2 * QuickDraw (qdrw) codec
3 * Copyright (c) 2004 Konstantin Shishkov
4 * Copyright (c) 2015 Vittorio Giovara
6 * This file is part of Libav.
8 * Libav is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * Libav is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 * Apple QuickDraw codec.
26 * https://developer.apple.com/legacy/library/documentation/mac/QuickDraw/QuickDraw-461.html
29 #include "libavutil/common.h"
30 #include "libavutil/intreadwrite.h"
32 #include "bytestream.h"
35 enum QuickdrawOpcodes {
36 PACKBITSRECT = 0x0098,
44 static int parse_palette(AVCodecContext *avctx, GetByteContext *gbc,
45 uint32_t *pal, int colors)
49 for (i = 0; i <= colors; i++) {
51 unsigned int idx = bytestream2_get_be16(gbc); /* color index */
53 av_log(avctx, AV_LOG_WARNING,
54 "Palette index out of range: %u\n", idx);
55 bytestream2_skip(gbc, 6);
58 r = bytestream2_get_byte(gbc);
59 bytestream2_skip(gbc, 1);
60 g = bytestream2_get_byte(gbc);
61 bytestream2_skip(gbc, 1);
62 b = bytestream2_get_byte(gbc);
63 bytestream2_skip(gbc, 1);
64 pal[idx] = (0xFFU << 24) | (r << 16) | (g << 8) | b;
69 static int decode_rle(AVCodecContext *avctx, AVFrame *p, GetByteContext *gbc,
73 int offset = avctx->width * step;
74 uint8_t *outdata = p->data[0];
76 for (i = 0; i < avctx->height; i++) {
77 int size, left, code, pix;
78 uint8_t *out = outdata;
81 /* size of packed line */
82 size = left = bytestream2_get_be16(gbc);
83 if (bytestream2_get_bytes_left(gbc) < size)
84 return AVERROR_INVALIDDATA;
88 code = bytestream2_get_byte(gbc);
89 if (code & 0x80 ) { /* run */
90 pix = bytestream2_get_byte(gbc);
91 for (j = 0; j < 257 - code; j++) {
101 for (j = 0; j < code + 1; j++) {
102 out[pos] = bytestream2_get_byte(gbc);
112 outdata += p->linesize[0];
117 static int decode_frame(AVCodecContext *avctx,
118 void *data, int *got_frame,
121 AVFrame * const p = data;
126 bytestream2_init(&gbc, avpkt->data, avpkt->size);
128 /* smallest PICT header */
129 if (bytestream2_get_bytes_left(&gbc) < 40) {
130 av_log(avctx, AV_LOG_ERROR, "Frame is too small %d\n",
131 bytestream2_get_bytes_left(&gbc));
132 return AVERROR_INVALIDDATA;
135 bytestream2_skip(&gbc, 6);
136 h = bytestream2_get_be16(&gbc);
137 w = bytestream2_get_be16(&gbc);
139 ret = ff_set_dimensions(avctx, w, h);
143 /* version 1 is identified by 0x1101
144 * it uses byte-aligned opcodes rather than word-aligned */
145 if (bytestream2_get_be32(&gbc) != 0x001102FF) {
146 avpriv_request_sample(avctx, "QuickDraw version 1");
147 return AVERROR_PATCHWELCOME;
150 bytestream2_skip(&gbc, 26);
152 while (bytestream2_get_bytes_left(&gbc) >= 4) {
154 int rowbytes, pack_type;
155 int opcode = bytestream2_get_be16(&gbc);
160 av_log(avctx, AV_LOG_DEBUG, "Parsing Packbit opcode\n");
162 bytestream2_skip(&gbc, 30);
163 bppcnt = bytestream2_get_be16(&gbc); /* cmpCount */
164 bpp = bytestream2_get_be16(&gbc); /* cmpSize */
166 av_log(avctx, AV_LOG_DEBUG, "bppcount %d bpp %d\n", bppcnt, bpp);
167 if (bppcnt == 1 && bpp == 8) {
168 avctx->pix_fmt = AV_PIX_FMT_PAL8;
170 av_log(avctx, AV_LOG_ERROR,
171 "Invalid pixel format (bppcnt %d bpp %d) in Packbit\n",
173 return AVERROR_INVALIDDATA;
176 /* jump to palette */
177 bytestream2_skip(&gbc, 18);
178 colors = bytestream2_get_be16(&gbc);
180 if (colors < 0 || colors > 256) {
181 av_log(avctx, AV_LOG_ERROR,
182 "Error color count - %i(0x%X)\n", colors, colors);
183 return AVERROR_INVALIDDATA;
185 if (bytestream2_get_bytes_left(&gbc) < (colors + 1) * 8) {
186 av_log(avctx, AV_LOG_ERROR, "Palette is too small %d\n",
187 bytestream2_get_bytes_left(&gbc));
188 return AVERROR_INVALIDDATA;
190 if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
191 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
195 parse_palette(avctx, &gbc, (uint32_t *)p->data[1], colors);
196 p->palette_has_changed = 1;
198 /* jump to image data */
199 bytestream2_skip(&gbc, 18);
201 if (opcode == PACKBITSRGN) {
202 bytestream2_skip(&gbc, 2 + 8); /* size + rect */
203 avpriv_report_missing_feature(avctx, "Packbit mask region");
206 ret = decode_rle(avctx, p, &gbc, bppcnt);
213 av_log(avctx, AV_LOG_DEBUG, "Parsing Directbit opcode\n");
215 bytestream2_skip(&gbc, 4);
216 rowbytes = bytestream2_get_be16(&gbc) & 0x3FFF;
217 if (rowbytes <= 250) {
218 avpriv_report_missing_feature(avctx, "Short rowbytes");
219 return AVERROR_PATCHWELCOME;
222 bytestream2_skip(&gbc, 10);
223 pack_type = bytestream2_get_be16(&gbc);
225 bytestream2_skip(&gbc, 16);
226 bppcnt = bytestream2_get_be16(&gbc); /* cmpCount */
227 bpp = bytestream2_get_be16(&gbc); /* cmpSize */
229 av_log(avctx, AV_LOG_DEBUG, "bppcount %d bpp %d\n", bppcnt, bpp);
230 if (bppcnt == 3 && bpp == 8) {
231 avctx->pix_fmt = AV_PIX_FMT_RGB24;
232 } else if (bppcnt == 4 && bpp == 8) {
233 avctx->pix_fmt = AV_PIX_FMT_ARGB;
235 av_log(avctx, AV_LOG_ERROR,
236 "Invalid pixel format (bppcnt %d bpp %d) in Directbit\n",
238 return AVERROR_INVALIDDATA;
241 /* set packing when default is selected */
245 if (pack_type != 3 && pack_type != 4) {
246 avpriv_request_sample(avctx, "Pack type %d", pack_type);
247 return AVERROR_PATCHWELCOME;
249 if ((ret = ff_get_buffer(avctx, p, 0)) < 0) {
250 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
255 bytestream2_skip(&gbc, 30);
257 if (opcode == DIRECTBITSRGN) {
258 bytestream2_skip(&gbc, 2 + 8); /* size + rect */
259 avpriv_report_missing_feature(avctx, "DirectBit mask region");
262 ret = decode_rle(avctx, p, &gbc, bppcnt);
268 av_log(avctx, AV_LOG_TRACE, "Unknown 0x%04X opcode\n", opcode);
271 /* exit the loop when a known pixel block has been found */
275 /* re-align to a word */
276 bytestream2_skip(&gbc, bytestream2_get_bytes_left(&gbc) % 2);
278 eop = bytestream2_get_be16(&gbc);
279 trail = bytestream2_get_bytes_left(&gbc);
281 av_log(avctx, AV_LOG_WARNING,
282 "Missing end of picture opcode (found 0x%04X)\n", eop);
284 av_log(avctx, AV_LOG_WARNING, "Got %d trailing bytes\n", trail);
290 p->pict_type = AV_PICTURE_TYPE_I;
295 av_log(avctx, AV_LOG_ERROR, "Frame contained no usable data\n");
297 return AVERROR_INVALIDDATA;
301 AVCodec ff_qdraw_decoder = {
303 .long_name = NULL_IF_CONFIG_SMALL("Apple QuickDraw"),
304 .type = AVMEDIA_TYPE_VIDEO,
305 .id = AV_CODEC_ID_QDRAW,
306 .decode = decode_frame,
307 .capabilities = CODEC_CAP_DR1,