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.
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)
48 p->pict_type = AV_PICTURE_TYPE_I;
53 if (buf_end - buf < 0x68 + 4)
54 return AVERROR_INVALIDDATA;
55 buf += 0x68; /* jump to palette */
56 colors = AV_RB32(buf);
59 if (colors < 0 || colors > 256) {
60 av_log(avctx, AV_LOG_ERROR, "Error color count - %i(0x%X)\n", colors, colors);
61 return AVERROR_INVALIDDATA;
63 if (buf_end - buf < (colors + 1) * 8)
64 return AVERROR_INVALIDDATA;
66 pal = (uint32_t*)p->data[1];
67 for (i = 0; i <= colors; i++) {
69 idx = AV_RB16(buf); /* color index */
73 av_log(avctx, AV_LOG_ERROR, "Palette index out of range: %u\n", idx);
83 pal[idx] = 0xFFU << 24 | r << 16 | g << 8 | b;
85 p->palette_has_changed = 1;
87 if (buf_end - buf < 18)
88 return AVERROR_INVALIDDATA;
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 */
100 if (buf_end - buf < size)
101 return AVERROR_INVALIDDATA;
107 if (code & 0x80 ) { /* run */
109 if ((out + (257 - code)) > (outdata + p->linesize[0]))
111 memset(out, pix, 257 - code);
116 if ((out + code) > (outdata + p->linesize[0]))
118 if (buf_end - buf < code + 1)
119 return AVERROR_INVALIDDATA;
120 memcpy(out, buf, code + 1);
128 outdata += p->linesize[0];
136 static av_cold int decode_init(AVCodecContext *avctx)
138 avctx->pix_fmt= AV_PIX_FMT_PAL8;
143 AVCodec ff_qdraw_decoder = {
145 .long_name = NULL_IF_CONFIG_SMALL("Apple QuickDraw"),
146 .type = AVMEDIA_TYPE_VIDEO,
147 .id = AV_CODEC_ID_QDRAW,
149 .decode = decode_frame,
150 .capabilities = CODEC_CAP_DR1,