| 44 | } MSCCContext; |
| 45 | |
| 46 | static int rle_uncompress(AVCodecContext *avctx, GetByteContext *gb, PutByteContext *pb) |
| 47 | { |
| 48 | MSCCContext *s = avctx->priv_data; |
| 49 | unsigned x = 0, y = 0; |
| 50 | |
| 51 | while (bytestream2_get_bytes_left(gb) > 0) { |
| 52 | uint32_t fill; |
| 53 | int j; |
| 54 | unsigned run = bytestream2_get_byte(gb); |
| 55 | |
| 56 | if (run) { |
| 57 | if (bytestream2_get_bytes_left_p(pb) < run * s->bpp) |
| 58 | return AVERROR_INVALIDDATA; |
| 59 | |
| 60 | switch (avctx->bits_per_coded_sample) { |
| 61 | case 8: |
| 62 | fill = bytestream2_get_byte(gb); |
| 63 | break; |
| 64 | case 16: |
| 65 | fill = bytestream2_get_le16(gb); |
| 66 | break; |
| 67 | case 24: |
| 68 | fill = bytestream2_get_le24(gb); |
| 69 | break; |
| 70 | case 32: |
| 71 | fill = bytestream2_get_le32(gb); |
| 72 | break; |
| 73 | } |
| 74 | |
| 75 | for (j = 0; j < run; j++) { |
| 76 | switch (avctx->bits_per_coded_sample) { |
| 77 | case 8: |
| 78 | bytestream2_put_byte(pb, fill); |
| 79 | break; |
| 80 | case 16: |
| 81 | bytestream2_put_le16(pb, fill); |
| 82 | break; |
| 83 | case 24: |
| 84 | bytestream2_put_le24(pb, fill); |
| 85 | break; |
| 86 | case 32: |
| 87 | bytestream2_put_le32(pb, fill); |
| 88 | break; |
| 89 | } |
| 90 | } |
| 91 | x += run; |
| 92 | } else { |
| 93 | unsigned copy = bytestream2_get_byte(gb); |
| 94 | |
| 95 | if (copy == 0) { |
| 96 | x = 0; |
| 97 | y++; |
| 98 | bytestream2_seek_p(pb, y * avctx->width * s->bpp, SEEK_SET); |
| 99 | } else if (copy == 1) { |
| 100 | return 0; |
| 101 | } else if (copy == 2) { |
| 102 | |
| 103 | x += bytestream2_get_byte(gb); |
no test coverage detected