From 9ac2e7971b71d5156331b7db1743ee9563e0f275 Mon Sep 17 00:00:00 2001 From: Aurelien Jacobs Date: Fri, 11 May 2007 09:28:07 +0000 Subject: rename pnm.c to pnmenc.c and pnm_common.c to pnm.c Originally committed as revision 8996 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/pnmenc.c | 426 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 426 insertions(+) create mode 100644 libavcodec/pnmenc.c (limited to 'libavcodec/pnmenc.c') diff --git a/libavcodec/pnmenc.c b/libavcodec/pnmenc.c new file mode 100644 index 0000000000..46f7e6e98a --- /dev/null +++ b/libavcodec/pnmenc.c @@ -0,0 +1,426 @@ +/* + * 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 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_frame(AVCodecContext *avctx, + void *data, int *data_size, + uint8_t *buf, int buf_size) +{ + PNMContext * const s = avctx->priv_data; + AVFrame *picture = data; + AVFrame * const p= (AVFrame*)&s->picture; + int i, n, linesize, h, upgrade = 0; + unsigned char *ptr; + + s->bytestream_start= + s->bytestream= buf; + s->bytestream_end= buf + buf_size; + + if(ff_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; + if (s->maxval < 255) + upgrade = 1; + goto do_read; + case PIX_FMT_GRAY16BE: + case PIX_FMT_GRAY16LE: + n = avctx->width * 2; + if (s->maxval < 65535) + upgrade = 2; + 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++) { + if (!upgrade) + memcpy(ptr, s->bytestream, n); + else if (upgrade == 1) { + unsigned int j, f = (255*128 + s->maxval/2) / s->maxval; + for (j=0; jbytestream[j] * f + 64) >> 7; + } else if (upgrade == 2) { + unsigned int j, v, f = (65535*32768 + s->maxval/2) / s->maxval; + for (j=0; jbytestream)[j]); + ((uint16_t *)ptr)[j] = (v * f + 16384) >> 15; + } + } + 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_RGB32: + 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_GRAY16BE: + c = '5'; + n = avctx->width * 2; + 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", (avctx->pix_fmt != PIX_FMT_GRAY16BE) ? 255 : 65535); + 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_RGB32: + 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_RGB32) { + 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; +} + +static int pgmyuv_probe(AVProbeData *pd) +{ + if (match_ext(pd->filename, "pgmyuv")) + return AVPROBE_SCORE_MAX; + else + return 0; +} + +static int pam_probe(AVProbeData *pd) +{ + 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 + + +#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, PIX_FMT_GRAY16BE, -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_RGB32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, -1}, +}; +#endif // CONFIG_PAM_ENCODER -- cgit v1.2.3