FaSTTUBe/GST-Tensordecoder-ov_ep
37
0
Fork 0
Code Issues Pull Requests 1 Actions Packages Projects Releases Wiki Activity

videobox: Fix I420->AYUV copying

Browse Source
This commit is contained in:
Sebastian Dröge 2010-04-12 11:43:49 +02:00
parent 9da4f2906f
commit 37e3d2d9d5
1 changed files with 43 additions and 114 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

157
gst/videobox/gstvideobox.c
View File

@ -570,9 +570,9 @@ copy_i420_ayuv (guint i_alpha, GstVideoFormat dest_format, guint8 * dest,
gboolean src_sdtv, gint src_width, gint src_height, gint src_x, gint src_y,
gint w, gint h)
{
gint i;
const guint8 *srcY, *srcU, *srcV;
gint src_strideY, src_strideUV;
gint dest_stride;
gint widthY, widthUV;
gint hY, hUV;
@ -591,8 +591,9 @@ copy_i420_ayuv (guint i_alpha, GstVideoFormat dest_format, guint8 * dest,
src + gst_video_format_get_component_offset (src_format, 2,
src_width, src_height);
dest_stride = dest_width * 4;
dest = dest + dest_y * dest_width * 4 + dest_x * 4;
dest = dest + dest_y * dest_stride + dest_x * 4;
srcY = srcY + src_y * src_strideY + src_x;
srcU = srcU + (src_y / 2) * src_strideUV + src_x / 2;
@ -604,137 +605,65 @@ copy_i420_ayuv (guint i_alpha, GstVideoFormat dest_format, guint8 * dest,
hY = h;
hUV = (h + 1) / 2;
i_alpha = CLAMP (i_alpha, 0, 255);
if (src_sdtv != dest_sdtv) {
gint i, j, uv_idx;
gint y, u, v;
gint y1, u1, v1;
gint matrix[12];
gint y1, y2, y3, y4;
gint u1, u2, u3, u4;
gint v1, v2, v3, v4;
gint j;
guint8 *dest2;
const guint8 *srcY2 = srcY + src_strideY;
dest2 = dest + dest_width * 4;
src_strideY *= 2;
memcpy (matrix,
dest_sdtv ? cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit :
cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit, 12 * sizeof (gint));
for (i = 0; i < hUV; i++) {
if (i * 2 == hY) {
srcY2 = srcY;
for (i = 0; i < h; i++) {
for (j = 0, uv_idx = src_x % 2; j < w; j++, uv_idx++) {
y = srcY[j];
u = srcU[uv_idx / 2];
v = srcV[uv_idx / 2];
y1 = APPLY_MATRIX (matrix, 0, y, u, v);
u1 = APPLY_MATRIX (matrix, 1, y, u, v);
v1 = APPLY_MATRIX (matrix, 2, y, u, v);
dest[4 * j + 0] = i_alpha;
dest[4 * j + 1] = y1;
dest[4 * j + 2] = u1;
dest[4 * j + 3] = v1;
}
dest += dest_stride;
for (j = 0; j < widthUV; j++) {
y1 = srcY[2 * j];
y3 = srcY2[2 * j];
y2 = (j * 2 < widthY) ? srcY[2 * j + 1] : y1;
y4 = (j * 2 < widthY) ? srcY2[2 * j + 1] : y3;
u1 = u2 = u3 = u4 = srcU[j];
v1 = v2 = v3 = v4 = srcV[j];
y1 = APPLY_MATRIX (matrix, 0, y1, u1, v1);
u1 = APPLY_MATRIX (matrix, 1, y1, u1, v1);
v1 = APPLY_MATRIX (matrix, 2, y1, u1, v1);
y3 = APPLY_MATRIX (matrix, 0, y3, u3, v3);
u3 = APPLY_MATRIX (matrix, 1, y3, u3, v3);
v3 = APPLY_MATRIX (matrix, 2, y3, u3, v3);
if (j * 2 < widthY) {
y2 = APPLY_MATRIX (matrix, 0, y2, u2, v2);
u2 = APPLY_MATRIX (matrix, 1, y2, u2, v2);
v2 = APPLY_MATRIX (matrix, 2, y2, u2, v2);
y4 = APPLY_MATRIX (matrix, 0, y4, u4, v4);
u4 = APPLY_MATRIX (matrix, 1, y4, u4, v4);
v4 = APPLY_MATRIX (matrix, 2, y4, u4, v4);
}
dest[8 * j] = i_alpha;
dest[8 * j + 1] = y1;
dest[8 * j + 2] = u1;
dest[8 * j + 3] = v1;
dest2[8 * j] = i_alpha;
dest2[8 * j + 1] = y3;
dest2[8 * j + 2] = u3;
dest2[8 * j + 3] = v3;
if (j * 2 < widthY) {
dest[8 * j + 4] = i_alpha;
dest[8 * j + 5] = y2;
dest[8 * j + 6] = u2;
dest[8 * j + 7] = v2;
dest2[8 * j + 4] = i_alpha;
dest2[8 * j + 5] = y4;
dest2[8 * j + 6] = u4;
dest2[8 * j + 7] = v4;
}
}
dest += dest_width * 8;
src_y++;
srcY += src_strideY;
dest2 += dest_width * 8;
srcY2 += src_strideY;
srcU += src_strideUV;
srcV += src_strideUV;
if (src_y % 2 == 0) {
srcU += src_strideUV;
srcV += src_strideUV;
}
}
} else {
gint y1, y2, y3, y4;
gint u1, u2, u3, u4;
gint v1, v2, v3, v4;
gint j;
guint8 *dest2;
const guint8 *srcY2 = srcY + src_strideY;
gint i, j, uv_idx;
gint y, u, v;
dest2 = dest + dest_width * 4;
for (i = 0; i < h; i++) {
for (j = 0, uv_idx = src_x % 2; j < w; j++, uv_idx++) {
y = srcY[j];
u = srcU[uv_idx / 2];
v = srcV[uv_idx / 2];
src_strideY *= 2;
for (i = 0; i < hUV; i++) {
if (i * 2 == hY) {
srcY2 = srcY;
dest[4 * j + 0] = i_alpha;
dest[4 * j + 1] = y;
dest[4 * j + 2] = u;
dest[4 * j + 3] = v;
}
dest += dest_stride;
for (j = 0; j < widthUV; j++) {
y1 = srcY[2 * j];
y3 = srcY2[2 * j];
y2 = (j * 2 < widthY) ? srcY[2 * j + 1] : y1;
y4 = (j * 2 < widthY) ? srcY2[2 * j + 1] : y3;
u1 = u2 = u3 = u4 = srcU[j];
v1 = v2 = v3 = v4 = srcV[j];
dest[8 * j] = i_alpha;
dest[8 * j + 1] = y1;
dest[8 * j + 2] = u1;
dest[8 * j + 3] = v1;
dest2[8 * j] = i_alpha;
dest2[8 * j + 1] = y3;
dest2[8 * j + 2] = u3;
dest2[8 * j + 3] = v3;
if (j * 2 < widthY) {
dest[8 * j + 4] = i_alpha;
dest[8 * j + 5] = y2;
dest[8 * j + 6] = u2;
dest[8 * j + 7] = v2;
dest2[8 * j + 4] = i_alpha;
dest2[8 * j + 5] = y4;
dest2[8 * j + 6] = u4;
dest2[8 * j + 7] = v4;
}
}
dest += dest_width * 8;
src_y++;
srcY += src_strideY;
dest2 += dest_width * 8;
srcY2 += src_strideY;
srcU += src_strideUV;
srcV += src_strideUV;
if (src_y % 2 == 0) {
srcU += src_strideUV;
srcV += src_strideUV;
}
}
}
}