* Copyright (c) 2003 Michael Niedermayer
* Copyright (c) 2006 Konstantin Shishkov
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
* (or test broken JPEG-LS decoder) and slow down ordinary decoding a bit.
*
* There is no Golomb code with length >= 32 bits possible, so check and
-* avoid situation of 32 zeros, FFmpeg Golomb decoder is painfully slow
+* avoid situation of 32 zeros, Libav Golomb decoder is painfully slow
* on this errors.
*/
//#define JLS_BROKEN
*/
int ff_jpegls_decode_lse(MJpegDecodeContext *s)
{
- int len, id;
+ int id;
- /* XXX: verify len field validity */
- len = get_bits(&s->gb, 16);
+ skip_bits(&s->gb, 16); /* length: FIXME: verify field validity */
id = get_bits(&s->gb, 8);
switch(id){
av_log(s->avctx, AV_LOG_ERROR, "invalid id %d\n", id);
return -1;
}
-// av_log(s->avctx, AV_LOG_DEBUG, "ID=%i, T=%i,%i,%i\n", id, s->t1, s->t2, s->t3);
+ av_dlog(s->avctx, "ID=%i, T=%i,%i,%i\n", id, s->t1, s->t2, s->t3);
return 0;
}
JLSState *state;
int off = 0, stride = 1, width, shift;
- zero = av_mallocz(s->picture.linesize[0]);
+ zero = av_mallocz(s->picture_ptr->linesize[0]);
last = zero;
- cur = s->picture.data[0];
+ cur = s->picture_ptr->data[0];
state = av_mallocz(sizeof(JLSState));
/* initialize JPEG-LS state from JPEG parameters */
else
shift = point_transform + (16 - s->bits);
-// av_log(s->avctx, AV_LOG_DEBUG, "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",s->width,s->height,state->near,state->maxval,state->T1,state->T2,state->T3,state->reset,state->limit,state->qbpp, state->range);
-// av_log(s->avctx, AV_LOG_DEBUG, "JPEG params: ILV=%i Pt=%i BPP=%i, scan = %i\n", ilv, point_transform, s->bits, s->cur_scan);
+ av_dlog(s->avctx, "JPEG-LS params: %ix%i NEAR=%i MV=%i T(%i,%i,%i) RESET=%i, LIMIT=%i, qbpp=%i, RANGE=%i\n",
+ s->width, s->height, state->near, state->maxval,
+ state->T1, state->T2, state->T3,
+ state->reset, state->limit, state->qbpp, state->range);
+ av_dlog(s->avctx, "JPEG params: ILV=%i Pt=%i BPP=%i, scan = %i\n",
+ ilv, point_transform, s->bits, s->cur_scan);
if(ilv == 0) { /* separate planes */
off = s->cur_scan - 1;
stride = (s->nb_components > 1) ? 3 : 1;
t = *((uint16_t*)last);
}
last = cur;
- cur += s->picture.linesize[0];
+ cur += s->picture_ptr->linesize[0];
if (s->restart_interval && !--s->restart_count) {
align_get_bits(&s->gb);
} else if(ilv == 1) { /* line interleaving */
int j;
int Rc[3] = {0, 0, 0};
- memset(cur, 0, s->picture.linesize[0]);
+ memset(cur, 0, s->picture_ptr->linesize[0]);
width = s->width * 3;
for(i = 0; i < s->height; i++) {
for(j = 0; j < 3; j++) {
}
}
last = cur;
- cur += s->picture.linesize[0];
+ cur += s->picture_ptr->linesize[0];
}
} else if(ilv == 2) { /* sample interleaving */
av_log(s->avctx, AV_LOG_ERROR, "Sample interleaved images are not supported.\n");
w = s->width * s->nb_components;
if(s->bits <= 8){
- uint8_t *src = s->picture.data[0];
+ uint8_t *src = s->picture_ptr->data[0];
for(i = 0; i < s->height; i++){
for(x = off; x < w; x+= stride){
src[x] <<= shift;
}
- src += s->picture.linesize[0];
+ src += s->picture_ptr->linesize[0];
}
}else{
- uint16_t *src = (uint16_t*) s->picture.data[0];
+ uint16_t *src = (uint16_t*) s->picture_ptr->data[0];
for(i = 0; i < s->height; i++){
for(x = 0; x < w; x++){
src[x] <<= shift;
}
- src += s->picture.linesize[0]/2;
+ src += s->picture_ptr->linesize[0]/2;
}
}
}
AVCodec ff_jpegls_decoder = {
- "jpegls",
- AVMEDIA_TYPE_VIDEO,
- CODEC_ID_JPEGLS,
- sizeof(MJpegDecodeContext),
- ff_mjpeg_decode_init,
- NULL,
- ff_mjpeg_decode_end,
- ff_mjpeg_decode_frame,
- CODEC_CAP_DR1,
- .long_name = NULL_IF_CONFIG_SMALL("JPEG-LS"),
+ .name = "jpegls",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .id = AV_CODEC_ID_JPEGLS,
+ .priv_data_size = sizeof(MJpegDecodeContext),
+ .init = ff_mjpeg_decode_init,
+ .close = ff_mjpeg_decode_end,
+ .decode = ff_mjpeg_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("JPEG-LS"),
};
projects / ffmpeg / blobdiff