static int dca_find_frame_end(DCAParseContext *pc1, const uint8_t *buf, int buf_size) { int start_found, i; uint32_t state; ParseContext *pc = &pc1->pc; start_found = pc->frame_start_found; state = pc->state; i = 0; if (!start_found) { for (i = 0; i < buf_size; i++) { state = (state << 8) | buf[i]; if (IS_MARKER(state, i, buf, buf_size)) { if (!pc1->lastmarker || state == pc1->lastmarker || pc1->lastmarker == DCA_SYNCWORD_SUBSTREAM) { start_found = 1; pc1->lastmarker = state; i++; break; } } } } if (start_found) { for (; i < buf_size; i++) { pc1->size++; state = (state << 8) | buf[i]; if (state == DCA_SYNCWORD_SUBSTREAM && !pc1->hd_pos) pc1->hd_pos = pc1->size; if (IS_MARKER(state, i, buf, buf_size) && (state == pc1->lastmarker || pc1->lastmarker == DCA_SYNCWORD_SUBSTREAM)) { if (pc1->framesize > pc1->size) continue; pc->frame_start_found = 0; pc->state = -1; pc1->size = 0; return i - 3; } } } pc->frame_start_found = start_found; pc->state = state; return END_NOT_FOUND; }