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Enable faxcompr.

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Originally committed as revision 16349 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2008-12-26 18:42:26 +00:00
parent a56f82eaf8
commit 92799d3213
2 changed files with 36 additions and 10 deletions
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2
libavcodec/Makefile
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@ -202,7 +202,7 @@ OBJS-$(CONFIG_TARGA_ENCODER) += targaenc.o rle.o
OBJS-$(CONFIG_THEORA_DECODER) += vp3.o xiph.o vp3dsp.o
OBJS-$(CONFIG_THP_DECODER) += mjpegdec.o mjpeg.o
OBJS-$(CONFIG_TIERTEXSEQVIDEO_DECODER) += tiertexseqv.o
OBJS-$(CONFIG_TIFF_DECODER) += tiff.o lzw.o
OBJS-$(CONFIG_TIFF_DECODER) += tiff.o lzw.o faxcompr.o
OBJS-$(CONFIG_TIFF_ENCODER) += tiffenc.o rle.o lzwenc.o
OBJS-$(CONFIG_TRUEMOTION1_DECODER) += truemotion1.o
OBJS-$(CONFIG_TRUEMOTION2_DECODER) += truemotion2.o

44
libavcodec/tiff.c
View File

@ -30,6 +30,7 @@
#endif
#include "lzw.h"
#include "tiff.h"
#include "faxcompr.h"
typedef struct TiffContext {
@ -41,6 +42,7 @@ typedef struct TiffContext {
int le;
int compr;
int invert;
int fax_opts;
int predictor;
int strips, rps, sstype;
@ -103,6 +105,29 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
return -1;
}
}
if(s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4){
int i, ret = 0;
uint8_t *src2 = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
if(!src2 || (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE < (unsigned)size){
av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
return -1;
}
for(i = 0; i < size; i++)
src2[i] = ff_reverse[src[i]];
memset(src2+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
if(s->compr == TIFF_G3 && !(s->fax_opts & 1))
s->compr = TIFF_CCITT_RLE;
switch(s->compr){
case TIFF_CCITT_RLE:
case TIFF_G3:
case TIFF_G4:
ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride, s->compr);
break;
}
av_free(src2);
return ret;
}
for(line = 0; line < lines; line++){
if(src - ssrc > size){
av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
@ -265,6 +290,11 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
case TIFF_RAW:
case TIFF_PACKBITS:
case TIFF_LZW:
case TIFF_CCITT_RLE:
break;
case TIFF_G3:
case TIFF_G4:
s->fax_opts = 0;
break;
case TIFF_DEFLATE:
case TIFF_ADOBE_DEFLATE:
@ -274,15 +304,6 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
av_log(s->avctx, AV_LOG_ERROR, "Deflate: ZLib not compiled in\n");
return -1;
#endif
case TIFF_G3:
av_log(s->avctx, AV_LOG_ERROR, "CCITT G3 compression is not supported\n");
return -1;
case TIFF_G4:
av_log(s->avctx, AV_LOG_ERROR, "CCITT G4 compression is not supported\n");
return -1;
case TIFF_CCITT_RLE:
av_log(s->avctx, AV_LOG_ERROR, "CCITT RLE compression is not supported\n");
return -1;
case TIFF_JPEG:
case TIFF_NEWJPEG:
av_log(s->avctx, AV_LOG_ERROR, "JPEG compression is not supported\n");
@ -373,6 +394,10 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
return -1;
}
break;
case TIFF_T4OPTIONS:
case TIFF_T6OPTIONS:
s->fax_opts = value;
break;
}
return 0;
}
@ -487,6 +512,7 @@ static av_cold int tiff_init(AVCodecContext *avctx){
avctx->coded_frame= (AVFrame*)&s->picture;
s->picture.data[0] = NULL;
ff_lzw_decode_open(&s->lzw);
ff_ccitt_unpack_init();
return 0;
}