3 * Copyright (c) 2002, 2003 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "bytestream.h"
27 static int pam_encode_frame(AVCodecContext *avctx, unsigned char *outbuf,
28 int buf_size, void *data)
30 PNMContext *s = avctx->priv_data;
32 AVFrame * const p = (AVFrame*)&s->picture;
33 int i, h, w, n, linesize, depth, maxval;
34 const char *tuple_type;
37 if (buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 200) {
38 av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
43 p->pict_type = AV_PICTURE_TYPE_I;
47 s->bytestream = outbuf;
48 s->bytestream_end = outbuf+buf_size;
52 switch (avctx->pix_fmt) {
53 case PIX_FMT_MONOWHITE:
57 tuple_type = "BLACKANDWHITE";
63 tuple_type = "GRAYSCALE";
75 tuple_type = "RGB_ALPHA";
80 snprintf(s->bytestream, s->bytestream_end - s->bytestream,
81 "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLETYPE %s\nENDHDR\n",
82 w, h, depth, maxval, tuple_type);
83 s->bytestream += strlen(s->bytestream);
86 linesize = p->linesize[0];
88 if (avctx->pix_fmt == PIX_FMT_RGB32) {
92 for (i = 0; i < h; i++) {
93 for (j = 0; j < w; j++) {
94 v = ((uint32_t *)ptr)[j];
95 bytestream_put_be24(&s->bytestream, v);
96 *s->bytestream++ = v >> 24;
101 for (i = 0; i < h; i++) {
102 memcpy(s->bytestream, ptr, n);
107 return s->bytestream - s->bytestream_start;
111 AVCodec ff_pam_encoder = {
118 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_GRAY8, PIX_FMT_MONOWHITE, PIX_FMT_NONE},
119 .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),