hvirtual/quicktime/ffmpeg/libavcodec/truemotion1.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "common.h"
#include "avcodec.h"
#include "dsputil.h"
#include "truemotion1data.h"

Include dependency graph for truemotion1.c:

Go to the source code of this file.

Data Structures

struct  TrueMotion1Context
struct  frame_header
struct  comp_types

Defines

#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 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 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 *data_size, uint8_t *buf, int buf_size)
static int truemotion1_decode_end (AVCodecContext *avctx)

Variables

static comp_types compression_types [17]
AVCodec truemotion1_decoder

Detailed Description

Duck TrueMotion v1 Video Decoder by Alex Beregszaszi (alex@fsn.hu) and Mike Melanson (melanson@pcisys.net)

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.

Define Documentation

#define ALGO_NOP   0

Definition at line 101 of file truemotion1.c.

Referenced by truemotion1_decode_frame().

#define ALGO_RGB16H   2

Definition at line 103 of file truemotion1.c.

#define ALGO_RGB16V   1

Definition at line 102 of file truemotion1.c.

#define ALGO_RGB24H   3

Definition at line 104 of file truemotion1.c.

Referenced by truemotion1_decode_frame(), and truemotion1_decode_header().

 
#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 \
                index++; \
        } \
    } else \
        index++;

Definition at line 517 of file truemotion1.c.

Referenced by truemotion1_decode_16bit().

 
#define APPLY_C_PREDICTOR_24 (  ) 

Value:

predictor_pair = s->c_predictor_table[index]; \
    c_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]; \
            c_horiz_pred += (predictor_pair >> 1); \
            if (predictor_pair & 1) \
                GET_NEXT_INDEX() \
            else \
                index++; \
        } \
    } else \
        index++;

Definition at line 534 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 \
                index++; \
        } \
    } else \
        index++;

Definition at line 553 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 \
                index++; \
        } \
    } else \
        index++;

Definition at line 570 of file truemotion1.c.

Referenced by truemotion1_decode_24bit().

#define BLOCK_2x2   0

Definition at line 107 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

#define BLOCK_2x4   1

Definition at line 108 of file truemotion1.c.

#define BLOCK_4x2   2

Definition at line 109 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

#define BLOCK_4x4   3

Definition at line 110 of file truemotion1.c.

#define FLAG_INTERFRAME   8

Definition at line 80 of file truemotion1.c.

Referenced by truemotion1_decode_header().

#define FLAG_INTERPOLATED   4

Definition at line 81 of file truemotion1.c.

Referenced by truemotion1_decode_header().

#define FLAG_KEYFRAME   16

Definition at line 79 of file truemotion1.c.

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

#define FLAG_SPRITE   32

Definition at line 78 of file truemotion1.c.

Referenced by truemotion1_decode_header().

 
#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 508 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

 
#define OUTPUT_PIXEL_PAIR (  ) 

Value:

*current_pixel_pair = *vert_pred + horiz_pred; \
    *vert_pred++ = *current_pixel_pair++; \
    prev_pixel_pair++;

Definition at line 587 of file truemotion1.c.

Referenced by truemotion1_decode_16bit(), and truemotion1_decode_24bit().

Function Documentation

static void gen_vector_table15 ( TrueMotion1Context *  s,
const uint8_t *  sel_vector_table 
) [static]

Definition at line 251 of file truemotion1.c.

References TrueMotion1Context::c_predictor_table, TrueMotion1Context::cdt, make_cdt15_entry(), make_ydt15_entry(), TrueMotion1Context::y_predictor_table, and TrueMotion1Context::ydt.

Referenced by truemotion1_decode_header().

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static void gen_vector_table16 ( TrueMotion1Context *  s,
const uint8_t *  sel_vector_table 
) [static]

Definition at line 272 of file truemotion1.c.

References TrueMotion1Context::c_predictor_table, TrueMotion1Context::cdt, make_cdt16_entry(), make_ydt16_entry(), TrueMotion1Context::y_predictor_table, and TrueMotion1Context::ydt.

Referenced by truemotion1_decode_header().

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static void gen_vector_table24 ( TrueMotion1Context *  s,
const uint8_t *  sel_vector_table 
) [static]

Definition at line 293 of file truemotion1.c.

References TrueMotion1Context::c_predictor_table, TrueMotion1Context::cdt, TrueMotion1Context::fat_c_predictor_table, TrueMotion1Context::fat_cdt, TrueMotion1Context::fat_y_predictor_table, TrueMotion1Context::fat_ydt, make_cdt24_entry(), make_ydt24_entry(), TrueMotion1Context::y_predictor_table, and TrueMotion1Context::ydt.

Referenced by truemotion1_decode_header().

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

Definition at line 185 of file truemotion1.c.

References b, and r.

Referenced by gen_vector_table15().

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

Definition at line 214 of file truemotion1.c.

References b, and r.

Referenced by gen_vector_table16().

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

Definition at line 241 of file truemotion1.c.

References b, and r.

Referenced by gen_vector_table24().

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

Definition at line 170 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_ydt24_entry ( int  p1,
int  p2,
int16_t *  ydt 
) [static]

Definition at line 228 of file truemotion1.c.

Referenced by gen_vector_table24().

static void select_delta_tables ( TrueMotion1Context *  s,
int  delta_table_index 
) [static]

Definition at line 144 of file truemotion1.c.

References TrueMotion1Context::cdt, cdts, TrueMotion1Context::fat_cdt, fat_cdts, TrueMotion1Context::fat_ydt, fat_ydts, memcpy, TrueMotion1Context::ydt, and ydts.

Referenced by truemotion1_decode_header().

static void truemotion1_decode_16bit ( TrueMotion1Context *  s  )  [static]

Definition at line 592 of file truemotion1.c.

References APPLY_C_PREDICTOR, APPLY_Y_PREDICTOR, TrueMotion1Context::avctx, BLOCK_2x2, BLOCK_4x2, TrueMotion1Context::block_type, TrueMotion1Context::block_width, FLAG_KEYFRAME, TrueMotion1Context::flags, TrueMotion1Context::frame, GET_NEXT_INDEX, AVCodecContext::height, TrueMotion1Context::mb_change_bits, TrueMotion1Context::mb_change_bits_row_size, OUTPUT_PIXEL_PAIR, TrueMotion1Context::prev_frame, TrueMotion1Context::vert_pred, and AVCodecContext::width.

Referenced by truemotion1_decode_frame().

static void truemotion1_decode_24bit ( TrueMotion1Context *  s  )  [static]

Definition at line 724 of file truemotion1.c.

References APPLY_C_PREDICTOR_24, APPLY_Y_PREDICTOR_24, TrueMotion1Context::avctx, BLOCK_2x2, BLOCK_4x2, TrueMotion1Context::block_type, TrueMotion1Context::block_width, FLAG_KEYFRAME, TrueMotion1Context::flags, TrueMotion1Context::frame, GET_NEXT_INDEX, AVCodecContext::height, TrueMotion1Context::mb_change_bits, TrueMotion1Context::mb_change_bits_row_size, OUTPUT_PIXEL_PAIR, TrueMotion1Context::prev_frame, TrueMotion1Context::vert_pred, and AVCodecContext::width.

Referenced by truemotion1_decode_frame().

static int truemotion1_decode_end ( AVCodecContext *  avctx  )  [static]

Definition at line 909 of file truemotion1.c.

References av_free(), TrueMotion1Context::prev_frame, AVCodecContext::priv_data, AVCodecContext::release_buffer, s, and TrueMotion1Context::vert_pred.

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static int truemotion1_decode_frame ( AVCodecContext *  avctx,
void *  data,
int *  data_size,
uint8_t *  buf,
int  buf_size 
) [static]

Definition at line 867 of file truemotion1.c.

References ALGO_NOP, ALGO_RGB24H, comp_types::algorithm, av_log(), AV_LOG_ERROR, TrueMotion1Context::avctx, TrueMotion1Context::buf, TrueMotion1Context::compression, TrueMotion1Context::frame, AVCodecContext::get_buffer, AVCodecContext::height, memcpy, TrueMotion1Context::prev_frame, AVCodecContext::priv_data, AVCodecContext::release_buffer, s, TrueMotion1Context::size, truemotion1_decode_16bit(), truemotion1_decode_24bit(), and truemotion1_decode_header().

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static int truemotion1_decode_header ( TrueMotion1Context *  s  )  [static]

Definition at line 322 of file truemotion1.c.

References ALGO_RGB24H, comp_types::algorithm, av_log(), AV_LOG_ERROR, AV_LOG_INFO, TrueMotion1Context::avctx, comp_types::block_height, TrueMotion1Context::block_height, comp_types::block_type, TrueMotion1Context::block_type, comp_types::block_width, TrueMotion1Context::block_width, TrueMotion1Context::buf, frame_header::checksum, TrueMotion1Context::compression, frame_header::compression, frame_header::control, AVCodecContext::debug, frame_header::deltaset, FF_DEBUG_PICT_INFO, FLAG_INTERFRAME, FLAG_INTERPOLATED, FLAG_KEYFRAME, FLAG_SPRITE, TrueMotion1Context::flags, frame_header::flags, gen_vector_table15(), gen_vector_table16(), gen_vector_table24(), TrueMotion1Context::h, frame_header::header_size, frame_header::header_type, AVCodecContext::height, frame_header::height, TrueMotion1Context::index_stream, TrueMotion1Context::index_stream_size, TrueMotion1Context::last_deltaset, TrueMotion1Context::last_vectable, LE_16, TrueMotion1Context::mb_change_bits, TrueMotion1Context::mb_change_bits_row_size, pc_tbl2, AVCodecContext::pix_fmt, PIX_FMT_BGR24, PIX_FMT_RGB555, select_delta_tables(), TrueMotion1Context::size, tables, frame_header::vectable, frame_header::version, TrueMotion1Context::w, frame_header::width, AVCodecContext::width, TrueMotion1Context::x, frame_header::xoffset, frame_header::xsize, TrueMotion1Context::y, frame_header::yoffset, and frame_header::ysize.

Referenced by truemotion1_decode_frame().

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static int truemotion1_decode_init ( AVCodecContext *  avctx  )  [static]

Definition at line 459 of file truemotion1.c.

References av_malloc(), TrueMotion1Context::avctx, TrueMotion1Context::frame, AVCodecContext::has_b_frames, NULL, TrueMotion1Context::prev_frame, AVCodecContext::priv_data, s, TrueMotion1Context::vert_pred, and AVCodecContext::width.

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Variable Documentation

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 120 of file truemotion1.c.

AVCodec truemotion1_decoder

Initial value:

 {
    "truemotion1",
    CODEC_TYPE_VIDEO,
    CODEC_ID_TRUEMOTION1,
    sizeof(TrueMotion1Context),
    truemotion1_decode_init,
    NULL,
    truemotion1_decode_end,
    truemotion1_decode_frame,
    CODEC_CAP_DR1,
}

Definition at line 922 of file truemotion1.c.

Referenced by avcodec_register_all().

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