mirror of https://git.ffmpeg.org/ffmpeg.git
avfilter/vf_v360: fix hfov/vfov calculation from dfov for sg projection
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@ -3542,6 +3542,15 @@ static int allocate_plane(V360Context *s, int sizeof_uv, int sizeof_ker, int siz
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static void fov_from_dfov(int format, float d_fov, float w, float h, float *h_fov, float *v_fov)
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static void fov_from_dfov(int format, float d_fov, float w, float h, float *h_fov, float *v_fov)
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{
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{
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switch (format) {
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switch (format) {
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case STEREOGRAPHIC:
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{
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const float d = 0.5f * hypotf(w, h);
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const float l = d / (tanf(d_fov * M_PI / 720.f));
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*h_fov = 2.f * atan2f(w * 0.5f, l) * 360.f / M_PI;
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*v_fov = 2.f * atan2f(h * 0.5f, l) * 360.f / M_PI;
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}
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break;
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case FISHEYE:
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case FISHEYE:
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{
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{
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const float d = 0.5f * hypotf(w, h);
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const float d = 0.5f * hypotf(w, h);
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