3 * Copyright (C) 2005 The FFmpeg project
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 * Autodesk RLE Video Decoder by Konstantin Shishkov
35 typedef struct AascContext {
36 AVCodecContext *avctx;
41 static av_cold int aasc_decode_init(AVCodecContext *avctx)
43 AascContext *s = avctx->priv_data;
47 avctx->pix_fmt = AV_PIX_FMT_BGR24;
49 s->frame = av_frame_alloc();
51 return AVERROR(ENOMEM);
56 static int aasc_decode_frame(AVCodecContext *avctx,
57 void *data, int *got_frame,
60 const uint8_t *buf = avpkt->data;
61 int buf_size = avpkt->size;
62 AascContext *s = avctx->priv_data;
63 int compr, i, stride, ret;
66 return AVERROR_INVALIDDATA;
68 if ((ret = ff_reget_buffer(avctx, s->frame)) < 0) {
69 av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
78 stride = (avctx->width * 3 + 3) & ~3;
79 if (buf_size < stride * avctx->height)
80 return AVERROR_INVALIDDATA;
81 for (i = avctx->height - 1; i >= 0; i--) {
82 memcpy(s->frame->data[0] + i * s->frame->linesize[0], buf, avctx->width * 3);
87 bytestream2_init(&s->gb, buf, buf_size);
88 ff_msrle_decode(avctx, s->frame, 8, &s->gb);
91 av_log(avctx, AV_LOG_ERROR, "Unknown compression type %d\n", compr);
92 return AVERROR_INVALIDDATA;
96 if ((ret = av_frame_ref(data, s->frame)) < 0)
99 /* report that the buffer was completely consumed */
103 static av_cold int aasc_decode_end(AVCodecContext *avctx)
105 AascContext *s = avctx->priv_data;
107 av_frame_free(&s->frame);
112 AVCodec ff_aasc_decoder = {
114 .long_name = NULL_IF_CONFIG_SMALL("Autodesk RLE"),
115 .type = AVMEDIA_TYPE_VIDEO,
116 .id = AV_CODEC_ID_AASC,
117 .priv_data_size = sizeof(AascContext),
118 .init = aasc_decode_init,
119 .close = aasc_decode_end,
120 .decode = aasc_decode_frame,
121 .capabilities = AV_CODEC_CAP_DR1,
122 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE,