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"

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

Definition at line 83 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), truemotion1_decode_24bit(), and truemotion1_decode_header().

#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"); \
        return; \
    } \
    index = s->index_stream[index_stream_index++] * 4; \
}

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");   \
        return;                                                     \
    }                                                               \
    index++;                                                        \
} while (0)

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) { \
        GET_NEXT_INDEX() \
        if (!index) { \
            GET_NEXT_INDEX() \
            predictor_pair = s->c_predictor_table[index]; \
            horiz_pred += ((predictor_pair >> 1) * 5); \
            if (predictor_pair & 1) \
                GET_NEXT_INDEX() \
            else \
                INC_INDEX; \
        } \
    } else \
        INC_INDEX;

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) { \
        GET_NEXT_INDEX() \
        if (!index) { \
            GET_NEXT_INDEX() \
            predictor_pair = s->fat_c_predictor_table[index]; \
            horiz_pred += (predictor_pair >> 1); \
            if (predictor_pair & 1) \
                GET_NEXT_INDEX() \
            else \
                INC_INDEX; \
        } \
    } else \
        INC_INDEX;

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) { \
        GET_NEXT_INDEX() \
        if (!index) { \
            GET_NEXT_INDEX() \
            predictor_pair = s->y_predictor_table[index]; \
            horiz_pred += ((predictor_pair >> 1) * 5); \
            if (predictor_pair & 1) \
                GET_NEXT_INDEX() \
            else \
                INC_INDEX; \
        } \
    } else \
        INC_INDEX;

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) { \
        GET_NEXT_INDEX() \
        if (!index) { \
            GET_NEXT_INDEX() \
            predictor_pair = s->fat_y_predictor_table[index]; \
            horiz_pred += (predictor_pair >> 1); \
            if (predictor_pair & 1) \
                GET_NEXT_INDEX() \
            else \
                INC_INDEX; \
        } \
    } else \
        INC_INDEX;

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 },
    { ALGO_RGB24H, 2, 2, BLOCK_2x2 }
}

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"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_TRUEMOTION1,
    .priv_data_size = sizeof(TrueMotion1Context),
    .init           = truemotion1_decode_init,
    .close          = truemotion1_decode_end,
    .decode         = truemotion1_decode_frame,
    .capabilities   = CODEC_CAP_DR1,
}

Definition at line 906 of file truemotion1.c.

Data Structures

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

Function Documentation

Variable Documentation