It is unsigned at least on arm, fixes the following warnings:
libavfilter/vf_signalstats.c:833:21: warning: taking the absolute value of unsigned type 'unsigned int' has no effect
dify += abs(yuv - AV_RN16(prev->data[0] + pw + i * 2));
masky |= yuv;
histy[yuv]++;
- dify += abs(yuv - AV_RN16(prev->data[0] + pw + i * 2));
+ dify += abs(yuv - (int)AV_RN16(prev->data[0] + pw + i * 2));
}
w += in->linesize[0];
pw += prev->linesize[0];
masku |= yuvu;
maskv |= yuvv;
histu[yuvu]++;
- difu += abs(yuvu - AV_RN16(prev->data[1] + cpw + i * 2));
+ difu += abs(yuvu - (int)AV_RN16(prev->data[1] + cpw + i * 2));
histv[yuvv]++;
- difv += abs(yuvv - AV_RN16(prev->data[2] + cpw + i * 2));
+ difv += abs(yuvv - (int)AV_RN16(prev->data[2] + cpw + i * 2));
histsat[p_sat[i]]++;
histhue[((int16_t*)p_hue)[i]]++;