* 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 "bytestream.h"
#include "tiff.h"
#include "rle.h"
+#include "lzw.h"
#define TIFF_MAX_ENTRY 32
uint8_t *buf_start; ///< pointer to first byte in buffer
int buf_size; ///< buffer size
uint16_t subsampling[2]; ///< YUV subsampling factors
+ struct LZWEncodeState *lzws; ///< LZW Encode state
} TiffEncoderContext;
enum TiffTags tag, enum TiffTypes type, int val){
uint16_t w = val;
uint32_t dw= val;
- add_entry(s, tag, type, 1, type == TIFF_SHORT ? &w : &dw);
+ add_entry(s, tag, type, 1, type == TIFF_SHORT ? (void *)&w : (void *)&dw);
}
/**
return n;
case TIFF_PACKBITS:
return ff_rle_encode(dst, s->buf_size - (*s->buf - s->buf_start), src, 1, n, 2, 0xff, -1, 0);
+ case TIFF_LZW:
+ return ff_lzw_encode(s->lzws, src, n);
default:
return -1;
}
s->compr = TIFF_PACKBITS;
if (avctx->compression_level == 0) {
s->compr = TIFF_RAW;
+ } else if(avctx->compression_level == 2) {
+ s->compr = TIFF_LZW;
#ifdef CONFIG_ZLIB
- } else if ((avctx->compression_level > 2)) {
+ } else if ((avctx->compression_level >= 3)) {
s->compr = TIFF_DEFLATE;
#endif
}
return -1;
}
if (!is_yuv)
- s->bpp_tab_size = (s->bpp >> 3);
+ s->bpp_tab_size = (s->bpp >> 3);
- if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE)
+ if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE || s->compr == TIFF_LZW)
//best choose for DEFLATE
s->rps = s->height;
else
j += s->subsampling[1] - 1;
}
else
- memcpy(zbuf + j * bytes_per_row,
- p->data[0] + j * p->linesize[0], bytes_per_row);
+ memcpy(zbuf + j * bytes_per_row,
+ p->data[0] + j * p->linesize[0], bytes_per_row);
zn += bytes_per_row;
}
n = encode_strip(s, zbuf, ptr, zn, s->compr);
} else
#endif
{
+ if(s->compr == TIFF_LZW)
+ s->lzws = av_malloc(ff_lzw_encode_state_size);
for (i = 0; i < s->height; i++) {
if (strip_sizes[i / s->rps] == 0) {
+ if(s->compr == TIFF_LZW){
+ ff_lzw_encode_init(s->lzws, ptr, s->buf_size - (*s->buf - s->buf_start), 12);
+ }
strip_offsets[i / s->rps] = ptr - buf;
}
if (is_yuv){
}
strip_sizes[i / s->rps] += n;
ptr += n;
+ if(s->compr == TIFF_LZW && (i==s->height-1 || i%s->rps == s->rps-1)){
+ int ret;
+ ret = ff_lzw_encode_flush(s->lzws);
+ strip_sizes[(i / s->rps )] += ret ;
+ ptr += ret;
+ }
}
+ if(s->compr == TIFF_LZW)
+ av_free(s->lzws);
}
s->num_entries = 0;
add_entry(s, TIFF_XRES, TIFF_RATIONAL, 1, res);
add_entry(s, TIFF_YRES, TIFF_RATIONAL, 1, res);
add_entry1(s,TIFF_RES_UNIT, TIFF_SHORT, 2);
+
+ if(!(avctx->flags & CODEC_FLAG_BITEXACT))
add_entry(s, TIFF_SOFTWARE_NAME, TIFF_STRING,
strlen(LIBAVCODEC_IDENT) + 1, LIBAVCODEC_IDENT);
PIX_FMT_MONOBLACK, PIX_FMT_MONOWHITE,
PIX_FMT_YUV420P, PIX_FMT_YUV422P,
PIX_FMT_YUV444P, PIX_FMT_YUV410P,
- PIX_FMT_YUV411P
+ PIX_FMT_YUV411P,
-1}
};