diff options
Diffstat (limited to 'contrib/ffmpeg/libavcodec/pnm.c')
| -rw-r--r-- | contrib/ffmpeg/libavcodec/pnm.c | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/contrib/ffmpeg/libavcodec/pnm.c b/contrib/ffmpeg/libavcodec/pnm.c deleted file mode 100644 index 1f28aced6..000000000 --- a/contrib/ffmpeg/libavcodec/pnm.c +++ /dev/null @@ -1,147 +0,0 @@ -/* - * PNM image format - * Copyright (c) 2002, 2003 Fabrice Bellard. - * - * 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" -#include "pnm.h" - -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) -{ - char *s; - int c; - - /* skip spaces and comments */ - for(;;) { - c = *sc->bytestream++; - if (c == '#') { - do { - c = *sc->bytestream++; - } while (c != '\n' && sc->bytestream < sc->bytestream_end); - } else if (!pnm_space(c)) { - break; - } - } - - s = str; - while (sc->bytestream < sc->bytestream_end && !pnm_space(c)) { - if ((s - str) < buf_size - 1) - *s++ = c; - c = *sc->bytestream++; - } - *s = '\0'; -} - -int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ - char buf1[32], tuple_type[32]; - int h, w, depth, maxval; - - pnm_get(s, buf1, sizeof(buf1)); - if (!strcmp(buf1, "P4")) { - avctx->pix_fmt = PIX_FMT_MONOWHITE; - } else if (!strcmp(buf1, "P5")) { - if (avctx->codec_id == CODEC_ID_PGMYUV) - avctx->pix_fmt = PIX_FMT_YUV420P; - else - avctx->pix_fmt = PIX_FMT_GRAY8; - } else if (!strcmp(buf1, "P6")) { - avctx->pix_fmt = PIX_FMT_RGB24; - } else if (!strcmp(buf1, "P7")) { - w = -1; - h = -1; - maxval = -1; - depth = -1; - tuple_type[0] = '\0'; - for(;;) { - pnm_get(s, buf1, sizeof(buf1)); - if (!strcmp(buf1, "WIDTH")) { - pnm_get(s, buf1, sizeof(buf1)); - w = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "HEIGHT")) { - pnm_get(s, buf1, sizeof(buf1)); - h = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "DEPTH")) { - pnm_get(s, buf1, sizeof(buf1)); - depth = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "MAXVAL")) { - pnm_get(s, buf1, sizeof(buf1)); - maxval = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "TUPLETYPE")) { - pnm_get(s, tuple_type, sizeof(tuple_type)); - } else if (!strcmp(buf1, "ENDHDR")) { - break; - } else { - return -1; - } - } - /* 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 - avctx->pix_fmt = PIX_FMT_GRAY8; - } else if (depth == 3) { - avctx->pix_fmt = PIX_FMT_RGB24; - } else if (depth == 4) { - avctx->pix_fmt = PIX_FMT_RGB32; - } else { - return -1; - } - return 0; - } else { - return -1; - } - pnm_get(s, buf1, sizeof(buf1)); - avctx->width = atoi(buf1); - if (avctx->width <= 0) - return -1; - pnm_get(s, buf1, sizeof(buf1)); - avctx->height = atoi(buf1); - if(avcodec_check_dimensions(avctx, avctx->width, avctx->height)) - return -1; - if (avctx->pix_fmt != PIX_FMT_MONOWHITE) { - pnm_get(s, buf1, sizeof(buf1)); - s->maxval = atoi(buf1); - if(s->maxval >= 256 && avctx->pix_fmt == PIX_FMT_GRAY8) { - avctx->pix_fmt = PIX_FMT_GRAY16BE; - if (s->maxval != 65535) - avctx->pix_fmt = PIX_FMT_GRAY16; - } - } - /* more check if YUV420 */ - if (avctx->pix_fmt == PIX_FMT_YUV420P) { - if ((avctx->width & 1) != 0) - return -1; - h = (avctx->height * 2); - if ((h % 3) != 0) - return -1; - h /= 3; - avctx->height = h; - } - return 0; -} |