| 39 | } DPXParseContext; |
| 40 | |
| 41 | static int dpx_parse(AVCodecParserContext *s, AVCodecContext *avctx, |
| 42 | const uint8_t **poutbuf, int *poutbuf_size, |
| 43 | const uint8_t *buf, int buf_size) |
| 44 | { |
| 45 | DPXParseContext *d = s->priv_data; |
| 46 | uint32_t state = d->pc.state; |
| 47 | int next = END_NOT_FOUND; |
| 48 | int i = 0; |
| 49 | |
| 50 | s->pict_type = AV_PICTURE_TYPE_I; |
| 51 | |
| 52 | *poutbuf_size = 0; |
| 53 | if (buf_size == 0) |
| 54 | next = 0; |
| 55 | |
| 56 | if (!d->pc.frame_start_found) { |
| 57 | for (; i < buf_size; i++) { |
| 58 | state = (state << 8) | buf[i]; |
| 59 | if (state == MKBETAG('S','D','P','X') || |
| 60 | state == MKTAG('S','D','P','X')) { |
| 61 | d->pc.frame_start_found = 1; |
| 62 | d->is_be = state == MKBETAG('S','D','P','X'); |
| 63 | d->index = 0; |
| 64 | break; |
| 65 | } |
| 66 | } |
| 67 | d->pc.state = state; |
| 68 | } else { |
| 69 | if (d->remaining_size) { |
| 70 | i = FFMIN(d->remaining_size, buf_size); |
| 71 | d->remaining_size -= i; |
| 72 | if (d->remaining_size) |
| 73 | goto flush; |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | for (; d->pc.frame_start_found && i < buf_size; i++) { |
| 78 | d->pc.state = (d->pc.state << 8) | buf[i]; |
| 79 | d->index++; |
| 80 | if (d->index == 17) { |
| 81 | d->fsize = d->is_be ? d->pc.state : av_bswap32(d->pc.state); |
| 82 | if (d->fsize <= 1664) { |
| 83 | d->pc.frame_start_found = 0; |
| 84 | goto flush; |
| 85 | } |
| 86 | if (d->fsize > buf_size - i + 19) |
| 87 | d->remaining_size = d->fsize - buf_size + i - 19; |
| 88 | else |
| 89 | i += d->fsize - 19; |
| 90 | |
| 91 | break; |
| 92 | } else if (d->index > 17) { |
| 93 | if (d->pc.state == MKBETAG('S','D','P','X') || |
| 94 | d->pc.state == MKTAG('S','D','P','X')) { |
| 95 | next = i - 3; |
| 96 | break; |
| 97 | } |
| 98 | } |
nothing calls this directly
no test coverage detected