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Indeo 2 decoder by (Kostya <> kostya.shishkov gmail com) 

Originally committed as revision 4141 to svn://svn.ffmpeg.org/ffmpeg/trunk
tags/v0.5
Michael Niedermayer 20 years ago
parent
29df259923
commit
856dbbff7f
6 changed files with 293 additions and 1 deletions
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  1. +1
    -1
      libavcodec/Makefile
  2. +1
    -0
      libavcodec/allcodecs.c
  3. +2
    -0
      libavcodec/avcodec.h
  4. +214
    -0
      libavcodec/indeo2.c
  5. +74
    -0
      libavcodec/indeo2data.h
  6. +1
    -0
      libavformat/avienc.c

+ 1
- 1
libavcodec/Makefile View File

@@ -23,7 +23,7 @@ OBJS= bitstream.o utils.o mem.o allcodecs.o \
flac.o vp3dsp.o integer.o snow.o tscc.o sonic.o ulti.o h264idct.o \
qdrw.o xl.o rangecoder.o png.o pnm.o qpeg.o vc9.o h263.o h261.o \
msmpeg4.o h263dec.o svq1.o rv10.o wmadec.o indeo3.o shorten.o loco.o \
alac.o wnv1.o ws-snd1.o aasc.o
alac.o wnv1.o ws-snd1.o aasc.o indeo2.o

AMROBJS=
ifeq ($(AMR_NB),yes)


+ 1
- 0
libavcodec/allcodecs.c View File

@@ -122,6 +122,7 @@ void avcodec_register_all(void)
register_avcodec(&svq3_decoder);
register_avcodec(&wmav1_decoder);
register_avcodec(&wmav2_decoder);
register_avcodec(&indeo2_decoder);
register_avcodec(&indeo3_decoder);
register_avcodec(&tscc_decoder);
register_avcodec(&ulti_decoder);


+ 2
- 0
libavcodec/avcodec.h View File

@@ -107,6 +107,7 @@ enum CodecID {
CODEC_ID_LOCO,
CODEC_ID_WNV1,
CODEC_ID_AASC,
CODEC_ID_INDEO2,

/* various pcm "codecs" */
CODEC_ID_PCM_S16LE= 0x10000,
@@ -2019,6 +2020,7 @@ extern AVCodec wnv1_decoder;
extern AVCodec aasc_decoder;
extern AVCodec alac_decoder;
extern AVCodec ws_snd1_decoder;
extern AVCodec indeo2_decoder;

/* pcm codecs */
#define PCM_CODEC(id, name) \


+ 214
- 0
libavcodec/indeo2.c View File

@@ -0,0 +1,214 @@
/*
* Indel Indeo 2 codec
* Copyright (c) 2005 Konstantin Shishkov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/**
* @file indeo2.c
* Intel Indeo 2 decoder.
*/
#include "avcodec.h"
#include "bitstream.h"
#include "indeo2data.h"

typedef struct Ir2Context{
AVCodecContext *avctx;
AVFrame picture;
GetBitContext gb;
int decode_delta;
} Ir2Context;

#define CODE_VLC_BITS 14
static VLC ir2_vlc;

/* Indeo 2 codes are in range 0x01..0x7F and 0x81..0x90 */
static inline int ir2_get_code(GetBitContext *gb)
{
int code;
code = get_vlc2(gb, ir2_vlc.table, CODE_VLC_BITS, 1) + 1;
if (code >= 0x80)
return (code + 1);
return code;
}
#define CLAMP_TO_BYTE(value) \
if (value > 255) \
value = 255; \
else if (value < 0) \
value = 0; \

static void ir2_decode_plane(Ir2Context *ctx, int width, int height, uint8_t *dst, int stride,
const uint8_t *table)
{
int i;
int j;
int out = 0;
int c;
int t;
/* first line contain absolute values, other lines contain deltas */
while (out < width){
c = ir2_get_code(&ctx->gb);
if(c > 0x80) { /* we have a run */
c -= 0x80;
for (i = 0; i < c * 2; i++)
dst[out++] = 0x80;
} else { /* copy two values from table */
dst[out++] = table[c * 2];
dst[out++] = table[(c * 2) + 1];
}
}
dst += stride;
for (j = 1; j < height; j++){
out = 0;
while (out < width){
c = ir2_get_code(&ctx->gb);
if(c > 0x80) { /* we have a skip */
c -= 0x80;
for (i = 0; i < c * 2; i++) {
dst[out] = dst[out - stride];
out++;
}
} else { /* add two deltas from table */
t = dst[out - stride] + (table[c * 2] - 128);
CLAMP_TO_BYTE(t);
dst[out] = t;
out++;
t = dst[out - stride] + (table[(c * 2) + 1] - 128);
CLAMP_TO_BYTE(t);
dst[out] = t;
out++;
}
}
dst += stride;
}
}

static void ir2_decode_plane_inter(Ir2Context *ctx, int width, int height, uint8_t *dst, int stride,
const uint8_t *table)
{
int j;
int out = 0;
int c;
int t;
for (j = 0; j < height; j++){
out = 0;
while (out < width){
c = ir2_get_code(&ctx->gb);
if(c > 0x80) { /* we have a skip */
c -= 0x80;
out += c * 2;
} else { /* add two deltas from table */
t = dst[out] + (table[c * 2] - 128);
CLAMP_TO_BYTE(t);
dst[out] = t;
out++;
t = dst[out] + (table[(c * 2) + 1] - 128);
CLAMP_TO_BYTE(t);
dst[out] = t;
out++;
}
}
dst += stride;
}
}

static int ir2_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
Ir2Context * const s = avctx->priv_data;
AVFrame *picture = data;
AVFrame * const p= (AVFrame*)&s->picture;
int start;
int i;

if(p->data[0])
avctx->release_buffer(avctx, p);

p->reference = 1;
p->buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE;
if (avctx->reget_buffer(avctx, p)) {
av_log(s->avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
return -1;
}

s->decode_delta = buf[18];
/* decide whether frame uses deltas or not */
for (i = 0; i < buf_size; i++)
buf[i] = ff_reverse[buf[i]];
start = 48; /* hardcoded for now */

init_get_bits(&s->gb, buf + start, buf_size - start);

if (s->decode_delta) { /* intraframe */
ir2_decode_plane(s, avctx->width, avctx->height,
s->picture.data[0], s->picture.linesize[0], ir2_luma_table);
/* swapped U and V */
ir2_decode_plane(s, avctx->width >> 2, avctx->height >> 2,
s->picture.data[2], s->picture.linesize[2], ir2_luma_table);
ir2_decode_plane(s, avctx->width >> 2, avctx->height >> 2,
s->picture.data[1], s->picture.linesize[1], ir2_luma_table);
} else { /* interframe */
ir2_decode_plane_inter(s, avctx->width, avctx->height,
s->picture.data[0], s->picture.linesize[0], ir2_luma_table);
/* swapped U and V */
ir2_decode_plane_inter(s, avctx->width >> 2, avctx->height >> 2,
s->picture.data[2], s->picture.linesize[2], ir2_luma_table);
ir2_decode_plane_inter(s, avctx->width >> 2, avctx->height >> 2,
s->picture.data[1], s->picture.linesize[1], ir2_luma_table);
}

*picture= *(AVFrame*)&s->picture;
*data_size = sizeof(AVPicture);

return buf_size;
}

static int ir2_decode_init(AVCodecContext *avctx){
Ir2Context * const ic = avctx->priv_data;

ic->avctx = avctx;

avctx->pix_fmt= PIX_FMT_YUV410P;
if (!ir2_vlc.table)
init_vlc(&ir2_vlc, CODE_VLC_BITS, IR2_CODES,
&ir2_codes[0][1], 4, 2,
&ir2_codes[0][0], 4, 2, 1);

return 0;
}

AVCodec indeo2_decoder = {
"indeo2",
CODEC_TYPE_VIDEO,
CODEC_ID_INDEO2,
sizeof(Ir2Context),
ir2_decode_init,
NULL,
NULL,
ir2_decode_frame,
CODEC_CAP_DR1,
};

+ 74
- 0
libavcodec/indeo2data.h View File

@@ -0,0 +1,74 @@
#define IR2_CODES 143
static const uint16_t ir2_codes[IR2_CODES][2] = {
{0x0000, 3}, {0x0001, 3}, {0x0003, 3}, {0x0010, 5},
{0x0012, 5}, {0x0013, 5}, {0x0016, 5}, {0x0017, 5},
{0x0031, 6}, {0x0032, 6}, {0x0033, 6}, {0x0034, 6},
{0x0035, 6}, {0x0036, 6}, {0x00E0, 8}, {0x00E1, 8},
{0x00E4, 8}, {0x00E5, 8}, {0x00E6, 8}, {0x00E7, 8},
{0x00E9, 8}, {0x00EA, 8}, {0x00EC, 8}, {0x00ED, 8},
{0x00EF, 8}, {0x01E0, 9}, {0x01E2, 9}, {0x01E3, 9},
{0x01E5, 9}, {0x01E6, 9}, {0x01E8, 9}, {0x01E9, 9},
{0x01EB, 9}, {0x01EC, 9}, {0x01EE, 9}, {0x01EF, 9},
{0x03E0, 10}, {0x03E1, 10}, {0x03E2, 10}, {0x03E3, 10},
{0x03E4, 10}, {0x03E5, 10}, {0x03E6, 10}, {0x03E7, 10},
{0x03E8, 10}, {0x03E9, 10}, {0x03EA, 10}, {0x03EB, 10},
{0x03EC, 10}, {0x03ED, 10}, {0x03EE, 10}, {0x03EF, 10},
{0x1F80, 13}, {0x1F81, 13}, {0x1F82, 13}, {0x1F83, 13},
{0x1F84, 13}, {0x1F85, 13}, {0x1F86, 13}, {0x1F87, 13},
{0x1F88, 13}, {0x1F89, 13}, {0x1F8A, 13}, {0x1F8B, 13},
{0x1F8C, 13}, {0x1F8D, 13}, {0x1F8E, 13}, {0x1F8F, 13},
{0x1F90, 13}, {0x1F91, 13}, {0x1F92, 13}, {0x1F93, 13},
{0x1F94, 13}, {0x1F95, 13}, {0x1F96, 13}, {0x1F97, 13},
{0x1F98, 13}, {0x1F99, 13}, {0x1F9A, 13}, {0x1F9B, 13},
{0x1F9C, 13}, {0x1F9D, 13}, {0x1F9E, 13}, {0x1F9F, 13},
{0x1FA0, 13}, {0x1FA1, 13}, {0x1FA2, 13}, {0x1FA3, 13},
{0x1FA4, 13}, {0x1FA5, 13}, {0x1FA6, 13}, {0x1FA7, 13},
{0x1FA8, 13}, {0x1FA9, 13}, {0x1FAA, 13}, {0x1FAB, 13},
{0x1FAC, 13}, {0x1FAD, 13}, {0x1FAE, 13}, {0x1FAF, 13},
{0x1FB0, 13}, {0x1FB1, 13}, {0x1FB2, 13}, {0x1FB3, 13},
{0x1FB4, 13}, {0x1FB5, 13}, {0x1FB6, 13}, {0x1FB7, 13},
{0x1FB8, 13}, {0x1FB9, 13}, {0x1FBA, 13}, {0x1FBB, 13},
{0x1FBC, 13}, {0x1FBD, 13}, {0x1FBE, 13}, {0x1FBF, 13},
{0x3F80, 14}, {0x3F81, 14}, {0x3F82, 14}, {0x3F83, 14},
{0x3F84, 14}, {0x3F85, 14}, {0x3F86, 14}, {0x3F87, 14},
{0x3F88, 14}, {0x3F89, 14}, {0x3F8A, 14}, {0x0002, 3},
{0x0011, 5}, {0x0014, 5}, {0x0015, 5}, {0x0030, 6},
{0x0037, 6}, {0x00E2, 8}, {0x00E3, 8}, {0x00E8, 8},
{0x00EB, 8}, {0x00EE, 8}, {0x01E1, 9}, {0x01E4, 9},
{0x01E7, 9}, {0x01EA, 9}, {0x01ED, 9}
};

static const uint8_t ir2_luma_table[256] = {
0x80, 0x80, 0x84, 0x84, 0x7C, 0x7C, 0x7F, 0x85,
0x81, 0x7B, 0x85, 0x7F, 0x7B, 0x81, 0x8C, 0x8C,
0x74, 0x74, 0x83, 0x8D, 0x7D, 0x73, 0x8D, 0x83,
0x73, 0x7D, 0x77, 0x89, 0x89, 0x77, 0x89, 0x77,
0x77, 0x89, 0x8C, 0x95, 0x74, 0x6B, 0x95, 0x8C,
0x6B, 0x74, 0x7C, 0x90, 0x84, 0x70, 0x90, 0x7C,
0x70, 0x84, 0x96, 0x96, 0x6A, 0x6A, 0x82, 0x98,
0x7E, 0x68, 0x98, 0x82, 0x68, 0x7E, 0x97, 0xA2,
0x69, 0x5E, 0xA2, 0x97, 0x5E, 0x69, 0xA2, 0xA2,
0x5E, 0x5E, 0x8B, 0xA3, 0x75, 0x5D, 0xA3, 0x8B,
0x5D, 0x75, 0x71, 0x95, 0x8F, 0x6B, 0x95, 0x71,
0x6B, 0x8F, 0x78, 0x9D, 0x88, 0x63, 0x9D, 0x78,
0x63, 0x88, 0x7F, 0xA7, 0x81, 0x59, 0xA7, 0x7F,
0x59, 0x81, 0xA4, 0xB1, 0x5C, 0x4F, 0xB1, 0xA4,
0x4F, 0x5C, 0x96, 0xB1, 0x6A, 0x4F, 0xB1, 0x96,
0x4F, 0x6A, 0xB2, 0xB2, 0x4E, 0x4E, 0x65, 0x9B,
0x9B, 0x65, 0x9B, 0x65, 0x65, 0x9B, 0x89, 0xB4,
0x77, 0x4C, 0xB4, 0x89, 0x4C, 0x77, 0x6A, 0xA3,
0x96, 0x5D, 0xA3, 0x6A, 0x5D, 0x96, 0x73, 0xAC,
0x8D, 0x54, 0xAC, 0x73, 0x54, 0x8D, 0xB4, 0xC3,
0x4C, 0x3D, 0xC3, 0xB4, 0x3D, 0x4C, 0xA4, 0xC3,
0x5C, 0x3D, 0xC3, 0xA4, 0x3D, 0x5C, 0xC4, 0xC4,
0x3C, 0x3C, 0x96, 0xC6, 0x6A, 0x3A, 0xC6, 0x96,
0x3A, 0x6A, 0x7C, 0xBA, 0x84, 0x46, 0xBA, 0x7C,
0x46, 0x84, 0x5B, 0xAB, 0xA5, 0x55, 0xAB, 0x5B,
0x55, 0xA5, 0x63, 0xB4, 0x9D, 0x4C, 0xB4, 0x63,
0x4C, 0x9D, 0x86, 0xCA, 0x7A, 0x36, 0xCA, 0x86,
0x36, 0x7A, 0xB6, 0xD7, 0x4A, 0x29, 0xD7, 0xB6,
0x29, 0x4A, 0xC8, 0xD7, 0x38, 0x29, 0xD7, 0xC8,
0x29, 0x38, 0xA4, 0xD8, 0x5C, 0x28, 0xD8, 0xA4,
0x28, 0x5C, 0x6C, 0xC1, 0x94, 0x3F, 0xC1, 0x6C,
0x3F, 0x94, 0xD9, 0xD9, 0x27, 0x27, 0x80, 0x80
};

+ 1
- 0
libavformat/avienc.c View File

@@ -180,6 +180,7 @@ const CodecTag codec_bmp_tags[] = {
{ CODEC_ID_LOCO, MKTAG('L', 'O', 'C', 'O') },
{ CODEC_ID_WNV1, MKTAG('W', 'N', 'V', '1') },
{ CODEC_ID_AASC, MKTAG('A', 'A', 'S', 'C') },
{ CODEC_ID_INDEO2, MKTAG('R', 'T', '2', '1') },
{ CODEC_ID_RAWVIDEO, 0 },
{ 0, 0 },
};


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