SkJPEGWriteUtility.cpp File Reference

#include "src/encode/SkJPEGWriteUtility.h"
#include "include/core/SkStream.h"
#include "src/codec/SkJpegPriv.h"
#include <csetjmp>
#include <cstddef>
#include "jerror.h"
#include "jpeglib.h"

Go to the source code of this file.

Functions
static void	sk_init_destination (j_compress_ptr cinfo)
static boolean	sk_empty_output_buffer (j_compress_ptr cinfo)
static void	sk_term_destination (j_compress_ptr cinfo)
void	skjpeg_error_exit (j_common_ptr cinfo)

Function Documentation

sk_empty_output_buffer()

static boolean sk_empty_output_buffer ( j_compress_ptr  cinfo )

static

Definition at line 31 of file SkJPEGWriteUtility.cpp.

                                                            {
    skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
 
//  if (!dest->fStream->write(dest->fBuffer, skjpeg_destination_mgr::kBufferSize - dest->free_in_buffer))
    if (!dest->fStream->write(dest->fBuffer,
            skjpeg_destination_mgr::kBufferSize)) {
        ERREXIT(cinfo, JERR_FILE_WRITE);
        return FALSE;
    }
 
    dest->next_output_byte = dest->fBuffer;
    dest->free_in_buffer = skjpeg_destination_mgr::kBufferSize;
    return TRUE;
}

sk_init_destination()

static void sk_init_destination ( j_compress_ptr  cinfo )

static

Definition at line 24 of file SkJPEGWriteUtility.cpp.

                                                      {
    skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
 
    dest->next_output_byte = dest->fBuffer;
    dest->free_in_buffer = skjpeg_destination_mgr::kBufferSize;
}

sk_term_destination()

static void sk_term_destination ( j_compress_ptr  cinfo )

static

Definition at line 46 of file SkJPEGWriteUtility.cpp.

                                                       {
    skjpeg_destination_mgr* dest = (skjpeg_destination_mgr*)cinfo->dest;
 
    size_t size = skjpeg_destination_mgr::kBufferSize - dest->free_in_buffer;
    if (size > 0) {
        if (!dest->fStream->write(dest->fBuffer, size)) {
            ERREXIT(cinfo, JERR_FILE_WRITE);
            return;
        }
    }
 
    dest->fStream->flush();
}

skjpeg_error_exit()

void skjpeg_error_exit

(

j_common_ptr

cinfo

)

Definition at line 66 of file SkJPEGWriteUtility.cpp.

                                           {
    skjpeg_error_mgr* error = (skjpeg_error_mgr*)cinfo->err;
 
    (*error->output_message) (cinfo);
 
    /* Let the memory manager delete any temp files before we die */
    jpeg_destroy(cinfo);
 
    if (error->fStack[0] == nullptr) {
        SK_ABORT("JPEG error with no jmp_buf set.");
    }
    longjmp(*error->fStack[0], -1);
}