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tidying up

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chudov
2009-09-08 09:51:33 +00:00
parent ef6617b4b6
commit e05fbc88f5
2 changed files with 67 additions and 36 deletions
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48
CUETools.FlaCuda/flacuda.cu
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@@ -114,40 +114,34 @@ extern "C" __global__ void cudaEncodeResidual(
for (int c = 0; c <= residualOrder; c++)
sum += __mul24(shared.data[tid + c], shared.coefs[residualOrder - c]);
int res = shared.data[tid + residualOrder + 1] - (sum >> shared.shift);
__syncthreads();
//__syncthreads();
int limit = min(frameSize - pos - residualOrder - 1, step);
shared.residual[tid] = tid < limit ? (2 * res) ^ (res >> 31) : 0;
shared.residual[tid] = __mul24(tid < limit, (2 * res) ^ (res >> 31));
__syncthreads();
// reduction in shared mem
for(unsigned int s=blockDim.x/2; s >= blockDim.y; s>>=1)
{
if (threadIdx.x < s)
shared.residual[tid] += shared.residual[tid + s];
__syncthreads();
}
for(unsigned int s=blockDim.y/2; s >= blockDim.x; s>>=1)
{
if (threadIdx.y < s)
shared.residual[tid] += shared.residual[tid + s * blockDim.x];
__syncthreads();
}
for(unsigned int s=min(blockDim.x,blockDim.y)/2; s > 0; s>>=1)
{
if (threadIdx.x < s && threadIdx.y < s)
shared.residual[tid] += shared.residual[tid + s] + shared.residual[tid + s * blockDim.x] + shared.residual[tid + s + s * blockDim.x];
__syncthreads();
}
if (tid < 128) shared.residual[tid] += shared.residual[tid + 128]; __syncthreads();
if (tid < 64) shared.residual[tid] += shared.residual[tid + 64]; __syncthreads();
if (tid < 32) shared.residual[tid] += shared.residual[tid + 32]; __syncthreads();
shared.residual[tid] += shared.residual[tid + 16];
shared.residual[tid] += shared.residual[tid + 8];
shared.residual[tid] += shared.residual[tid + 4];
shared.residual[tid] += shared.residual[tid + 2];
shared.residual[tid] += shared.residual[tid + 1];
__syncthreads();
if (tid < 15) shared.rice[tid] = limit * (tid + 1) + ((shared.residual[0] - (limit >> 1)) >> tid); __syncthreads();
if (tid < 8) shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 8]); __syncthreads();
if (tid < 4) shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 4]); __syncthreads();
if (tid < 2) shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 2]); __syncthreads();
if (tid < 1) shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 1]); __syncthreads();
total += shared.rice[0];
if (tid < 16)
{
shared.rice[tid] = __mul24(tid == 15, 0x7fffff) + limit * (tid + 1) + ((shared.residual[0] - (limit >> 1)) >> tid);
shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 8]);
shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 4]);
shared.rice[tid] = min(shared.rice[tid], shared.rice[tid + 2]);
total += min(shared.rice[tid], shared.rice[tid + 1]);
}
__syncthreads();
}
__syncthreads();
if (tid == 0)
output[blockIdx.x + blockIdx.y * gridDim.x] = total;
#ifdef __DEVICE_EMULATION__