx->Y2) + by * 4 * oYstride + bx * 4;\
Vo = (ctx->cur?ctx->V1:ctx->V2) + by * 2 * oVstride + bx * 2;\
Uo = (ctx->cur?ctx->U1:ctx->U2) + by * 2 * oUstride + bx * 2;
TM2_INIT_POINTERS
#define TM2_INIT_POINTERS()
Definition: truemotion2.c:389

Definition at line 403 of file truemotion2.c.

Referenced by tm2_motion_block(), tm2_still_block(), and tm2_update_block().

#define TM2_NEW_HEADER_MAGIC   0x00000101

Definition at line 226 of file truemotion2.c.

Referenced by tm2_read_header().

#define TM2_OLD_HEADER_MAGIC   0x00000100

Definition at line 225 of file truemotion2.c.

Referenced by tm2_read_header().

#define TM2_RECALC_BLOCK (   CHR,
  stride,
  last,
  CD 
)
Value:
{\
CD[0] = CHR[1] - last[1];\
CD[1] = (int)CHR[stride + 1] - (int)CHR[1];\
last[0] = (int)CHR[stride + 0];\
last[1] = (int)CHR[stride + 1];}
stride
int stride
Definition: mace.c:144

Definition at line 416 of file truemotion2.c.

Referenced by tm2_motion_block(), tm2_still_block(), and tm2_update_block().

Typedef Documentation

typedef struct TM2Codes TM2Codes

Huffman codes for each of streams.

typedef struct TM2Context TM2Context
typedef struct TM2Huff TM2Huff

structure for gathering Huffman codes information

Enumeration Type Documentation

enum TM2_BLOCKS
Enumerator
TM2_HI_RES 
TM2_MED_RES 
TM2_LOW_RES 
TM2_NULL_RES 
TM2_UPDATE 
TM2_STILL 
TM2_MOTION 

Definition at line 49 of file truemotion2.c.

enum TM2_STREAMS
Enumerator
TM2_C_HI 
TM2_C_LO 
TM2_L_HI 
TM2_L_LO 
TM2_UPD 
TM2_MOT 
TM2_TYPE 
TM2_NUM_STREAMS 

Definition at line 37 of file truemotion2.c.

Function Documentation

static av_cold int decode_end ( AVCodecContext *  avctx)
static

Definition at line 968 of file truemotion2.c.

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

Definition at line 854 of file truemotion2.c.

static av_cold int decode_init ( AVCodecContext *  avctx)
static

Definition at line 908 of file truemotion2.c.

static int GET_TOK ( TM2Context *  ctx,
int  type 
)
inlinestatic

Definition at line 370 of file truemotion2.c.

Referenced by tm2_decode_blocks(), tm2_hi_res_block(), tm2_low_res_block(), tm2_med_res_block(), tm2_motion_block(), and tm2_update_block().

static void tm2_apply_deltas ( TM2Context *  ctx,
int *  Y,
int  stride,
int *  deltas,
int *  last 
)
inlinestatic

Definition at line 423 of file truemotion2.c.

Referenced by tm2_hi_res_block(), tm2_low_res_block(), tm2_med_res_block(), and tm2_null_res_block().

static int tm2_build_huff_table ( TM2Context *  ctx,
TM2Codes *  code 
)
static

Definition at line 143 of file truemotion2.c.

Referenced by tm2_read_stream().

static int tm2_decode_blocks ( TM2Context *  ctx,
AVFrame *  p 
)
static

Definition at line 732 of file truemotion2.c.

Referenced by decode_frame().

static void tm2_free_codes ( TM2Codes *  code)
static

Definition at line 209 of file truemotion2.c.

Referenced by tm2_read_stream().

static int tm2_get_token ( GetBitContext *  gb,
TM2Codes *  code 
)
inlinestatic

Definition at line 216 of file truemotion2.c.

Referenced by tm2_read_stream().

static void tm2_hi_res_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 473 of file truemotion2.c.

Referenced by tm2_decode_blocks().

static void tm2_high_chroma ( int *  data,
int  stride,
int *  last,
int *  CD,
int *  deltas 
)
inlinestatic

Definition at line 441 of file truemotion2.c.

Referenced by tm2_hi_res_block(), and tm2_low_chroma().

static void tm2_low_chroma ( int *  data,
int  stride,
int *  clast,
int *  CD,
int *  deltas,
int  bx 
)
inlinestatic

Definition at line 454 of file truemotion2.c.

Referenced by tm2_low_res_block(), tm2_med_res_block(), and tm2_null_res_block().

static void tm2_low_res_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 516 of file truemotion2.c.

Referenced by tm2_decode_blocks().

static void tm2_med_res_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 494 of file truemotion2.c.

Referenced by tm2_decode_blocks().

static void tm2_motion_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 678 of file truemotion2.c.

Referenced by tm2_decode_blocks().

static void tm2_null_res_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 557 of file truemotion2.c.

Referenced by tm2_decode_blocks().

static int tm2_read_deltas ( TM2Context *  ctx,
int  stream_id 
)
static

Definition at line 244 of file truemotion2.c.

Referenced by tm2_read_stream().

static int tm2_read_header ( TM2Context *  ctx,
const uint8_t *  buf 
)
inlinestatic

Definition at line 228 of file truemotion2.c.

Referenced by decode_frame().

static int tm2_read_stream ( TM2Context *  ctx,
const uint8_t *  buf,
int  stream_id,
int  buf_size 
)
static

Definition at line 270 of file truemotion2.c.

Referenced by decode_frame().

static int tm2_read_tree ( TM2Context *  ctx,
uint32_t  prefix,
int  length,
TM2Huff *  huff 
)
static

Definition at line 112 of file truemotion2.c.

Referenced by tm2_build_huff_table().

static void tm2_still_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 603 of file truemotion2.c.

Referenced by tm2_decode_blocks().

static void tm2_update_block ( TM2Context *  ctx,
AVFrame *  pic,
int  bx,
int  by 
)
inlinestatic

Definition at line 638 of file truemotion2.c.

Referenced by tm2_decode_blocks().

Variable Documentation

AVCodec ff_truemotion2_decoder
Initial value:
= {
.name = "truemotion2",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_TRUEMOTION2,
.priv_data_size = sizeof(TM2Context),
.init = decode_init,
.close = decode_end,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 2.0"),
}
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
CODEC_CAP_DR1
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: libavcodec/avcodec.h:743
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
decode_end
static av_cold int decode_end(AVCodecContext *avctx)
Definition: truemotion2.c:968
close
static void close(AVCodecParserContext *s)
Definition: h264_parser.c:375
decode_init
static av_cold int decode_init(AVCodecContext *avctx)
Definition: truemotion2.c:908
TM2Context
struct TM2Context TM2Context
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:143
decode
static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: crystalhd.c:868
AV_CODEC_ID_TRUEMOTION2
Definition: libavcodec/avcodec.h:180
decode_frame
static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: truemotion2.c:854

Definition at line 994 of file truemotion2.c.

const int tm2_stream_order[TM2_NUM_STREAMS]
static
Initial value:
= {
TM2_C_HI, TM2_C_LO, TM2_L_HI, TM2_L_LO, TM2_UPD, TM2_MOT, TM2_TYPE
}

Definition at line 848 of file truemotion2.c.

Referenced by decode_frame().

Generated on Wed May 8 2024 06:52:21 for FFmpeg by   doxygen 1.8.11