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Reimplementation of set_direct_pixel_conv and document the function

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This commit is contained in:
twinaphex 2015-01-07 03:23:19 +01:00
parent 4bd347375f
commit a4a133d700
1 changed files with 58 additions and 37 deletions
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95
libretro-sdk/gfx/scaler/scaler.c
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@ -95,47 +95,68 @@ static bool allocate_frames(struct scaler_ctx *ctx)
return true;
}
/**
* set_direct_pix_conv:
* @ctx : pointer to scaler context object.
*
* Bind a pixel converter callback function to the 'direct_pixconv' function pointer
* of the scaler context object.
*
* Returns: true if a pixel converter function callback could be bound, false if not.
* If false, the function callback 'direct_pixconv' is still unbound.
**/
static bool set_direct_pix_conv(struct scaler_ctx *ctx)
{
if (ctx->in_fmt == ctx->out_fmt)
{
ctx->direct_pixconv = conv_copy;
else if (ctx->in_fmt == SCALER_FMT_0RGB1555
&& ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_0rgb1555_argb8888;
else if (ctx->in_fmt == SCALER_FMT_RGB565
&& ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_rgb565_argb8888;
else if (ctx->in_fmt == SCALER_FMT_RGB565
&& ctx->out_fmt == SCALER_FMT_BGR24)
ctx->direct_pixconv = conv_rgb565_bgr24;
else if (ctx->in_fmt == SCALER_FMT_0RGB1555
&& ctx->out_fmt == SCALER_FMT_RGB565)
ctx->direct_pixconv = conv_0rgb1555_rgb565;
else if (ctx->in_fmt == SCALER_FMT_RGB565
&& ctx->out_fmt == SCALER_FMT_0RGB1555)
ctx->direct_pixconv = conv_rgb565_0rgb1555;
else if (ctx->in_fmt == SCALER_FMT_BGR24
&& ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_bgr24_argb8888;
else if (ctx->in_fmt == SCALER_FMT_ARGB8888
&& ctx->out_fmt == SCALER_FMT_0RGB1555)
ctx->direct_pixconv = conv_argb8888_0rgb1555;
else if (ctx->in_fmt == SCALER_FMT_ARGB8888
&& ctx->out_fmt == SCALER_FMT_BGR24)
ctx->direct_pixconv = conv_argb8888_bgr24;
else if (ctx->in_fmt == SCALER_FMT_0RGB1555
&& ctx->out_fmt == SCALER_FMT_BGR24)
ctx->direct_pixconv = conv_0rgb1555_bgr24;
else if (ctx->in_fmt == SCALER_FMT_ARGB8888
&& ctx->out_fmt == SCALER_FMT_ABGR8888)
ctx->direct_pixconv = conv_argb8888_abgr8888;
else if (ctx->in_fmt == SCALER_FMT_YUYV
&& ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_yuyv_argb8888;
else if (ctx->in_fmt == SCALER_FMT_RGBA4444
&& ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_rgba4444_argb8888;
else
return true;
}
switch (ctx->in_fmt)
{
case SCALER_FMT_0RGB1555:
if (ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_0rgb1555_argb8888;
else if (ctx->out_fmt == SCALER_FMT_RGB565)
ctx->direct_pixconv = conv_0rgb1555_rgb565;
else if (ctx->out_fmt == SCALER_FMT_BGR24)
ctx->direct_pixconv = conv_0rgb1555_bgr24;
break;
case SCALER_FMT_RGB565:
if (ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_rgb565_argb8888;
else if (ctx->out_fmt == SCALER_FMT_BGR24)
ctx->direct_pixconv = conv_rgb565_bgr24;
else if (ctx->out_fmt == SCALER_FMT_0RGB1555)
ctx->direct_pixconv = conv_rgb565_0rgb1555;
break;
case SCALER_FMT_BGR24:
if (ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_bgr24_argb8888;
break;
case SCALER_FMT_ARGB8888:
if (ctx->out_fmt == SCALER_FMT_0RGB1555)
ctx->direct_pixconv = conv_argb8888_0rgb1555;
else if (ctx->out_fmt == SCALER_FMT_BGR24)
ctx->direct_pixconv = conv_argb8888_bgr24;
else if (ctx->out_fmt == SCALER_FMT_ABGR8888)
ctx->direct_pixconv = conv_argb8888_abgr8888;
break;
case SCALER_FMT_YUYV:
if (ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_yuyv_argb8888;
break;
case SCALER_FMT_RGBA4444:
if (ctx->out_fmt == SCALER_FMT_ARGB8888)
ctx->direct_pixconv = conv_rgba4444_argb8888;
break;
case SCALER_FMT_ABGR8888:
/* FIXME/TODO */
break;
}
if (!ctx->direct_pixconv)
return false;
return true;