| 35 | static const int16_t g_kMvdBinPos2Ctx [8] = {0, 1, 2, 3, 3, 3, 3, 3}; |
| 36 | |
| 37 | void WelsCabacGlobalInit (PWelsDecoderContext pCtx) { |
| 38 | for (int32_t iModel = 0; iModel < 4; iModel++) { |
| 39 | for (int32_t iQp = 0; iQp <= WELS_QP_MAX; iQp++) |
| 40 | for (int32_t iIdx = 0; iIdx < WELS_CONTEXT_COUNT; iIdx++) { |
| 41 | int32_t m = g_kiCabacGlobalContextIdx[iIdx][iModel][0]; |
| 42 | int32_t n = g_kiCabacGlobalContextIdx[iIdx][iModel][1]; |
| 43 | int32_t iPreCtxState = WELS_CLIP3 ((((m * iQp) >> 4) + n), 1, 126); |
| 44 | uint8_t uiValMps = 0; |
| 45 | uint8_t uiStateIdx = 0; |
| 46 | if (iPreCtxState <= 63) { |
| 47 | uiStateIdx = 63 - iPreCtxState; |
| 48 | uiValMps = 0; |
| 49 | } else { |
| 50 | uiStateIdx = iPreCtxState - 64; |
| 51 | uiValMps = 1; |
| 52 | } |
| 53 | pCtx->sWelsCabacContexts[iModel][iQp][iIdx].uiState = uiStateIdx; |
| 54 | pCtx->sWelsCabacContexts[iModel][iQp][iIdx].uiMPS = uiValMps; |
| 55 | } |
| 56 | } |
| 57 | pCtx->bCabacInited = true; |
| 58 | } |
| 59 | |
| 60 | // ------------------- 1. context initialization |
| 61 | void WelsCabacContextInit (PWelsDecoderContext pCtx, uint8_t eSliceType, int32_t iCabacInitIdc, int32_t iQp) { |
no outgoing calls
no test coverage detected