int main(int argc, char **argv) { int frame_cnt = 0; FILE *outfile = NULL; vpx_codec_ctx_t codec; VpxVideoReader *reader = NULL; const VpxVideoInfo *info = NULL; const VpxInterface *decoder = NULL; exec_name = argv[0]; if (argc != 3) die("Invalid number of arguments."); reader = vpx_video_reader_open(argv[1]); if (!reader) die("Failed to open %s for reading.", argv[1]); if (!(outfile = fopen(argv[2], "wb"))) die("Failed to open %s for writing.", argv[2]); info = vpx_video_reader_get_info(reader); decoder = get_vpx_decoder_by_fourcc(info->codec_fourcc); if (!decoder) die("Unknown input codec."); printf("Using %s\n", vpx_codec_iface_name(decoder->codec_interface())); if (vpx_codec_dec_init(&codec, decoder->codec_interface(), NULL, 0)) die_codec(&codec, "Failed to initialize decoder"); while (vpx_video_reader_read_frame(reader)) { vpx_codec_iter_t iter = NULL; vpx_image_t *img = NULL; size_t frame_size = 0; const unsigned char *frame = vpx_video_reader_get_frame(reader, &frame_size); if (vpx_codec_decode(&codec, frame, (unsigned int)frame_size, NULL, 0)) die_codec(&codec, "Failed to decode frame"); while ((img = vpx_codec_get_frame(&codec, &iter)) != NULL) { unsigned char digest[16]; get_image_md5(img, digest); print_md5(outfile, digest); fprintf(outfile, " img-%dx%d-%04d.i420\n", img->d_w, img->d_h, ++frame_cnt); } } printf("Processed %d frames.\n", frame_cnt); if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec."); vpx_video_reader_close(reader); fclose(outfile); return EXIT_SUCCESS; }
int main(int argc, char **argv) { FILE *infile, *outfile; vpx_codec_ctx_t codec; vpx_codec_iface_t *iface; int flags = 0, frame_cnt = 0; unsigned char file_hdr[IVF_FILE_HDR_SZ]; unsigned char frame_hdr[IVF_FRAME_HDR_SZ]; unsigned char frame[256 * 1024]; if (argc != 3) die("Usage: %s <infile> <outfile>\n", argv[0]); if (!(infile = fopen(argv[1], "rb"))) die("Failed to open %s for reading", argv[1]); if (!(outfile = fopen(argv[2], "wb"))) die("Failed to open %s for writing", argv[2]); if (!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ && file_hdr[0] == 'D' && file_hdr[1] == 'K' && file_hdr[2] == 'I' && file_hdr[3] == 'F')) die("%s is not an IVF file.", argv[1]); iface = get_codec_interface(mem_get_le32(file_hdr + 8)); if (!iface) die("Unknown FOURCC code."); printf("Using %s\n", vpx_codec_iface_name(iface)); if (vpx_codec_dec_init(&codec, iface, NULL, flags)) die_codec(&codec, "Failed to initialize decoder"); while (fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) { const int frame_size = mem_get_le32(frame_hdr); vpx_codec_iter_t iter = NULL; vpx_image_t *img; if (frame_size > sizeof(frame)) die("Frame %d data too big for example code buffer", frame_size); if (fread(frame, 1, frame_size, infile) != frame_size) die("Failed to read complete frame"); if (vpx_codec_decode(&codec, frame, frame_size, NULL, 0)) die_codec(&codec, "Failed to decode frame"); while ((img = vpx_codec_get_frame(&codec, &iter)) != NULL) { unsigned char digest[16]; get_image_md5(img, digest); print_md5(outfile, digest); fprintf(outfile, " img-%dx%d-%04d.i420\n", img->d_w, img->d_h, ++frame_cnt); } } printf("Processed %d frames.\n", frame_cnt); if (vpx_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec"); fclose(outfile); fclose(infile); return EXIT_SUCCESS; }