mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-07-28 01:05:07 +00:00
Code Issues 1 Projects Releases Wiki Activity

alpha: Move chroma keying parameters into stack variables to prevent multiple pointer dereferences per pixel

Browse source
This commit is contained in:
Sebastian Dröge 2010-03-20 10:24:56 +01:00
parent 9d9ba5b00e
commit 1fdbfb35ff
1 changed files with 35 additions and 28 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

63
gst/alpha/gstalpha.c
View file

@ -689,6 +689,13 @@ gst_alpha_chroma_key_ayuv_ayuv (const guint8 * src, guint8 * dest, gint width,
gint a, y, u, v;
gint smin, smax;
gint pa = alpha->alpha * 255;
gint8 cb = alpha->cb, cr = alpha->cr;
gint8 kg = alpha->kg;
guint8 accept_angle_tg = alpha->accept_angle_tg;
guint8 accept_angle_ctg = alpha->accept_angle_ctg;
guint8 one_over_kc = alpha->one_over_kc;
guint8 kfgy_scale = alpha->kfgy_scale;
guint noise_level2 = alpha->noise_level2;
smin = 128 - alpha->black_sensitivity;
smax = 128 + alpha->white_sensitivity;
@ -704,10 +711,9 @@ gst_alpha_chroma_key_ayuv_ayuv (const guint8 * src, guint8 * dest, gint width,
u = src1[2] - 128;
v = src1[3] - 128;
a = chroma_keying_yuv (a, &y, 1, &u, &v, alpha->cr, alpha->cb,
smin, smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb,
smin, smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;
@ -735,10 +741,9 @@ gst_alpha_chroma_key_ayuv_ayuv (const guint8 * src, guint8 * dest, gint width,
u = APPLY_MATRIX (matrix, 1, src1[1], src1[2], src1[3]) - 128;
v = APPLY_MATRIX (matrix, 2, src1[1], src1[2], src1[3]) - 128;
a = chroma_keying_yuv (a, &y, 1, &u, &v, alpha->cr, alpha->cb,
smin, smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb,
smin, smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;
@ -763,6 +768,13 @@ gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
gint xpos;
gint a, a2, u, v;
gint smin, smax;
gint8 cb = alpha->cb, cr = alpha->cr;
gint8 kg = alpha->kg;
guint8 accept_angle_tg = alpha->accept_angle_tg;
guint8 accept_angle_ctg = alpha->accept_angle_ctg;
guint8 one_over_kc = alpha->one_over_kc;
guint8 kfgy_scale = alpha->kfgy_scale;
guint noise_level2 = alpha->noise_level2;
a = 255 * alpha->alpha;
smin = 128 - alpha->black_sensitivity;
@ -779,10 +791,9 @@ gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
u = srcU[0] - 128;
v = srcV[0] - 128;
a2 = chroma_keying_yuv (a, y, 4, &u, &v, alpha->cr, alpha->cb, smin,
smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a2 = chroma_keying_yuv (a, y, 4, &u, &v, cr, cb, smin,
smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;
@ -824,10 +835,9 @@ gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
u = APPLY_MATRIX (matrix, 1, srcY1[0], srcU[0], srcV[0]) - 128;
v = APPLY_MATRIX (matrix, 2, srcY1[0], srcU[0], srcV[0]) - 128;
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, alpha->cr, alpha->cb, smin,
smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin,
smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;
@ -841,10 +851,9 @@ gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
u = APPLY_MATRIX (matrix, 1, srcY1[1], srcU[0], srcV[0]) - 128;
v = APPLY_MATRIX (matrix, 2, srcY1[1], srcU[0], srcV[0]) - 128;
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, alpha->cr, alpha->cb, smin,
smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin,
smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;
@ -858,10 +867,9 @@ gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
u = APPLY_MATRIX (matrix, 1, srcY2[0], srcU[0], srcV[0]) - 128;
v = APPLY_MATRIX (matrix, 2, srcY2[0], srcU[0], srcV[0]) - 128;
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, alpha->cr, alpha->cb, smin,
smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin,
smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;
@ -875,10 +883,9 @@ gst_alpha_chromakey_row_i420_ayuv (GstAlpha * alpha, guint8 * dest1,
u = APPLY_MATRIX (matrix, 1, srcY2[1], srcU[0], srcV[0]) - 128;
v = APPLY_MATRIX (matrix, 2, srcY2[1], srcU[0], srcV[0]) - 128;
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, alpha->cr, alpha->cb, smin,
smax, alpha->accept_angle_tg, alpha->accept_angle_ctg,
alpha->one_over_kc, alpha->kfgy_scale, alpha->kg,
alpha->noise_level2);
a2 = chroma_keying_yuv (a, &y, 1, &u, &v, cr, cb, smin,
smax, accept_angle_tg, accept_angle_ctg,
one_over_kc, kfgy_scale, kg, noise_level2);
u += 128;
v += 128;