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videobox: Fix I420->I420 copying

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Fixes bug #615143.
This commit is contained in:
Sebastian Dröge 2010-04-16 15:27:12 +02:00
parent e6dd1fc3db
commit 386169b9fe
1 changed files with 409 additions and 67 deletions
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476
gst/videobox/gstvideobox.c
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@ -672,13 +672,19 @@ copy_i420_i420 (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;
gint i, j;
guint8 *destY, *destU, *destV;
const guint8 *srcY, *srcU, *srcV;
guint8 *destY2;
const guint8 *srcY2, *srcU2, *srcV2;
gint dest_strideY, dest_strideUV;
gint src_strideY, src_strideUV;
gint widthY, widthUV;
gint hY, hUV;
gint src_y_idx, src_uv_idx;
gint dest_y_idx, dest_uv_idx;
gint matrix[12];
gint y1, y2, y3, y4;
gint u1, u2, u3, u4;
gint v1, v2, v3, v4;
dest_strideY =
gst_video_format_get_row_stride (GST_VIDEO_FORMAT_I420, 0, dest_width);
@ -718,91 +724,427 @@ copy_i420_i420 (guint i_alpha, GstVideoFormat dest_format, guint8 * dest,
srcU = srcU + (src_y / 2) * src_strideUV + src_x / 2;
srcV = srcV + (src_y / 2) * src_strideUV + src_x / 2;
widthY = w;
widthUV = (w + 1) / 2;
destY2 = destY + dest_strideY;
srcY2 = srcY + src_strideY;
hY = h;
hUV = (h + 1) / 2;
if (src_sdtv != dest_sdtv) {
gint matrix[12];
gint y1, y2, y3, y4;
gint u1, u2, u3, u4;
gint v1, v2, v3, v4;
gint j;
guint8 *destY2 = destY + dest_strideY;
const guint8 *srcY2 = srcY + src_strideY;
dest_strideY *= 2;
src_strideY *= 2;
h = dest_y + h;
w = dest_x + w;
if (src_sdtv != dest_sdtv)
memcpy (matrix,
dest_sdtv ? cog_ycbcr_hdtv_to_ycbcr_sdtv_matrix_8bit :
cog_ycbcr_sdtv_to_ycbcr_hdtv_matrix_8bit, 12 * sizeof (gint));
else
memcpy (matrix, cog_identity_matrix_8bit, 12 * sizeof (gint));
for (i = 0; i < hUV; i++) {
if (i * 2 == hY) {
destY2 = destY;
srcY2 = srcY;
}
/* 1. Handle the first destination scanline specially if it
* doesn't start at the macro pixel boundary, i.e. blend
* with the background! */
if (dest_y % 2 == 1) {
/* 1.1. Handle the first destination pixel if it doesn't
* start at the macro pixel boundary, i.e. blend with
* the background! */
if (dest_x % 2 == 1) {
y1 = srcY[0];
u1 = srcU[0];
v1 = srcV[0];
for (j = 0; j < widthUV; j++) {
y1 = srcY[2 * j];
y2 = srcY[2 * j + 1];
y3 = srcY2[2 * j];
y4 = srcY2[2 * j + 1];
destY[0] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[0] =
CLAMP ((3 * destU[0] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 4, 0,
255);
destV[0] =
CLAMP ((3 * destV[0] + APPLY_MATRIX (matrix, 2, y1, u1, v1)) / 4, 0,
255);
u1 = u2 = u3 = u4 = srcU[j];
v1 = v2 = v3 = v4 = srcV[j];
j = dest_x + 1;
src_y_idx = dest_y_idx = dest_uv_idx = 1;
src_uv_idx = (src_x % 2) + 1;
} else {
j = dest_x;
src_y_idx = dest_y_idx = dest_uv_idx = 0;
src_uv_idx = (src_x % 2);
}
y1 = APPLY_MATRIX (matrix, 0, y1, u1, v1);
u1 = APPLY_MATRIX (matrix, 1, y1, u1, v1);
v1 = APPLY_MATRIX (matrix, 2, y1, u1, v1);
/* 1.2. Copy all macro pixels from the source to the destination
* but blend with the background because we're only filling
* the lower part of the macro pixels. */
for (; j < w - 1; j += 2) {
y1 = srcY[src_y_idx];
y2 = srcY[src_y_idx + 1];
y2 = APPLY_MATRIX (matrix, 0, y2, u2, v2);
u2 = APPLY_MATRIX (matrix, 1, y2, u2, v2);
v2 = APPLY_MATRIX (matrix, 2, y2, u2, v2);
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
src_uv_idx++;
u2 = srcU[src_uv_idx / 2];
v2 = srcV[src_uv_idx / 2];
src_uv_idx++;
y3 = APPLY_MATRIX (matrix, 0, y3, u3, v3);
u3 = APPLY_MATRIX (matrix, 1, y3, u3, v3);
v3 = APPLY_MATRIX (matrix, 2, y3, u3, v3);
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY[dest_y_idx + 1] =
CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destU[dest_uv_idx] =
CLAMP ((2 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1) + APPLY_MATRIX (matrix, 1, y2, u2, v2)) / 4, 0, 255);
destV[dest_uv_idx] =
CLAMP ((2 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 2, y1, u1,
v1) + APPLY_MATRIX (matrix, 2, y2, u2, v2)) / 4, 0, 255);
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_y_idx += 2;
src_y_idx += 2;
dest_uv_idx++;
}
destY[2 * j] = y1;
destY[2 * j + 1] = y2;
destY2[2 * j] = y3;
destY2[2 * j + 1] = y4;
/* 1.3. Now copy the last pixel if one exists and blend it
* with the background because we only fill part of
* the macro pixel. In case this is the last pixel of
* the destination we will a larger part. */
if (j == w - 1 && j == dest_width - 1) {
y1 = srcY[src_y_idx];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
destU[j] = (u1 + u2 + u3 + u4) / 4;
destV[j] = (v1 + v2 + v3 + v4) / 4;
}
destY += dest_strideY;
srcY += src_strideY;
destY2 += dest_strideY;
srcY2 += src_strideY;
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[dest_uv_idx] = CLAMP (
(destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 2, 0,
255);
destV[dest_uv_idx] =
CLAMP ((destV[dest_uv_idx] + APPLY_MATRIX (matrix, 2, y1, u1,
v1)) / 2, 0, 255);
} else if (j == w - 1) {
y1 = srcY[src_y_idx];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
destU += dest_strideUV;
destV += dest_strideUV;
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[dest_uv_idx] = CLAMP (
(3 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 4,
0, 255);
destV[dest_uv_idx] =
CLAMP ((3 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 2, y1, u1,
v1)) / 4, 0, 255);
}
destY += dest_strideY;
destY2 += dest_strideY;
destU += dest_strideUV;
destV += dest_strideUV;
srcY += src_strideY;
srcY2 += src_strideY;
src_y++;
if (src_y % 2 == 0) {
srcU += src_strideUV;
srcV += src_strideUV;
}
i = dest_y + 1;
} else {
for (i = 0; i < hY; i++) {
oil_copy_u8 (destY, srcY, widthY);
destY += dest_strideY;
srcY += src_strideY;
i = dest_y;
}
/* 2. Copy all macro pixel scanlines, the destination scanline
* now starts at macro pixel boundary. */
for (; i < h - 1; i += 2) {
/* 2.1. Handle the first destination pixel if it doesn't
* start at the macro pixel boundary, i.e. blend with
* the background! */
srcU2 = srcU;
srcV2 = srcV;
if (src_y % 2 == 1) {
srcU2 += src_strideUV;
srcV2 += src_strideUV;
}
for (i = 0; i < hUV; i++) {
oil_copy_u8 (destU, srcU, widthUV);
oil_copy_u8 (destV, srcV, widthUV);
destU += dest_strideUV;
destV += dest_strideUV;
srcU += src_strideUV;
srcV += src_strideUV;
if (dest_x % 2 == 1) {
y1 = srcY[0];
y2 = srcY2[0];
u1 = srcU[0];
v1 = srcV[0];
u2 = srcU2[0];
v2 = srcV2[0];
destY[0] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY2[0] = CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destU[0] = CLAMP (
(2 * destU[0] + APPLY_MATRIX (matrix, 1, y1, u1,
v1) + APPLY_MATRIX (matrix, 1, y2, u2, v2)) / 4, 0, 255);
destV[0] = CLAMP (
(2 * destV[0] + APPLY_MATRIX (matrix, 2, y1, u1,
v1) + APPLY_MATRIX (matrix, 2, y2, u2, v2)) / 4, 0, 255);
j = dest_x + 1;
src_y_idx = dest_y_idx = dest_uv_idx = 1;
src_uv_idx = (src_x % 2) + 1;
} else {
j = dest_x;
src_y_idx = dest_y_idx = dest_uv_idx = 0;
src_uv_idx = (src_x % 2);
}
/* 2.2. Copy all macro pixels from the source to the destination.
* All pixels now start at macro pixel boundary, i.e. no
* blending with the background is necessary. */
for (; j < w - 1; j += 2) {
y1 = srcY[src_y_idx];
y2 = srcY[src_y_idx + 1];
y3 = srcY2[src_y_idx];
y4 = srcY2[src_y_idx + 1];
u1 = srcU[src_uv_idx / 2];
u3 = srcU2[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
v3 = srcV2[src_uv_idx / 2];
src_uv_idx++;
u2 = srcU[src_uv_idx / 2];
u4 = srcU2[src_uv_idx / 2];
v2 = srcV[src_uv_idx / 2];
v4 = srcV2[src_uv_idx / 2];
src_uv_idx++;
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY[dest_y_idx + 1] =
CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destY2[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y3, u3, v3), 0, 255);
destY2[dest_y_idx + 1] =
CLAMP (APPLY_MATRIX (matrix, 0, y4, u4, v4), 0, 255);
destU[dest_uv_idx] = CLAMP (
(APPLY_MATRIX (matrix, 1, y1, u1, v1) + APPLY_MATRIX (matrix, 1, y2,
u2, v2) + APPLY_MATRIX (matrix, 1, y3, u3,
v3) + APPLY_MATRIX (matrix, 1, y4, u4, v4)) / 4, 0, 255);
destV[dest_uv_idx] = CLAMP (
(APPLY_MATRIX (matrix, 2, y1, u1, v1) + APPLY_MATRIX (matrix, 2, y2,
u2, v2) + APPLY_MATRIX (matrix, 2, y3, u3,
v3) + APPLY_MATRIX (matrix, 2, y4, u4, v4)) / 4, 0, 255);
dest_y_idx += 2;
src_y_idx += 2;
dest_uv_idx++;
}
/* 2.3. Now copy the last pixel if one exists and blend it
* with the background because we only fill part of
* the macro pixel. In case this is the last pixel of
* the destination we will a larger part. */
if (j == w - 1 && j == dest_width - 1) {
y1 = srcY[src_y_idx];
y2 = srcY2[src_y_idx];
u1 = srcU[src_uv_idx / 2];
u2 = srcU2[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
v2 = srcV2[src_uv_idx / 2];
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY2[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destU[dest_uv_idx] = CLAMP (
(APPLY_MATRIX (matrix, 1, y1, u1, v1) + APPLY_MATRIX (matrix, 2, y2,
u2, v2)) / 2, 0, 255);
destV[dest_uv_idx] = CLAMP (
(APPLY_MATRIX (matrix, 1, y1, u1, v1) + APPLY_MATRIX (matrix, 2, y2,
u2, v2)) / 2, 0, 255);
} else if (j == w - 1) {
y1 = srcY[src_y_idx];
y2 = srcY2[src_y_idx];
u1 = srcU[src_uv_idx / 2];
u2 = srcU2[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
v2 = srcV2[src_uv_idx / 2];
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY2[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destU[dest_uv_idx] = CLAMP (
(2 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1) + APPLY_MATRIX (matrix, 2, y2, u2, v2)) / 4, 0, 255);
destV[dest_uv_idx] = CLAMP (
(2 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1) + APPLY_MATRIX (matrix, 2, y2, u2, v2)) / 4, 0, 255);
}
destY += 2 * dest_strideY;
destY2 += 2 * dest_strideY;
destU += dest_strideUV;
destV += dest_strideUV;
srcY += 2 * src_strideY;
srcY2 += 2 * src_strideY;
src_y += 2;
srcU += src_strideUV;
srcV += src_strideUV;
}
/* 3. Handle the last scanline if one exists. This again
* doesn't start at macro pixel boundary but should
* only fill the upper part of the macro pixels. */
if (i == h - 1 && i == dest_height - 1) {
/* 3.1. Handle the first destination pixel if it doesn't
* start at the macro pixel boundary, i.e. blend with
* the background! */
if (dest_x % 2 == 1) {
y1 = srcY[0];
u1 = srcU[0];
v1 = srcV[0];
destY[0] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[0] =
CLAMP ((destU[0] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 2, 0, 255);
destV[0] =
CLAMP ((destV[0] + APPLY_MATRIX (matrix, 2, y1, u1, v1)) / 2, 0, 255);
j = dest_x + 1;
src_y_idx = dest_y_idx = dest_uv_idx = 1;
src_uv_idx = (src_x % 2) + 1;
} else {
j = dest_x;
src_y_idx = dest_y_idx = dest_uv_idx = 0;
src_uv_idx = (src_x % 2);
}
/* 3.2. Copy all macro pixels from the source to the destination
* but blend with the background because we're only filling
* the upper part of the macro pixels. */
for (; j < w - 1; j += 2) {
y1 = srcY[src_y_idx];
y2 = srcY[src_y_idx + 1];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
src_uv_idx++;
u2 = srcU[src_uv_idx / 2];
v2 = srcV[src_uv_idx / 2];
src_uv_idx++;
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY[dest_y_idx + 1] =
CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destU[dest_uv_idx] = CLAMP (
(2 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1) + APPLY_MATRIX (matrix, 1, y2, u2, v2)) / 4, 0, 255);
destV[dest_uv_idx] = CLAMP (
(2 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 2, y1, u1,
v1) + APPLY_MATRIX (matrix, 2, y2, u2, v2)) / 4, 0, 255);
dest_y_idx += 2;
src_y_idx += 2;
dest_uv_idx++;
}
/* 3.3. Now copy the last pixel if one exists and blend it
* with the background because we only fill part of
* the macro pixel. In case this is the last pixel of
* the destination we will a larger part. */
if (j == w - 1 && j == dest_width - 1) {
y1 = srcY[src_y_idx];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[dest_uv_idx] = CLAMP (
(destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 2, 0,
255);
destV[dest_uv_idx] =
CLAMP ((destV[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1)) / 2, 0, 255);
} else if (j == w - 1) {
y1 = srcY[src_y_idx];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[dest_uv_idx] = CLAMP (
(3 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 4,
0, 255);
destV[dest_uv_idx] =
CLAMP ((3 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1)) / 4, 0, 255);
}
} else if (i == h - 1) {
/* 3.1. Handle the first destination pixel if it doesn't
* start at the macro pixel boundary, i.e. blend with
* the background! */
if (dest_x % 2 == 1) {
y1 = srcY[0];
u1 = srcU[0];
v1 = srcV[0];
destY[0] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[0] =
CLAMP ((3 * destU[0] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 4, 0,
255);
destV[0] =
CLAMP ((3 * destV[0] + APPLY_MATRIX (matrix, 2, y1, u1, v1)) / 4, 0,
255);
j = dest_x + 1;
src_y_idx = dest_y_idx = dest_uv_idx = 1;
src_uv_idx = (src_x % 2) + 1;
} else {
j = dest_x;
src_y_idx = dest_y_idx = dest_uv_idx = 0;
src_uv_idx = (src_x % 2);
}
/* 3.2. Copy all macro pixels from the source to the destination
* but blend with the background because we're only filling
* the upper part of the macro pixels. */
for (; j < w - 1; j += 2) {
y1 = srcY[src_y_idx];
y2 = srcY[src_y_idx + 1];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
src_uv_idx++;
u2 = srcU[src_uv_idx / 2];
v2 = srcV[src_uv_idx / 2];
src_uv_idx++;
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destY[dest_y_idx + 1] =
CLAMP (APPLY_MATRIX (matrix, 0, y2, u2, v2), 0, 255);
destU[dest_uv_idx] = CLAMP (
(2 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1) + APPLY_MATRIX (matrix, 1, y2, u2, v2)) / 4, 0, 255);
destV[dest_uv_idx] = CLAMP (
(2 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 2, y1, u1,
v1) + APPLY_MATRIX (matrix, 2, y2, u2, v2)) / 4, 0, 255);
dest_y_idx += 2;
src_y_idx += 2;
dest_uv_idx++;
}
/* 3.3. Now copy the last pixel if one exists and blend it
* with the background because we only fill part of
* the macro pixel. In case this is the last pixel of
* the destination we will a larger part. */
if (j == w - 1 && j == dest_width - 1) {
y1 = srcY[src_y_idx];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[dest_uv_idx] = CLAMP (
(destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 2, 0,
255);
destV[dest_uv_idx] =
CLAMP ((destV[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1)) / 2, 0, 255);
} else if (j == w - 1) {
y1 = srcY[src_y_idx];
u1 = srcU[src_uv_idx / 2];
v1 = srcV[src_uv_idx / 2];
destY[dest_y_idx] = CLAMP (APPLY_MATRIX (matrix, 0, y1, u1, v1), 0, 255);
destU[dest_uv_idx] = CLAMP (
(3 * destU[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1, v1)) / 4,
0, 255);
destV[dest_uv_idx] =
CLAMP ((3 * destV[dest_uv_idx] + APPLY_MATRIX (matrix, 1, y1, u1,
v1)) / 4, 0, 255);
}
}
}