X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fpnm.c;h=2a89a723f3cb8aaf3558f00373bdc0d9a9338d8a;hb=90fcac0e95b7d266c148a86506f301a2072d9de3;hp=1df61843362cce053af33ee162e4027a2d6c85ea;hpb=79396ac68573628f3b59142601db86a0f4ba7ad5;p=ffmpeg diff --git a/libavcodec/pnm.c b/libavcodec/pnm.c index 1df61843362..2a89a723f3c 100644 --- a/libavcodec/pnm.c +++ b/libavcodec/pnm.c @@ -1,53 +1,53 @@ /* * PNM image format - * Copyright (c) 2002, 2003 Fabrice Bellard. + * Copyright (c) 2002, 2003 Fabrice Bellard * - * This library is free software; you can redistribute it and/or + * This file is part of Libav. + * + * 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 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, + * 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 this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * License along with Libav; 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 -typedef struct PNMContext { - uint8_t *bytestream; - uint8_t *bytestream_start; - uint8_t *bytestream_end; - AVFrame picture; -} PNMContext; +#include +#include + +#include "libavutil/imgutils.h" +#include "avcodec.h" +#include "pnm.h" -static inline int pnm_space(int c) +static inline int pnm_space(int c) { - return (c == ' ' || c == '\n' || c == '\r' || c == '\t'); + 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(;;) { + for (;;) { c = *sc->bytestream++; if (c == '#') { - do { + 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) @@ -57,36 +57,32 @@ static void pnm_get(PNMContext *sc, char *str, int buf_size) *s = '\0'; } -static int common_init(AVCodecContext *avctx){ - PNMContext *s = avctx->priv_data; - - avcodec_get_frame_defaults((AVFrame*)&s->picture); - avctx->coded_frame= (AVFrame*)&s->picture; - - return 0; -} - -static int pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ +int ff_pnm_decode_header(AVCodecContext *avctx, PNMContext * const s) +{ char buf1[32], tuple_type[32]; - int h, w, depth, maxval;; + 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; + s->type= buf1[1]-'0'; + if(buf1[0] != 'P') + return -1; + + if (s->type==1 || s->type==4) { + avctx->pix_fmt = AV_PIX_FMT_MONOWHITE; + } else if (s->type==2 || s->type==5) { + if (avctx->codec_id == AV_CODEC_ID_PGMYUV) + avctx->pix_fmt = AV_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; + avctx->pix_fmt = AV_PIX_FMT_GRAY8; + } else if (s->type==3 || s->type==6) { + avctx->pix_fmt = AV_PIX_FMT_RGB24; + } else if (s->type==7) { + w = -1; + h = -1; maxval = -1; - depth = -1; + depth = -1; tuple_type[0] = '\0'; - for(;;) { + for (;;) { pnm_get(s, buf1, sizeof(buf1)); if (!strcmp(buf1, "WIDTH")) { pnm_get(s, buf1, sizeof(buf1)); @@ -100,7 +96,9 @@ static int pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ } else if (!strcmp(buf1, "MAXVAL")) { pnm_get(s, buf1, sizeof(buf1)); maxval = strtol(buf1, NULL, 10); - } else if (!strcmp(buf1, "TUPLETYPE")) { + } else if (!strcmp(buf1, "TUPLTYPE") || + /* libavcodec used to write invalid files */ + !strcmp(buf1, "TUPLETYPE")) { pnm_get(s, tuple_type, sizeof(tuple_type)); } else if (!strcmp(buf1, "ENDHDR")) { break; @@ -109,20 +107,26 @@ static int pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ } } /* 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)) + if (w <= 0 || h <= 0 || maxval <= 0 || depth <= 0 || tuple_type[0] == '\0' || av_image_check_size(w, h, 0, avctx)) return -1; - - avctx->width = w; + + 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; + avctx->pix_fmt = AV_PIX_FMT_MONOWHITE; + else + avctx->pix_fmt = AV_PIX_FMT_GRAY8; } else if (depth == 3) { - avctx->pix_fmt = PIX_FMT_RGB24; + if (maxval < 256) { + avctx->pix_fmt = AV_PIX_FMT_RGB24; + } else { + av_log(avctx, AV_LOG_ERROR, "16-bit components are only supported for grayscale\n"); + avctx->pix_fmt = AV_PIX_FMT_NONE; + return -1; + } } else if (depth == 4) { - avctx->pix_fmt = PIX_FMT_RGBA32; + avctx->pix_fmt = AV_PIX_FMT_RGB32; } else { return -1; } @@ -136,14 +140,33 @@ static int pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ return -1; pnm_get(s, buf1, sizeof(buf1)); avctx->height = atoi(buf1); - if(avcodec_check_dimensions(avctx, avctx->width, avctx->height)) + if(av_image_check_size(avctx->width, avctx->height, 0, avctx)) return -1; - if (avctx->pix_fmt != PIX_FMT_MONOWHITE) { + if (avctx->pix_fmt != AV_PIX_FMT_MONOWHITE) { pnm_get(s, buf1, sizeof(buf1)); - } - + s->maxval = atoi(buf1); + if (s->maxval <= 0) { + av_log(avctx, AV_LOG_ERROR, "Invalid maxval: %d\n", s->maxval); + s->maxval = 255; + } + if (s->maxval >= 256) { + if (avctx->pix_fmt == AV_PIX_FMT_GRAY8) { + avctx->pix_fmt = AV_PIX_FMT_GRAY16BE; + if (s->maxval != 65535) + avctx->pix_fmt = AV_PIX_FMT_GRAY16; + } else if (avctx->pix_fmt == AV_PIX_FMT_RGB24) { + if (s->maxval > 255) + avctx->pix_fmt = AV_PIX_FMT_RGB48BE; + } else { + av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format\n"); + avctx->pix_fmt = AV_PIX_FMT_NONE; + return -1; + } + } + }else + s->maxval=1; /* more check if YUV420 */ - if (avctx->pix_fmt == PIX_FMT_YUV420P) { + if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) { if ((avctx->width & 1) != 0) return -1; h = (avctx->height * 2); @@ -155,440 +178,22 @@ static int pnm_decode_header(AVCodecContext *avctx, PNMContext * const s){ return 0; } -static int pnm_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - uint8_t *buf, int buf_size) +av_cold int ff_pnm_end(AVCodecContext *avctx) { - PNMContext * const s = avctx->priv_data; - AVFrame *picture = data; - AVFrame * const p= (AVFrame*)&s->picture; - int i, n, linesize, h; - unsigned char *ptr; - - 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->reference= 0; - if(avctx->get_buffer(avctx, p) < 0){ - av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); - return -1; - } - p->pict_type= FF_I_TYPE; - p->key_frame= 1; - - switch(avctx->pix_fmt) { - default: - return -1; - case PIX_FMT_RGB24: - n = avctx->width * 3; - goto do_read; - case PIX_FMT_GRAY8: - n = avctx->width; - goto do_read; - case PIX_FMT_MONOWHITE: - case PIX_FMT_MONOBLACK: - n = (avctx->width + 7) >> 3; - 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; - ptr += linesize; - } - break; - case PIX_FMT_YUV420P: - { - unsigned char *ptr1, *ptr2; - - 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; - ptr += linesize; - } - ptr1 = p->data[1]; - ptr2 = p->data[2]; - n >>= 1; - h = avctx->height >> 1; - for(i = 0; i < h; i++) { - memcpy(ptr1, s->bytestream, n); - s->bytestream += n; - memcpy(ptr2, s->bytestream, n); - s->bytestream += n; - ptr1 += p->linesize[1]; - ptr2 += p->linesize[2]; - } - } - break; - 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; - - for(j = 0;j < avctx->width; j++) { - r = *s->bytestream++; - g = *s->bytestream++; - b = *s->bytestream++; - a = *s->bytestream++; - ((uint32_t *)ptr)[j] = (a << 24) | (r << 16) | (g << 8) | b; - } - ptr += linesize; - } - break; - } - *picture= *(AVFrame*)&s->picture; - *data_size = sizeof(AVPicture); - - return s->bytestream - s->bytestream_start; -} - -static int pnm_encode_frame(AVCodecContext *avctx, unsigned char *outbuf, int buf_size, void *data){ - PNMContext *s = avctx->priv_data; - AVFrame *pict = data; - AVFrame * const p= (AVFrame*)&s->picture; - int i, h, h1, c, n, linesize; - uint8_t *ptr, *ptr1, *ptr2; - - if(buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 200){ - av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n"); - return -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; - - h = avctx->height; - h1 = h; - switch(avctx->pix_fmt) { - case PIX_FMT_MONOWHITE: - c = '4'; - n = (avctx->width + 7) >> 3; - break; - case PIX_FMT_GRAY8: - c = '5'; - n = avctx->width; - break; - case PIX_FMT_RGB24: - c = '6'; - n = avctx->width * 3; - break; - case PIX_FMT_YUV420P: - c = '5'; - n = avctx->width; - h1 = (h * 3) / 2; - break; - default: - return -1; - } - 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, - "%d\n", 255); - s->bytestream += strlen(s->bytestream); - } - - ptr = p->data[0]; - linesize = p->linesize[0]; - for(i=0;ibytestream, ptr, n); - s->bytestream += n; - ptr += linesize; - } - - if (avctx->pix_fmt == PIX_FMT_YUV420P) { - h >>= 1; - n >>= 1; - ptr1 = p->data[1]; - ptr2 = p->data[2]; - for(i=0;ibytestream, ptr1, n); - s->bytestream += n; - memcpy(s->bytestream, ptr2, n); - s->bytestream += n; - ptr1 += p->linesize[1]; - ptr2 += p->linesize[2]; - } - } - return s->bytestream - s->bytestream_start; -} - -static int pam_encode_frame(AVCodecContext *avctx, unsigned char *outbuf, int buf_size, void *data){ PNMContext *s = avctx->priv_data; - AVFrame *pict = data; - AVFrame * const p= (AVFrame*)&s->picture; - int i, h, w, n, linesize, depth, maxval; - const char *tuple_type; - uint8_t *ptr; - - if(buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 200){ - av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n"); - return -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; - - h = avctx->height; - w = avctx->width; - switch(avctx->pix_fmt) { - case PIX_FMT_MONOWHITE: - n = (w + 7) >> 3; - depth = 1; - maxval = 1; - tuple_type = "BLACKANDWHITE"; - break; - case PIX_FMT_GRAY8: - n = w; - depth = 1; - maxval = 255; - tuple_type = "GRAYSCALE"; - break; - case PIX_FMT_RGB24: - n = w * 3; - depth = 3; - maxval = 255; - tuple_type = "RGB"; - break; - case PIX_FMT_RGBA32: - n = w * 4; - depth = 4; - maxval = 255; - tuple_type = "RGB_ALPHA"; - break; - default: - return -1; - } - 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; - - for(i=0;ibytestream++ = v >> 16; - *s->bytestream++ = v >> 8; - *s->bytestream++ = v; - *s->bytestream++ = v >> 24; - } - ptr += linesize; - } - } else { - for(i=0;ibytestream, ptr, n); - s->bytestream += n; - ptr += linesize; - } - } - return s->bytestream - s->bytestream_start; -} -#if 0 -static int pnm_probe(AVProbeData *pd) -{ - const char *p = pd->buf; - if (pd->buf_size >= 8 && - p[0] == 'P' && - p[1] >= '4' && p[1] <= '6' && - pnm_space(p[2]) ) - return AVPROBE_SCORE_MAX - 1; /* to permit pgmyuv probe */ - else - return 0; -} + if (s->picture.data[0]) + avctx->release_buffer(avctx, &s->picture); -static int pgmyuv_probe(AVProbeData *pd) -{ - if (match_ext(pd->filename, "pgmyuv")) - return AVPROBE_SCORE_MAX; - else - return 0; + return 0; } -static int pam_probe(AVProbeData *pd) +av_cold int ff_pnm_init(AVCodecContext *avctx) { - const char *p = pd->buf; - if (pd->buf_size >= 8 && - p[0] == 'P' && - p[1] == '7' && - p[2] == '\n') - return AVPROBE_SCORE_MAX; - else - return 0; -} -#endif + PNMContext *s = avctx->priv_data; -static int pnm_parse(AVCodecParserContext *s, - AVCodecContext *avctx, - uint8_t **poutbuf, int *poutbuf_size, - const uint8_t *buf, int buf_size) -{ - ParseContext *pc = s->priv_data; - PNMContext pnmctx; - int next; + avcodec_get_frame_defaults(&s->picture); + avctx->coded_frame = &s->picture; - for(; pc->overread>0; pc->overread--){ - pc->buffer[pc->index++]= pc->buffer[pc->overread_index++]; - } -retry: - if(pc->index){ - pnmctx.bytestream_start= - pnmctx.bytestream= pc->buffer; - pnmctx.bytestream_end= pc->buffer + pc->index; - }else{ - pnmctx.bytestream_start= - 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){ - if(pc->index){ - pc->index=0; - }else{ - buf++; - buf_size--; - } - goto retry; - } -#if 0 - if(pc->index && pc->index*2 + FF_INPUT_BUFFER_PADDING_SIZE < pc->buffer_size && buf_size > pc->index){ - memcpy(pc->buffer + pc->index, buf, pc->index); - pc->index += pc->index; - buf += pc->index; - buf_size -= pc->index; - goto retry; - } -#endif - next= END_NOT_FOUND; - }else{ - 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; - return buf_size; - } - *poutbuf = (uint8_t *)buf; - *poutbuf_size = buf_size; - return next; + return 0; } - -AVCodecParser pnm_parser = { - { CODEC_ID_PGM, CODEC_ID_PGMYUV, CODEC_ID_PPM, CODEC_ID_PBM, CODEC_ID_PAM}, - sizeof(ParseContext), - NULL, - pnm_parse, - ff_parse_close, -}; - -#ifdef CONFIG_PGM_ENCODER -AVCodec pgm_encoder = { - "pgm", - CODEC_TYPE_VIDEO, - CODEC_ID_PGM, - sizeof(PNMContext), - common_init, - pnm_encode_frame, - NULL, //encode_end, - pnm_decode_frame, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_GRAY8, -1}, -}; -#endif // CONFIG_PGM_ENCODER - -#ifdef CONFIG_PGMYUV_ENCODER -AVCodec pgmyuv_encoder = { - "pgmyuv", - CODEC_TYPE_VIDEO, - CODEC_ID_PGMYUV, - sizeof(PNMContext), - common_init, - pnm_encode_frame, - NULL, //encode_end, - pnm_decode_frame, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, -1}, -}; -#endif // CONFIG_PGMYUV_ENCODER - -#ifdef CONFIG_PPM_ENCODER -AVCodec ppm_encoder = { - "ppm", - CODEC_TYPE_VIDEO, - CODEC_ID_PPM, - sizeof(PNMContext), - common_init, - pnm_encode_frame, - NULL, //encode_end, - pnm_decode_frame, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, -1}, -}; -#endif // CONFIG_PPM_ENCODER - -#ifdef CONFIG_PBM_ENCODER -AVCodec pbm_encoder = { - "pbm", - CODEC_TYPE_VIDEO, - CODEC_ID_PBM, - sizeof(PNMContext), - common_init, - pnm_encode_frame, - NULL, //encode_end, - pnm_decode_frame, - .pix_fmts= (enum PixelFormat[]){PIX_FMT_MONOWHITE, -1}, -}; -#endif // CONFIG_PBM_ENCODER - -#ifdef CONFIG_PAM_ENCODER -AVCodec pam_encoder = { - "pam", - CODEC_TYPE_VIDEO, - CODEC_ID_PAM, - sizeof(PNMContext), - common_init, - 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}, -}; -#endif // CONFIG_PAM_ENCODER