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96 lines
2.4 KiB
96 lines
2.4 KiB
/* |
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* CRC decoder (for codec/format testing) |
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* Copyright (c) 2002 Fabrice Bellard. |
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* |
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* This library is free software; you can redistribute it and/or |
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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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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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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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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avformat.h" |
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#include "adler32.h" |
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|
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#ifdef CONFIG_CRC_MUXER |
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typedef struct CRCState { |
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uint32_t crcval; |
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} CRCState; |
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static int crc_write_header(struct AVFormatContext *s) |
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{ |
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CRCState *crc = s->priv_data; |
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|
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/* init CRC */ |
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crc->crcval = 1; |
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return 0; |
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} |
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static int crc_write_packet(struct AVFormatContext *s, AVPacket *pkt) |
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{ |
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CRCState *crc = s->priv_data; |
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crc->crcval = av_adler32_update(crc->crcval, pkt->data, pkt->size); |
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return 0; |
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} |
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static int crc_write_trailer(struct AVFormatContext *s) |
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{ |
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CRCState *crc = s->priv_data; |
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char buf[64]; |
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snprintf(buf, sizeof(buf), "CRC=0x%08x\n", crc->crcval); |
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put_buffer(&s->pb, buf, strlen(buf)); |
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put_flush_packet(&s->pb); |
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return 0; |
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} |
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#endif |
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#ifdef CONFIG_FRAMECRC_MUXER |
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static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt) |
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{ |
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uint32_t crc = av_adler32_update(0, pkt->data, pkt->size); |
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char buf[256]; |
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snprintf(buf, sizeof(buf), "%d, %"PRId64", %d, 0x%08x\n", pkt->stream_index, pkt->dts, pkt->size, crc); |
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put_buffer(&s->pb, buf, strlen(buf)); |
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put_flush_packet(&s->pb); |
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return 0; |
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} |
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#endif |
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#ifdef CONFIG_CRC_MUXER |
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AVOutputFormat crc_muxer = { |
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"crc", |
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"crc testing format", |
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NULL, |
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"", |
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sizeof(CRCState), |
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CODEC_ID_PCM_S16LE, |
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CODEC_ID_RAWVIDEO, |
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crc_write_header, |
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crc_write_packet, |
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crc_write_trailer, |
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}; |
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#endif |
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#ifdef CONFIG_FRAMECRC_MUXER |
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AVOutputFormat framecrc_muxer = { |
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"framecrc", |
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"framecrc testing format", |
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NULL, |
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"", |
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0, |
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CODEC_ID_PCM_S16LE, |
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CODEC_ID_RAWVIDEO, |
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NULL, |
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framecrc_write_packet, |
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NULL, |
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}; |
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#endif
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