2 * QuickDraw (qdrw) codec
3 * Copyright (c) 2004 Konstantin Shishkov
5 * This file is part of Libav.
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 * Apple QuickDraw codec.
27 #include "libavutil/common.h"
28 #include "libavutil/intreadwrite.h"
32 static int decode_frame(AVCodecContext *avctx,
33 void *data, int *got_frame,
36 const uint8_t *buf = avpkt->data;
37 const uint8_t *buf_end = avpkt->data + avpkt->size;
38 int buf_size = avpkt->size;
39 AVFrame * const p = data;
46 if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
47 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
50 p->pict_type = AV_PICTURE_TYPE_I;
55 if (buf_end - buf < 0x68 + 4)
56 return AVERROR_INVALIDDATA;
57 buf += 0x68; /* jump to palette */
58 colors = AV_RB32(buf);
61 if (colors < 0 || colors > 256) {
62 av_log(avctx, AV_LOG_ERROR, "Error color count - %i(0x%X)\n", colors, colors);
63 return AVERROR_INVALIDDATA;
65 if (buf_end - buf < (colors + 1) * 8)
66 return AVERROR_INVALIDDATA;
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 if (buf_end - buf < 18)
90 return AVERROR_INVALIDDATA;
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 */
102 if (buf_end - buf < size)
103 return AVERROR_INVALIDDATA;
109 if (code & 0x80 ) { /* run */
111 if ((out + (257 - code)) > (outdata + p->linesize[0]))
113 memset(out, pix, 257 - code);
118 if ((out + code) > (outdata + p->linesize[0]))
120 if (buf_end - buf < code + 1)
121 return AVERROR_INVALIDDATA;
122 memcpy(out, buf, code + 1);
130 outdata += p->linesize[0];
138 static av_cold int decode_init(AVCodecContext *avctx)
140 avctx->pix_fmt= AV_PIX_FMT_PAL8;
145 AVCodec ff_qdraw_decoder = {
147 .type = AVMEDIA_TYPE_VIDEO,
148 .id = AV_CODEC_ID_QDRAW,
150 .decode = decode_frame,
151 .capabilities = CODEC_CAP_DR1,
152 .long_name = NULL_IF_CONFIG_SMALL("Apple QuickDraw"),