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Make scaler output truly pluggable, add an 8-bit greyscale output to

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pluginlib for use with greylib, and add source for a test scaled bmp
viewer using greylib.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19593 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andrew Mahone 2008-12-26 07:05:13 +00:00
parent f7fa7e5ad5
commit 9058620849
17 changed files with 88 additions and 42 deletions
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25
apps/recorder/resize.c
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@ -114,23 +114,6 @@ int recalc_dimension(struct dim *dst, struct dim *src)
return false; \
}
/* struct which containers various parameters shared between vertical scaler,
horizontal scaler, and row output
*/
struct scaler_context {
uint32_t divisor;
uint32_t round;
struct bitmap *bm;
struct dim *src;
unsigned char *buf;
bool dither;
int len;
void *args;
struct img_part* (*store_part)(void *);
void (*output_row)(uint32_t,void*,struct scaler_context*);
bool (*h_scaler)(void*,struct scaler_context*, bool);
};
/* Set up rounding and scale factors for horizontal area scaler */
static inline void scale_h_area_setup(struct scaler_context *ctx)
{
@ -610,6 +593,7 @@ void output_row_native(uint32_t row, void * row_in, struct scaler_context *ctx)
int resize_on_load(struct bitmap *bm, bool dither, struct dim *src,
struct rowset *rset, unsigned char *buf, unsigned int len,
const struct custom_format *format,
struct img_part* (*store_part)(void *args),
void *args)
{
@ -669,7 +653,10 @@ int resize_on_load(struct bitmap *bm, bool dither, struct dim *src,
ctx.bm = bm;
ctx.src = src;
ctx.dither = dither;
ctx.output_row = output_row_native;
if (format)
ctx.output_row = format->output_row;
else
ctx.output_row = output_row_native;
#ifdef HAVE_UPSCALER
if (sw > dw)
{
@ -693,5 +680,5 @@ int resize_on_load(struct bitmap *bm, bool dither, struct dim *src,
cpu_boost(false);
if (!ret)
return 0;
return BM_SIZE(bm->width,bm->height,bm->format,0);
return 1;
}