memoryformat: Parallelize generic path of gdk_memory_convert()

This commit is contained in:
Benjamin Otte 2024-09-02 03:17:53 +02:00 committed by Matthias Clasen
parent ffe56fe6b3
commit eb7a42bc13

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@ -1897,87 +1897,47 @@ get_fast_conversion_func (GdkMemoryFormat dest_format,
return NULL;
}
void
gdk_memory_convert (guchar *dest_data,
gsize dest_stride,
GdkMemoryFormat dest_format,
GdkColorState *dest_cs,
const guchar *src_data,
gsize src_stride,
GdkMemoryFormat src_format,
GdkColorState *src_cs,
gsize width,
gsize height)
typedef struct _MemoryConvert MemoryConvert;
struct _MemoryConvert
{
const GdkMemoryFormatDescription *dest_desc = &memory_formats[dest_format];
const GdkMemoryFormatDescription *src_desc = &memory_formats[src_format];
guchar *dest_data;
gsize dest_stride;
GdkMemoryFormat dest_format;
GdkColorState *dest_cs;
const guchar *src_data;
gsize src_stride;
GdkMemoryFormat src_format;
GdkColorState *src_cs;
gsize width;
gsize height;
/* atomic */ int rows_done;
};
static void
gdk_memory_convert_generic (gpointer data)
{
MemoryConvert *mc = data;
const GdkMemoryFormatDescription *dest_desc = &memory_formats[mc->dest_format];
const GdkMemoryFormatDescription *src_desc = &memory_formats[mc->src_format];
float (*tmp)[4];
gsize y;
GdkFloatColorConvert convert_func = NULL;
GdkFloatColorConvert convert_func2 = NULL;
gboolean needs_premultiply, needs_unpremultiply;
gsize y, n;
g_assert (dest_format < GDK_MEMORY_N_FORMATS);
g_assert (src_format < GDK_MEMORY_N_FORMATS);
/* We don't allow overlap here. If you want to do in-place color state conversions,
* use gdk_memory_convert_color_state.
*/
g_assert (dest_data + gdk_memory_format_min_buffer_size (dest_format, dest_stride, width, height) <= src_data ||
src_data + gdk_memory_format_min_buffer_size (src_format, src_stride, width, height) <= dest_data);
if (src_format == dest_format && gdk_color_state_equal (dest_cs, src_cs))
{
gsize bytes_per_row = src_desc->bytes_per_pixel * width;
if (bytes_per_row == src_stride && bytes_per_row == dest_stride)
{
memcpy (dest_data, src_data, bytes_per_row * height);
}
else
{
for (y = 0; y < height; y++)
{
memcpy (dest_data, src_data, bytes_per_row);
src_data += src_stride;
dest_data += dest_stride;
}
}
return;
}
if (!gdk_color_state_equal (dest_cs, src_cs))
{
convert_func = gdk_color_state_get_convert_to (src_cs, dest_cs);
convert_func = gdk_color_state_get_convert_to (mc->src_cs, mc->dest_cs);
if (!convert_func)
convert_func2 = gdk_color_state_get_convert_from (dest_cs, src_cs);
convert_func2 = gdk_color_state_get_convert_from (mc->dest_cs, mc->src_cs);
if (!convert_func && !convert_func2)
{
GdkColorState *connection = GDK_COLOR_STATE_REC2100_LINEAR;
convert_func = gdk_color_state_get_convert_to (src_cs, connection);
convert_func2 = gdk_color_state_get_convert_from (dest_cs, connection);
convert_func = gdk_color_state_get_convert_to (mc->src_cs, connection);
convert_func2 = gdk_color_state_get_convert_from (mc->dest_cs, connection);
}
}
else
{
FastConversionFunc func;
func = get_fast_conversion_func (dest_format, src_format);
if (func != NULL)
{
for (y = 0; y < height; y++)
{
func (dest_data, src_data, width);
src_data += src_stride;
dest_data += dest_stride;
}
return;
}
}
tmp = g_malloc (sizeof (*tmp) * width);
if (convert_func)
{
@ -1990,31 +1950,115 @@ gdk_memory_convert (guchar *dest_data,
needs_premultiply = src_desc->alpha == GDK_MEMORY_ALPHA_STRAIGHT && dest_desc->alpha != GDK_MEMORY_ALPHA_STRAIGHT;
}
for (y = 0; y < height; y++)
tmp = g_malloc (sizeof (*tmp) * mc->width);
n = 1;
for (y = g_atomic_int_add (&mc->rows_done, n);
y < mc->height;
y = g_atomic_int_add (&mc->rows_done, n))
{
src_desc->to_float (tmp, src_data, width);
const guchar *src_data = mc->src_data + y * mc->src_stride;
guchar *dest_data = mc->dest_data + y * mc->dest_stride;
src_desc->to_float (tmp, src_data, mc->width);
if (needs_unpremultiply)
unpremultiply (tmp, width);
unpremultiply (tmp, mc->width);
if (convert_func)
convert_func (src_cs, tmp, width);
convert_func (mc->src_cs, tmp, mc->width);
if (convert_func2)
convert_func2 (dest_cs, tmp, width);
convert_func2 (mc->dest_cs, tmp, mc->width);
if (needs_premultiply)
premultiply (tmp, width);
premultiply (tmp, mc->width);
dest_desc->from_float (dest_data, tmp, width);
src_data += src_stride;
dest_data += dest_stride;
dest_desc->from_float (dest_data, tmp, mc->width);
}
g_free (tmp);
}
void
gdk_memory_convert (guchar *dest_data,
gsize dest_stride,
GdkMemoryFormat dest_format,
GdkColorState *dest_cs,
const guchar *src_data,
gsize src_stride,
GdkMemoryFormat src_format,
GdkColorState *src_cs,
gsize width,
gsize height)
{
MemoryConvert mc = {
.dest_data = dest_data,
.dest_stride = dest_stride,
.dest_format = dest_format,
.dest_cs = dest_cs,
.src_data = src_data,
.src_stride = src_stride,
.src_format = src_format,
.src_cs = src_cs,
.width = width,
.height = height,
};
g_assert (dest_format < GDK_MEMORY_N_FORMATS);
g_assert (src_format < GDK_MEMORY_N_FORMATS);
/* We don't allow overlap here. If you want to do in-place color state conversions,
* use gdk_memory_convert_color_state.
*/
g_assert (dest_data + gdk_memory_format_min_buffer_size (dest_format, dest_stride, width, height) <= src_data ||
src_data + gdk_memory_format_min_buffer_size (src_format, src_stride, width, height) <= dest_data);
if (src_format == dest_format && gdk_color_state_equal (dest_cs, src_cs))
{
const GdkMemoryFormatDescription *src_desc = &memory_formats[src_format];
gsize bytes_per_row = src_desc->bytes_per_pixel * width;
if (bytes_per_row == src_stride && bytes_per_row == dest_stride)
{
memcpy (dest_data, src_data, bytes_per_row * height);
}
else
{
gsize y;
for (y = 0; y < height; y++)
{
memcpy (dest_data, src_data, bytes_per_row);
src_data += src_stride;
dest_data += dest_stride;
}
}
return;
}
if (gdk_color_state_equal (dest_cs, src_cs))
{
FastConversionFunc func;
func = get_fast_conversion_func (dest_format, src_format);
if (func != NULL)
{
gsize y;
for (y = 0; y < height; y++)
{
func (dest_data, src_data, width);
src_data += src_stride;
dest_data += dest_stride;
}
return;
}
}
gdk_parallel_task_run (gdk_memory_convert_generic, &mc);
}
static const guchar srgb_lookup[] = {
0, 12, 21, 28, 33, 38, 42, 46, 49, 52, 55, 58, 61, 63, 66, 68,
70, 73, 75, 77, 79, 81, 82, 84, 86, 88, 89, 91, 93, 94, 96, 97,