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

#include "common.h"
#include "bitstream.h"
#include "avcodec.h"
#include "dsputil.h"

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Data Structures

struct  HYuvContext

Defines

#define VLC_BITS   11
#define B   0
#define G   1
#define R   2

Enumerations

enum  Predictor { LEFT = 0, PLANE, MEDIAN }

Functions

static int add_left_prediction (uint8_t *dst, uint8_t *src, int w, int acc)
static void add_median_prediction (uint8_t *dst, uint8_t *src1, uint8_t *diff, int w, int *left, int *left_top)
static void add_left_prediction_bgr32 (uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue)
static int sub_left_prediction (HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int left)
static void read_len_table (uint8_t *dst, GetBitContext *gb)
static int generate_bits_table (uint32_t *dst, uint8_t *len_table)
static void generate_len_table (uint8_t *dst, uint64_t *stats, int size)
static int read_huffman_tables (HYuvContext *s, uint8_t *src, int length)
static int read_old_huffman_tables (HYuvContext *s)
static void alloc_temp (HYuvContext *s)
static int common_init (AVCodecContext *avctx)
static int decode_init (AVCodecContext *avctx)
static int store_table (HYuvContext *s, uint8_t *len, uint8_t *buf)
static int encode_init (AVCodecContext *avctx)
static void decode_422_bitstream (HYuvContext *s, int count)
static void decode_gray_bitstream (HYuvContext *s, int count)
static int encode_422_bitstream (HYuvContext *s, int count)
static int encode_gray_bitstream (HYuvContext *s, int count)
static void decode_bgr_bitstream (HYuvContext *s, int count)
static void draw_slice (HYuvContext *s, int y)
static int decode_frame (AVCodecContext *avctx, void *data, int *data_size, uint8_t *buf, int buf_size)
static int common_end (HYuvContext *s)
static int decode_end (AVCodecContext *avctx)
static int encode_frame (AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data)
static int encode_end (AVCodecContext *avctx)

Variables

static const unsigned char classic_shift_luma []
static const unsigned char classic_shift_chroma []
static const unsigned char classic_add_luma [256]
static const unsigned char classic_add_chroma [256]
AVCodec huffyuv_decoder
AVCodec ffvhuff_decoder

Detailed Description

huffyuv codec for libavcodec.

Definition in file huffyuv.c.

Define Documentation

#define B   0

Definition at line 41 of file huffyuv.c.

Referenced by add_left_prediction_bgr32(), decode_bgr_bitstream(), decode_frame(), gmc1_altivec(), gmc1_c(), gmc_c(), h263_pred_motion(), horizX1Filter(), ipvideo_decode_block_opcode_0x2(), ipvideo_decode_block_opcode_0x3(), ipvideo_decode_block_opcode_0x4(), ipvideo_decode_block_opcode_0x7(), ipvideo_decode_block_opcode_0x8(), ipvideo_decode_block_opcode_0x9(), ipvideo_decode_block_opcode_0xA(), pred_16x8_motion(), pred_motion(), and wmv2_pred_motion().

#define G   1

Definition at line 42 of file huffyuv.c.

Referenced by add_left_prediction_bgr32(), decode_bgr_bitstream(), and decode_frame().

#define R   2

Definition at line 43 of file huffyuv.c.

Referenced by add_left_prediction_bgr32(), decode_bgr_bitstream(), and decode_frame().

#define VLC_BITS   11

Definition at line 34 of file huffyuv.c.

Enumeration Type Documentation

enum Predictor

Enumerator:
LEFT 
PLANE 
MEDIAN 

Definition at line 46 of file huffyuv.c.

Function Documentation

static int add_left_prediction ( uint8_t *  dst,
uint8_t *  src,
int  w,
int  acc 
) [inline, static]

Definition at line 129 of file huffyuv.c.

Referenced by decode_frame().

static void add_left_prediction_bgr32 ( uint8_t *  dst,
uint8_t *  src,
int  w,
int *  red,
int *  green,
int *  blue 
) [inline, static]

Definition at line 165 of file huffyuv.c.

References B, b, G, R, and r.

Referenced by decode_frame().

static void add_median_prediction ( uint8_t *  dst,
uint8_t *  src1,
uint8_t *  diff,
int  w,
int *  left,
int *  left_top 
) [inline, static]

Definition at line 148 of file huffyuv.c.

Referenced by decode_frame().

static void alloc_temp ( HYuvContext *  s  )  [static]

Definition at line 351 of file huffyuv.c.

References av_malloc(), HYuvContext::bitstream_bpp, HYuvContext::temp, and HYuvContext::width.

Referenced by decode_init(), and encode_init().

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static int common_end ( HYuvContext *  s  )  [static]

Definition at line 1018 of file huffyuv.c.

References av_freep(), and HYuvContext::temp.

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static int common_init ( AVCodecContext *  avctx  )  [static]

Definition at line 363 of file huffyuv.c.

References HYuvContext::avctx, HYuvContext::dsp, dsputil_init(), AVCodecContext::flags, HYuvContext::flags, AVCodecContext::height, HYuvContext::height, AVCodecContext::priv_data, s, AVCodecContext::width, and HYuvContext::width.

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static void decode_422_bitstream ( HYuvContext *  s,
int  count 
) [static]

Definition at line 619 of file huffyuv.c.

References HYuvContext::gb, get_vlc2(), VLC::table, HYuvContext::temp, HYuvContext::vlc, and VLC_BITS.

Referenced by decode_frame().

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static void decode_bgr_bitstream ( HYuvContext *  s,
int  count 
) [static]

Definition at line 718 of file huffyuv.c.

References B, HYuvContext::bitstream_bpp, HYuvContext::decorrelate, G, HYuvContext::gb, get_vlc2(), R, VLC::table, HYuvContext::temp, HYuvContext::vlc, and VLC_BITS.

Referenced by decode_frame().

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static int decode_end ( AVCodecContext *  avctx  )  [static]

Definition at line 1027 of file huffyuv.c.

References av_freep(), HYuvContext::bitstream_buffer, common_end(), free_vlc(), AVCodecContext::priv_data, s, and HYuvContext::vlc.

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

Definition at line 781 of file huffyuv.c.

References DSPContext::add_bytes, add_left_prediction(), add_left_prediction_bgr32(), add_median_prediction(), av_fast_realloc(), av_log(), AV_LOG_ERROR, B, HYuvContext::bgr32, HYuvContext::bitstream_bpp, HYuvContext::bitstream_buffer, HYuvContext::bitstream_buffer_size, DSPContext::bswap_buf, CODEC_FLAG_GRAY, HYuvContext::context, decode_422_bitstream(), decode_bgr_bitstream(), decode_gray_bitstream(), draw_slice(), HYuvContext::dsp, emms_c, FF_INPUT_BUFFER_PADDING_SIZE, HYuvContext::flags, G, HYuvContext::gb, get_bits(), get_bits_count(), AVCodecContext::get_buffer, HYuvContext::height, height, init_get_bits(), HYuvContext::interlaced, HYuvContext::last_slice_end, LEFT, MEDIAN, picture, HYuvContext::picture, PLANE, HYuvContext::predictor, AVCodecContext::priv_data, R, read_huffman_tables(), AVCodecContext::release_buffer, s, skip_bits(), HYuvContext::temp, HYuvContext::width, width, width2, and HYuvContext::yuy2.

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static void decode_gray_bitstream ( HYuvContext *  s,
int  count 
) [static]

Definition at line 632 of file huffyuv.c.

References HYuvContext::gb, get_vlc2(), VLC::table, HYuvContext::temp, HYuvContext::vlc, and VLC_BITS.

Referenced by decode_frame().

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static int decode_init ( AVCodecContext *  avctx  )  [static]

Definition at line 378 of file huffyuv.c.

References alloc_temp(), HYuvContext::bgr32, AVCodecContext::bits_per_sample, HYuvContext::bitstream_bpp, AVCodecContext::coded_frame, common_init(), HYuvContext::context, HYuvContext::decorrelate, AVCodecContext::extradata, AVCodecContext::extradata_size, HYuvContext::height, HYuvContext::interlaced, LEFT, MEDIAN, HYuvContext::picture, AVCodecContext::pix_fmt, PIX_FMT_BGR24, PIX_FMT_RGBA32, PIX_FMT_YUV420P, PIX_FMT_YUV422, PIX_FMT_YUV422P, PLANE, HYuvContext::predictor, AVCodecContext::priv_data, read_huffman_tables(), read_old_huffman_tables(), s, HYuvContext::version, HYuvContext::vlc, and HYuvContext::yuy2.

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static void draw_slice ( HYuvContext *  s,
int  y 
) [static]

Definition at line 754 of file huffyuv.c.

References HYuvContext::avctx, HYuvContext::bitstream_bpp, AVCodecContext::draw_horiz_band, emms_c, HYuvContext::last_slice_end, NULL, offset, and HYuvContext::picture.

Referenced by decode_frame().

static int encode_422_bitstream ( HYuvContext *  s,
int  count 
) [static]

Definition at line 643 of file huffyuv.c.

References av_log(), AV_LOG_ERROR, HYuvContext::avctx, HYuvContext::bits, PutBitContext::buf, PutBitContext::buf_end, CODEC_FLAG2_NO_OUTPUT, CODEC_FLAG_PASS1, HYuvContext::context, HYuvContext::flags, AVCodecContext::flags2, HYuvContext::len, HYuvContext::pb, put_bits(), put_bits_count(), HYuvContext::stats, and HYuvContext::temp.

Referenced by encode_frame().

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static int encode_end ( AVCodecContext *  avctx  )  [static]

Definition at line 1210 of file huffyuv.c.

References av_freep(), common_end(), AVCodecContext::extradata, AVCodecContext::priv_data, s, and AVCodecContext::stats_out.

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static int encode_frame ( AVCodecContext *  avctx,
unsigned char *  buf,
int  buf_size,
void *  data 
) [static]

Definition at line 1042 of file huffyuv.c.

References av_log(), AV_LOG_ERROR, HYuvContext::avctx, HYuvContext::bits, HYuvContext::bitstream_bpp, DSPContext::bswap_buf, CODEC_FLAG2_NO_OUTPUT, CODEC_FLAG_PASS1, HYuvContext::context, DSPContext::diff_bytes, HYuvContext::dsp, emms_c, encode_422_bitstream(), encode_gray_bitstream(), FF_I_TYPE, HYuvContext::flags, AVCodecContext::flags2, flush_put_bits(), generate_bits_table(), generate_len_table(), HYuvContext::height, height, init_put_bits(), HYuvContext::interlaced, HYuvContext::len, MEDIAN, HYuvContext::pb, HYuvContext::picture, HYuvContext::picture_number, AVCodecContext::pix_fmt, PIX_FMT_YUV420P, PIX_FMT_YUV422P, PLANE, HYuvContext::predictor, AVCodecContext::priv_data, put_bits(), put_bits_count(), s, HYuvContext::stats, AVCodecContext::stats_out, store_table(), DSPContext::sub_hfyu_median_prediction, sub_left_prediction(), HYuvContext::temp, HYuvContext::width, width, and width2.

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static int encode_gray_bitstream ( HYuvContext *  s,
int  count 
) [static]

Definition at line 684 of file huffyuv.c.

References av_log(), AV_LOG_ERROR, HYuvContext::avctx, HYuvContext::bits, PutBitContext::buf, PutBitContext::buf_end, CODEC_FLAG2_NO_OUTPUT, CODEC_FLAG_PASS1, HYuvContext::context, HYuvContext::flags, AVCodecContext::flags2, HYuvContext::len, HYuvContext::pb, put_bits(), put_bits_count(), HYuvContext::stats, and HYuvContext::temp.

Referenced by encode_frame().

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static int encode_init ( AVCodecContext *  avctx  )  [static]

Definition at line 497 of file huffyuv.c.

References alloc_temp(), av_log(), AV_LOG_ERROR, AV_LOG_INFO, av_mallocz(), HYuvContext::avctx, HYuvContext::bits, AVCodecContext::bits_per_sample, HYuvContext::bitstream_bpp, AVCodecContext::codec, CODEC_FLAG_INTERLACED_ME, CODEC_FLAG_PASS1, CODEC_FLAG_PASS2, CODEC_ID_HUFFYUV, AVCodecContext::coded_frame, common_init(), HYuvContext::context, AVCodecContext::context_model, HYuvContext::decorrelate, AVCodecContext::extradata, AVCodecContext::extradata_size, FF_COMPLIANCE_EXPERIMENTAL, HYuvContext::flags, AVCodecContext::flags, generate_bits_table(), generate_len_table(), HYuvContext::height, AVCodec::id, HYuvContext::interlaced, HYuvContext::len, HYuvContext::picture, HYuvContext::picture_number, AVCodecContext::pix_fmt, PIX_FMT_YUV420P, PIX_FMT_YUV422P, AVCodecContext::prediction_method, HYuvContext::predictor, AVCodecContext::priv_data, s, HYuvContext::stats, AVCodecContext::stats_in, AVCodecContext::stats_out, store_table(), AVCodecContext::strict_std_compliance, HYuvContext::version, and HYuvContext::width.

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static int generate_bits_table ( uint32_t *  dst,
uint8_t *  len_table 
) [static]

Definition at line 221 of file huffyuv.c.

References av_log(), AV_LOG_ERROR, bits, and NULL.

Referenced by encode_frame(), encode_init(), and read_huffman_tables().

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static void generate_len_table ( uint8_t *  dst,
uint64_t *  stats,
int  size 
) [static]

Definition at line 239 of file huffyuv.c.

References INT64_MAX, and offset.

Referenced by encode_frame(), and encode_init().

static int read_huffman_tables ( HYuvContext *  s,
uint8_t *  src,
int  length 
) [static]

Definition at line 295 of file huffyuv.c.

References HYuvContext::bits, free_vlc(), generate_bits_table(), get_bits_count(), init_get_bits(), init_vlc(), HYuvContext::len, read_len_table(), HYuvContext::vlc, and VLC_BITS.

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static void read_len_table ( uint8_t *  dst,
GetBitContext *  gb 
) [static]

Definition at line 207 of file huffyuv.c.

References get_bits().

Referenced by read_huffman_tables(), and read_old_huffman_tables().

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static int read_old_huffman_tables ( HYuvContext *  s  )  [static]

Definition at line 319 of file huffyuv.c.

References HYuvContext::bits, HYuvContext::bitstream_bpp, classic_add_chroma, classic_add_luma, classic_shift_chroma, classic_shift_luma, fprintf, free_vlc(), init_get_bits(), init_vlc(), HYuvContext::len, memcpy, read_len_table(), HYuvContext::vlc, and VLC_BITS.

Referenced by decode_init().

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static int store_table ( HYuvContext *  s,
uint8_t *  len,
uint8_t *  buf 
) [static]

Definition at line 474 of file huffyuv.c.

Referenced by encode_frame(), and encode_init().

static int sub_left_prediction ( HYuvContext *  s,
uint8_t *  dst,
uint8_t *  src,
int  w,
int  left 
) [inline, static]

Definition at line 187 of file huffyuv.c.

References DSPContext::diff_bytes, and HYuvContext::dsp.

Referenced by encode_frame().

Variable Documentation

const unsigned char classic_add_chroma[256] [static]

Initial value:

 {
    3,  1,  2,  2,  2,  2,  3,  3,  7,  5,  7,  5,  8,  6, 11,  9,
    7, 13, 11, 10,  9,  8,  7,  5,  9,  7,  6,  4,  7,  5,  8,  7,
   11,  8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
   43, 45, 76, 81, 46, 82, 75, 55, 56,144, 58, 80, 60, 74,147, 63,
  143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
   80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
   17, 14,  5,  6,100, 54, 47, 50, 51, 53,106,107,108,109,110,111,
  112,113,114,115,  4,117,118, 92, 94,121,122,  3,124,103,  2,  1,
    0,129,130,131,120,119,126,125,136,137,138,139,140,141,142,134,
  135,132,133,104, 64,101, 62, 57,102, 95, 93, 59, 61, 28, 97, 96,
   52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
   19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10,  9,  8, 36,
    7,128,127,105,123,116, 35, 34, 33,145, 31, 79, 42,146, 78, 26,
   83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
   14, 16, 17, 18, 20, 21, 12, 14, 15,  9, 10,  6,  9,  6,  5,  8,
    6, 12,  8, 10,  7,  9,  6,  4,  6,  2,  2,  3,  3,  3,  3,  2,
}

Definition at line 110 of file huffyuv.c.

Referenced by read_old_huffman_tables().

const unsigned char classic_add_luma[256] [static]

Initial value:

 {
    3,  9,  5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
   73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
   68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
   35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
   37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
   35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
   27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
   15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
   12, 17, 19, 13,  4,  9,  2, 11,  1,  7,  8,  0, 16,  3, 14,  6,
   12, 10,  5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
   18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
   28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
   28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
   62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
   54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
   46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13,  7,  8,
}

Definition at line 91 of file huffyuv.c.

Referenced by read_old_huffman_tables().

const unsigned char classic_shift_chroma[] [static]

Initial value:

 {
  66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
  56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
  214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0
}

Definition at line 85 of file huffyuv.c.

Referenced by read_old_huffman_tables().

const unsigned char classic_shift_luma[] [static]

Initial value:

 {
  34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
  16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
  69,68, 0
}

Definition at line 79 of file huffyuv.c.

Referenced by read_old_huffman_tables().

AVCodec ffvhuff_decoder

Initial value:

 {
    "ffvhuff",
    CODEC_TYPE_VIDEO,
    CODEC_ID_FFVHUFF,
    sizeof(HYuvContext),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
    CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
    NULL
}

Definition at line 1235 of file huffyuv.c.

Referenced by avcodec_register_all().

AVCodec huffyuv_decoder

Initial value:

 {
    "huffyuv",
    CODEC_TYPE_VIDEO,
    CODEC_ID_HUFFYUV,
    sizeof(HYuvContext),
    decode_init,
    NULL,
    decode_end,
    decode_frame,
    CODEC_CAP_DR1 | CODEC_CAP_DRAW_HORIZ_BAND,
    NULL
}

Definition at line 1222 of file huffyuv.c.

Referenced by avcodec_register_all().

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