* PNM image format
* Copyright (c) 2002, 2003 Fabrice Bellard.
*
- * 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
*/
#include "avcodec.h"
#include "mpegvideo.h" //only for ParseContext
AVFrame picture;
} PNMContext;
-static inline int pnm_space(int c)
+static inline int pnm_space(int c)
{
return (c == ' ' || c == '\n' || c == '\r' || c == '\t');
}
-static void pnm_get(PNMContext *sc, char *str, int buf_size)
+static void pnm_get(PNMContext *sc, char *str, int buf_size)
{
char *s;
int c;
-
+
/* skip spaces and comments */
for(;;) {
c = *sc->bytestream++;
break;
}
}
-
+
s = str;
while (sc->bytestream < sc->bytestream_end && !pnm_space(c)) {
if ((s - str) < buf_size - 1)
if (!strcmp(buf1, "P4")) {
avctx->pix_fmt = PIX_FMT_MONOWHITE;
} else if (!strcmp(buf1, "P5")) {
- if (avctx->codec_id == CODEC_ID_PGMYUV)
+ if (avctx->codec_id == CODEC_ID_PGMYUV)
avctx->pix_fmt = PIX_FMT_YUV420P;
else
avctx->pix_fmt = PIX_FMT_GRAY8;
/* check that all tags are present */
if (w <= 0 || h <= 0 || maxval <= 0 || depth <= 0 || tuple_type[0] == '\0' || avcodec_check_dimensions(avctx, w, h))
return -1;
-
+
avctx->width = w;
avctx->height = h;
if (depth == 1) {
if (maxval == 1)
avctx->pix_fmt = PIX_FMT_MONOWHITE;
- else
+ else
avctx->pix_fmt = PIX_FMT_GRAY8;
} else if (depth == 3) {
avctx->pix_fmt = PIX_FMT_RGB24;
return 0;
}
-static int pnm_decode_frame(AVCodecContext *avctx,
+static int pnm_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
s->bytestream_start=
s->bytestream= buf;
s->bytestream_end= buf + buf_size;
-
+
if(pnm_decode_header(avctx, s) < 0)
return -1;
-
+
if(p->data[0])
avctx->release_buffer(avctx, p);
}
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
-
+
switch(avctx->pix_fmt) {
default:
return -1;
do_read:
ptr = p->data[0];
linesize = p->linesize[0];
+ if(s->bytestream + n*avctx->height > s->bytestream_end)
+ return -1;
for(i = 0; i < avctx->height; i++) {
memcpy(ptr, s->bytestream, n);
s->bytestream += n;
n = avctx->width;
ptr = p->data[0];
linesize = p->linesize[0];
+ if(s->bytestream + n*avctx->height*3/2 > s->bytestream_end)
+ return -1;
for(i = 0; i < avctx->height; i++) {
memcpy(ptr, s->bytestream, n);
s->bytestream += n;
case PIX_FMT_RGBA32:
ptr = p->data[0];
linesize = p->linesize[0];
+ if(s->bytestream + avctx->width*avctx->height*4 > s->bytestream_end)
+ return -1;
for(i = 0; i < avctx->height; i++) {
int j, r, g, b, a;
*p = *pict;
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
-
+
s->bytestream_start=
s->bytestream= outbuf;
s->bytestream_end= outbuf+buf_size;
default:
return -1;
}
- snprintf(s->bytestream, s->bytestream_end - s->bytestream,
+ snprintf(s->bytestream, s->bytestream_end - s->bytestream,
"P%c\n%d %d\n",
c, avctx->width, h1);
s->bytestream += strlen(s->bytestream);
if (avctx->pix_fmt != PIX_FMT_MONOWHITE) {
- snprintf(s->bytestream, s->bytestream_end - s->bytestream,
+ snprintf(s->bytestream, s->bytestream_end - s->bytestream,
"%d\n", 255);
s->bytestream += strlen(s->bytestream);
}
s->bytestream += n;
ptr += linesize;
}
-
+
if (avctx->pix_fmt == PIX_FMT_YUV420P) {
h >>= 1;
n >>= 1;
*p = *pict;
p->pict_type= FF_I_TYPE;
p->key_frame= 1;
-
+
s->bytestream_start=
s->bytestream= outbuf;
s->bytestream_end= outbuf+buf_size;
default:
return -1;
}
- snprintf(s->bytestream, s->bytestream_end - s->bytestream,
+ snprintf(s->bytestream, s->bytestream_end - s->bytestream,
"P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLETYPE %s\nENDHDR\n",
w, h, depth, maxval, tuple_type);
s->bytestream += strlen(s->bytestream);
-
+
ptr = p->data[0];
linesize = p->linesize[0];
-
+
if (avctx->pix_fmt == PIX_FMT_RGBA32) {
int j;
unsigned int v;
}
#endif
+#ifdef CONFIG_PNM_PARSER
static int pnm_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;
pnmctx.bytestream_end= pc->buffer + pc->index;
}else{
pnmctx.bytestream_start=
- pnmctx.bytestream= buf;
- pnmctx.bytestream_end= buf + buf_size;
+ pnmctx.bytestream= (uint8_t *) buf; /* casts avoid warnings */
+ pnmctx.bytestream_end= (uint8_t *) buf + buf_size;
}
if(pnm_decode_header(avctx, &pnmctx) < 0){
if(pnmctx.bytestream < pnmctx.bytestream_end){
#endif
next= END_NOT_FOUND;
}else{
- next= pnmctx.bytestream - pnmctx.bytestream_start
+ next= pnmctx.bytestream - pnmctx.bytestream_start
+ avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
if(pnmctx.bytestream_start!=buf)
next-= pc->index;
if(next > buf_size)
next= END_NOT_FOUND;
}
-
+
if(ff_combine_frame(pc, next, (uint8_t **)&buf, &buf_size)<0){
*poutbuf = NULL;
*poutbuf_size = 0;
pnm_parse,
ff_parse_close,
};
+#endif /* CONFIG_PNM_PARSER */
#ifdef CONFIG_PGM_ENCODER
AVCodec pgm_encoder = {
pnm_encode_frame,
NULL, //encode_end,
pnm_decode_frame,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_GRAY8, -1},
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_GRAY8, -1},
};
#endif // CONFIG_PGM_ENCODER
pnm_encode_frame,
NULL, //encode_end,
pnm_decode_frame,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1},
};
#endif // CONFIG_PGMYUV_ENCODER
pnm_encode_frame,
NULL, //encode_end,
pnm_decode_frame,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, -1},
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, -1},
};
#endif // CONFIG_PPM_ENCODER
pnm_encode_frame,
NULL, //encode_end,
pnm_decode_frame,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_MONOWHITE, -1},
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_MONOWHITE, -1},
};
#endif // CONFIG_PBM_ENCODER
pam_encode_frame,
NULL, //encode_end,
pnm_decode_frame,
- .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGBA32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, -1},
+ .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGBA32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, -1},
};
#endif // CONFIG_PAM_ENCODER
projects / ffmpeg / blobdiff