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truemotion1.c File Reference

Duck TrueMotion v1 Video Decoder by Alex Beregszaszi and Mike Melanson (melan.nosp@m.son@.nosp@m.pcisy.nosp@m.s.ne.nosp@m.t) More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/imgutils.h"
#include "libavutil/internal.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "truemotion1data.h"

Go to the source code of this file.

Data Structures

struct  TrueMotion1Context
 
struct  frame_header
 
struct  comp_types
 

Macros

#define FLAG_SPRITE   32
 
#define FLAG_KEYFRAME   16
 
#define FLAG_INTERFRAME   8
 
#define FLAG_INTERPOLATED   4
 
#define ALGO_NOP   0
 
#define ALGO_RGB16V   1
 
#define ALGO_RGB16H   2
 
#define ALGO_RGB24H   3
 
#define BLOCK_2x2   0
 
#define BLOCK_2x4   1
 
#define BLOCK_4x2   2
 
#define BLOCK_4x4   3
 
#define GET_NEXT_INDEX()
 
#define INC_INDEX
 
#define APPLY_C_PREDICTOR()
 
#define APPLY_C_PREDICTOR_24()
 
#define APPLY_Y_PREDICTOR()
 
#define APPLY_Y_PREDICTOR_24()
 
#define OUTPUT_PIXEL_PAIR()
 

Functions

static void select_delta_tables (TrueMotion1Context *s, int delta_table_index)
 
static int make_ydt15_entry (int p1, int p2, int16_t *ydt)
 
static int make_cdt15_entry (int p1, int p2, int16_t *cdt)
 
static int make_ydt16_entry (int p1, int p2, int16_t *ydt)
 
static int make_cdt16_entry (int p1, int p2, int16_t *cdt)
 
static int make_ydt24_entry (int p1, int p2, int16_t *ydt)
 
static int make_cdt24_entry (int p1, int p2, int16_t *cdt)
 
static void gen_vector_table15 (TrueMotion1Context *s, const uint8_t *sel_vector_table)
 
static void gen_vector_table16 (TrueMotion1Context *s, const uint8_t *sel_vector_table)
 
static void gen_vector_table24 (TrueMotion1Context *s, const uint8_t *sel_vector_table)
 
static int truemotion1_decode_header (TrueMotion1Context *s)
 
static av_cold int truemotion1_decode_init (AVCodecContext *avctx)
 
static void truemotion1_decode_16bit (TrueMotion1Context *s)
 
static void truemotion1_decode_24bit (TrueMotion1Context *s)
 
static int truemotion1_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int truemotion1_decode_end (AVCodecContext *avctx)
 

Variables

static const comp_types compression_types [17]
 
AVCodec ff_truemotion1_decoder
 

Detailed Description

Duck TrueMotion v1 Video Decoder by Alex Beregszaszi and Mike Melanson (melan.nosp@m.son@.nosp@m.pcisy.nosp@m.s.ne.nosp@m.t)

The TrueMotion v1 decoder presently only decodes 16-bit TM1 data and outputs RGB555 (or RGB565) data. 24-bit TM1 data is not supported yet.

Definition in file truemotion1.c.

Macro Definition Documentation

#define FLAG_SPRITE   32

Definition at line 82 of file truemotion1.c.

Referenced by truemotion1_decode_header().

#define FLAG_KEYFRAME   16
#define FLAG_INTERFRAME   8

Definition at line 84 of file truemotion1.c.

Referenced by truemotion1_decode_header().

#define FLAG_INTERPOLATED   4

Definition at line 85 of file truemotion1.c.

Referenced by truemotion1_decode_header().

#define ALGO_NOP   0

Definition at line 105 of file truemotion1.c.

Referenced by truemotion1_decode_frame().

#define ALGO_RGB16V   1

Definition at line 106 of file truemotion1.c.

#define ALGO_RGB16H   2

Definition at line 107 of file truemotion1.c.

#define ALGO_RGB24H   3

Definition at line 108 of file truemotion1.c.

Referenced by truemotion1_decode_frame(), and truemotion1_decode_header().

#define BLOCK_2x2   0

Definition at line 111 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

#define BLOCK_2x4   1

Definition at line 112 of file truemotion1.c.

#define BLOCK_4x2   2

Definition at line 113 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

#define BLOCK_4x4   3

Definition at line 114 of file truemotion1.c.

#define GET_NEXT_INDEX ( )
Value:
{\
if (index_stream_index >= s->index_stream_size) { \
av_log(s->avctx, AV_LOG_INFO, " help! truemotion1 decoder went out of bounds\n"); \
} \
index = s->index_stream[index_stream_index++] * 4; \
}
const char * s
Definition: avisynth_c.h:631
if()
Definition: avfilter.c:975
#define av_log(a,...)
return
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
int index
Definition: gxfenc.c:89

Definition at line 520 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

#define INC_INDEX
Value:
do { \
if (index >= 1023) { \
av_log(s->avctx, AV_LOG_ERROR, "Invalid index value.\n"); \
} \
index++; \
} while (0)
const char * s
Definition: avisynth_c.h:631
if()
Definition: avfilter.c:975
#define av_log(a,...)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
return
int index
Definition: gxfenc.c:89

Definition at line 529 of file truemotion1.c.

#define APPLY_C_PREDICTOR ( )
Value:
predictor_pair = s->c_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
if (!index) { \
predictor_pair = s->c_predictor_table[index]; \
horiz_pred += ((predictor_pair >> 1) * 5); \
if (predictor_pair & 1) \
} \
const char * s
Definition: avisynth_c.h:631
#define GET_NEXT_INDEX()
Definition: truemotion1.c:520
if()
Definition: avfilter.c:975
int index
Definition: gxfenc.c:89
#define INC_INDEX
Definition: truemotion1.c:529

Definition at line 538 of file truemotion1.c.

Referenced by truemotion1_decode_16bit().

#define APPLY_C_PREDICTOR_24 ( )
Value:
predictor_pair = s->c_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
if (!index) { \
predictor_pair = s->fat_c_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) \
} \
const char * s
Definition: avisynth_c.h:631
#define GET_NEXT_INDEX()
Definition: truemotion1.c:520
if()
Definition: avfilter.c:975
int index
Definition: gxfenc.c:89
#define INC_INDEX
Definition: truemotion1.c:529

Definition at line 555 of file truemotion1.c.

Referenced by truemotion1_decode_24bit().

#define APPLY_Y_PREDICTOR ( )
Value:
predictor_pair = s->y_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
if (!index) { \
predictor_pair = s->y_predictor_table[index]; \
horiz_pred += ((predictor_pair >> 1) * 5); \
if (predictor_pair & 1) \
} \
const char * s
Definition: avisynth_c.h:631
#define GET_NEXT_INDEX()
Definition: truemotion1.c:520
if()
Definition: avfilter.c:975
int index
Definition: gxfenc.c:89
#define INC_INDEX
Definition: truemotion1.c:529

Definition at line 573 of file truemotion1.c.

Referenced by truemotion1_decode_16bit().

#define APPLY_Y_PREDICTOR_24 ( )
Value:
predictor_pair = s->y_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) { \
if (!index) { \
predictor_pair = s->fat_y_predictor_table[index]; \
horiz_pred += (predictor_pair >> 1); \
if (predictor_pair & 1) \
} \
const char * s
Definition: avisynth_c.h:631
#define GET_NEXT_INDEX()
Definition: truemotion1.c:520
if()
Definition: avfilter.c:975
int index
Definition: gxfenc.c:89
#define INC_INDEX
Definition: truemotion1.c:529

Definition at line 590 of file truemotion1.c.

Referenced by truemotion1_decode_24bit().

#define OUTPUT_PIXEL_PAIR ( )
Value:
*current_pixel_pair = *vert_pred + horiz_pred; \
*vert_pred++ = *current_pixel_pair++;

Definition at line 607 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

Function Documentation

static void select_delta_tables ( TrueMotion1Context s,
int  delta_table_index 
)
static

Definition at line 148 of file truemotion1.c.

Referenced by truemotion1_decode_header().

static int make_ydt15_entry ( int  p1,
int  p2,
int16_t *  ydt 
)
static

Definition at line 174 of file truemotion1.c.

Referenced by gen_vector_table15().

static int make_cdt15_entry ( int  p1,
int  p2,
int16_t *  cdt 
)
static

Definition at line 186 of file truemotion1.c.

Referenced by gen_vector_table15().

static int make_ydt16_entry ( int  p1,
int  p2,
int16_t *  ydt 
)
static

Definition at line 199 of file truemotion1.c.

Referenced by gen_vector_table16().

static int make_cdt16_entry ( int  p1,
int  p2,
int16_t *  cdt 
)
static

Definition at line 211 of file truemotion1.c.

Referenced by gen_vector_table16().

static int make_ydt24_entry ( int  p1,
int  p2,
int16_t *  ydt 
)
static

Definition at line 221 of file truemotion1.c.

Referenced by gen_vector_table24().

static int make_cdt24_entry ( int  p1,
int  p2,
int16_t *  cdt 
)
static

Definition at line 230 of file truemotion1.c.

Referenced by gen_vector_table24().

static void gen_vector_table15 ( TrueMotion1Context s,
const uint8_t sel_vector_table 
)
static

Definition at line 239 of file truemotion1.c.

Referenced by truemotion1_decode_header().

static void gen_vector_table16 ( TrueMotion1Context s,
const uint8_t sel_vector_table 
)
static

Definition at line 260 of file truemotion1.c.

Referenced by truemotion1_decode_header().

static void gen_vector_table24 ( TrueMotion1Context s,
const uint8_t sel_vector_table 
)
static

Definition at line 281 of file truemotion1.c.

Referenced by truemotion1_decode_header().

static int truemotion1_decode_header ( TrueMotion1Context s)
static

Definition at line 310 of file truemotion1.c.

Referenced by truemotion1_decode_frame().

static av_cold int truemotion1_decode_init ( AVCodecContext avctx)
static

Definition at line 469 of file truemotion1.c.

static void truemotion1_decode_16bit ( TrueMotion1Context s)
static

Definition at line 611 of file truemotion1.c.

Referenced by truemotion1_decode_frame().

static void truemotion1_decode_24bit ( TrueMotion1Context s)
static

Definition at line 737 of file truemotion1.c.

Referenced by truemotion1_decode_frame().

static int truemotion1_decode_frame ( AVCodecContext avctx,
void data,
int *  got_frame,
AVPacket avpkt 
)
static

Definition at line 864 of file truemotion1.c.

static av_cold int truemotion1_decode_end ( AVCodecContext avctx)
static

Definition at line 896 of file truemotion1.c.

Variable Documentation

const comp_types compression_types[17]
static
Initial value:
= {
{ ALGO_NOP, 0, 0, 0 },
{ ALGO_RGB16V, 4, 4, BLOCK_4x4 },
{ ALGO_RGB16H, 4, 4, BLOCK_4x4 },
{ ALGO_RGB16V, 4, 2, BLOCK_4x2 },
{ ALGO_RGB16H, 4, 2, BLOCK_4x2 },
{ ALGO_RGB16V, 2, 4, BLOCK_2x4 },
{ ALGO_RGB16H, 2, 4, BLOCK_2x4 },
{ ALGO_RGB16V, 2, 2, BLOCK_2x2 },
{ ALGO_RGB16H, 2, 2, BLOCK_2x2 },
{ ALGO_NOP, 4, 4, BLOCK_4x4 },
{ ALGO_RGB24H, 4, 4, BLOCK_4x4 },
{ ALGO_NOP, 4, 2, BLOCK_4x2 },
{ ALGO_RGB24H, 4, 2, BLOCK_4x2 },
{ ALGO_NOP, 2, 4, BLOCK_2x4 },
{ ALGO_RGB24H, 2, 4, BLOCK_2x4 },
{ ALGO_NOP, 2, 2, BLOCK_2x2 },
}
#define BLOCK_4x2
Definition: truemotion1.c:113
#define ALGO_RGB16V
Definition: truemotion1.c:106
#define ALGO_NOP
Definition: truemotion1.c:105
#define ALGO_RGB16H
Definition: truemotion1.c:107
#define ALGO_RGB24H
Definition: truemotion1.c:108
#define BLOCK_2x2
Definition: truemotion1.c:111
#define BLOCK_4x4
Definition: truemotion1.c:114
#define BLOCK_2x4
Definition: truemotion1.c:112

Definition at line 124 of file truemotion1.c.

AVCodec ff_truemotion1_decoder
Initial value:
= {
.name = "truemotion1",
.long_name = NULL_IF_CONFIG_SMALL("Duck TrueMotion 1.0"),
.priv_data_size = sizeof(TrueMotion1Context),
.capabilities = CODEC_CAP_DR1,
}
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:794
static av_cold int truemotion1_decode_end(AVCodecContext *avctx)
Definition: truemotion1.c:896
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:175
static av_cold int truemotion1_decode_init(AVCodecContext *avctx)
Definition: truemotion1.c:469
static int truemotion1_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: truemotion1.c:864
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
Definition: ccaption_dec.c:522

Definition at line 906 of file truemotion1.c.