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alpha: Fix planar YUV->RGB processing

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This commit is contained in:
Sebastian Dröge 2010-04-22 15:45:15 +02:00
parent 1897ab2928
commit f71157fa06
1 changed files with 10 additions and 18 deletions
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28
gst/alpha/gstalpha.c
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@ -1514,11 +1514,10 @@ gst_alpha_set_planar_yuv_argb (const guint8 * src, guint8 * dest, gint width,
gint height, GstAlpha * alpha) gint height, GstAlpha * alpha)
{ {
gint b_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255); gint b_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255);
const guint8 *srcY; const guint8 *srcY, *srcY_tmp;
const guint8 *srcU, *srcU_tmp; const guint8 *srcU, *srcU_tmp;
const guint8 *srcV, *srcV_tmp; const guint8 *srcV, *srcV_tmp;
gint i, j; gint i, j;
gint src_wrap, src_uv_wrap;
gint y_stride, uv_stride; gint y_stride, uv_stride;
gint v_subs, h_subs; gint v_subs, h_subs;
gint matrix[12]; gint matrix[12];
@ -1542,10 +1541,7 @@ gst_alpha_set_planar_yuv_argb (const guint8 * src, guint8 * dest, gint width,
y_stride = gst_video_format_get_row_stride (alpha->in_format, 0, width); y_stride = gst_video_format_get_row_stride (alpha->in_format, 0, width);
uv_stride = gst_video_format_get_row_stride (alpha->in_format, 1, width); uv_stride = gst_video_format_get_row_stride (alpha->in_format, 1, width);
src_wrap = y_stride - width; srcY_tmp = srcY = src;
src_uv_wrap = uv_stride - (width / 2);
srcY = src;
srcU_tmp = srcU = srcU_tmp = srcU =
src + gst_video_format_get_component_offset (alpha->in_format, 1, width, src + gst_video_format_get_component_offset (alpha->in_format, 1, width,
height); height);
@ -1601,10 +1597,10 @@ gst_alpha_set_planar_yuv_argb (const guint8 * src, guint8 * dest, gint width,
} }
} }
srcY += src_wrap; srcY_tmp = srcY = srcY_tmp + y_stride;
if ((i + 1) % v_subs == 0) { if ((i + 1) % v_subs == 0) {
srcU_tmp = srcU += src_uv_wrap; srcU_tmp = srcU = srcU_tmp + uv_stride;
srcV_tmp = srcV += src_uv_wrap; srcV_tmp = srcV = srcV_tmp + uv_stride;
} else { } else {
srcU = srcU_tmp; srcU = srcU_tmp;
srcV = srcV_tmp; srcV = srcV_tmp;
@ -1617,13 +1613,12 @@ gst_alpha_chroma_key_planar_yuv_argb (const guint8 * src, guint8 * dest,
gint width, gint height, GstAlpha * alpha) gint width, gint height, GstAlpha * alpha)
{ {
gint b_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255); gint b_alpha = CLAMP ((gint) (alpha->alpha * 255), 0, 255);
const guint8 *srcY; const guint8 *srcY, *srcY_tmp;
const guint8 *srcU, *srcU_tmp; const guint8 *srcU, *srcU_tmp;
const guint8 *srcV, *srcV_tmp; const guint8 *srcV, *srcV_tmp;
gint i, j; gint i, j;
gint a, y, u, v; gint a, y, u, v;
gint r, g, b; gint r, g, b;
gint src_wrap, src_uv_wrap;
gint y_stride, uv_stride; gint y_stride, uv_stride;
gint v_subs, h_subs; gint v_subs, h_subs;
gint smin = 128 - alpha->black_sensitivity; gint smin = 128 - alpha->black_sensitivity;
@ -1654,10 +1649,7 @@ gst_alpha_chroma_key_planar_yuv_argb (const guint8 * src, guint8 * dest,
y_stride = gst_video_format_get_row_stride (alpha->in_format, 0, width); y_stride = gst_video_format_get_row_stride (alpha->in_format, 0, width);
uv_stride = gst_video_format_get_row_stride (alpha->in_format, 1, width); uv_stride = gst_video_format_get_row_stride (alpha->in_format, 1, width);
src_wrap = y_stride - width; srcY_tmp = srcY = src;
src_uv_wrap = uv_stride - (width / 2);
srcY = src;
srcU_tmp = srcU = srcU_tmp = srcU =
src + gst_video_format_get_component_offset (alpha->in_format, 1, width, src + gst_video_format_get_component_offset (alpha->in_format, 1, width,
height); height);
@ -1720,10 +1712,10 @@ gst_alpha_chroma_key_planar_yuv_argb (const guint8 * src, guint8 * dest,
} }
} }
srcY += src_wrap; srcY_tmp = srcY = srcY_tmp + y_stride;
if ((i + 1) % v_subs == 0) { if ((i + 1) % v_subs == 0) {
srcU_tmp = srcU += src_uv_wrap; srcU_tmp = srcU = srcU_tmp + uv_stride;
srcV_tmp = srcV += src_uv_wrap; srcV_tmp = srcV = srcV_tmp + uv_stride;
} else { } else {
srcU = srcU_tmp; srcU = srcU_tmp;
srcV = srcV_tmp; srcV = srcV_tmp;