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dvdspu: render to ARGB overlay instead of AYUV

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=663750
This commit is contained in:
Arnaud Vrac 2015-04-07 14:38:08 +02:00 committed by Jan Schmidt
parent 5016a73190
commit dd3e9deb2a
4 changed files with 53 additions and 35 deletions
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2
gst/dvdspu/gstdvdspu.c
View file

@ -716,7 +716,7 @@ gstspu_render_composition (GstDVDSpu * dvdspu)
gint spu_w, spu_h;
gsize size;
format = GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_YUV;
format = GST_VIDEO_OVERLAY_COMPOSITION_FORMAT_RGB;
switch (dvdspu->spu_input_type) {
case SPU_INPUT_TYPE_PGS:

15
gst/dvdspu/gstspu-common.h
View file

@ -39,19 +39,12 @@ struct SpuRect {
gint16 bottom;
};
/* Store a pre-multiplied YUV colour value */
/* Store a pre-multiplied ARGB colour value */
struct SpuColour {
#if G_BYTE_ORDER == G_LITTLE_ENDIAN
guint8 B;
guint8 G;
guint8 R;
guint8 A;
guint8 Y;
guint8 U;
guint8 V;
#else
guint8 V;
guint8 U;
guint8 Y;
guint8 A;
#endif
};
G_END_DECLS

28
gst/dvdspu/gstspu-pgs.c
View file

@ -319,9 +319,9 @@ pgs_composition_object_render (PgsCompositionObject * obj, SpuState * state,
memcpy (pix, colour, sizeof (*pix));
} else {
pix->A = colour->A;
pix->Y = colour->Y + pix->Y * inv_A / 255;
pix->U = colour->U + pix->U * inv_A / 255;
pix->V = colour->V + pix->V * inv_A / 255;
pix->R = colour->R + pix->R * inv_A / 255;
pix->G = colour->G + pix->G * inv_A / 255;
pix->B = colour->B + pix->B * inv_A / 255;
}
}
} else {
@ -511,6 +511,7 @@ parse_set_palette (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
state->pgs.palette[i].A = 0;
for (i = 0; i < n_entries; i++) {
guint8 n, Y, U, V, A;
gint R, G, B;
n = payload[0];
Y = payload[1];
U = payload[2];
@ -519,15 +520,26 @@ parse_set_palette (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
#if DUMP_FULL_PALETTE
PGS_DUMP ("Entry %3d: Y %3d U %3d V %3d A %3d ", n, Y, U, V, A);
if (((i + 1) % 2) == 0)
PGS_DUMP ("\n");
#endif
/* Convert to ARGB */
R = (298 * Y + 459 * V - 63514) >> 8;
G = (298 * Y - 55 * U - 136 * V + 19681) >> 8;
B = (298 * Y + 541 * U - 73988) >> 8;
R = CLAMP (R, 0, 255);
G = CLAMP (G, 0, 255);
B = CLAMP (B, 0, 255);
#if DUMP_FULL_PALETTE
PGS_DUMP ("Entry %3d: A %3d R %3d G %3d B %3d\n", n, A, R, G, B);
#endif
/* Premultiply the palette entries by the alpha */
state->pgs.palette[n].A = A;
state->pgs.palette[n].Y = Y * A / 255;
state->pgs.palette[n].U = U * A / 255;
state->pgs.palette[n].V = V * A / 255;
state->pgs.palette[n].R = R * A / 255;
state->pgs.palette[n].G = G * A / 255;
state->pgs.palette[n].B = B * A / 255;
payload += PGS_PALETTE_ENTRY_SIZE;
}

43
gst/dvdspu/gstspu-vobsub-render.c
View file

@ -40,29 +40,42 @@ gstspu_vobsub_recalc_palette (GstDVDSpu * dvdspu,
if (state->vobsub.current_clut[idx[0]] != 0) {
for (i = 0; i < 4; i++, dest++) {
guint32 col = state->vobsub.current_clut[idx[i]];
gint A, Y, U, V;
gint R, G, B;
/* Convert incoming 4-bit alpha to 8 bit for blending */
dest->A = (alpha[i] << 4) | alpha[i];
dest->Y = ((col >> 16) & 0xff) * dest->A / 255;
A = (alpha[i] << 4) | alpha[i];
Y = ((col >> 16) & 0xff);
/* U/V are stored as V/U in the clut words, so switch them */
dest->V = ((col >> 8) & 0xff) * dest->A / 255;
dest->U = (col & 0xff) * dest->A / 255;
V = ((col >> 8) & 0xff);
U = (col & 0xff);
R = (298 * Y + 459 * V - 63514) >> 8;
G = (298 * Y - 55 * U - 136 * V + 19681) >> 8;
B = (298 * Y + 541 * U - 73988) >> 8;
R = CLAMP (R, 0, 255);
G = CLAMP (G, 0, 255);
B = CLAMP (B, 0, 255);
dest->A = A;
dest->R = R * A / 255;
dest->G = G * A / 255;
dest->B = B * A / 255;
}
} else {
int y = 240;
int c = 255;
/* The CLUT presumably hasn't been set, so we'll just guess some
* values for the non-transparent colors (white, grey, black) */
for (i = 0; i < 4; i++, dest++) {
dest->A = (alpha[i] << 4) | alpha[i];
if (alpha[i] != 0) {
dest[0].Y = y * dest[0].A / 255;
y -= 112;
if (y < 0)
y = 0;
dest->R = dest->G = dest->B = c * dest->A / 255;
c -= 128;
if (c < 0)
c = 0;
}
dest[0].U = 128 * dest[0].A / 255;
dest[0].V = 128 * dest[0].A / 255;
}
}
}
@ -173,7 +186,7 @@ gstspu_vobsub_draw_rle_run (SpuState * state, GstVideoFrame * frame,
gint16 x, gint16 end, SpuColour * colour)
{
GST_TRACE ("Y: %d x: %d end %d %d %d %d %d",
state->vobsub.cur_Y, x, end, colour->Y, colour->U, colour->V, colour->A);
state->vobsub.cur_Y, x, end, colour->R, colour->G, colour->B, colour->A);
if (colour->A > 0) {
gint i;
@ -194,9 +207,9 @@ gstspu_vobsub_draw_rle_run (SpuState * state, GstVideoFrame * frame,
memcpy (pix, colour, sizeof (*pix));
} else {
pix->A = colour->A;
pix->Y = colour->Y + pix->Y * inv_A / 255;
pix->U = colour->U + pix->U * inv_A / 255;
pix->V = colour->V + pix->V * inv_A / 255;
pix->R = colour->R + pix->R * inv_A / 255;
pix->G = colour->G + pix->G * inv_A / 255;
pix->B = colour->B + pix->B * inv_A / 255;
}
}