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#include "loader_common.h"
#include <sys/mman.h>
#include <webp/decode.h>
#include <webp/demux.h>
#include <webp/encode.h>
#define DBG_PFX "LDR-webp"
int
load2(ImlibImage * im, int load_data)
{
int rc;
void *fdata;
WebPData webp_data;
WebPDemuxer *demux;
WebPIterator iter;
int frame;
rc = LOAD_FAIL;
if (im->fsize < 12)
return rc;
fdata = mmap(0, im->fsize, PROT_READ, MAP_SHARED, fileno(im->fp), 0);
if (fdata == MAP_FAILED)
return rc;
webp_data.bytes = fdata;
webp_data.size = im->fsize;
/* Init (includes signature check) */
demux = WebPDemux(&webp_data);
if (!demux)
goto quit;
frame = 1;
if (im->frame_num > 0)
{
frame = im->frame_num;
im->frame_count = WebPDemuxGetI(demux, WEBP_FF_FRAME_COUNT);
if (im->frame_count > 1)
im->frame_flags |= FF_IMAGE_ANIMATED;
im->canvas_w = WebPDemuxGetI(demux, WEBP_FF_CANVAS_WIDTH);
im->canvas_h = WebPDemuxGetI(demux, WEBP_FF_CANVAS_HEIGHT);
D("Canvas WxH=%dx%d frames=%d\n",
im->canvas_w, im->canvas_h, im->frame_count);
if (frame > 1 && frame > im->frame_count)
goto quit;
}
if (!WebPDemuxGetFrame(demux, frame, &iter))
goto quit;
WebPDemuxReleaseIterator(&iter);
im->w = iter.width;
im->h = iter.height;
im->frame_x = iter.x_offset;
im->frame_y = iter.y_offset;
im->frame_delay = iter.duration;
D("Canvas WxH=%dx%d frame=%d/%d X,Y=%d,%d WxH=%dx%d alpha=%d T=%d dm=%d co=%d bl=%d\n", //
im->canvas_w, im->canvas_h, iter.frame_num, im->frame_count,
im->frame_x, im->frame_y, im->w, im->h, iter.has_alpha,
im->frame_delay, iter.dispose_method, iter.complete, iter.blend_method);
if (!IMAGE_DIMENSIONS_OK(im->w, im->h))
goto quit;
UPDATE_FLAG(im->flags, F_HAS_ALPHA, iter.has_alpha);
if (!load_data)
{
rc = LOAD_SUCCESS;
goto quit;
}
/* Load data */
if (!__imlib_AllocateData(im))
goto quit;
if (WebPDecodeBGRAInto
(iter.fragment.bytes, iter.fragment.size, (uint8_t *) im->data,
sizeof(DATA32) * im->w * im->h, im->w * 4) == NULL)
goto quit;
if (im->lc)
__imlib_LoadProgress(im, im->frame_x, im->frame_y, im->w, im->h);
rc = LOAD_SUCCESS;
quit:
if (rc <= 0)
__imlib_FreeData(im);
if (demux)
WebPDemuxDelete(demux);
if (fdata != MAP_FAILED)
munmap(fdata, im->fsize);
return rc;
}
char
save(ImlibImage * im, ImlibProgressFunction progress, char progress_granularity)
{
FILE *f;
int rc;
ImlibImageTag *quality_tag;
float quality;
uint8_t *fdata;
size_t encoded_size;
f = fopen(im->real_file, "wb");
if (!f)
return LOAD_FAIL;
rc = LOAD_FAIL;
fdata = NULL;
quality = 75;
quality_tag = __imlib_GetTag(im, "quality");
if (quality_tag)
{
quality = quality_tag->val;
if (quality < 0)
{
fprintf(stderr,
"Warning: 'quality' setting %f too low for WebP, using 0\n",
quality);
quality = 0;
}
if (quality > 100)
{
fprintf(stderr,
"Warning, 'quality' setting %f too high for WebP, using 100\n",
quality);
quality = 100;
}
}
encoded_size = WebPEncodeBGRA((uint8_t *) im->data, im->w, im->h,
im->w * 4, quality, &fdata);
if (fwrite(fdata, encoded_size, 1, f) != encoded_size)
goto quit;
rc = LOAD_SUCCESS;
quit:
if (fdata)
WebPFree(fdata);
fclose(f);
return rc;
}
void
formats(ImlibLoader * l)
{
static const char *const list_formats[] = { "webp" };
__imlib_LoaderSetFormats(l, list_formats, ARRAY_SIZE(list_formats));
}
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