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_MONOBLACK:
57 tuple_type = "BLACKANDWHITE";
63 tuple_type = "GRAYSCALE";
65 case PIX_FMT_GRAY16BE:
69 tuple_type = "GRAYSCALE";
75 tuple_type = "GRAYSCALE_ALPHA";
87 tuple_type = "RGB_ALPHA";
98 snprintf(s->bytestream, s->bytestream_end - s->bytestream,
99 "P7\nWIDTH %d\nHEIGHT %d\nDEPTH %d\nMAXVAL %d\nTUPLTYPE %s\nENDHDR\n",
100 w, h, depth, maxval, tuple_type);
101 s->bytestream += strlen(s->bytestream);
104 linesize = p->linesize[0];
106 if (avctx->pix_fmt == PIX_FMT_RGB32) {
110 for (i = 0; i < h; i++) {
111 for (j = 0; j < w; j++) {
112 v = ((uint32_t *)ptr)[j];
113 bytestream_put_be24(&s->bytestream, v);
114 *s->bytestream++ = v >> 24;
118 } else if (avctx->pix_fmt == PIX_FMT_MONOBLACK){
120 for (i = 0; i < h; i++) {
121 for (j = 0; j < w; j++)
122 *s->bytestream++ = ptr[j >> 3] >> (7 - j & 7) & 1;
126 for (i = 0; i < h; i++) {
127 memcpy(s->bytestream, ptr, n);
132 return s->bytestream - s->bytestream_start;
136 AVCodec ff_pam_encoder = {
138 .type = AVMEDIA_TYPE_VIDEO,
140 .priv_data_size = sizeof(PNMContext),
142 .encode = pam_encode_frame,
143 .pix_fmts = (const enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGB32, PIX_FMT_RGB48BE, PIX_FMT_GRAY8, PIX_FMT_GRAY8A, PIX_FMT_GRAY16BE, PIX_FMT_MONOBLACK, PIX_FMT_NONE},
144 .long_name = NULL_IF_CONFIG_SMALL("PAM (Portable AnyMap) image"),