2 * QuickDraw (qdrw) codec
3 * Copyright (c) 2004 Konstantin Shishkov
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
25 * Apple QuickDraw codec.
29 #include "mpegvideo.h"
31 typedef struct QdrawContext{
32 AVCodecContext *avctx;
36 static int decode_frame(AVCodecContext *avctx,
37 void *data, int *data_size,
38 uint8_t *buf, int buf_size)
40 QdrawContext * const a = avctx->priv_data;
41 AVFrame * const p= (AVFrame*)&a->pic;
49 avctx->release_buffer(avctx, p);
52 if(avctx->get_buffer(avctx, p) < 0){
53 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
59 outdata = a->pic.data[0];
61 buf += 0x68; /* jump to palette */
62 colors = AV_RB32(buf);
65 if(colors < 0 || colors > 256) {
66 av_log(avctx, AV_LOG_ERROR, "Error color count - %i(0x%X)\n", colors, colors);
70 pal = (uint32_t*)p->data[1];
71 for (i = 0; i <= colors; i++) {
73 idx = AV_RB16(buf); /* color index */
77 av_log(avctx, AV_LOG_ERROR, "Palette index out of range: %u\n", idx);
87 pal[idx] = (r << 16) | (g << 8) | b;
89 p->palette_has_changed = 1;
91 buf += 18; /* skip unneeded data */
92 for (i = 0; i < avctx->height; i++) {
93 int size, left, code, pix;
100 size = AV_RB16(buf); /* size of packed line */
106 if (code & 0x80 ) { /* run */
108 if ((out + (257 - code)) > (outdata + a->pic.linesize[0]))
110 memset(out, pix, 257 - code);
115 if ((out + code) > (outdata + a->pic.linesize[0]))
117 memcpy(out, buf, code + 1);
125 outdata += a->pic.linesize[0];
128 *data_size = sizeof(AVFrame);
129 *(AVFrame*)data = a->pic;
134 static int decode_init(AVCodecContext *avctx){
135 // QdrawContext * const a = avctx->priv_data;
137 if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
141 avctx->pix_fmt= PIX_FMT_PAL8;
146 AVCodec qdraw_decoder = {
150 sizeof(QdrawContext),