2005-11-30 01:40:50 +00:00
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/*
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2007-01-27 07:39:16 +00:00
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* BMP image format decoder
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2005-11-30 01:40:50 +00:00
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* Copyright (c) 2005 Mans Rullgard
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*
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2006-10-07 15:30:46 +00:00
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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2005-11-30 01:40:50 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2005-11-30 01:40:50 +00:00
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*
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2006-10-07 15:30:46 +00:00
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* FFmpeg is distributed in the hope that it will be useful,
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2005-11-30 01:40:50 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2006-10-07 15:30:46 +00:00
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* License along with FFmpeg; if not, write to the Free Software
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2006-01-12 22:43:26 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2005-11-30 01:40:50 +00:00
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*/
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2014-03-13 11:13:33 +00:00
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#include <inttypes.h>
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2005-11-30 01:40:50 +00:00
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#include "avcodec.h"
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2007-01-31 00:34:56 +00:00
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#include "bytestream.h"
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2007-01-27 07:39:16 +00:00
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#include "bmp.h"
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2012-11-10 12:22:56 +00:00
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#include "internal.h"
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2008-09-23 08:45:12 +00:00
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#include "msrledec.h"
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2005-11-30 01:40:50 +00:00
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2005-12-17 18:14:38 +00:00
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static int bmp_decode_frame(AVCodecContext *avctx,
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2012-11-13 18:35:22 +00:00
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void *data, int *got_frame,
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2009-04-07 15:59:50 +00:00
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AVPacket *avpkt)
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2005-11-30 01:40:50 +00:00
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{
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2009-04-07 15:59:50 +00:00
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const uint8_t *buf = avpkt->data;
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2012-11-15 08:23:55 +00:00
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int buf_size = avpkt->size;
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2012-11-21 20:34:46 +00:00
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AVFrame *p = data;
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2005-11-30 01:40:50 +00:00
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unsigned int fsize, hsize;
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int width, height;
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unsigned int depth;
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2007-01-24 10:41:03 +00:00
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BiCompression comp;
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2005-11-30 01:40:50 +00:00
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unsigned int ihsize;
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2012-11-15 08:26:36 +00:00
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int i, j, n, linesize, ret;
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2013-02-23 13:03:18 +00:00
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uint32_t rgb[3] = {0};
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2012-01-12 01:47:59 +00:00
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uint32_t alpha = 0;
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2005-11-30 01:40:50 +00:00
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uint8_t *ptr;
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int dsize;
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2008-02-01 15:01:05 +00:00
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const uint8_t *buf0 = buf;
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2012-03-31 17:10:54 +00:00
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GetByteContext gb;
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2005-11-30 01:40:50 +00:00
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2012-11-15 08:23:55 +00:00
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if (buf_size < 14) {
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2005-11-30 01:40:50 +00:00
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av_log(avctx, AV_LOG_ERROR, "buf size too small (%d)\n", buf_size);
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2005-11-30 01:40:50 +00:00
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}
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2012-11-15 08:23:55 +00:00
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if (bytestream_get_byte(&buf) != 'B' ||
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bytestream_get_byte(&buf) != 'M') {
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2005-11-30 01:40:50 +00:00
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av_log(avctx, AV_LOG_ERROR, "bad magic number\n");
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2005-11-30 01:40:50 +00:00
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}
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2007-01-31 00:34:56 +00:00
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fsize = bytestream_get_le32(&buf);
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2012-11-15 08:23:55 +00:00
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if (buf_size < fsize) {
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2014-03-13 11:13:33 +00:00
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av_log(avctx, AV_LOG_ERROR, "not enough data (%d < %u), trying to decode anyway\n",
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2005-11-30 01:40:50 +00:00
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buf_size, fsize);
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2009-02-16 06:57:11 +00:00
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fsize = buf_size;
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2005-11-30 01:40:50 +00:00
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}
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2007-01-31 00:34:56 +00:00
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buf += 2; /* reserved1 */
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buf += 2; /* reserved2 */
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2005-11-30 01:40:50 +00:00
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2012-11-15 08:23:55 +00:00
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hsize = bytestream_get_le32(&buf); /* header size */
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ihsize = bytestream_get_le32(&buf); /* more header size */
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2014-07-04 12:37:01 +00:00
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if (ihsize + 14LL > hsize) {
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2014-03-13 11:13:33 +00:00
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av_log(avctx, AV_LOG_ERROR, "invalid header size %u\n", hsize);
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2005-11-30 01:40:50 +00:00
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}
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2008-11-24 11:24:02 +00:00
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/* sometimes file size is set to some headers size, set a real size in that case */
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2012-11-15 08:23:55 +00:00
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if (fsize == 14 || fsize == ihsize + 14)
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2008-11-24 11:24:02 +00:00
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fsize = buf_size - 2;
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2012-11-15 08:23:55 +00:00
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if (fsize <= hsize) {
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2014-03-13 11:13:33 +00:00
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av_log(avctx, AV_LOG_ERROR,
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"Declared file size is less than header size (%u < %u)\n",
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2008-11-24 11:24:02 +00:00
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fsize, hsize);
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2008-11-24 11:24:02 +00:00
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}
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2012-11-15 08:23:55 +00:00
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switch (ihsize) {
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2011-12-08 01:14:36 +00:00
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case 40: // windib
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case 56: // windib v3
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2008-11-24 10:53:13 +00:00
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case 64: // OS/2 v2
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case 108: // windib v4
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case 124: // windib v5
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2012-11-15 08:23:55 +00:00
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width = bytestream_get_le32(&buf);
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2008-04-14 13:15:16 +00:00
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height = bytestream_get_le32(&buf);
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2008-11-24 10:53:13 +00:00
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break;
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case 12: // OS/2 v1
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2008-04-14 13:13:08 +00:00
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width = bytestream_get_le16(&buf);
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height = bytestream_get_le16(&buf);
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2008-11-24 10:53:13 +00:00
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break;
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default:
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2008-09-18 14:08:44 +00:00
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av_log(avctx, AV_LOG_ERROR, "unsupported BMP file, patch welcome\n");
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2012-11-15 08:26:36 +00:00
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return AVERROR_PATCHWELCOME;
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2008-04-14 13:13:08 +00:00
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}
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2005-11-30 01:40:50 +00:00
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2012-11-15 08:23:55 +00:00
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/* planes */
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if (bytestream_get_le16(&buf) != 1) {
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2005-11-30 01:40:50 +00:00
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av_log(avctx, AV_LOG_ERROR, "invalid BMP header\n");
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2005-11-30 01:40:50 +00:00
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}
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2007-01-31 00:34:56 +00:00
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depth = bytestream_get_le16(&buf);
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2005-11-30 01:40:50 +00:00
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2012-10-11 17:56:04 +00:00
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if (ihsize >= 40)
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2007-01-31 00:34:56 +00:00
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comp = bytestream_get_le32(&buf);
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2005-11-30 01:40:50 +00:00
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else
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comp = BMP_RGB;
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2012-11-15 08:23:55 +00:00
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if (comp != BMP_RGB && comp != BMP_BITFIELDS && comp != BMP_RLE4 &&
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comp != BMP_RLE8) {
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2005-11-30 01:40:50 +00:00
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av_log(avctx, AV_LOG_ERROR, "BMP coding %d not supported\n", comp);
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2005-11-30 01:40:50 +00:00
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}
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2012-11-15 08:23:55 +00:00
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if (comp == BMP_BITFIELDS) {
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2007-01-31 00:34:56 +00:00
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buf += 20;
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rgb[0] = bytestream_get_le32(&buf);
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rgb[1] = bytestream_get_le32(&buf);
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rgb[2] = bytestream_get_le32(&buf);
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2014-07-04 19:14:53 +00:00
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if (ihsize > 40)
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2012-10-11 17:56:04 +00:00
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alpha = bytestream_get_le32(&buf);
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2005-11-30 01:40:50 +00:00
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}
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2012-11-15 08:23:55 +00:00
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avctx->width = width;
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avctx->height = height > 0 ? height : -height;
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2005-11-30 01:40:50 +00:00
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_NONE;
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2005-11-30 01:40:50 +00:00
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2012-11-15 08:23:55 +00:00
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switch (depth) {
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2005-11-30 01:40:50 +00:00
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case 32:
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2012-11-15 08:23:55 +00:00
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if (comp == BMP_BITFIELDS) {
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2012-01-11 02:56:24 +00:00
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if (rgb[0] == 0xFF000000 && rgb[1] == 0x00FF0000 && rgb[2] == 0x0000FF00)
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2012-10-08 18:54:00 +00:00
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avctx->pix_fmt = alpha ? AV_PIX_FMT_ABGR : AV_PIX_FMT_0BGR;
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2012-01-11 02:56:24 +00:00
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else if (rgb[0] == 0x00FF0000 && rgb[1] == 0x0000FF00 && rgb[2] == 0x000000FF)
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2012-10-08 18:54:00 +00:00
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avctx->pix_fmt = alpha ? AV_PIX_FMT_BGRA : AV_PIX_FMT_BGR0;
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2012-01-11 02:56:24 +00:00
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else if (rgb[0] == 0x0000FF00 && rgb[1] == 0x00FF0000 && rgb[2] == 0xFF000000)
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2012-10-08 18:54:00 +00:00
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avctx->pix_fmt = alpha ? AV_PIX_FMT_ARGB : AV_PIX_FMT_0RGB;
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2012-01-11 02:56:24 +00:00
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else if (rgb[0] == 0x000000FF && rgb[1] == 0x0000FF00 && rgb[2] == 0x00FF0000)
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2012-10-08 18:54:00 +00:00
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avctx->pix_fmt = alpha ? AV_PIX_FMT_RGBA : AV_PIX_FMT_RGB0;
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2012-01-11 02:56:24 +00:00
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else {
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av_log(avctx, AV_LOG_ERROR, "Unknown bitfields %0X %0X %0X\n", rgb[0], rgb[1], rgb[2]);
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return AVERROR(EINVAL);
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2005-11-30 01:40:50 +00:00
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}
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} else {
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2012-10-08 18:54:00 +00:00
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avctx->pix_fmt = AV_PIX_FMT_BGRA;
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2005-11-30 01:40:50 +00:00
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}
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break;
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case 24:
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_BGR24;
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2005-11-30 01:40:50 +00:00
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break;
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case 16:
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2012-11-15 08:23:55 +00:00
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if (comp == BMP_RGB)
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_RGB555;
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2012-01-09 23:12:40 +00:00
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else if (comp == BMP_BITFIELDS) {
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if (rgb[0] == 0xF800 && rgb[1] == 0x07E0 && rgb[2] == 0x001F)
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_RGB565;
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2012-01-09 23:12:40 +00:00
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else if (rgb[0] == 0x7C00 && rgb[1] == 0x03E0 && rgb[2] == 0x001F)
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_RGB555;
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2012-01-09 23:12:40 +00:00
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else if (rgb[0] == 0x0F00 && rgb[1] == 0x00F0 && rgb[2] == 0x000F)
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_RGB444;
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2012-01-09 23:12:40 +00:00
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else {
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2014-03-13 11:13:33 +00:00
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av_log(avctx, AV_LOG_ERROR,
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"Unknown bitfields %0"PRIX32" %0"PRIX32" %0"PRIX32"\n",
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rgb[0], rgb[1], rgb[2]);
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2012-01-09 23:12:40 +00:00
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return AVERROR(EINVAL);
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}
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}
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2008-09-23 08:38:32 +00:00
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break;
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case 8:
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2012-11-15 08:23:55 +00:00
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if (hsize - ihsize - 14 > 0)
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_PAL8;
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2008-09-23 08:38:32 +00:00
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else
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_GRAY8;
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2008-09-23 08:38:32 +00:00
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break;
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2011-11-10 22:07:27 +00:00
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case 1:
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2008-09-23 08:38:32 +00:00
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case 4:
|
2012-11-15 08:23:55 +00:00
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if (hsize - ihsize - 14 > 0) {
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2012-10-06 10:10:34 +00:00
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avctx->pix_fmt = AV_PIX_FMT_PAL8;
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2012-11-15 08:23:55 +00:00
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} else {
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2014-03-13 11:13:33 +00:00
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av_log(avctx, AV_LOG_ERROR, "Unknown palette for %u-colour BMP\n",
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1 << depth);
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2008-09-23 08:38:32 +00:00
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}
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break;
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2005-11-30 01:40:50 +00:00
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default:
|
2014-03-13 11:13:33 +00:00
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av_log(avctx, AV_LOG_ERROR, "depth %u not supported\n", depth);
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2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
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2005-11-30 01:40:50 +00:00
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}
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2012-11-15 08:23:55 +00:00
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if (avctx->pix_fmt == AV_PIX_FMT_NONE) {
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2005-11-30 01:40:50 +00:00
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av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
|
2012-11-15 08:26:36 +00:00
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return AVERROR_INVALIDDATA;
|
2005-11-30 01:40:50 +00:00
|
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|
}
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lavc: factorize ff_{thread_,re,}get_buffer error messages.
Coccinelle profile used:
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_get_buffer(ctx, f, flags)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str;
@@
-if ((r = ff_reget_buffer(ctx, f)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_reget_buffer(ctx, f)) < 0)
+ return r;
@@
expression r, ctx, f, loglevel, str, flags;
@@
-if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) {
- av_log(ctx, loglevel, str);
- return r;
-}
+if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0)
+ return r;
...along with some manual patches for the remaining ones.
2013-03-12 07:41:53 +00:00
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if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
|
2012-11-15 08:26:36 +00:00
|
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return ret;
|
2011-04-27 23:40:44 +00:00
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|
p->pict_type = AV_PICTURE_TYPE_I;
|
2005-11-30 01:40:50 +00:00
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p->key_frame = 1;
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|
2012-11-15 08:23:55 +00:00
|
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|
buf = buf0 + hsize;
|
2005-11-30 01:40:50 +00:00
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dsize = buf_size - hsize;
|
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|
2006-10-30 20:43:07 +00:00
|
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|
/* Line size in file multiple of 4 */
|
2011-12-15 18:23:07 +00:00
|
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|
n = ((avctx->width * depth + 31) / 8) & ~3;
|
2005-11-30 01:40:50 +00:00
|
|
|
|
2012-11-15 08:23:55 +00:00
|
|
|
if (n * avctx->height > dsize && comp != BMP_RLE4 && comp != BMP_RLE8) {
|
2015-01-26 19:19:17 +00:00
|
|
|
n = (avctx->width * depth + 7) / 8;
|
|
|
|
if (n * avctx->height > dsize) {
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "not enough data (%d < %d)\n",
|
|
|
|
dsize, n * avctx->height);
|
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
}
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "data size too small, assuming missing line alignment\n");
|
2005-11-30 01:40:50 +00:00
|
|
|
}
|
|
|
|
|
2008-09-23 08:45:12 +00:00
|
|
|
// RLE may skip decoding some picture areas, so blank picture before decoding
|
2012-11-15 08:23:55 +00:00
|
|
|
if (comp == BMP_RLE4 || comp == BMP_RLE8)
|
2008-09-23 08:45:12 +00:00
|
|
|
memset(p->data[0], 0, avctx->height * p->linesize[0]);
|
|
|
|
|
2012-11-15 08:23:55 +00:00
|
|
|
if (height > 0) {
|
|
|
|
ptr = p->data[0] + (avctx->height - 1) * p->linesize[0];
|
2005-11-30 01:40:50 +00:00
|
|
|
linesize = -p->linesize[0];
|
|
|
|
} else {
|
2012-11-15 08:23:55 +00:00
|
|
|
ptr = p->data[0];
|
2005-11-30 01:40:50 +00:00
|
|
|
linesize = p->linesize[0];
|
|
|
|
}
|
|
|
|
|
2012-11-15 08:23:55 +00:00
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_PAL8) {
|
2009-09-24 05:24:46 +00:00
|
|
|
int colors = 1 << depth;
|
2012-09-16 06:33:09 +00:00
|
|
|
|
|
|
|
memset(p->data[1], 0, 1024);
|
|
|
|
|
2012-11-15 08:23:55 +00:00
|
|
|
if (ihsize >= 36) {
|
2009-09-24 05:24:46 +00:00
|
|
|
int t;
|
|
|
|
buf = buf0 + 46;
|
2012-11-15 08:23:55 +00:00
|
|
|
t = bytestream_get_le32(&buf);
|
|
|
|
if (t < 0 || t > (1 << depth)) {
|
2014-03-13 11:13:33 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR,
|
|
|
|
"Incorrect number of colors - %X for bitdepth %u\n",
|
|
|
|
t, depth);
|
2012-11-15 08:23:55 +00:00
|
|
|
} else if (t) {
|
2009-09-24 05:24:46 +00:00
|
|
|
colors = t;
|
|
|
|
}
|
2014-07-04 19:23:53 +00:00
|
|
|
} else {
|
|
|
|
colors = FFMIN(256, (hsize-ihsize-14) / 3);
|
2009-09-24 05:24:46 +00:00
|
|
|
}
|
2008-09-23 08:38:32 +00:00
|
|
|
buf = buf0 + 14 + ihsize; //palette location
|
2012-11-15 08:23:55 +00:00
|
|
|
// OS/2 bitmap, 3 bytes per palette entry
|
|
|
|
if ((hsize-ihsize-14) < (colors << 2)) {
|
2013-02-19 15:59:26 +00:00
|
|
|
if ((hsize-ihsize-14) < colors * 3) {
|
2013-06-29 00:24:26 +00:00
|
|
|
av_log(avctx, AV_LOG_ERROR, "palette doesn't fit in packet\n");
|
2013-02-19 15:59:26 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
|
|
|
}
|
2012-11-15 08:23:55 +00:00
|
|
|
for (i = 0; i < colors; i++)
|
2012-10-14 01:34:16 +00:00
|
|
|
((uint32_t*)p->data[1])[i] = (0xFFU<<24) | bytestream_get_le24(&buf);
|
2012-11-15 08:23:55 +00:00
|
|
|
} else {
|
|
|
|
for (i = 0; i < colors; i++)
|
2011-12-29 23:48:32 +00:00
|
|
|
((uint32_t*)p->data[1])[i] = 0xFFU << 24 | bytestream_get_le32(&buf);
|
2008-09-23 08:38:32 +00:00
|
|
|
}
|
|
|
|
buf = buf0 + hsize;
|
|
|
|
}
|
2012-11-15 08:23:55 +00:00
|
|
|
if (comp == BMP_RLE4 || comp == BMP_RLE8) {
|
2013-07-18 07:36:05 +00:00
|
|
|
if (comp == BMP_RLE8 && height < 0) {
|
2012-11-15 08:23:55 +00:00
|
|
|
p->data[0] += p->linesize[0] * (avctx->height - 1);
|
2009-10-01 05:46:17 +00:00
|
|
|
p->linesize[0] = -p->linesize[0];
|
|
|
|
}
|
2012-03-31 17:10:54 +00:00
|
|
|
bytestream2_init(&gb, buf, dsize);
|
|
|
|
ff_msrle_decode(avctx, (AVPicture*)p, depth, &gb);
|
2012-11-15 08:23:55 +00:00
|
|
|
if (height < 0) {
|
|
|
|
p->data[0] += p->linesize[0] * (avctx->height - 1);
|
2009-10-01 05:46:17 +00:00
|
|
|
p->linesize[0] = -p->linesize[0];
|
|
|
|
}
|
2012-11-15 08:23:55 +00:00
|
|
|
} else {
|
|
|
|
switch (depth) {
|
2008-09-23 08:45:46 +00:00
|
|
|
case 1:
|
2011-11-10 22:07:27 +00:00
|
|
|
for (i = 0; i < avctx->height; i++) {
|
2011-11-10 22:07:27 +00:00
|
|
|
int j;
|
2011-11-10 22:07:27 +00:00
|
|
|
for (j = 0; j < n; j++) {
|
2011-11-10 22:07:27 +00:00
|
|
|
ptr[j*8+0] = buf[j] >> 7;
|
|
|
|
ptr[j*8+1] = (buf[j] >> 6) & 1;
|
|
|
|
ptr[j*8+2] = (buf[j] >> 5) & 1;
|
|
|
|
ptr[j*8+3] = (buf[j] >> 4) & 1;
|
|
|
|
ptr[j*8+4] = (buf[j] >> 3) & 1;
|
|
|
|
ptr[j*8+5] = (buf[j] >> 2) & 1;
|
|
|
|
ptr[j*8+6] = (buf[j] >> 1) & 1;
|
|
|
|
ptr[j*8+7] = buf[j] & 1;
|
|
|
|
}
|
|
|
|
buf += n;
|
|
|
|
ptr += linesize;
|
|
|
|
}
|
|
|
|
break;
|
2009-03-27 16:31:47 +00:00
|
|
|
case 8:
|
|
|
|
case 24:
|
2012-01-11 02:56:24 +00:00
|
|
|
case 32:
|
2012-11-15 08:23:55 +00:00
|
|
|
for (i = 0; i < avctx->height; i++) {
|
2008-09-23 08:45:46 +00:00
|
|
|
memcpy(ptr, buf, n);
|
|
|
|
buf += n;
|
|
|
|
ptr += linesize;
|
2008-09-23 08:38:32 +00:00
|
|
|
}
|
2008-09-23 08:45:46 +00:00
|
|
|
break;
|
|
|
|
case 4:
|
2012-11-15 08:23:55 +00:00
|
|
|
for (i = 0; i < avctx->height; i++) {
|
2008-09-23 08:45:46 +00:00
|
|
|
int j;
|
2012-11-15 08:23:55 +00:00
|
|
|
for (j = 0; j < n; j++) {
|
2008-09-23 08:45:46 +00:00
|
|
|
ptr[j*2+0] = (buf[j] >> 4) & 0xF;
|
|
|
|
ptr[j*2+1] = buf[j] & 0xF;
|
|
|
|
}
|
|
|
|
buf += n;
|
|
|
|
ptr += linesize;
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case 16:
|
2012-11-15 08:23:55 +00:00
|
|
|
for (i = 0; i < avctx->height; i++) {
|
2008-09-23 08:45:46 +00:00
|
|
|
const uint16_t *src = (const uint16_t *) buf;
|
2012-11-15 08:23:55 +00:00
|
|
|
uint16_t *dst = (uint16_t *) ptr;
|
2005-11-30 01:40:50 +00:00
|
|
|
|
2012-11-15 08:23:55 +00:00
|
|
|
for (j = 0; j < avctx->width; j++)
|
2010-07-10 22:12:30 +00:00
|
|
|
*dst++ = av_le2ne16(*src++);
|
2005-11-30 01:40:50 +00:00
|
|
|
|
2008-09-23 08:45:46 +00:00
|
|
|
buf += n;
|
|
|
|
ptr += linesize;
|
2005-11-30 01:40:50 +00:00
|
|
|
}
|
2008-09-23 08:45:46 +00:00
|
|
|
break;
|
|
|
|
default:
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "BMP decoder is broken\n");
|
2012-11-15 08:26:36 +00:00
|
|
|
return AVERROR_INVALIDDATA;
|
2005-11-30 01:40:50 +00:00
|
|
|
}
|
2008-09-23 08:45:12 +00:00
|
|
|
}
|
2015-09-10 14:06:14 +00:00
|
|
|
if (avctx->pix_fmt == AV_PIX_FMT_BGRA) {
|
|
|
|
for (i = 0; i < avctx->height; i++) {
|
|
|
|
int j;
|
|
|
|
uint8_t *ptr = p->data[0] + p->linesize[0]*i + 3;
|
|
|
|
for (j = 0; j < avctx->width; j++) {
|
|
|
|
if (ptr[4*j])
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (j < avctx->width)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (i == avctx->height)
|
|
|
|
avctx->pix_fmt = p->format = AV_PIX_FMT_BGR0;
|
|
|
|
}
|
2005-11-30 01:40:50 +00:00
|
|
|
|
2012-11-13 18:35:22 +00:00
|
|
|
*got_frame = 1;
|
2005-11-30 01:40:50 +00:00
|
|
|
|
|
|
|
return buf_size;
|
|
|
|
}
|
|
|
|
|
2011-01-25 21:40:11 +00:00
|
|
|
AVCodec ff_bmp_decoder = {
|
2011-07-17 10:54:31 +00:00
|
|
|
.name = "bmp",
|
2013-10-03 20:57:53 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("BMP (Windows and OS/2 bitmap)"),
|
2011-07-17 10:54:31 +00:00
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
2012-08-05 09:11:04 +00:00
|
|
|
.id = AV_CODEC_ID_BMP,
|
2011-07-17 10:54:31 +00:00
|
|
|
.decode = bmp_decode_frame,
|
2015-07-07 00:41:27 +00:00
|
|
|
.capabilities = AV_CODEC_CAP_DR1,
|
2005-11-30 01:40:50 +00:00
|
|
|
};
|