| /* |
| * 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 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 = AV_PICTURE_TYPE_I; |
| 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_RGB48BE: |
| c = '6'; |
| n = avctx->width * 6; |
| 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 && avctx->pix_fmt != PIX_FMT_RGB48BE) ? 255 : 65535); |
| s->bytestream += strlen(s->bytestream); |
| } |
| |
| ptr = p->data[0]; |
| linesize = p->linesize[0]; |
| for (i = 0; i < h; i++) { |
| memcpy(s->bytestream, 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; i < h; i++) { |
| memcpy(s->bytestream, 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; |
| } |
| |
| |
| #if CONFIG_PGM_ENCODER |
| AVCodec ff_pgm_encoder = { |
| .name = "pgm", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_PGM, |
| .priv_data_size = sizeof(PNMContext), |
| .init = ff_pnm_init, |
| .encode = pnm_encode_frame, |
| .pix_fmts = (const enum PixelFormat[]){PIX_FMT_GRAY8, PIX_FMT_GRAY16BE, PIX_FMT_NONE}, |
| .long_name = NULL_IF_CONFIG_SMALL("PGM (Portable GrayMap) image"), |
| }; |
| #endif |
| |
| #if CONFIG_PGMYUV_ENCODER |
| AVCodec ff_pgmyuv_encoder = { |
| .name = "pgmyuv", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_PGMYUV, |
| .priv_data_size = sizeof(PNMContext), |
| .init = ff_pnm_init, |
| .encode = pnm_encode_frame, |
| .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_NONE}, |
| .long_name = NULL_IF_CONFIG_SMALL("PGMYUV (Portable GrayMap YUV) image"), |
| }; |
| #endif |
| |
| #if CONFIG_PPM_ENCODER |
| AVCodec ff_ppm_encoder = { |
| .name = "ppm", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_PPM, |
| .priv_data_size = sizeof(PNMContext), |
| .init = ff_pnm_init, |
| .encode = pnm_encode_frame, |
| .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB48BE, PIX_FMT_NONE}, |
| .long_name = NULL_IF_CONFIG_SMALL("PPM (Portable PixelMap) image"), |
| }; |
| #endif |
| |
| #if CONFIG_PBM_ENCODER |
| AVCodec ff_pbm_encoder = { |
| .name = "pbm", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .id = CODEC_ID_PBM, |
| .priv_data_size = sizeof(PNMContext), |
| .init = ff_pnm_init, |
| .encode = pnm_encode_frame, |
| .pix_fmts = (const enum PixelFormat[]){PIX_FMT_MONOWHITE, PIX_FMT_NONE}, |
| .long_name = NULL_IF_CONFIG_SMALL("PBM (Portable BitMap) image"), |
| }; |
| #endif |