| 66 | } PrivData; |
| 67 | |
| 68 | static int frame_hash(FrameChecksum **pc, size_t *nb_c, int64_t ts, |
| 69 | const AVFrame *frame) |
| 70 | { |
| 71 | FrameChecksum *c; |
| 72 | int shift_h[4] = { 0 }, shift_v[4] = { 0 }; |
| 73 | |
| 74 | c = av_realloc_array(*pc, *nb_c + 1, sizeof(*c)); |
| 75 | if (!c) |
| 76 | return AVERROR(ENOMEM); |
| 77 | *pc = c; |
| 78 | (*nb_c)++; |
| 79 | |
| 80 | c += *nb_c - 1; |
| 81 | memset(c, 0, sizeof(*c)); |
| 82 | |
| 83 | av_pix_fmt_get_chroma_sub_sample(frame->format, &shift_h[1], &shift_v[1]); |
| 84 | shift_h[2] = shift_h[1]; |
| 85 | shift_v[2] = shift_v[1]; |
| 86 | |
| 87 | c->ts = ts; |
| 88 | for (int p = 0; frame->data[p]; p++) { |
| 89 | const uint8_t *data = frame->data[p]; |
| 90 | int linesize = av_image_get_linesize(frame->format, frame->width, p); |
| 91 | uint32_t checksum = 0; |
| 92 | |
| 93 | av_assert0(linesize >= 0); |
| 94 | |
| 95 | for (int j = 0; j < frame->height >> shift_v[p]; j++) { |
| 96 | checksum = av_adler32_update(checksum, data, linesize); |
| 97 | data += frame->linesize[p]; |
| 98 | } |
| 99 | |
| 100 | c->checksum[p] = checksum; |
| 101 | } |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
| 106 | static int recon_frame_process(PrivData *pd, const AVPacket *pkt) |
| 107 | { |
no test coverage detected