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lavfi/drawutils: support NV12 and NV21

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This commit is contained in:
Rodger Combs
2016-05-09 20:52:06 -05:00
parent b2244fa0a6
commit d645182227
2 changed files with 18 additions and 17 deletions
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33
libavfilter/drawutils.c
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@ -205,8 +205,6 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
return AVERROR(ENOSYS);
nb_planes = FFMAX(nb_planes, c->plane + 1);
}
if ((desc->log2_chroma_w || desc->log2_chroma_h) && nb_planes < 3)
return AVERROR(ENOSYS); /* exclude NV12 and NV21 */
memset(draw, 0, sizeof(*draw));
draw->desc = desc;
draw->format = format;
@ -214,7 +212,7 @@ int ff_draw_init(FFDrawContext *draw, enum AVPixelFormat format, unsigned flags)
memcpy(draw->pixelstep, pixelstep, sizeof(draw->pixelstep));
draw->hsub[1] = draw->hsub[2] = draw->hsub_max = desc->log2_chroma_w;
draw->vsub[1] = draw->vsub[2] = draw->vsub_max = desc->log2_chroma_h;
for (i = 0; i < ((desc->nb_components - 1) | 1); i++)
for (i = 0; i < (desc->nb_components - !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA)); i++)
draw->comp_mask[desc->comp[i].plane] |=
1 << desc->comp[i].offset;
return 0;
@ -243,20 +241,21 @@ void ff_draw_color(FFDrawContext *draw, FFDrawColor *color, const uint8_t rgba[4
color->comp[rgba_map[i]].u16[0] = color->comp[rgba_map[i]].u8[0] << (draw->desc->comp[rgba_map[i]].depth - 8);
}
}
} else if (draw->nb_planes == 3 || draw->nb_planes == 4) {
} else if (draw->nb_planes >= 2) {
/* assume YUV */
color->comp[0].u8[0] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
color->comp[1].u8[0] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
color->comp[2].u8[0] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
const AVPixFmtDescriptor *desc = draw->desc;
color->comp[desc->comp[0].plane].u8[desc->comp[0].offset] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
color->comp[desc->comp[1].plane].u8[desc->comp[1].offset] = RGB_TO_U_CCIR(rgba[0], rgba[1], rgba[2], 0);
color->comp[desc->comp[2].plane].u8[desc->comp[2].offset] = RGB_TO_V_CCIR(rgba[0], rgba[1], rgba[2], 0);
color->comp[3].u8[0] = rgba[3];
if (draw->desc->comp[0].depth > 8)
color->comp[0].u16[0] = color->comp[0].u8[0] << (draw->desc->comp[0].depth - 8);
if (draw->desc->comp[1].depth > 8)
color->comp[1].u16[0] = color->comp[1].u8[0] << (draw->desc->comp[1].depth - 8);
if (draw->desc->comp[2].depth > 8)
color->comp[2].u16[0] = color->comp[2].u8[0] << (draw->desc->comp[2].depth - 8);
if (draw->desc->comp[3].depth > 8)
color->comp[3].u16[0] = color->comp[3].u8[0] << (draw->desc->comp[3].depth - 8);
#define EXPAND(compn) \
if (desc->comp[compn].depth > 8) \
color->comp[desc->comp[compn].plane].u16[desc->comp[compn].offset] = \
color->comp[desc->comp[compn].plane].u8[desc->comp[compn].offset] << (draw->desc->comp[compn].depth - 8)
EXPAND(3);
EXPAND(2);
EXPAND(1);
EXPAND(0);
} else if (draw->format == AV_PIX_FMT_GRAY8 || draw->format == AV_PIX_FMT_GRAY8A) {
color->comp[0].u8[0] = RGB_TO_Y_CCIR(rgba[0], rgba[1], rgba[2]);
color->comp[1].u8[0] = rgba[3];
@ -450,7 +449,7 @@ void ff_blend_rectangle(FFDrawContext *draw, FFDrawColor *color,
/* 0x101 * alpha is in the [ 2 ; 0x1001] range */
alpha = 0x101 * color->rgba[3] + 0x2;
}
nb_planes = (draw->nb_planes - 1) | 1; /* eliminate alpha */
nb_planes = draw->nb_planes - !!(draw->desc->flags & AV_PIX_FMT_FLAG_ALPHA);
for (plane = 0; plane < nb_planes; plane++) {
nb_comp = draw->pixelstep[plane];
p0 = pointer_at(draw, dst, dst_linesize, plane, x0, y0);
@ -627,7 +626,7 @@ void ff_blend_mask(FFDrawContext *draw, FFDrawColor *color,
} else {
alpha = (0x101 * color->rgba[3] + 0x2) >> 8;
}
nb_planes = (draw->nb_planes - 1) | 1; /* eliminate alpha */
nb_planes = draw->nb_planes - !!(draw->desc->flags & AV_PIX_FMT_FLAG_ALPHA);
for (plane = 0; plane < nb_planes; plane++) {
nb_comp = draw->pixelstep[plane];
p0 = pointer_at(draw, dst, dst_linesize, plane, x0, y0);