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tweak styling

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tj committed Jan 13, 2012
1 parent a50ffa1 commit a4ed9c5edd9c57f47de8643cb6b9ead673d29757
Showing with 38 additions and 40 deletions.
  1. +1 −3 src/Canvas.cc
  2. +37 −37 src/JPEGStream.h
View
@@ -318,9 +318,7 @@ Canvas::StreamJPEGSync(const Arguments &args) {
TryCatch try_catch;
write_to_jpeg_stream(canvas->surface(), args[0]->NumberValue(), args[1]->NumberValue(), &closure);
if (try_catch.HasCaught()) {
return try_catch.ReThrow();
}
if (try_catch.HasCaught()) return try_catch.ReThrow();
return Undefined();
}
View
@@ -29,13 +29,13 @@ init_closure_destination(j_compress_ptr cinfo){
boolean
empty_closure_output_buffer(j_compress_ptr cinfo){
closure_destination_mgr * dest = (closure_destination_mgr *) cinfo->dest;
closure_destination_mgr *dest = (closure_destination_mgr *) cinfo->dest;
Local<Buffer> buf = Buffer::New(dest->bufsize);
memcpy(Buffer::Data(buf->handle_), dest->buffer, dest->bufsize);
Local<Value> argv[3] = {
Local<Value>::New(Null()),
Local<Value>::New(buf->handle_),
Integer::New(dest->bufsize)
Local<Value>::New(Null())
, Local<Value>::New(buf->handle_)
, Integer::New(dest->bufsize)
};
dest->closure->fn->Call(Context::GetCurrent()->Global(), 3, argv);
cinfo->dest->next_output_byte = dest->buffer;
@@ -45,23 +45,27 @@ empty_closure_output_buffer(j_compress_ptr cinfo){
void
term_closure_destination(j_compress_ptr cinfo){
closure_destination_mgr * dest = (closure_destination_mgr *) cinfo->dest;
closure_destination_mgr *dest = (closure_destination_mgr *) cinfo->dest;
/* emit remaining data */
size_t remaining = dest->bufsize - cinfo->dest->free_in_buffer;
Local<Buffer> buf = Buffer::New(remaining);
memcpy(Buffer::Data(buf->handle_), dest->buffer, remaining);
Local<Value> data_argv[3] = {
Local<Value>::New(Null()),
Local<Value>::New(buf->handle_),
Integer::New(remaining)
Local<Value>::New(Null())
, Local<Value>::New(buf->handle_)
, Integer::New(remaining)
};
dest->closure->fn->Call(Context::GetCurrent()->Global(), 3, data_argv);
/* emit 'end' */
// emit "end"
Local<Value> end_argv[3] = {
Local<Value>::New(Null()),
Local<Value>::New(Null()),
Integer::New(0)
Local<Value>::New(Null())
, Local<Value>::New(Null())
, Integer::New(0)
};
dest->closure->fn->Call(Context::GetCurrent()->Global(), 3, end_argv);
}
@@ -72,10 +76,10 @@ jpeg_closure_dest(j_compress_ptr cinfo, closure_t * closure, int bufsize){
/* The destination object is made permanent so that multiple JPEG images
* can be written to the same buffer without re-executing jpeg_mem_dest.
*/
if (cinfo->dest == NULL) { /* first time for this JPEG object? */
if (cinfo->dest == NULL) { /* first time for this JPEG object? */
cinfo->dest = (struct jpeg_destination_mgr *)
(*cinfo->mem->alloc_small) ((j_common_ptr) cinfo, JPOOL_PERMANENT,
sizeof(closure_destination_mgr));
sizeof(closure_destination_mgr));
}
dest = (closure_destination_mgr *) cinfo->dest;
@@ -93,33 +97,29 @@ jpeg_closure_dest(j_compress_ptr cinfo, closure_t * closure, int bufsize){
}
void
write_to_jpeg_stream(cairo_surface_t *surface, int bufsize, int quality, closure_t * closure){
/*
libjs code adapted from the Cairo R graphics project:
http://www.rforge.net/Cairo/
*/
write_to_jpeg_stream(cairo_surface_t *surface, int bufsize, int quality, closure_t *closure){
int w = cairo_image_surface_get_width(surface);
int h = cairo_image_surface_get_height(surface);
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
JSAMPROW slr;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
cinfo.in_color_space = JCS_RGB;
cinfo.input_components = 3;
cinfo.image_width = w;
cinfo.image_height = h;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, (quality<25)?0:1);
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
JSAMPROW slr;
cinfo.err = jpeg_std_error(&jerr);
jpeg_create_compress(&cinfo);
cinfo.in_color_space = JCS_RGB;
cinfo.input_components = 3;
cinfo.image_width = w;
cinfo.image_height = h;
jpeg_set_defaults(&cinfo);
jpeg_set_quality(&cinfo, quality, (quality<25)?0:1);
jpeg_closure_dest(&cinfo, closure, bufsize);
jpeg_start_compress(&cinfo, TRUE);
jpeg_start_compress(&cinfo, TRUE);
unsigned char *dst;
unsigned int *src = (unsigned int*)cairo_image_surface_get_data(surface);
unsigned int *src = (unsigned int *) cairo_image_surface_get_data(surface);
int sl = 0;
dst = (unsigned char*) malloc(w*3);
while (sl<h) {
dst = (unsigned char *) malloc(w * 3);
while (sl < h) {
unsigned char *dp = dst;
int x = 0;
while (x < w) {
@@ -135,8 +135,8 @@ write_to_jpeg_stream(cairo_surface_t *surface, int bufsize, int quality, closure
sl++;
}
free(dst);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
jpeg_finish_compress(&cinfo);
jpeg_destroy_compress(&cinfo);
}
#endif

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