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Diffstat (limited to 'contrib/ffmpeg/libavcodec/tiff.c')
-rw-r--r--contrib/ffmpeg/libavcodec/tiff.c532
1 files changed, 0 insertions, 532 deletions
diff --git a/contrib/ffmpeg/libavcodec/tiff.c b/contrib/ffmpeg/libavcodec/tiff.c
deleted file mode 100644
index 344b5a311..000000000
--- a/contrib/ffmpeg/libavcodec/tiff.c
+++ /dev/null
@@ -1,532 +0,0 @@
-/*
- * TIFF image decoder
- * Copyright (c) 2006 Konstantin Shishkov
- *
- * 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 2.1 of the License, or (at your option) any later version.
- *
- * 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 FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- */
-#include "avcodec.h"
-#ifdef CONFIG_ZLIB
-#include <zlib.h>
-#endif
-#include "lzw.h"
-
-/* abridged list of TIFF tags */
-enum TiffTags{
- TIFF_WIDTH = 0x100,
- TIFF_HEIGHT,
- TIFF_BPP,
- TIFF_COMPR,
- TIFF_INVERT = 0x106,
- TIFF_STRIP_OFFS = 0x111,
- TIFF_ROWSPERSTRIP = 0x116,
- TIFF_STRIP_SIZE,
- TIFF_PLANAR = 0x11C,
- TIFF_XPOS = 0x11E,
- TIFF_YPOS = 0x11F,
- TIFF_PREDICTOR = 0x13D,
- TIFF_PAL = 0x140
-};
-
-enum TiffCompr{
- TIFF_RAW = 1,
- TIFF_CCITT_RLE,
- TIFF_G3,
- TIFF_G4,
- TIFF_LZW,
- TIFF_JPEG,
- TIFF_NEWJPEG,
- TIFF_ADOBE_DEFLATE,
- TIFF_PACKBITS = 0x8005,
- TIFF_DEFLATE = 0x80B2
-};
-
-enum TiffTypes{
- TIFF_BYTE = 1,
- TIFF_STRING,
- TIFF_SHORT,
- TIFF_LONG,
- TIFF_LONGLONG
-};
-
-/** sizes of various TIFF field types */
-static const int type_sizes[6] = {
- 0, 1, 100, 2, 4, 8
-};
-
-typedef struct TiffContext {
- AVCodecContext *avctx;
- AVFrame picture;
-
- int width, height;
- unsigned int bpp;
- int le;
- int compr;
- int invert;
-
- int strips, rps;
- int sot;
- uint8_t* stripdata;
- uint8_t* stripsizes;
- int stripsize, stripoff;
- LZWState *lzw;
-} TiffContext;
-
-static int tget_short(uint8_t **p, int le){
- int v = le ? AV_RL16(*p) : AV_RB16(*p);
- *p += 2;
- return v;
-}
-
-static int tget_long(uint8_t **p, int le){
- int v = le ? AV_RL32(*p) : AV_RB32(*p);
- *p += 4;
- return v;
-}
-
-static int tget(uint8_t **p, int type, int le){
- switch(type){
- case TIFF_BYTE : return *(*p)++;
- case TIFF_SHORT: return tget_short(p, le);
- case TIFF_LONG : return tget_long (p, le);
- default : return -1;
- }
-}
-
-static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, uint8_t *src, int size, int lines){
- int c, line, pixels, code;
- uint8_t *ssrc = src;
- int width = s->width * (s->bpp / 8);
-#ifdef CONFIG_ZLIB
- uint8_t *zbuf; unsigned long outlen;
-
- if(s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE){
- outlen = width * lines;
- zbuf = av_malloc(outlen);
- if(uncompress(zbuf, &outlen, src, size) != Z_OK){
- av_log(s->avctx, AV_LOG_ERROR, "Uncompressing failed (%lu of %lu)\n", outlen, (unsigned long)width * lines);
- av_free(zbuf);
- return -1;
- }
- src = zbuf;
- for(line = 0; line < lines; line++){
- memcpy(dst, src, width);
- dst += stride;
- src += width;
- }
- av_free(zbuf);
- return 0;
- }
-#endif
- if(s->compr == TIFF_LZW){
- if(ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0){
- av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
- return -1;
- }
- }
- for(line = 0; line < lines; line++){
- if(src - ssrc > size){
- av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
- return -1;
- }
- switch(s->compr){
- case TIFF_RAW:
- memcpy(dst, src, s->width * (s->bpp / 8));
- src += s->width * (s->bpp / 8);
- break;
- case TIFF_PACKBITS:
- for(pixels = 0; pixels < width;){
- code = (int8_t)*src++;
- if(code >= 0){
- code++;
- if(pixels + code > width){
- av_log(s->avctx, AV_LOG_ERROR, "Copy went out of bounds\n");
- return -1;
- }
- memcpy(dst + pixels, src, code);
- src += code;
- pixels += code;
- }else if(code != -128){ // -127..-1
- code = (-code) + 1;
- if(pixels + code > width){
- av_log(s->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
- return -1;
- }
- c = *src++;
- memset(dst + pixels, c, code);
- pixels += code;
- }
- }
- break;
- case TIFF_LZW:
- pixels = ff_lzw_decode(s->lzw, dst, width);
- if(pixels < width){
- av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n", pixels, width);
- return -1;
- }
- break;
- }
- dst += stride;
- }
- return 0;
-}
-
-
-static int tiff_decode_tag(TiffContext *s, uint8_t *start, uint8_t *buf, uint8_t *end_buf, AVFrame *pic)
-{
- int tag, type, count, off, value = 0;
- uint8_t *src, *dst;
- int i, j, ssize, soff, stride;
- int *pal, *rp, *gp, *bp;
-
- tag = tget_short(&buf, s->le);
- type = tget_short(&buf, s->le);
- count = tget_long(&buf, s->le);
- off = tget_long(&buf, s->le);
-
- if(count == 1){
- switch(type){
- case TIFF_BYTE:
- case TIFF_SHORT:
- buf -= 4;
- value = tget(&buf, type, s->le);
- buf = NULL;
- break;
- case TIFF_LONG:
- value = off;
- buf = NULL;
- break;
- default:
- value = -1;
- buf = start + off;
- }
- }else if(type_sizes[type] * count <= 4){
- buf -= 4;
- }else{
- buf = start + off;
- }
-
- if(buf && (buf < start || buf > end_buf)){
- av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
- return -1;
- }
-
- switch(tag){
- case TIFF_WIDTH:
- s->width = value;
- break;
- case TIFF_HEIGHT:
- s->height = value;
- break;
- case TIFF_BPP:
- if(count == 1) s->bpp = value;
- else{
- switch(type){
- case TIFF_BYTE:
- s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) + ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
- break;
- case TIFF_SHORT:
- case TIFF_LONG:
- s->bpp = 0;
- for(i = 0; i < count; i++) s->bpp += tget(&buf, type, s->le);
- break;
- default:
- s->bpp = -1;
- }
- }
- switch(s->bpp){
- case 8:
- s->avctx->pix_fmt = PIX_FMT_PAL8;
- break;
- case 24:
- s->avctx->pix_fmt = PIX_FMT_RGB24;
- break;
- case 16:
- if(count == 1){
- s->avctx->pix_fmt = PIX_FMT_GRAY16BE;
- }else{
- av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%i)\n", s->bpp);
- return -1;
- }
- break;
- default:
- av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%i)\n", s->bpp);
- return -1;
- }
- if(s->width != s->avctx->width || s->height != s->avctx->height){
- if(avcodec_check_dimensions(s->avctx, s->width, s->height))
- return -1;
- avcodec_set_dimensions(s->avctx, s->width, s->height);
- }
- if(s->picture.data[0])
- s->avctx->release_buffer(s->avctx, &s->picture);
- if(s->avctx->get_buffer(s->avctx, &s->picture) < 0){
- av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
- return -1;
- }
- if(s->bpp == 8){
- /* make default grayscale pal */
- pal = s->picture.data[1];
- for(i = 0; i < 256; i++)
- pal[i] = i * 0x010101;
- }
- break;
- case TIFF_COMPR:
- s->compr = value;
- switch(s->compr){
- case TIFF_RAW:
- case TIFF_PACKBITS:
- case TIFF_LZW:
- break;
- case TIFF_DEFLATE:
- case TIFF_ADOBE_DEFLATE:
-#ifdef CONFIG_ZLIB
- break;
-#else
- 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");
- return -1;
- default:
- av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", s->compr);
- return -1;
- }
- break;
- case TIFF_ROWSPERSTRIP:
- if(value < 1){
- av_log(s->avctx, AV_LOG_ERROR, "Incorrect value of rows per strip\n");
- return -1;
- }
- s->rps = value;
- break;
- case TIFF_STRIP_OFFS:
- if(count == 1){
- s->stripdata = NULL;
- s->stripoff = value;
- }else
- s->stripdata = start + off;
- s->strips = count;
- if(s->strips == 1) s->rps = s->height;
- s->sot = type;
- if(s->stripdata > end_buf){
- av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
- return -1;
- }
- break;
- case TIFF_STRIP_SIZE:
- if(count == 1){
- s->stripsizes = NULL;
- s->stripsize = value;
- s->strips = 1;
- }else{
- s->stripsizes = start + off;
- }
- s->strips = count;
- if(s->stripsizes > end_buf){
- av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
- return -1;
- }
- if(!pic->data[0]){
- av_log(s->avctx, AV_LOG_ERROR, "Picture initialization missing\n");
- return -1;
- }
- /* now we have the data and may start decoding */
- stride = pic->linesize[0];
- dst = pic->data[0];
- for(i = 0; i < s->height; i += s->rps){
- if(s->stripsizes)
- ssize = tget(&s->stripsizes, type, s->le);
- else
- ssize = s->stripsize;
-
- if(s->stripdata){
- soff = tget(&s->stripdata, s->sot, s->le);
- }else
- soff = s->stripoff;
- src = start + soff;
- if(tiff_unpack_strip(s, dst, stride, src, ssize, FFMIN(s->rps, s->height - i)) < 0)
- break;
- dst += s->rps * stride;
- }
- break;
- case TIFF_PREDICTOR:
- if(!pic->data[0]){
- av_log(s->avctx, AV_LOG_ERROR, "Picture initialization missing\n");
- return -1;
- }
- if(value == 2){
- src = pic->data[0];
- stride = pic->linesize[0];
- soff = s->bpp >> 3;
- ssize = s->width * soff;
- for(i = 0; i < s->height; i++) {
- for(j = soff; j < ssize; j++)
- src[j] += src[j - soff];
- src += stride;
- }
- }
- break;
- case TIFF_INVERT:
- switch(value){
- case 0:
- s->invert = 1;
- break;
- case 1:
- s->invert = 0;
- break;
- case 2:
- case 3:
- break;
- default:
- av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n", value);
- return -1;
- }
- break;
- case TIFF_PAL:
- if(s->avctx->pix_fmt != PIX_FMT_PAL8){
- av_log(s->avctx, AV_LOG_ERROR, "Palette met but this is not palettized format\n");
- return -1;
- }
- pal = s->picture.data[1];
- off = type_sizes[type];
- rp = buf;
- gp = buf + count / 3 * off;
- bp = buf + count / 3 * off * 2;
- off = (type_sizes[type] - 1) << 3;
- for(i = 0; i < count / 3; i++){
- j = (tget(&rp, type, s->le) >> off) << 16;
- j |= (tget(&gp, type, s->le) >> off) << 8;
- j |= tget(&bp, type, s->le) >> off;
- pal[i] = j;
- }
- break;
- case TIFF_PLANAR:
- if(value == 2){
- av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
- return -1;
- }
- break;
- }
- return 0;
-}
-
-static int decode_frame(AVCodecContext *avctx,
- void *data, int *data_size,
- uint8_t *buf, int buf_size)
-{
- TiffContext * const s = avctx->priv_data;
- AVFrame *picture = data;
- AVFrame * const p= (AVFrame*)&s->picture;
- uint8_t *orig_buf = buf, *end_buf = buf + buf_size;
- int id, le, off;
- int i, entries;
-
- //parse image header
- id = AV_RL16(buf); buf += 2;
- if(id == 0x4949) le = 1;
- else if(id == 0x4D4D) le = 0;
- else{
- av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
- return -1;
- }
- s->le = le;
- s->invert = 0;
- // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
- // that further identifies the file as a TIFF file"
- if(tget_short(&buf, le) != 42){
- av_log(avctx, AV_LOG_ERROR, "The answer to life, universe and everything is not correct!\n");
- return -1;
- }
- /* parse image file directory */
- off = tget_long(&buf, le);
- if(orig_buf + off + 14 >= end_buf){
- av_log(avctx, AV_LOG_ERROR, "IFD offset is greater than image size\n");
- return -1;
- }
- buf = orig_buf + off;
- entries = tget_short(&buf, le);
- for(i = 0; i < entries; i++){
- if(tiff_decode_tag(s, orig_buf, buf, end_buf, p) < 0)
- return -1;
- buf += 12;
- }
-
- if(s->invert){
- uint8_t *src;
- int j;
-
- src = s->picture.data[0];
- for(j = 0; j < s->height; j++){
- for(i = 0; i < s->picture.linesize[0]; i++)
- src[i] = 255 - src[i];
- src += s->picture.linesize[0];
- }
- }
- *picture= *(AVFrame*)&s->picture;
- *data_size = sizeof(AVPicture);
-
- return buf_size;
-}
-
-static int tiff_init(AVCodecContext *avctx){
- TiffContext *s = avctx->priv_data;
-
- s->width = 0;
- s->height = 0;
- s->avctx = avctx;
- avcodec_get_frame_defaults((AVFrame*)&s->picture);
- avctx->coded_frame= (AVFrame*)&s->picture;
- s->picture.data[0] = NULL;
- ff_lzw_decode_open(&s->lzw);
-
- return 0;
-}
-
-static int tiff_end(AVCodecContext *avctx)
-{
- TiffContext * const s = avctx->priv_data;
-
- ff_lzw_decode_close(&s->lzw);
- if(s->picture.data[0])
- avctx->release_buffer(avctx, &s->picture);
- return 0;
-}
-
-AVCodec tiff_decoder = {
- "tiff",
- CODEC_TYPE_VIDEO,
- CODEC_ID_TIFF,
- sizeof(TiffContext),
- tiff_init,
- NULL,
- tiff_end,
- decode_frame,
- 0,
- NULL
-};
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