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Macros | Functions | Variables
huffyuvdec.c File Reference

huffyuv decoder More...

#include "avcodec.h"
#include "get_bits.h"
#include "huffyuv.h"
#include "thread.h"

Go to the source code of this file.

Macros

#define classic_shift_luma_table_size   42
 
#define classic_shift_chroma_table_size   59
 
#define READ_2PIX(dst0, dst1, plane1)
 

Functions

static int read_len_table (uint8_t *dst, GetBitContext *gb)
 
static int generate_joint_tables (HYuvContext *s)
 
static int read_huffman_tables (HYuvContext *s, const uint8_t *src, int length)
 
static int read_old_huffman_tables (HYuvContext *s)
 
static av_cold int decode_init (AVCodecContext *avctx)
 
static av_cold int decode_init_thread_copy (AVCodecContext *avctx)
 
static void decode_422_bitstream (HYuvContext *s, int count)
 
static void decode_gray_bitstream (HYuvContext *s, int count)
 
static av_always_inline void decode_bgr_1 (HYuvContext *s, int count, int decorrelate, int alpha)
 
static void decode_bgr_bitstream (HYuvContext *s, int count)
 
static void draw_slice (HYuvContext *s, AVFrame *frame, int y)
 
static int decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
 
static av_cold int decode_end (AVCodecContext *avctx)
 

Variables

static const unsigned char classic_shift_luma [classic_shift_luma_table_size+FF_INPUT_BUFFER_PADDING_SIZE]
 
static const unsigned char classic_shift_chroma [classic_shift_chroma_table_size+FF_INPUT_BUFFER_PADDING_SIZE]
 
static const unsigned char classic_add_luma [256]
 
static const unsigned char classic_add_chroma [256]
 

Detailed Description

huffyuv decoder

Definition in file huffyuvdec.c.

Macro Definition Documentation

#define classic_shift_luma_table_size   42

Definition at line 36 of file huffyuvdec.c.

Referenced by read_old_huffman_tables().

#define classic_shift_chroma_table_size   59

Definition at line 44 of file huffyuvdec.c.

Referenced by read_old_huffman_tables().

#define READ_2PIX (   dst0,
  dst1,
  plane1 
)
Value:
{\
uint16_t code = get_vlc2(&s->gb, s->vlc[3+plane1].table, VLC_BITS, 1);\
if(code != 0xffff){\
dst0 = code>>8;\
dst1 = code;\
}else{\
dst0 = get_vlc2(&s->gb, s->vlc[0].table, VLC_BITS, 3);\
dst1 = get_vlc2(&s->gb, s->vlc[plane1].table, VLC_BITS, 3);\
}\
}

Definition at line 387 of file huffyuvdec.c.

Referenced by decode_422_bitstream(), and decode_gray_bitstream().

Function Documentation

static int read_len_table ( uint8_t dst,
GetBitContext gb 
)
static

Definition at line 90 of file huffyuvdec.c.

Referenced by read_huffman_tables(), and read_old_huffman_tables().

static int generate_joint_tables ( HYuvContext s)
static

Definition at line 109 of file huffyuvdec.c.

Referenced by read_huffman_tables(), and read_old_huffman_tables().

static int read_huffman_tables ( HYuvContext s,
const uint8_t src,
int  length 
)
static

Definition at line 187 of file huffyuvdec.c.

Referenced by decode_frame(), decode_init(), and decode_init_thread_copy().

static int read_old_huffman_tables ( HYuvContext s)
static

Definition at line 213 of file huffyuvdec.c.

Referenced by decode_init(), and decode_init_thread_copy().

static av_cold int decode_init ( AVCodecContext avctx)
static

Definition at line 252 of file huffyuvdec.c.

static av_cold int decode_init_thread_copy ( AVCodecContext avctx)
static

Definition at line 360 of file huffyuvdec.c.

static void decode_422_bitstream ( HYuvContext s,
int  count 
)
static

Definition at line 398 of file huffyuvdec.c.

Referenced by decode_frame().

static void decode_gray_bitstream ( HYuvContext s,
int  count 
)
static

Definition at line 417 of file huffyuvdec.c.

Referenced by decode_frame().

static av_always_inline void decode_bgr_1 ( HYuvContext s,
int  count,
int  decorrelate,
int  alpha 
)
static

Definition at line 434 of file huffyuvdec.c.

Referenced by decode_bgr_bitstream().

static void decode_bgr_bitstream ( HYuvContext s,
int  count 
)
static

Definition at line 458 of file huffyuvdec.c.

Referenced by decode_frame().

static void draw_slice ( HYuvContext s,
AVFrame frame,
int  y 
)
static

Definition at line 473 of file huffyuvdec.c.

Referenced by decode_frame().

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

Definition at line 502 of file huffyuvdec.c.

static av_cold int decode_end ( AVCodecContext avctx)
static

Definition at line 751 of file huffyuvdec.c.

Variable Documentation

const unsigned char classic_shift_luma[classic_shift_luma_table_size+FF_INPUT_BUFFER_PADDING_SIZE]
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,
0,0,0,0,0,0,0,0,
}

Definition at line 37 of file huffyuvdec.c.

Referenced by read_old_huffman_tables().

const unsigned char classic_shift_chroma[classic_shift_chroma_table_size+FF_INPUT_BUFFER_PADDING_SIZE]
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,
0,0,0,0,0,0,0,0,
}

Definition at line 45 of file huffyuvdec.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 52 of file huffyuvdec.c.

Referenced by read_old_huffman_tables().

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 71 of file huffyuvdec.c.

Referenced by read_old_huffman_tables().