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
24 * Apple QuickDraw codec.
29 typedef struct QdrawContext{
30 AVCodecContext *avctx;
34 static int decode_frame(AVCodecContext *avctx,
35 void *data, int *data_size,
36 const uint8_t *buf, int buf_size)
38 QdrawContext * const a = avctx->priv_data;
39 AVFrame * const p= (AVFrame*)&a->pic;
47 avctx->release_buffer(avctx, p);
50 if(avctx->get_buffer(avctx, p) < 0){
51 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
54 p->pict_type= FF_I_TYPE;
57 outdata = a->pic.data[0];
59 buf += 0x68; /* jump to palette */
60 colors = AV_RB32(buf);
63 if(colors < 0 || colors > 256) {
64 av_log(avctx, AV_LOG_ERROR, "Error color count - %i(0x%X)\n", colors, colors);
68 pal = (uint32_t*)p->data[1];
69 for (i = 0; i <= colors; i++) {
71 idx = AV_RB16(buf); /* color index */
75 av_log(avctx, AV_LOG_ERROR, "Palette index out of range: %u\n", idx);
85 pal[idx] = (r << 16) | (g << 8) | b;
87 p->palette_has_changed = 1;
89 buf += 18; /* skip unneeded data */
90 for (i = 0; i < avctx->height; i++) {
91 int size, left, code, pix;
98 size = AV_RB16(buf); /* size of packed line */
104 if (code & 0x80 ) { /* run */
106 if ((out + (257 - code)) > (outdata + a->pic.linesize[0]))
108 memset(out, pix, 257 - code);
113 if ((out + code) > (outdata + a->pic.linesize[0]))
115 memcpy(out, buf, code + 1);
123 outdata += a->pic.linesize[0];
126 *data_size = sizeof(AVFrame);
127 *(AVFrame*)data = a->pic;
132 static av_cold int decode_init(AVCodecContext *avctx){
133 // QdrawContext * const a = avctx->priv_data;
135 if (avcodec_check_dimensions(avctx, avctx->width, avctx->height) < 0) {
139 avctx->pix_fmt= PIX_FMT_PAL8;
144 AVCodec qdraw_decoder = {
148 sizeof(QdrawContext),
154 .long_name = NULL_IF_CONFIG_SMALL("Apple QuickDraw"),