framecrcenc.c 1.5 KB

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  1. /*
  2. * frame CRC encoder (for codec/format testing)
  3. * Copyright (c) 2002 Fabrice Bellard
  4. *
  5. * This file is part of FFmpeg.
  6. *
  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.
  11. *
  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.
  16. *
  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
  20. */
  21. #include "libavutil/adler32.h"
  22. #include "avformat.h"
  23. static int framecrc_write_packet(struct AVFormatContext *s, AVPacket *pkt)
  24. {
  25. uint32_t crc = av_adler32_update(0, pkt->data, pkt->size);
  26. char buf[256];
  27. snprintf(buf, sizeof(buf), "%d, %"PRId64", %d, 0x%08x\n", pkt->stream_index, pkt->dts, pkt->size, crc);
  28. put_buffer(s->pb, buf, strlen(buf));
  29. put_flush_packet(s->pb);
  30. return 0;
  31. }
  32. AVOutputFormat framecrc_muxer = {
  33. "framecrc",
  34. NULL_IF_CONFIG_SMALL("framecrc testing format"),
  35. NULL,
  36. "",
  37. 0,
  38. CODEC_ID_PCM_S16LE,
  39. CODEC_ID_RAWVIDEO,
  40. NULL,
  41. framecrc_write_packet,
  42. NULL,
  43. };