2 * Targa (.tga) image encoder
3 * Copyright (c) 2007 Bobby Bingham
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
24 static int targa_encode_frame(AVCodecContext *avctx,
25 unsigned char *outbuf,
26 int buf_size, void *data){
31 if(avctx->width > 0xffff || avctx->height > 0xffff) {
32 av_log(avctx, AV_LOG_ERROR, "image dimensions too large\n");
35 if(buf_size < avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height) + 45) {
36 av_log(avctx, AV_LOG_ERROR, "encoded frame too large\n");
40 p->pict_type= FF_I_TYPE;
43 /* zero out the header and only set applicable fields */
44 memset(outbuf, 0, 11);
45 AV_WL16(outbuf+12, avctx->width);
46 AV_WL16(outbuf+14, avctx->height);
47 outbuf[17] = 0x20; /* origin is top-left. no alpha */
49 /* TODO: support alpha channel and other bit-depths. and RLE? */
50 switch(avctx->pix_fmt) {
52 outbuf[2] = 3; /* uncompressed grayscale image */
53 outbuf[16] = 8; /* bpp */
57 outbuf[2] = 2; /* uncompressed true-color image */
58 outbuf[16] = 24; /* bpp */
65 out = outbuf + 18; /* skip past the header we just output */
67 linesize = p->linesize[0];
69 for(i=0; i < avctx->height; i++) {
75 /* The standard recommends including this section, even if we don't use
76 * any of the features it affords. TODO: take advantage of the pixel
77 * aspect ratio and encoder ID fields available? */
78 memcpy(out, "\0\0\0\0\0\0\0\0TRUEVISION-XFILE.", 26);
80 return out + 26 - outbuf;
83 static int targa_encode_init(AVCodecContext *avctx)
88 AVCodec targa_encoder = {
90 .type = CODEC_TYPE_VIDEO,
93 .init = targa_encode_init,
94 .encode = targa_encode_frame,
95 .pix_fmts= (enum PixelFormat[]){PIX_FMT_BGR24, PIX_FMT_GRAY8, -1},