2 * CRC decoder (for codec/format testing)
3 * Copyright (c) 2002 Fabrice Bellard.
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 #ifdef CONFIG_CRC_MUXER
25 typedef struct CRCState
{
29 static int crc_write_header(struct AVFormatContext
*s
)
31 CRCState
*crc
= s
->priv_data
;
39 static int crc_write_packet(struct AVFormatContext
*s
, AVPacket
*pkt
)
41 CRCState
*crc
= s
->priv_data
;
42 crc
->crcval
= av_adler32_update(crc
->crcval
, pkt
->data
, pkt
->size
);
46 static int crc_write_trailer(struct AVFormatContext
*s
)
48 CRCState
*crc
= s
->priv_data
;
51 snprintf(buf
, sizeof(buf
), "CRC=0x%08x\n", crc
->crcval
);
52 put_buffer(&s
->pb
, buf
, strlen(buf
));
53 put_flush_packet(&s
->pb
);
58 #ifdef CONFIG_FRAMECRC_MUXER
59 static int framecrc_write_packet(struct AVFormatContext
*s
, AVPacket
*pkt
)
61 uint32_t crc
= av_adler32_update(0, pkt
->data
, pkt
->size
);
64 snprintf(buf
, sizeof(buf
), "%d, %"PRId64
", %d, 0x%08x\n", pkt
->stream_index
, pkt
->dts
, pkt
->size
, crc
);
65 put_buffer(&s
->pb
, buf
, strlen(buf
));
66 put_flush_packet(&s
->pb
);
71 #ifdef CONFIG_CRC_MUXER
72 AVOutputFormat crc_muxer
= {
85 #ifdef CONFIG_FRAMECRC_MUXER
86 AVOutputFormat framecrc_muxer
= {
88 "framecrc testing format",
95 framecrc_write_packet
,