* Copyright (c) 2003 Alex Beregszaszi
* Copyright (c) 2003-2004 Michael Niedermayer
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg 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
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Support for external huffman table, various fixes (AVID workaround),
* aspecting, new decode_frame mechanism and apple mjpeg-b support
* @file mjpeg.c
* MJPEG encoder and decoder.
*/
-
+
//#define DEBUG
#include <assert.h>
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
+#include "bytestream.h"
/* use two quantizer tables (one for luminance and one for chrominance) */
/* not yet working */
#undef TWOMATRIXES
typedef struct MJpegContext {
- uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
+ uint8_t huff_size_dc_luminance[12]; //FIXME use array [3] instead of lumi / chrom, for easier addressing
uint16_t huff_code_dc_luminance[12];
uint8_t huff_size_dc_chrominance[12];
uint16_t huff_code_dc_chrominance[12];
/* JPEG marker codes */
typedef enum {
/* start of frame */
- SOF0 = 0xc0, /* baseline */
- SOF1 = 0xc1, /* extended sequential, huffman */
- SOF2 = 0xc2, /* progressive, huffman */
- SOF3 = 0xc3, /* lossless, huffman */
+ SOF0 = 0xc0, /* baseline */
+ SOF1 = 0xc1, /* extended sequential, huffman */
+ SOF2 = 0xc2, /* progressive, huffman */
+ SOF3 = 0xc3, /* lossless, huffman */
- SOF5 = 0xc5, /* differential sequential, huffman */
- SOF6 = 0xc6, /* differential progressive, huffman */
- SOF7 = 0xc7, /* differential lossless, huffman */
- JPG = 0xc8, /* reserved for JPEG extension */
- SOF9 = 0xc9, /* extended sequential, arithmetic */
- SOF10 = 0xca, /* progressive, arithmetic */
- SOF11 = 0xcb, /* lossless, arithmetic */
+ SOF5 = 0xc5, /* differential sequential, huffman */
+ SOF6 = 0xc6, /* differential progressive, huffman */
+ SOF7 = 0xc7, /* differential lossless, huffman */
+ JPG = 0xc8, /* reserved for JPEG extension */
+ SOF9 = 0xc9, /* extended sequential, arithmetic */
+ SOF10 = 0xca, /* progressive, arithmetic */
+ SOF11 = 0xcb, /* lossless, arithmetic */
- SOF13 = 0xcd, /* differential sequential, arithmetic */
- SOF14 = 0xce, /* differential progressive, arithmetic */
- SOF15 = 0xcf, /* differential lossless, arithmetic */
+ SOF13 = 0xcd, /* differential sequential, arithmetic */
+ SOF14 = 0xce, /* differential progressive, arithmetic */
+ SOF15 = 0xcf, /* differential lossless, arithmetic */
- DHT = 0xc4, /* define huffman tables */
+ DHT = 0xc4, /* define huffman tables */
- DAC = 0xcc, /* define arithmetic-coding conditioning */
+ DAC = 0xcc, /* define arithmetic-coding conditioning */
/* restart with modulo 8 count "m" */
RST0 = 0xd0,
RST6 = 0xd6,
RST7 = 0xd7,
- SOI = 0xd8, /* start of image */
- EOI = 0xd9, /* end of image */
- SOS = 0xda, /* start of scan */
- DQT = 0xdb, /* define quantization tables */
- DNL = 0xdc, /* define number of lines */
- DRI = 0xdd, /* define restart interval */
- DHP = 0xde, /* define hierarchical progression */
- EXP = 0xdf, /* expand reference components */
+ SOI = 0xd8, /* start of image */
+ EOI = 0xd9, /* end of image */
+ SOS = 0xda, /* start of scan */
+ DQT = 0xdb, /* define quantization tables */
+ DNL = 0xdc, /* define number of lines */
+ DRI = 0xdd, /* define restart interval */
+ DHP = 0xde, /* define hierarchical progression */
+ EXP = 0xdf, /* expand reference components */
APP0 = 0xe0,
APP1 = 0xe1,
JPG4 = 0xf4,
JPG5 = 0xf5,
JPG6 = 0xf6,
- JPG7 = 0xf7,
- JPG8 = 0xf8,
+ SOF48 = 0xf7, ///< JPEG-LS
+ LSE = 0xf8, ///< JPEG-LS extension parameters
JPG9 = 0xf9,
JPG10 = 0xfa,
JPG11 = 0xfb,
JPG12 = 0xfc,
JPG13 = 0xfd,
- COM = 0xfe, /* comment */
+ COM = 0xfe, /* comment */
- TEM = 0x01, /* temporary private use for arithmetic coding */
+ TEM = 0x01, /* temporary private use for arithmetic coding */
/* 0x02 -> 0xbf reserved */
} JPEG_MARKER;
0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea,
0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
- 0xf9, 0xfa
+ 0xf9, 0xfa
};
static const uint8_t bits_ac_chrominance[17] =
0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda,
0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8,
- 0xf9, 0xfa
+ 0xf9, 0xfa
};
/* isn't this function nicer than the one in the libjpeg ? */
int mjpeg_init(MpegEncContext *s)
{
MJpegContext *m;
-
+
m = av_malloc(sizeof(MJpegContext));
if (!m)
return -1;
-
+
s->min_qcoeff=-1023;
s->max_qcoeff= 1023;
m->huff_code_ac_chrominance,
bits_ac_chrominance,
val_ac_chrominance);
-
+
s->mjpeg_ctx = m;
return 0;
}
size = 2;
size += put_huffman_table(s, 0, 0, bits_dc_luminance, val_dc_luminance);
size += put_huffman_table(s, 0, 1, bits_dc_chrominance, val_dc_chrominance);
-
+
size += put_huffman_table(s, 1, 0, bits_ac_luminance, val_ac_luminance);
size += put_huffman_table(s, 1, 1, bits_ac_chrominance, val_ac_chrominance);
ptr[0] = size >> 8;
/* JFIF header */
put_marker(p, APP0);
put_bits(p, 16, 16);
- put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */
+ ff_put_string(p, "JFIF", 1); /* this puts the trailing zero-byte too */
put_bits(p, 16, 0x0201); /* v 1.02 */
put_bits(p, 8, 0); /* units type: 0 - aspect ratio */
put_bits(p, 16, s->avctx->sample_aspect_ratio.num);
flush_put_bits(p);
ptr = pbBufPtr(p);
put_bits(p, 16, 0); /* patched later */
- put_string(p, LIBAVCODEC_IDENT, 1);
+ ff_put_string(p, LIBAVCODEC_IDENT, 1);
size = strlen(LIBAVCODEC_IDENT)+3;
ptr[0] = size >> 8;
ptr[1] = size;
}
- if( s->avctx->pix_fmt == PIX_FMT_YUV420P
+ if( s->avctx->pix_fmt == PIX_FMT_YUV420P
||s->avctx->pix_fmt == PIX_FMT_YUV422P
||s->avctx->pix_fmt == PIX_FMT_YUV444P){
put_marker(p, COM);
flush_put_bits(p);
ptr = pbBufPtr(p);
put_bits(p, 16, 0); /* patched later */
- put_string(p, "CS=ITU601", 1);
+ ff_put_string(p, "CS=ITU601", 1);
size = strlen("CS=ITU601")+3;
ptr[0] = size >> 8;
ptr[1] = size;
void mjpeg_picture_header(MpegEncContext *s)
{
- const int lossless= s->avctx->codec_id == CODEC_ID_LJPEG;
+ const int lossless= s->avctx->codec_id != CODEC_ID_MJPEG;
+ const int ls = s->avctx->codec_id == CODEC_ID_JPEGLS;
+
+ assert(!(ls && s->mjpeg_write_tables));
put_marker(&s->pb, SOI);
if (!s->mjpeg_data_only_frames)
{
- jpeg_put_comments(s);
+ jpeg_put_comments(s);
if (s->mjpeg_write_tables) jpeg_table_header(s);
- put_marker(&s->pb, lossless ? SOF3 : SOF0);
+ switch(s->avctx->codec_id){
+ case CODEC_ID_MJPEG: put_marker(&s->pb, SOF0 ); break;
+ case CODEC_ID_LJPEG: put_marker(&s->pb, SOF3 ); break;
+ case CODEC_ID_JPEGLS: put_marker(&s->pb, SOF48); break;
+ default: assert(0);
+ }
put_bits(&s->pb, 16, 17);
- if(lossless && s->avctx->pix_fmt == PIX_FMT_RGBA32)
+ if(lossless && s->avctx->pix_fmt == PIX_FMT_RGB32)
put_bits(&s->pb, 8, 9); /* 9 bits/component RCT */
else
put_bits(&s->pb, 8, 8); /* 8 bits/component */
put_bits(&s->pb, 16, s->height);
put_bits(&s->pb, 16, s->width);
put_bits(&s->pb, 8, 3); /* 3 components */
-
+
/* Y component */
put_bits(&s->pb, 8, 1); /* component number */
put_bits(&s->pb, 4, s->mjpeg_hsample[0]); /* H factor */
put_bits(&s->pb, 4, s->mjpeg_vsample[0]); /* V factor */
put_bits(&s->pb, 8, 0); /* select matrix */
-
+
/* Cb component */
put_bits(&s->pb, 8, 2); /* component number */
put_bits(&s->pb, 4, s->mjpeg_hsample[1]); /* H factor */
put_marker(&s->pb, SOS);
put_bits(&s->pb, 16, 12); /* length */
put_bits(&s->pb, 8, 3); /* 3 components */
-
+
/* Y component */
put_bits(&s->pb, 8, 1); /* index */
put_bits(&s->pb, 4, 0); /* DC huffman table index */
put_bits(&s->pb, 4, 0); /* AC huffman table index */
-
+
/* Cb component */
put_bits(&s->pb, 8, 2); /* index */
put_bits(&s->pb, 4, 1); /* DC huffman table index */
put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */
-
+
/* Cr component */
put_bits(&s->pb, 8, 3); /* index */
put_bits(&s->pb, 4, 1); /* DC huffman table index */
put_bits(&s->pb, 4, lossless ? 0 : 1); /* AC huffman table index */
- put_bits(&s->pb, 8, lossless ? s->avctx->prediction_method+1 : 0); /* Ss (not used) */
- put_bits(&s->pb, 8, lossless ? 0 : 63); /* Se (not used) */
+ put_bits(&s->pb, 8, (lossless && !ls) ? s->avctx->prediction_method+1 : 0); /* Ss (not used) */
+
+ switch(s->avctx->codec_id){
+ case CODEC_ID_MJPEG: put_bits(&s->pb, 8, 63); break; /* Se (not used) */
+ case CODEC_ID_LJPEG: put_bits(&s->pb, 8, 0); break; /* not used */
+ case CODEC_ID_JPEGLS: put_bits(&s->pb, 8, 1); break; /* ILV = line interleaved */
+ default: assert(0);
+ }
+
put_bits(&s->pb, 8, 0); /* Ah/Al (not used) */
+
+ //FIXME DC/AC entropy table selectors stuff in jpegls
}
static void escape_FF(MpegEncContext *s, int start)
int i, ff_count;
uint8_t *buf= s->pb.buf + start;
int align= (-(size_t)(buf))&3;
-
+
assert((size&7) == 0);
size >>= 3;
-
+
ff_count=0;
for(i=0; i<size && i<align; i++){
if(buf[i]==0xFF) ff_count++;
}
if(ff_count==0) return;
-
+
/* skip put bits */
for(i=0; i<ff_count-3; i+=4)
put_bits(&s->pb, 32, 0);
put_bits(&s->pb, (ff_count-i)*8, 0);
- flush_put_bits(&s->pb);
+ flush_put_bits(&s->pb);
for(i=size-1; ff_count; i--){
int v= buf[i];
flush_put_bits(&s->pb);
assert((s->header_bits&7)==0);
-
+
escape_FF(s, s->header_bits>>3);
put_marker(&s->pb, EOI);
}
static inline void mjpeg_encode_dc(MpegEncContext *s, int val,
- uint8_t *huff_size, uint16_t *huff_code)
+ uint8_t *huff_size, uint16_t *huff_code)
{
int mant, nbits;
val = -val;
mant--;
}
-
+
nbits= av_log2_16bit(val) + 1;
-
+
put_bits(&s->pb, huff_size[nbits], huff_code[nbits]);
-
+
put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1));
}
}
MJpegContext *m = s->mjpeg_ctx;
uint8_t *huff_size_ac;
uint16_t *huff_code_ac;
-
+
/* DC coef */
- component = (n <= 3 ? 0 : n - 4 + 1);
+ component = (n <= 3 ? 0 : (n&1) + 1);
dc = block[0]; /* overflow is impossible */
val = dc - s->last_dc[component];
if (n < 4) {
huff_code_ac = m->huff_code_ac_chrominance;
}
s->last_dc[component] = dc;
-
+
/* AC coefs */
-
+
run = 0;
last_index = s->block_last_index[n];
for(i=1;i<=last_index;i++) {
val = -val;
mant--;
}
-
+
nbits= av_log2(val) + 1;
code = (run << 4) | nbits;
put_bits(&s->pb, huff_size_ac[code], huff_code_ac[code]);
-
+
put_bits(&s->pb, nbits, mant & ((1 << nbits) - 1));
run = 0;
}
put_bits(&s->pb, huff_size_ac[0], huff_code_ac[0]);
}
-void mjpeg_encode_mb(MpegEncContext *s,
+void mjpeg_encode_mb(MpegEncContext *s,
DCTELEM block[6][64])
{
int i;
- for(i=0;i<6;i++) {
+ for(i=0;i<5;i++) {
encode_block(s, block[i], i);
}
+ if (s->chroma_format == CHROMA_420) {
+ encode_block(s, block[5], 5);
+ } else {
+ encode_block(s, block[6], 6);
+ encode_block(s, block[5], 5);
+ encode_block(s, block[7], 7);
+ }
}
static int encode_picture_lossless(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
*p = *pict;
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
-
+
mjpeg_picture_header(s);
s->header_bits= put_bits_count(&s->pb);
-
- if(avctx->pix_fmt == PIX_FMT_RGBA32){
+
+ if(avctx->pix_fmt == PIX_FMT_RGB32){
int x, y, i;
const int linesize= p->linesize[0];
uint16_t (*buffer)[4]= (void *) s->rd_scratchpad;
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
-
+
for(i=0; i<3; i++){
top[i]= left[i]= topleft[i]= buffer[0][i];
}
int pred, diff;
PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
-
+
topleft[i]= top[i];
top[i]= buffer[x+1][i];
-
+
left[i]= buffer[x][i];
diff= ((left[i] - pred + 0x100)&0x1FF) - 0x100;
-
+
if(i==0)
mjpeg_encode_dc(s, diff, m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
int mb_x, mb_y, i;
const int mb_width = (width + s->mjpeg_hsample[0] - 1) / s->mjpeg_hsample[0];
const int mb_height = (height + s->mjpeg_vsample[0] - 1) / s->mjpeg_vsample[0];
-
+
for(mb_y = 0; mb_y < mb_height; mb_y++) {
if(s->pb.buf_end - s->pb.buf - (put_bits_count(&s->pb)>>3) < mb_width * 4 * 3 * s->mjpeg_hsample[0] * s->mjpeg_vsample[0]){
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
}
}
-
+
if(i==0)
mjpeg_encode_dc(s, (int8_t)(*ptr - pred), m->huff_size_dc_luminance, m->huff_code_dc_luminance); //FIXME ugly
else
h = s->mjpeg_hsample[i];
v = s->mjpeg_vsample[i];
linesize= p->linesize[i];
-
+
for(y=0; y<v; y++){
for(x=0; x<h; x++){
int pred;
ptr = p->data[i] + (linesize * (v * mb_y + y)) + (h * mb_x + x); //FIXME optimize this crap
-//printf("%d %d %d %d %8X\n", mb_x, mb_y, x, y, ptr);
+//printf("%d %d %d %d %8X\n", mb_x, mb_y, x, y, ptr);
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
if(i==0)
}
emms_c();
-
+
mjpeg_picture_trailer(s);
s->picture_number++;
int interlaced; /* true if interlaced */
int bottom_field; /* true if bottom field */
int lossless;
+ int ls;
+ int progressive;
int rgb;
- int rct; /* standard rct */
- int pegasus_rct; /* pegasus reversible colorspace transform */
+ int rct; /* standard rct */
+ int pegasus_rct; /* pegasus reversible colorspace transform */
int bits; /* bits per component */
+ int maxval;
+ int near; ///< near lossless bound (si 0 for lossless)
+ int t1,t2,t3;
+ int reset; ///< context halfing intervall ?rename
+
int width, height;
int mb_width, mb_height;
int nb_components;
AVFrame picture; /* picture structure */
int linesize[MAX_COMPONENTS]; ///< linesize << interlaced
int8_t *qscale_table;
- DCTELEM block[64] __align8;
+ DECLARE_ALIGNED_8(DCTELEM, block[64]);
ScanTable scantable;
void (*idct_put)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
+ void (*idct_add)(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
int restart_interval;
int restart_count;
int interlace_polarity;
int mjpb_skiptosod;
+
+ int cur_scan; /* current scan, used by JPEG-LS */
} MJpegDecodeContext;
+#include "jpeg_ls.c" //FIXME make jpeg-ls more independent
+
static int mjpeg_decode_dht(MJpegDecodeContext *s);
-static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_table,
- int nb_codes, int use_static)
+static int build_vlc(VLC *vlc, const uint8_t *bits_table, const uint8_t *val_table,
+ int nb_codes, int use_static, int is_ac)
{
- uint8_t huff_size[256];
- uint16_t huff_code[256];
+ uint8_t huff_size[256+16];
+ uint16_t huff_code[256+16];
+
+ assert(nb_codes <= 256);
memset(huff_size, 0, sizeof(huff_size));
build_huffman_codes(huff_size, huff_code, bits_table, val_table);
-
+
+ if(is_ac){
+ memmove(huff_size+16, huff_size, sizeof(uint8_t)*nb_codes);
+ memmove(huff_code+16, huff_code, sizeof(uint16_t)*nb_codes);
+ memset(huff_size, 0, sizeof(uint8_t)*16);
+ memset(huff_code, 0, sizeof(uint16_t)*16);
+ nb_codes += 16;
+ }
+
return init_vlc(vlc, 9, nb_codes, huff_size, 1, 1, huff_code, 2, 2, use_static);
}
{
MJpegDecodeContext *s = avctx->priv_data;
MpegEncContext s2;
+ memset(s, 0, sizeof(MJpegDecodeContext));
s->avctx = avctx;
s->scantable= s2.intra_scantable;
s->idct_put= s2.dsp.idct_put;
+ s->idct_add= s2.dsp.idct_add;
s->mpeg_enc_ctx_allocated = 0;
- s->buffer_size = 102400; /* smaller buffer should be enough,
- but photojpg files could ahive bigger sizes */
- s->buffer = av_malloc(s->buffer_size);
- if (!s->buffer)
- return -1;
+ s->buffer_size = 0;
+ s->buffer = NULL;
s->start_code = -1;
s->first_picture = 1;
s->org_height = avctx->coded_height;
-
- build_vlc(&s->vlcs[0][0], bits_dc_luminance, val_dc_luminance, 12, 0);
- build_vlc(&s->vlcs[0][1], bits_dc_chrominance, val_dc_chrominance, 12, 0);
- build_vlc(&s->vlcs[1][0], bits_ac_luminance, val_ac_luminance, 251, 0);
- build_vlc(&s->vlcs[1][1], bits_ac_chrominance, val_ac_chrominance, 251, 0);
+
+ build_vlc(&s->vlcs[0][0], bits_dc_luminance, val_dc_luminance, 12, 0, 0);
+ build_vlc(&s->vlcs[0][1], bits_dc_chrominance, val_dc_chrominance, 12, 0, 0);
+ build_vlc(&s->vlcs[1][0], bits_ac_luminance, val_ac_luminance, 251, 0, 1);
+ build_vlc(&s->vlcs[1][1], bits_ac_chrominance, val_ac_chrominance, 251, 0, 1);
if (avctx->flags & CODEC_FLAG_EXTERN_HUFF)
{
- av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n");
- init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8);
- mjpeg_decode_dht(s);
- /* should check for error - but dunno */
+ av_log(avctx, AV_LOG_INFO, "mjpeg: using external huffman table\n");
+ init_get_bits(&s->gb, avctx->extradata, avctx->extradata_size*8);
+ mjpeg_decode_dht(s);
+ /* should check for error - but dunno */
+ }
+ if (avctx->extradata_size > 9 &&
+ AV_RL32(avctx->extradata + 4) == MKTAG('f','i','e','l')) {
+ if (avctx->extradata[9] == 6) { /* quicktime icefloe 019 */
+ s->interlace_polarity = 1; /* bottom field first */
+ av_log(avctx, AV_LOG_DEBUG, "mjpeg bottom field first\n");
+ }
}
return 0;
static int find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size){
int vop_found, i;
uint16_t state;
-
+
vop_found= pc->frame_start_found;
state= pc->state;
-
+
i=0;
if(!vop_found){
for(i=0; i<buf_size; i++){
state= (state<<8) | buf[i];
if(state == 0xFFD8){
pc->frame_start_found=0;
- pc->state=0;
+ pc->state=0;
return i-1;
}
}
static int jpeg_parse(AVCodecParserContext *s,
AVCodecContext *avctx,
- uint8_t **poutbuf, int *poutbuf_size,
+ uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size)
{
ParseContext *pc = s->priv_data;
int next;
-
+
next= find_frame_end(pc, buf, buf_size);
if (ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size) < 0) {
static int mjpeg_decode_dqt(MJpegDecodeContext *s)
{
int len, index, i, j;
-
+
len = get_bits(&s->gb, 16) - 2;
while (len >= 65) {
/* only 8 bit precision handled */
if (get_bits(&s->gb, 4) != 0)
- {
- dprintf("dqt: 16bit precision\n");
+ {
+ av_log(s->avctx, AV_LOG_ERROR, "dqt: 16bit precision\n");
return -1;
- }
+ }
index = get_bits(&s->gb, 4);
if (index >= 4)
return -1;
- dprintf("index=%d\n", index);
+ av_log(s->avctx, AV_LOG_DEBUG, "index=%d\n", index);
/* read quant table */
for(i=0;i<64;i++) {
j = s->scantable.permutated[i];
- s->quant_matrixes[index][j] = get_bits(&s->gb, 8);
+ s->quant_matrixes[index][j] = get_bits(&s->gb, 8);
}
//XXX FIXME finetune, and perhaps add dc too
s->qscale[index]= FFMAX(
s->quant_matrixes[index][s->scantable.permutated[1]],
s->quant_matrixes[index][s->scantable.permutated[8]]) >> 1;
- dprintf("qscale[%d]: %d\n", index, s->qscale[index]);
+ av_log(s->avctx, AV_LOG_DEBUG, "qscale[%d]: %d\n", index, s->qscale[index]);
len -= 65;
}
-
+
return 0;
}
int len, index, i, class, n, v, code_max;
uint8_t bits_table[17];
uint8_t val_table[256];
-
+
len = get_bits(&s->gb, 16) - 2;
while (len > 0) {
/* build VLC and flush previous vlc if present */
free_vlc(&s->vlcs[class][index]);
- dprintf("class=%d index=%d nb_codes=%d\n",
+ av_log(s->avctx, AV_LOG_DEBUG, "class=%d index=%d nb_codes=%d\n",
class, index, code_max + 1);
- if(build_vlc(&s->vlcs[class][index], bits_table, val_table, code_max + 1, 0) < 0){
+ if(build_vlc(&s->vlcs[class][index], bits_table, val_table, code_max + 1, 0, class > 0) < 0){
return -1;
}
}
static int mjpeg_decode_sof(MJpegDecodeContext *s)
{
- int len, nb_components, i, width, height;
+ int len, nb_components, i, width, height, pix_fmt_id;
/* XXX: verify len field validity */
len = get_bits(&s->gb, 16);
s->bits= get_bits(&s->gb, 8);
-
- if(s->pegasus_rct) s->bits=9;
+
+ if(s->pegasus_rct) s->bits=9;
if(s->bits==9 && !s->pegasus_rct) s->rct=1; //FIXME ugly
if (s->bits != 8 && !s->lossless){
av_log(s->avctx, AV_LOG_ERROR, "only 8 bits/component accepted\n");
return -1;
}
+
height = get_bits(&s->gb, 16);
width = get_bits(&s->gb, 16);
-
- dprintf("sof0: picture: %dx%d\n", width, height);
+
+ av_log(s->avctx, AV_LOG_DEBUG, "sof0: picture: %dx%d\n", width, height);
if(avcodec_check_dimensions(s->avctx, width, height))
return -1;
if (nb_components <= 0 ||
nb_components > MAX_COMPONENTS)
return -1;
+ if (s->ls && !(s->bits <= 8 || nb_components == 1)){
+ av_log(s->avctx, AV_LOG_ERROR, "only <= 8 bits/component or 16-bit gray accepted for JPEG-LS\n");
+ return -1;
+ }
s->nb_components = nb_components;
s->h_max = 1;
s->v_max = 1;
s->quant_index[i] = get_bits(&s->gb, 8);
if (s->quant_index[i] >= 4)
return -1;
- dprintf("component %d %d:%d id: %d quant:%d\n", i, s->h_count[i],
- s->v_count[i], s->component_id[i], s->quant_index[i]);
+ av_log(s->avctx, AV_LOG_DEBUG, "component %d %d:%d id: %d quant:%d\n", i, s->h_count[i],
+ s->v_count[i], s->component_id[i], s->quant_index[i]);
}
-
+
+ if(s->ls && (s->h_max > 1 || s->v_max > 1)) {
+ av_log(s->avctx, AV_LOG_ERROR, "Subsampling in JPEG-LS is not supported.\n");
+ return -1;
+ }
+
if(s->v_max==1 && s->h_max==1 && s->lossless==1) s->rgb=1;
/* if different size, realloc/alloc picture */
/* XXX: also check h_count and v_count */
if (width != s->width || height != s->height) {
av_freep(&s->qscale_table);
-
+
s->width = width;
s->height = height;
- avcodec_set_dimensions(s->avctx, width, height);
/* test interlaced mode */
if (s->first_picture &&
s->org_height != 0 &&
s->height < ((s->org_height * 3) / 4)) {
s->interlaced = 1;
-// s->bottom_field = (s->interlace_polarity) ? 1 : 0;
- s->bottom_field = 0;
- s->avctx->height *= 2;
+ s->bottom_field = s->interlace_polarity;
+ s->picture.interlaced_frame = 1;
+ s->picture.top_field_first = !s->interlace_polarity;
+ height *= 2;
}
+ avcodec_set_dimensions(s->avctx, width, height);
+
s->qscale_table= av_mallocz((s->width+15)/16);
s->first_picture = 0;
}
-
- if(s->interlaced && s->bottom_field)
+
+ if(s->interlaced && (s->bottom_field == !s->interlace_polarity))
return 0;
-
+
/* XXX: not complete test ! */
- switch((s->h_count[0] << 4) | s->v_count[0]) {
- case 0x11:
+ pix_fmt_id = (s->h_count[0] << 20) | (s->v_count[0] << 16) |
+ (s->h_count[1] << 12) | (s->v_count[1] << 8) |
+ (s->h_count[2] << 4) | s->v_count[2];
+ av_log(s->avctx, AV_LOG_DEBUG, "pix fmt id %x\n", pix_fmt_id);
+ switch(pix_fmt_id){
+ case 0x222222:
+ case 0x111111:
if(s->rgb){
- s->avctx->pix_fmt = PIX_FMT_RGBA32;
+ s->avctx->pix_fmt = PIX_FMT_RGB32;
}else if(s->nb_components==3)
s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV444P : PIX_FMT_YUVJ444P;
else
s->avctx->pix_fmt = PIX_FMT_GRAY8;
break;
- case 0x21:
+ case 0x211111:
+ case 0x221212:
s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV422P : PIX_FMT_YUVJ422P;
break;
default:
- case 0x22:
+ case 0x221111:
s->avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV420P : PIX_FMT_YUVJ420P;
break;
}
+ if(s->ls){
+ if(s->nb_components > 1)
+ s->avctx->pix_fmt = PIX_FMT_RGB24;
+ else if(s->bits <= 8)
+ s->avctx->pix_fmt = PIX_FMT_GRAY8;
+ else
+ s->avctx->pix_fmt = PIX_FMT_GRAY16;
+ }
if(s->picture.data[0])
s->avctx->release_buffer(s->avctx, &s->picture);
}
s->picture.pict_type= I_TYPE;
s->picture.key_frame= 1;
-
+
for(i=0; i<3; i++){
s->linesize[i]= s->picture.linesize[i] << s->interlaced;
}
// printf("%d %d %d %d %d %d\n", s->width, s->height, s->linesize[0], s->linesize[1], s->interlaced, s->avctx->height);
-
+
if (len != (8+(3*nb_components)))
{
- dprintf("decode_sof0: error, len(%d) mismatch\n", len);
+ av_log(s->avctx, AV_LOG_DEBUG, "decode_sof0: error, len(%d) mismatch\n", len);
+ }
+
+ /* totally blank picture as progressive JPEG will only add details to it */
+ if(s->progressive){
+ memset(s->picture.data[0], 0, s->picture.linesize[0] * s->height);
+ memset(s->picture.data[1], 0, s->picture.linesize[1] * s->height >> (s->v_max - s->v_count[1]));
+ memset(s->picture.data[2], 0, s->picture.linesize[2] * s->height >> (s->v_max - s->v_count[2]));
}
-
return 0;
}
code = get_vlc2(&s->gb, s->vlcs[0][dc_index].table, 9, 2);
if (code < 0)
{
- dprintf("mjpeg_decode_dc: bad vlc: %d:%d (%p)\n", 0, dc_index,
- &s->vlcs[0][dc_index]);
+ av_log(s->avctx, AV_LOG_WARNING, "mjpeg_decode_dc: bad vlc: %d:%d (%p)\n", 0, dc_index,
+ &s->vlcs[0][dc_index]);
return 0xffff;
}
}
/* decode block and dequantize */
-static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
- int component, int dc_index, int ac_index, int quant_index)
+static int decode_block(MJpegDecodeContext *s, DCTELEM *block,
+ int component, int dc_index, int ac_index, int16_t *quant_matrix)
{
int code, i, j, level, val;
- VLC *ac_vlc;
- int16_t *quant_matrix;
/* DC coef */
val = mjpeg_decode_dc(s, dc_index);
if (val == 0xffff) {
- dprintf("error dc\n");
+ av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
return -1;
}
- quant_matrix = s->quant_matrixes[quant_index];
val = val * quant_matrix[0] + s->last_dc[component];
s->last_dc[component] = val;
block[0] = val;
/* AC coefs */
- ac_vlc = &s->vlcs[1][ac_index];
- i = 1;
+ i = 0;
+ {OPEN_READER(re, &s->gb)
for(;;) {
- code = get_vlc2(&s->gb, s->vlcs[1][ac_index].table, 9, 2);
+ UPDATE_CACHE(re, &s->gb);
+ GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2)
- if (code < 0) {
- dprintf("error ac\n");
- return -1;
- }
/* EOB */
- if (code == 0)
+ if (code == 0x10)
break;
- if (code == 0xf0) {
- i += 16;
- } else {
- level = get_xbits(&s->gb, code & 0xf);
- i += code >> 4;
- if (i >= 64) {
- dprintf("error count: %d\n", i);
+ i += ((unsigned)code) >> 4;
+ if(code != 0x100){
+ code &= 0xf;
+ if(code > MIN_CACHE_BITS - 16){
+ UPDATE_CACHE(re, &s->gb)
+ }
+ {
+ int cache=GET_CACHE(re,&s->gb);
+ int sign=(~cache)>>31;
+ level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
+ }
+
+ LAST_SKIP_BITS(re, &s->gb, code)
+
+ if (i >= 63) {
+ if(i == 63){
+ j = s->scantable.permutated[63];
+ block[j] = level * quant_matrix[j];
+ break;
+ }
+ av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
return -1;
}
j = s->scantable.permutated[i];
block[j] = level * quant_matrix[j];
- i++;
- if (i >= 64)
+ }
+ }
+ CLOSE_READER(re, &s->gb)}
+
+ return 0;
+}
+
+/* decode block and dequantize - progressive JPEG version */
+static int decode_block_progressive(MJpegDecodeContext *s, DCTELEM *block,
+ int component, int dc_index, int ac_index, int16_t *quant_matrix,
+ int ss, int se, int Ah, int Al, int *EOBRUN)
+{
+ int code, i, j, level, val, run;
+
+ /* DC coef */
+ if(!ss){
+ val = mjpeg_decode_dc(s, dc_index);
+ if (val == 0xffff) {
+ av_log(s->avctx, AV_LOG_ERROR, "error dc\n");
+ return -1;
+ }
+ val = (val * quant_matrix[0] << Al) + s->last_dc[component];
+ }else
+ val = 0;
+ s->last_dc[component] = val;
+ block[0] = val;
+ if(!se) return 0;
+ /* AC coefs */
+ if(*EOBRUN){
+ (*EOBRUN)--;
+ return 0;
+ }
+ {OPEN_READER(re, &s->gb)
+ for(i=ss;;i++) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_VLC(code, re, &s->gb, s->vlcs[1][ac_index].table, 9, 2)
+ /* Progressive JPEG use AC coeffs from zero and this decoder sets offset 16 by default */
+ code -= 16;
+ if(code & 0xF) {
+ i += ((unsigned) code) >> 4;
+ code &= 0xf;
+ if(code > MIN_CACHE_BITS - 16){
+ UPDATE_CACHE(re, &s->gb)
+ }
+ {
+ int cache=GET_CACHE(re,&s->gb);
+ int sign=(~cache)>>31;
+ level = (NEG_USR32(sign ^ cache,code) ^ sign) - sign;
+ }
+
+ LAST_SKIP_BITS(re, &s->gb, code)
+
+ if (i >= se) {
+ if(i == se){
+ j = s->scantable.permutated[se];
+ block[j] = level * quant_matrix[j] << Al;
+ break;
+ }
+ av_log(s->avctx, AV_LOG_ERROR, "error count: %d\n", i);
+ return -1;
+ }
+ j = s->scantable.permutated[i];
+ block[j] = level * quant_matrix[j] << Al;
+ }else{
+ run = ((unsigned) code) >> 4;
+ if(run == 0xF){// ZRL - skip 15 coefficients
+ i += 15;
+ }else{
+ val = run;
+ run = (1 << run);
+ UPDATE_CACHE(re, &s->gb);
+ run += (GET_CACHE(re, &s->gb) >> (32 - val)) & (run - 1);
+ if(val)
+ LAST_SKIP_BITS(re, &s->gb, val);
+ *EOBRUN = run - 1;
break;
+ }
}
}
+ CLOSE_READER(re, &s->gb)}
+
return 0;
}
int left[3], top[3], topleft[3];
const int linesize= s->linesize[0];
const int mask= (1<<s->bits)-1;
-
+
if((unsigned)s->mb_width > 32768) //dynamic alloc
return -1;
-
+
for(i=0; i<3; i++){
buffer[0][i]= 1 << (s->bits + point_transform - 1);
}
top[i]= buffer[mb_x][i];
PREDICT(pred, topleft[i], top[i], left[i], modified_predictor);
-
- left[i]=
+
+ left[i]=
buffer[mb_x][i]= mask & (pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform));
}
x = 0;
y = 0;
linesize= s->linesize[c];
-
+
for(j=0; j<n; j++) {
int pred;
PREDICT(pred, ptr[-linesize-1], ptr[-linesize], ptr[-1], predictor);
}
}
-
+
if (s->interlaced && s->bottom_field)
ptr += linesize >> 1;
*ptr= pred + (mjpeg_decode_dc(s, s->dc_index[i]) << point_transform);
x = 0;
y = 0;
linesize= s->linesize[c];
-
+
for(j=0; j<n; j++) {
int pred;
return 0;
}
-static int mjpeg_decode_scan(MJpegDecodeContext *s){
+static int mjpeg_decode_scan(MJpegDecodeContext *s, int nb_components, int ss, int se, int Ah, int Al){
int i, mb_x, mb_y;
- const int nb_components=3;
+ int EOBRUN = 0;
+ if(Ah) return 0; /* TODO decode refinement planes too */
for(mb_y = 0; mb_y < s->mb_height; mb_y++) {
for(mb_x = 0; mb_x < s->mb_width; mb_x++) {
if (s->restart_interval && !s->restart_count)
y = 0;
for(j=0;j<n;j++) {
memset(s->block, 0, sizeof(s->block));
- if (decode_block(s, s->block, i,
- s->dc_index[i], s->ac_index[i],
- s->quant_index[c]) < 0) {
- dprintf("error y=%d x=%d\n", mb_y, mb_x);
+ if (!s->progressive && decode_block(s, s->block, i,
+ s->dc_index[i], s->ac_index[i],
+ s->quant_matrixes[ s->quant_index[c] ]) < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
return -1;
}
-// dprintf("mb: %d %d processed\n", mb_y, mb_x);
- ptr = s->picture.data[c] +
- (((s->linesize[c] * (v * mb_y + y) * 8) +
+ if (s->progressive && decode_block_progressive(s, s->block, i,
+ s->dc_index[i], s->ac_index[i],
+ s->quant_matrixes[ s->quant_index[c] ], ss, se, Ah, Al, &EOBRUN) < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "error y=%d x=%d\n", mb_y, mb_x);
+ return -1;
+ }
+// av_log(s->avctx, AV_LOG_DEBUG, "mb: %d %d processed\n", mb_y, mb_x);
+ ptr = s->picture.data[c] +
+ (((s->linesize[c] * (v * mb_y + y) * 8) +
(h * mb_x + x) * 8) >> s->avctx->lowres);
if (s->interlaced && s->bottom_field)
ptr += s->linesize[c] >> 1;
//av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d %d %d %d %d \n", mb_x, mb_y, x, y, c, s->bottom_field, (v * mb_y + y) * 8, (h * mb_x + x) * 8);
- s->idct_put(ptr, s->linesize[c], s->block);
+ if(!s->progressive)
+ s->idct_put(ptr, s->linesize[c], s->block);
+ else
+ s->idct_add(ptr, s->linesize[c], s->block);
if (++x == h) {
x = 0;
y++;
int len, nb_components, i, h, v, predictor, point_transform;
int vmax, hmax, index, id;
const int block_size= s->lossless ? 1 : 8;
+ int ilv, prev_shift;
/* XXX: verify len field validity */
len = get_bits(&s->gb, 16);
nb_components = get_bits(&s->gb, 8);
if (len != 6+2*nb_components)
{
- dprintf("decode_sos: invalid len (%d)\n", len);
- return -1;
- }
- /* XXX: only interleaved scan accepted */
- if (nb_components != s->nb_components)
- {
- dprintf("decode_sos: components(%d) mismatch\n", nb_components);
+ av_log(s->avctx, AV_LOG_ERROR, "decode_sos: invalid len (%d)\n", len);
return -1;
}
vmax = 0;
hmax = 0;
for(i=0;i<nb_components;i++) {
id = get_bits(&s->gb, 8) - 1;
- dprintf("component: %d\n", id);
+ av_log(s->avctx, AV_LOG_DEBUG, "component: %d\n", id);
/* find component index */
for(index=0;index<s->nb_components;index++)
if (id == s->component_id[index])
break;
if (index == s->nb_components)
- {
- dprintf("decode_sos: index(%d) out of components\n", index);
+ {
+ av_log(s->avctx, AV_LOG_ERROR, "decode_sos: index(%d) out of components\n", index);
return -1;
- }
+ }
s->comp_index[i] = index;
s->dc_index[i] = get_bits(&s->gb, 4);
s->ac_index[i] = get_bits(&s->gb, 4);
- if (s->dc_index[i] < 0 || s->ac_index[i] < 0 ||
- s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
- goto out_of_range;
+ if (s->dc_index[i] < 0 || s->ac_index[i] < 0 ||
+ s->dc_index[i] >= 4 || s->ac_index[i] >= 4)
+ goto out_of_range;
#if 0 //buggy
- switch(s->start_code)
- {
- case SOF0:
- if (dc_index[i] > 1 || ac_index[i] > 1)
- goto out_of_range;
- break;
- case SOF1:
- case SOF2:
- if (dc_index[i] > 3 || ac_index[i] > 3)
- goto out_of_range;
- break;
- case SOF3:
- if (dc_index[i] > 3 || ac_index[i] != 0)
- goto out_of_range;
- break;
- }
+ switch(s->start_code)
+ {
+ case SOF0:
+ if (dc_index[i] > 1 || ac_index[i] > 1)
+ goto out_of_range;
+ break;
+ case SOF1:
+ case SOF2:
+ if (dc_index[i] > 3 || ac_index[i] > 3)
+ goto out_of_range;
+ break;
+ case SOF3:
+ if (dc_index[i] > 3 || ac_index[i] != 0)
+ goto out_of_range;
+ break;
+ }
#endif
}
- predictor= get_bits(&s->gb, 8); /* lossless predictor or start of spectral (Ss) */
- skip_bits(&s->gb, 8); /* Se */
- skip_bits(&s->gb, 4); /* Ah */
+ predictor= get_bits(&s->gb, 8); /* JPEG Ss / lossless JPEG predictor /JPEG-LS NEAR */
+ ilv= get_bits(&s->gb, 8); /* JPEG Se / JPEG-LS ILV */
+ prev_shift = get_bits(&s->gb, 4); /* Ah */
point_transform= get_bits(&s->gb, 4); /* Al */
- for(i=0;i<nb_components;i++)
+ for(i=0;i<nb_components;i++)
s->last_dc[i] = 1024;
if (nb_components > 1) {
/* interleaved stream */
s->mb_width = (s->width + s->h_max * block_size - 1) / (s->h_max * block_size);
s->mb_height = (s->height + s->v_max * block_size - 1) / (s->v_max * block_size);
- } else {
- h = s->h_max / s->h_scount[s->comp_index[0]];
- v = s->v_max / s->v_scount[s->comp_index[0]];
+ } else if(!s->ls) { /* skip this for JPEG-LS */
+ h = s->h_max / s->h_scount[0];
+ v = s->v_max / s->v_scount[0];
s->mb_width = (s->width + h * block_size - 1) / (h * block_size);
s->mb_height = (s->height + v * block_size - 1) / (v * block_size);
s->nb_blocks[0] = 1;
}
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d\n", s->lossless ? "lossless" : "sequencial DCT", s->rgb ? "RGB" : "", predictor, point_transform);
-
+ av_log(s->avctx, AV_LOG_DEBUG, "%s %s p:%d >>:%d ilv:%d bits:%d %s\n", s->lossless ? "lossless" : "sequencial DCT", s->rgb ? "RGB" : "",
+ predictor, point_transform, ilv, s->bits,
+ s->pegasus_rct ? "PRCT" : (s->rct ? "RCT" : ""));
+
+
/* mjpeg-b can have padding bytes between sos and image data, skip them */
for (i = s->mjpb_skiptosod; i > 0; i--)
skip_bits(&s->gb, 8);
if(s->lossless){
+ if(s->ls){
+// for(){
+// reset_ls_coding_parameters(s, 0);
+
+ ls_decode_picture(s, predictor, point_transform, ilv);
+ }else{
if(s->rgb){
if(ljpeg_decode_rgb_scan(s, predictor, point_transform) < 0)
return -1;
if(ljpeg_decode_yuv_scan(s, predictor, point_transform) < 0)
return -1;
}
+ }
}else{
- if(mjpeg_decode_scan(s) < 0)
+ if(mjpeg_decode_scan(s, nb_components, predictor, ilv, prev_shift, point_transform) < 0)
return -1;
}
emms_c();
return 0;
out_of_range:
- dprintf("decode_sos: ac/dc index out of range\n");
+ av_log(s->avctx, AV_LOG_ERROR, "decode_sos: ac/dc index out of range\n");
return -1;
}
static int mjpeg_decode_dri(MJpegDecodeContext *s)
{
if (get_bits(&s->gb, 16) != 4)
- return -1;
+ return -1;
s->restart_interval = get_bits(&s->gb, 16);
- dprintf("restart interval: %d\n", s->restart_interval);
+ s->restart_count = 0;
+ av_log(s->avctx, AV_LOG_DEBUG, "restart interval: %d\n", s->restart_interval);
return 0;
}
len = get_bits(&s->gb, 16);
if (len < 5)
- return -1;
+ return -1;
if(8*len + get_bits_count(&s->gb) > s->gb.size_in_bits)
return -1;
len -= 6;
if(s->avctx->debug & FF_DEBUG_STARTCODE){
- av_log(s->avctx, AV_LOG_DEBUG, "APPx %8X\n", id);
+ av_log(s->avctx, AV_LOG_DEBUG, "APPx %8X\n", id);
}
-
+
/* buggy AVID, it puts EOI only at every 10th frame */
/* also this fourcc is used by non-avid files too, it holds some
informations, but it's always present in AVID creates files */
if (id == ff_get_fourcc("AVI1"))
{
- /* structure:
- 4bytes AVI1
- 1bytes polarity
- 1bytes always zero
- 4bytes field_size
- 4bytes field_size_less_padding
- */
- s->buggy_avid = 1;
-// if (s->first_picture)
-// printf("mjpeg: workarounding buggy AVID\n");
- s->interlace_polarity = get_bits(&s->gb, 8);
+ /* structure:
+ 4bytes AVI1
+ 1bytes polarity
+ 1bytes always zero
+ 4bytes field_size
+ 4bytes field_size_less_padding
+ */
+ s->buggy_avid = 1;
+// if (s->first_picture)
+// printf("mjpeg: workarounding buggy AVID\n");
+ s->interlace_polarity = get_bits(&s->gb, 8);
#if 0
- skip_bits(&s->gb, 8);
- skip_bits(&s->gb, 32);
- skip_bits(&s->gb, 32);
- len -= 10;
+ skip_bits(&s->gb, 8);
+ skip_bits(&s->gb, 32);
+ skip_bits(&s->gb, 32);
+ len -= 10;
#endif
-// if (s->interlace_polarity)
-// printf("mjpeg: interlace polarity: %d\n", s->interlace_polarity);
- goto out;
+// if (s->interlace_polarity)
+// printf("mjpeg: interlace polarity: %d\n", s->interlace_polarity);
+ goto out;
}
-
+
// len -= 2;
-
+
if (id == ff_get_fourcc("JFIF"))
{
- int t_w, t_h, v1, v2;
- skip_bits(&s->gb, 8); /* the trailing zero-byte */
- v1= get_bits(&s->gb, 8);
+ int t_w, t_h, v1, v2;
+ skip_bits(&s->gb, 8); /* the trailing zero-byte */
+ v1= get_bits(&s->gb, 8);
v2= get_bits(&s->gb, 8);
skip_bits(&s->gb, 8);
s->avctx->sample_aspect_ratio.den
);
- t_w = get_bits(&s->gb, 8);
- t_h = get_bits(&s->gb, 8);
- if (t_w && t_h)
- {
- /* skip thumbnail */
- if (len-10-(t_w*t_h*3) > 0)
- len -= t_w*t_h*3;
- }
- len -= 10;
- goto out;
- }
-
+ t_w = get_bits(&s->gb, 8);
+ t_h = get_bits(&s->gb, 8);
+ if (t_w && t_h)
+ {
+ /* skip thumbnail */
+ if (len-10-(t_w*t_h*3) > 0)
+ len -= t_w*t_h*3;
+ }
+ len -= 10;
+ goto out;
+ }
+
if (id == ff_get_fourcc("Adob") && (get_bits(&s->gb, 8) == 'e'))
{
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_INFO, "mjpeg: Adobe header found\n");
- skip_bits(&s->gb, 16); /* version */
- skip_bits(&s->gb, 16); /* flags0 */
- skip_bits(&s->gb, 16); /* flags1 */
- skip_bits(&s->gb, 8); /* transform */
- len -= 7;
- goto out;
+ skip_bits(&s->gb, 16); /* version */
+ skip_bits(&s->gb, 16); /* flags0 */
+ skip_bits(&s->gb, 16); /* flags1 */
+ skip_bits(&s->gb, 8); /* transform */
+ len -= 7;
+ goto out;
}
if (id == ff_get_fourcc("LJIF")){
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_INFO, "Pegasus lossless jpeg header found\n");
- skip_bits(&s->gb, 16); /* version ? */
- skip_bits(&s->gb, 16); /* unknwon always 0? */
- skip_bits(&s->gb, 16); /* unknwon always 0? */
- skip_bits(&s->gb, 16); /* unknwon always 0? */
+ skip_bits(&s->gb, 16); /* version ? */
+ skip_bits(&s->gb, 16); /* unknwon always 0? */
+ skip_bits(&s->gb, 16); /* unknwon always 0? */
+ skip_bits(&s->gb, 16); /* unknwon always 0? */
switch( get_bits(&s->gb, 8)){
case 1:
s->rgb= 1;
len -= 9;
goto out;
}
-
+
/* Apple MJPEG-A */
if ((s->start_code == APP1) && (len > (0x28 - 8)))
{
- id = (get_bits(&s->gb, 16) << 16) | get_bits(&s->gb, 16);
- id = be2me_32(id);
- len -= 4;
- if (id == ff_get_fourcc("mjpg")) /* Apple MJPEG-A */
- {
+ id = (get_bits(&s->gb, 16) << 16) | get_bits(&s->gb, 16);
+ id = be2me_32(id);
+ len -= 4;
+ if (id == ff_get_fourcc("mjpg")) /* Apple MJPEG-A */
+ {
#if 0
- skip_bits(&s->gb, 32); /* field size */
- skip_bits(&s->gb, 32); /* pad field size */
- skip_bits(&s->gb, 32); /* next off */
- skip_bits(&s->gb, 32); /* quant off */
- skip_bits(&s->gb, 32); /* huff off */
- skip_bits(&s->gb, 32); /* image off */
- skip_bits(&s->gb, 32); /* scan off */
- skip_bits(&s->gb, 32); /* data off */
+ skip_bits(&s->gb, 32); /* field size */
+ skip_bits(&s->gb, 32); /* pad field size */
+ skip_bits(&s->gb, 32); /* next off */
+ skip_bits(&s->gb, 32); /* quant off */
+ skip_bits(&s->gb, 32); /* huff off */
+ skip_bits(&s->gb, 32); /* image off */
+ skip_bits(&s->gb, 32); /* scan off */
+ skip_bits(&s->gb, 32); /* data off */
#endif
if (s->avctx->debug & FF_DEBUG_PICT_INFO)
- av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n");
- }
+ av_log(s->avctx, AV_LOG_INFO, "mjpeg: Apple MJPEG-A header found\n");
+ }
}
out:
/* slow but needed for extreme adobe jpegs */
if (len < 0)
- av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error, decode_app parser read over the end\n");
+ av_log(s->avctx, AV_LOG_ERROR, "mjpeg: error, decode_app parser read over the end\n");
while(--len > 0)
- skip_bits(&s->gb, 8);
+ skip_bits(&s->gb, 8);
return 0;
}
{
int len = get_bits(&s->gb, 16);
if (len >= 2 && 8*len - 16 + get_bits_count(&s->gb) <= s->gb.size_in_bits) {
- uint8_t *cbuf = av_malloc(len - 1);
- if (cbuf) {
- int i;
- for (i = 0; i < len - 2; i++)
- cbuf[i] = get_bits(&s->gb, 8);
- if (i > 0 && cbuf[i-1] == '\n')
- cbuf[i-1] = 0;
- else
- cbuf[i] = 0;
+ char *cbuf = av_malloc(len - 1);
+ if (cbuf) {
+ int i;
+ for (i = 0; i < len - 2; i++)
+ cbuf[i] = get_bits(&s->gb, 8);
+ if (i > 0 && cbuf[i-1] == '\n')
+ cbuf[i-1] = 0;
+ else
+ cbuf[i] = 0;
if(s->avctx->debug & FF_DEBUG_PICT_INFO)
av_log(s->avctx, AV_LOG_INFO, "mjpeg comment: '%s'\n", cbuf);
- /* buggy avid, it puts EOI only at every 10th frame */
- if (!strcmp(cbuf, "AVID"))
- {
- s->buggy_avid = 1;
- // if (s->first_picture)
- // printf("mjpeg: workarounding buggy AVID\n");
- }
+ /* buggy avid, it puts EOI only at every 10th frame */
+ if (!strcmp(cbuf, "AVID"))
+ {
+ s->buggy_avid = 1;
+ // if (s->first_picture)
+ // printf("mjpeg: workarounding buggy AVID\n");
+ }
else if(!strcmp(cbuf, "CS=ITU601")){
s->cs_itu601= 1;
}
- av_free(cbuf);
- }
+ av_free(cbuf);
+ }
}
return 0;
buf_ptr = *pbuf_ptr;
while (buf_ptr < buf_end) {
v = *buf_ptr++;
- v2 = *buf_ptr;
+ v2 = *buf_ptr;
if ((v == 0xff) && (v2 >= 0xc0) && (v2 <= 0xfe) && buf_ptr < buf_end) {
- val = *buf_ptr++;
- goto found;
+ val = *buf_ptr++;
+ goto found;
}
#ifdef DEBUG
- skipped++;
+ skipped++;
#endif
}
val = -1;
found:
#ifdef DEBUG
- dprintf("find_marker skipped %d bytes\n", skipped);
+ av_log(NULL, AV_LOG_VERBOSE, "find_marker skipped %d bytes\n", skipped);
#endif
*pbuf_ptr = buf_ptr;
return val;
}
-static int mjpeg_decode_frame(AVCodecContext *avctx,
+static int mjpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
while (buf_ptr < buf_end) {
/* find start next marker */
start_code = find_marker(&buf_ptr, buf_end);
- {
- /* EOF */
+ {
+ /* EOF */
if (start_code < 0) {
- goto the_end;
+ goto the_end;
} else {
- dprintf("marker=%x avail_size_in_buf=%d\n", start_code, buf_end - buf_ptr);
-
- if ((buf_end - buf_ptr) > s->buffer_size)
- {
- av_free(s->buffer);
- s->buffer_size = buf_end-buf_ptr;
- s->buffer = av_malloc(s->buffer_size);
- dprintf("buffer too small, expanding to %d bytes\n",
- s->buffer_size);
- }
-
- /* unescape buffer of SOS */
- if (start_code == SOS)
- {
- uint8_t *src = buf_ptr;
- uint8_t *dst = s->buffer;
-
- while (src<buf_end)
- {
- uint8_t x = *(src++);
-
- *(dst++) = x;
- if (x == 0xff)
- {
+ av_log(avctx, AV_LOG_DEBUG, "marker=%x avail_size_in_buf=%d\n", start_code, buf_end - buf_ptr);
+
+ if ((buf_end - buf_ptr) > s->buffer_size)
+ {
+ av_free(s->buffer);
+ s->buffer_size = buf_end-buf_ptr;
+ s->buffer = av_malloc(s->buffer_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ av_log(avctx, AV_LOG_DEBUG, "buffer too small, expanding to %d bytes\n",
+ s->buffer_size);
+ }
+
+ /* unescape buffer of SOS, use special treatment for JPEG-LS */
+ if (start_code == SOS && !s->ls)
+ {
+ uint8_t *src = buf_ptr;
+ uint8_t *dst = s->buffer;
+
+ while (src<buf_end)
+ {
+ uint8_t x = *(src++);
+
+ *(dst++) = x;
+ if (x == 0xff)
+ {
while(src<buf_end && x == 0xff)
x = *(src++);
- if (x >= 0xd0 && x <= 0xd7)
- *(dst++) = x;
- else if (x)
- break;
- }
- }
- init_get_bits(&s->gb, s->buffer, (dst - s->buffer)*8);
-
- dprintf("escaping removed %d bytes\n",
- (buf_end - buf_ptr) - (dst - s->buffer));
- }
- else
- init_get_bits(&s->gb, buf_ptr, (buf_end - buf_ptr)*8);
-
- s->start_code = start_code;
+ if (x >= 0xd0 && x <= 0xd7)
+ *(dst++) = x;
+ else if (x)
+ break;
+ }
+ }
+ init_get_bits(&s->gb, s->buffer, (dst - s->buffer)*8);
+
+ av_log(avctx, AV_LOG_DEBUG, "escaping removed %d bytes\n",
+ (buf_end - buf_ptr) - (dst - s->buffer));
+ }
+ else if(start_code == SOS && s->ls){
+ uint8_t *src = buf_ptr;
+ uint8_t *dst = s->buffer;
+ int bit_count = 0;
+ int t = 0, b = 0;
+ PutBitContext pb;
+
+ s->cur_scan++;
+
+ /* find marker */
+ while (src + t < buf_end){
+ uint8_t x = src[t++];
+ if (x == 0xff){
+ while((src + t < buf_end) && x == 0xff)
+ x = src[t++];
+ if (x & 0x80) {
+ t -= 2;
+ break;
+ }
+ }
+ }
+ bit_count = t * 8;
+
+ init_put_bits(&pb, dst, t);
+
+ /* unescape bitstream */
+ while(b < t){
+ uint8_t x = src[b++];
+ put_bits(&pb, 8, x);
+ if(x == 0xFF){
+ x = src[b++];
+ put_bits(&pb, 7, x);
+ bit_count--;
+ }
+ }
+ flush_put_bits(&pb);
+
+ init_get_bits(&s->gb, dst, bit_count);
+ }
+ else
+ init_get_bits(&s->gb, buf_ptr, (buf_end - buf_ptr)*8);
+
+ s->start_code = start_code;
if(s->avctx->debug & FF_DEBUG_STARTCODE){
- av_log(s->avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
+ av_log(avctx, AV_LOG_DEBUG, "startcode: %X\n", start_code);
}
- /* process markers */
- if (start_code >= 0xd0 && start_code <= 0xd7) {
- dprintf("restart marker: %d\n", start_code&0x0f);
- /* APP fields */
- } else if (start_code >= APP0 && start_code <= APP15) {
- mjpeg_decode_app(s);
- /* Comment */
- } else if (start_code == COM){
- mjpeg_decode_com(s);
- }
+ /* process markers */
+ if (start_code >= 0xd0 && start_code <= 0xd7) {
+ av_log(avctx, AV_LOG_DEBUG, "restart marker: %d\n", start_code&0x0f);
+ /* APP fields */
+ } else if (start_code >= APP0 && start_code <= APP15) {
+ mjpeg_decode_app(s);
+ /* Comment */
+ } else if (start_code == COM){
+ mjpeg_decode_com(s);
+ }
switch(start_code) {
case SOI:
- s->restart_interval = 0;
+ s->restart_interval = 0;
+
+ s->restart_count = 0;
/* nothing to do on SOI */
break;
case DQT:
break;
case DHT:
if(mjpeg_decode_dht(s) < 0){
- av_log(s->avctx, AV_LOG_ERROR, "huffman table decode error\n");
+ av_log(avctx, AV_LOG_ERROR, "huffman table decode error\n");
return -1;
}
break;
case SOF0:
s->lossless=0;
- if (mjpeg_decode_sof(s) < 0)
- return -1;
+ s->ls=0;
+ s->progressive=0;
+ if (mjpeg_decode_sof(s) < 0)
+ return -1;
+ break;
+ case SOF2:
+ s->lossless=0;
+ s->ls=0;
+ s->progressive=1;
+ if (mjpeg_decode_sof(s) < 0)
+ return -1;
break;
case SOF3:
s->lossless=1;
- if (mjpeg_decode_sof(s) < 0)
- return -1;
+ s->ls=0;
+ s->progressive=0;
+ if (mjpeg_decode_sof(s) < 0)
+ return -1;
+ break;
+ case SOF48:
+ s->lossless=1;
+ s->ls=1;
+ s->progressive=0;
+ if (mjpeg_decode_sof(s) < 0)
+ return -1;
break;
- case EOI:
- if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
+ case LSE:
+ if (decode_lse(s) < 0)
+ return -1;
+ break;
+ case EOI:
+ s->cur_scan = 0;
+ if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
break;
eoi_parser:
- {
+ {
if (s->interlaced) {
s->bottom_field ^= 1;
/* if not bottom field, do not output image yet */
- if (s->bottom_field)
+ if (s->bottom_field == !s->interlace_polarity)
goto not_the_end;
}
*picture = s->picture;
*data_size = sizeof(AVFrame);
if(!s->lossless){
- picture->quality= FFMAX(FFMAX(s->qscale[0], s->qscale[1]), s->qscale[2]);
+ picture->quality= FFMAX(FFMAX(s->qscale[0], s->qscale[1]), s->qscale[2]);
picture->qstride= 0;
picture->qscale_table= s->qscale_table;
memset(picture->qscale_table, picture->quality, (s->width+15)/16);
if(avctx->debug & FF_DEBUG_QP)
- av_log(s->avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality);
+ av_log(avctx, AV_LOG_DEBUG, "QP: %d\n", picture->quality);
picture->quality*= FF_QP2LAMBDA;
}
-
+
goto the_end;
}
- break;
+ break;
case SOS:
mjpeg_decode_sos(s);
- /* buggy avid puts EOI every 10-20th frame */
- /* if restart period is over process EOI */
- if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
- goto eoi_parser;
+ /* buggy avid puts EOI every 10-20th frame */
+ /* if restart period is over process EOI */
+ if ((s->buggy_avid && !s->interlaced) || s->restart_interval)
+ goto eoi_parser;
+ break;
+ case DRI:
+ mjpeg_decode_dri(s);
break;
- case DRI:
- mjpeg_decode_dri(s);
- break;
- case SOF1:
- case SOF2:
- case SOF5:
- case SOF6:
- case SOF7:
- case SOF9:
- case SOF10:
- case SOF11:
- case SOF13:
- case SOF14:
- case SOF15:
- case JPG:
- av_log(s->avctx, AV_LOG_ERROR, "mjpeg: unsupported coding type (%x)\n", start_code);
- break;
-// default:
-// printf("mjpeg: unsupported marker (%x)\n", start_code);
-// break;
+ case SOF1:
+ case SOF5:
+ case SOF6:
+ case SOF7:
+ case SOF9:
+ case SOF10:
+ case SOF11:
+ case SOF13:
+ case SOF14:
+ case SOF15:
+ case JPG:
+ av_log(avctx, AV_LOG_ERROR, "mjpeg: unsupported coding type (%x)\n", start_code);
+ break;
+// default:
+// printf("mjpeg: unsupported marker (%x)\n", start_code);
+// break;
}
not_the_end:
- /* eof process start code */
- buf_ptr += (get_bits_count(&s->gb)+7)/8;
- dprintf("marker parser used %d bytes (%d bits)\n",
- (get_bits_count(&s->gb)+7)/8, get_bits_count(&s->gb));
+ /* eof process start code */
+ buf_ptr += (get_bits_count(&s->gb)+7)/8;
+ av_log(avctx, AV_LOG_DEBUG, "marker parser used %d bytes (%d bits)\n",
+ (get_bits_count(&s->gb)+7)/8, get_bits_count(&s->gb));
}
}
}
the_end:
- dprintf("mjpeg decode frame unused %d bytes\n", buf_end - buf_ptr);
+ av_log(avctx, AV_LOG_DEBUG, "mjpeg decode frame unused %d bytes\n", buf_end - buf_ptr);
// return buf_end - buf_ptr;
return buf_ptr - buf;
}
-static int mjpegb_decode_frame(AVCodecContext *avctx,
+static int mjpegb_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
buf_ptr = buf;
buf_end = buf + buf_size;
-
+
read_header:
/* reset on every SOI */
s->restart_interval = 0;
+ s->restart_count = 0;
s->mjpb_skiptosod = 0;
init_get_bits(&hgb, buf_ptr, /*buf_size*/(buf_end - buf_ptr)*8);
skip_bits(&hgb, 32); /* reserved zeros */
-
- if (get_bits_long(&hgb, 32) != be2me_32(ff_get_fourcc("mjpg")))
+
+ if (get_bits_long(&hgb, 32) != MKBETAG('m','j','p','g'))
{
- dprintf("not mjpeg-b (bad fourcc)\n");
- return 0;
+ av_log(avctx, AV_LOG_WARNING, "not mjpeg-b (bad fourcc)\n");
+ return 0;
}
field_size = get_bits_long(&hgb, 32); /* field size */
- dprintf("field size: 0x%x\n", field_size);
+ av_log(avctx, AV_LOG_DEBUG, "field size: 0x%x\n", field_size);
skip_bits(&hgb, 32); /* padded field size */
second_field_offs = get_bits_long(&hgb, 32);
- dprintf("second field offs: 0x%x\n", second_field_offs);
+ av_log(avctx, AV_LOG_DEBUG, "second field offs: 0x%x\n", second_field_offs);
if (second_field_offs)
- s->interlaced = 1;
+ s->interlaced = 1;
dqt_offs = get_bits_long(&hgb, 32);
- dprintf("dqt offs: 0x%x\n", dqt_offs);
+ av_log(avctx, AV_LOG_DEBUG, "dqt offs: 0x%x\n", dqt_offs);
if (dqt_offs)
{
- init_get_bits(&s->gb, buf+dqt_offs, (buf_end - (buf+dqt_offs))*8);
- s->start_code = DQT;
- mjpeg_decode_dqt(s);
+ init_get_bits(&s->gb, buf+dqt_offs, (buf_end - (buf+dqt_offs))*8);
+ s->start_code = DQT;
+ mjpeg_decode_dqt(s);
}
-
+
dht_offs = get_bits_long(&hgb, 32);
- dprintf("dht offs: 0x%x\n", dht_offs);
+ av_log(avctx, AV_LOG_DEBUG, "dht offs: 0x%x\n", dht_offs);
if (dht_offs)
{
- init_get_bits(&s->gb, buf+dht_offs, (buf_end - (buf+dht_offs))*8);
- s->start_code = DHT;
- mjpeg_decode_dht(s);
+ init_get_bits(&s->gb, buf+dht_offs, (buf_end - (buf+dht_offs))*8);
+ s->start_code = DHT;
+ mjpeg_decode_dht(s);
}
sof_offs = get_bits_long(&hgb, 32);
- dprintf("sof offs: 0x%x\n", sof_offs);
+ av_log(avctx, AV_LOG_DEBUG, "sof offs: 0x%x\n", sof_offs);
if (sof_offs)
{
- init_get_bits(&s->gb, buf+sof_offs, (buf_end - (buf+sof_offs))*8);
- s->start_code = SOF0;
- if (mjpeg_decode_sof(s) < 0)
- return -1;
+ init_get_bits(&s->gb, buf+sof_offs, (buf_end - (buf+sof_offs))*8);
+ s->start_code = SOF0;
+ if (mjpeg_decode_sof(s) < 0)
+ return -1;
}
sos_offs = get_bits_long(&hgb, 32);
- dprintf("sos offs: 0x%x\n", sos_offs);
+ av_log(avctx, AV_LOG_DEBUG, "sos offs: 0x%x\n", sos_offs);
sod_offs = get_bits_long(&hgb, 32);
- dprintf("sod offs: 0x%x\n", sod_offs);
+ av_log(avctx, AV_LOG_DEBUG, "sod offs: 0x%x\n", sod_offs);
if (sos_offs)
{
-// init_get_bits(&s->gb, buf+sos_offs, (buf_end - (buf+sos_offs))*8);
- init_get_bits(&s->gb, buf+sos_offs, field_size*8);
- s->mjpb_skiptosod = (sod_offs - sos_offs - show_bits(&s->gb, 16));
- s->start_code = SOS;
- mjpeg_decode_sos(s);
+// init_get_bits(&s->gb, buf+sos_offs, (buf_end - (buf+sos_offs))*8);
+ init_get_bits(&s->gb, buf+sos_offs, field_size*8);
+ s->mjpb_skiptosod = (sod_offs - sos_offs - show_bits(&s->gb, 16));
+ s->start_code = SOS;
+ mjpeg_decode_sos(s);
}
if (s->interlaced) {
s->bottom_field ^= 1;
/* if not bottom field, do not output image yet */
if (s->bottom_field && second_field_offs)
- {
- buf_ptr = buf + second_field_offs;
- second_field_offs = 0;
- goto read_header;
- }
+ {
+ buf_ptr = buf + second_field_offs;
+ second_field_offs = 0;
+ goto read_header;
+ }
}
//XXX FIXME factorize, this looks very similar to the EOI code
*picture= s->picture;
*data_size = sizeof(AVFrame);
-
+
if(!s->lossless){
- picture->quality= FFMAX(FFMAX(s->qscale[0], s->qscale[1]), s->qscale[2]);
+ picture->quality= FFMAX(FFMAX(s->qscale[0], s->qscale[1]), s->qscale[2]);
picture->qstride= 0;
picture->qscale_table= s->qscale_table;
memset(picture->qscale_table, picture->quality, (s->width+15)/16);
#include "sp5x.h"
-static int sp5x_decode_frame(AVCodecContext *avctx,
+static int sp5x_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
int i = 0, j = 0;
if (!avctx->width || !avctx->height)
- return -1;
+ return -1;
buf_ptr = buf;
buf_end = buf + buf_size;
#if 1
recoded = av_mallocz(buf_size + 1024);
if (!recoded)
- return -1;
+ return -1;
/* SOI */
recoded[j++] = 0xFF;
for (i = 14; i < buf_size && j < buf_size+1024-2; i++)
{
- recoded[j++] = buf[i];
- if (buf[i] == 0xff)
- recoded[j++] = 0;
+ recoded[j++] = buf[i];
+ if (buf[i] == 0xff)
+ recoded[j++] = 0;
}
/* EOI */
s->quant_index[2] = 1;
s->h_max = 2;
s->v_max = 2;
-
+
s->qscale_table = av_mallocz((s->width+15)/16);
avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV420P : PIX_FMT_YUVJ420;
s->interlaced = 0;
-
+
s->picture.reference = 0;
if (avctx->get_buffer(avctx, &s->picture) < 0)
{
- fprintf(stderr, "get_buffer() failed\n");
- return -1;
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return -1;
}
s->picture.pict_type = I_TYPE;
s->picture.key_frame = 1;
for (i = 0; i < 3; i++)
- s->linesize[i] = s->picture.linesize[i] << s->interlaced;
+ s->linesize[i] = s->picture.linesize[i] << s->interlaced;
/* DQT */
for (i = 0; i < 64; i++)
{
- j = s->scantable.permutated[i];
- s->quant_matrixes[0][j] = sp5x_quant_table[(qscale * 2) + i];
+ j = s->scantable.permutated[i];
+ s->quant_matrixes[0][j] = sp5x_quant_table[(qscale * 2) + i];
}
s->qscale[0] = FFMAX(
- s->quant_matrixes[0][s->scantable.permutated[1]],
- s->quant_matrixes[0][s->scantable.permutated[8]]) >> 1;
+ s->quant_matrixes[0][s->scantable.permutated[1]],
+ s->quant_matrixes[0][s->scantable.permutated[8]]) >> 1;
for (i = 0; i < 64; i++)
{
- j = s->scantable.permutated[i];
- s->quant_matrixes[1][j] = sp5x_quant_table[(qscale * 2) + 1 + i];
+ j = s->scantable.permutated[i];
+ s->quant_matrixes[1][j] = sp5x_quant_table[(qscale * 2) + 1 + i];
}
s->qscale[1] = FFMAX(
- s->quant_matrixes[1][s->scantable.permutated[1]],
- s->quant_matrixes[1][s->scantable.permutated[8]]) >> 1;
+ s->quant_matrixes[1][s->scantable.permutated[1]],
+ s->quant_matrixes[1][s->scantable.permutated[8]]) >> 1;
/* DHT */
s->v_scount[2] = s->v_count[2];
s->dc_index[2] = 1;
s->ac_index[2] = 1;
-
+
for (i = 0; i < 3; i++)
- s->last_dc[i] = 1024;
+ s->last_dc[i] = 1024;
s->mb_width = (s->width * s->h_max * 8 -1) / (s->h_max * 8);
s->mb_height = (s->height * s->v_max * 8 -1) / (s->v_max * 8);
init_get_bits(&s->gb, buf+14, (buf_size-14)*8);
-
+
return mjpeg_decode_scan(s);
#endif
av_free(s->buffer);
av_free(s->qscale_table);
-
+
for(i=0;i<2;i++) {
for(j=0;j<4;j++)
free_vlc(&s->vlcs[i][j]);
return 0;
}
+static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
+ uint8_t **poutbuf, int *poutbuf_size,
+ const uint8_t *buf, int buf_size, int keyframe)
+{
+ uint8_t *poutbufp;
+ int i;
+
+ if (avctx->codec_id != CODEC_ID_MJPEG) {
+ av_log(avctx, AV_LOG_ERROR, "mjpega bitstream filter only applies to mjpeg codec\n");
+ return 0;
+ }
+
+ *poutbuf_size = 0;
+ *poutbuf = av_malloc(buf_size + 44 + FF_INPUT_BUFFER_PADDING_SIZE);
+ poutbufp = *poutbuf;
+ bytestream_put_byte(&poutbufp, 0xff);
+ bytestream_put_byte(&poutbufp, SOI);
+ bytestream_put_byte(&poutbufp, 0xff);
+ bytestream_put_byte(&poutbufp, APP1);
+ bytestream_put_be16(&poutbufp, 42); /* size */
+ bytestream_put_be32(&poutbufp, 0);
+ bytestream_put_buffer(&poutbufp, "mjpg", 4);
+ bytestream_put_be32(&poutbufp, buf_size + 44); /* field size */
+ bytestream_put_be32(&poutbufp, buf_size + 44); /* pad field size */
+ bytestream_put_be32(&poutbufp, 0); /* next ptr */
+
+ for (i = 0; i < buf_size - 1; i++) {
+ if (buf[i] == 0xff) {
+ switch (buf[i + 1]) {
+ case DQT: /* quant off */
+ case DHT: /* huff off */
+ case SOF0: /* image off */
+ bytestream_put_be32(&poutbufp, i + 46);
+ break;
+ case SOS:
+ bytestream_put_be32(&poutbufp, i + 46); /* scan off */
+ bytestream_put_be32(&poutbufp, i + 46 + AV_RB16(buf + i + 2)); /* data off */
+ bytestream_put_buffer(&poutbufp, buf + 2, buf_size - 2); /* skip already written SOI */
+ *poutbuf_size = poutbufp - *poutbuf;
+ return 1;
+ case APP1:
+ if (i + 8 < buf_size && AV_RL32(buf + i + 8) == ff_get_fourcc("mjpg")) {
+ av_log(avctx, AV_LOG_ERROR, "bitstream already formatted\n");
+ memcpy(*poutbuf, buf, buf_size);
+ *poutbuf_size = buf_size;
+ return 1;
+ }
+ }
+ }
+ }
+ av_freep(poutbuf);
+ av_log(avctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
+ return 0;
+}
+
AVCodec mjpeg_decoder = {
"mjpeg",
CODEC_TYPE_VIDEO,
ff_parse_close,
};
+AVBitStreamFilter mjpega_dump_header_bsf = {
+ "mjpegadump",
+ 0,
+ mjpega_dump_header,
+};
projects / ffmpeg / blobdiff