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Unified Diff: third_party/libjpeg_turbo/turbojpeg.c

Issue 7554002: Updates libjpeg-turbo to 1.1.90 (r677) (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/deps/
Patch Set: '' Created 9 years, 5 months ago
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Index: third_party/libjpeg_turbo/turbojpeg.c
===================================================================
--- third_party/libjpeg_turbo/turbojpeg.c (revision 0)
+++ third_party/libjpeg_turbo/turbojpeg.c (revision 0)
@@ -0,0 +1,1044 @@
+/*
+ * Copyright (C)2009-2011 D. R. Commander. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * - Neither the name of the libjpeg-turbo Project nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* TurboJPEG/OSS: this implements the TurboJPEG API using libjpeg-turbo */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <jinclude.h>
+#define JPEG_INTERNALS
+#include <jpeglib.h>
+#include <jerror.h>
+#include <setjmp.h>
+#include "./turbojpeg.h"
+#include "./tjutil.h"
+#include "transupp.h"
+
+extern void jpeg_mem_dest_tj(j_compress_ptr, unsigned char **,
+ unsigned long *, boolean);
+extern void jpeg_mem_src_tj(j_decompress_ptr, unsigned char *, unsigned long);
+
+#define PAD(v, p) ((v+(p)-1)&(~((p)-1)))
+
+
+/* Error handling (based on example in example.c) */
+
+static char errStr[JMSG_LENGTH_MAX]="No error";
+
+struct my_error_mgr
+{
+ struct jpeg_error_mgr pub;
+ jmp_buf setjmp_buffer;
+};
+typedef struct my_error_mgr *my_error_ptr;
+
+static void my_error_exit(j_common_ptr cinfo)
+{
+ my_error_ptr myerr=(my_error_ptr)cinfo->err;
+ (*cinfo->err->output_message)(cinfo);
+ longjmp(myerr->setjmp_buffer, 1);
+}
+
+/* Based on output_message() in jerror.c */
+
+static void my_output_message(j_common_ptr cinfo)
+{
+ (*cinfo->err->format_message)(cinfo, errStr);
+}
+
+
+/* Global structures, macros, etc. */
+
+enum {COMPRESS=1, DECOMPRESS=2};
+
+typedef struct _tjinstance
+{
+ struct jpeg_compress_struct cinfo;
+ struct jpeg_decompress_struct dinfo;
+ struct my_error_mgr jerr;
+ int init;
+} tjinstance;
+
+static const int pixelsize[TJ_NUMSAMP]={3, 3, 3, 1, 3};
+
+static const JXFORM_CODE xformtypes[TJ_NUMXOP]=
+{
+ JXFORM_NONE, JXFORM_FLIP_H, JXFORM_FLIP_V, JXFORM_TRANSPOSE,
+ JXFORM_TRANSVERSE, JXFORM_ROT_90, JXFORM_ROT_180, JXFORM_ROT_270
+};
+
+#define NUMSF 4
+static const tjscalingfactor sf[NUMSF]={
+ {1, 1},
+ {1, 2},
+ {1, 4},
+ {1, 8}
+};
+
+#define _throw(m) {snprintf(errStr, JMSG_LENGTH_MAX, "%s", m); \
+ retval=-1; goto bailout;}
+#define getinstance(handle) tjinstance *this=(tjinstance *)handle; \
+ j_compress_ptr cinfo=NULL; j_decompress_ptr dinfo=NULL; \
+ if(!this) {snprintf(errStr, JMSG_LENGTH_MAX, "Invalid handle"); \
+ return -1;} \
+ cinfo=&this->cinfo; dinfo=&this->dinfo;
+
+static int getPixelFormat(int pixelSize, int flags)
+{
+ if(pixelSize==1) return TJPF_GRAY;
+ if(pixelSize==3)
+ {
+ if(flags&TJ_BGR) return TJPF_BGR;
+ else return TJPF_RGB;
+ }
+ if(pixelSize==4)
+ {
+ if(flags&TJ_ALPHAFIRST)
+ {
+ if(flags&TJ_BGR) return TJPF_XBGR;
+ else return TJPF_XRGB;
+ }
+ else
+ {
+ if(flags&TJ_BGR) return TJPF_BGRX;
+ else return TJPF_RGBX;
+ }
+ }
+ return -1;
+}
+
+static void setCompDefaults(struct jpeg_compress_struct *cinfo,
+ int pixelFormat, int subsamp, int jpegQual)
+{
+ switch(pixelFormat)
+ {
+ case TJPF_GRAY:
+ cinfo->in_color_space=JCS_GRAYSCALE; break;
+ #if JCS_EXTENSIONS==1
+ case TJPF_RGB:
+ cinfo->in_color_space=JCS_EXT_RGB; break;
+ case TJPF_BGR:
+ cinfo->in_color_space=JCS_EXT_BGR; break;
+ case TJPF_RGBX:
+ cinfo->in_color_space=JCS_EXT_RGBX; break;
+ case TJPF_BGRX:
+ cinfo->in_color_space=JCS_EXT_BGRX; break;
+ case TJPF_XRGB:
+ cinfo->in_color_space=JCS_EXT_XRGB; break;
+ case TJPF_XBGR:
+ cinfo->in_color_space=JCS_EXT_XBGR; break;
+ #else
+ case TJPF_RGB:
+ if(RGB_RED==0 && RGB_GREEN==1 && RGB_BLUE==2 && RGB_PIXELSIZE==3)
+ {
+ cinfo->in_color_space=JCS_RGB; break;
+ }
+ default:
+ _throw("Unsupported pixel format");
+ #endif
+ }
+
+ cinfo->input_components=tjPixelSize[pixelFormat];
+ jpeg_set_defaults(cinfo);
+ if(jpegQual>=0)
+ {
+ jpeg_set_quality(cinfo, jpegQual, TRUE);
+ if(jpegQual>=96) cinfo->dct_method=JDCT_ISLOW;
+ else cinfo->dct_method=JDCT_FASTEST;
+ }
+ if(subsamp==TJSAMP_GRAY)
+ jpeg_set_colorspace(cinfo, JCS_GRAYSCALE);
+ else
+ jpeg_set_colorspace(cinfo, JCS_YCbCr);
+
+ cinfo->comp_info[0].h_samp_factor=tjMCUWidth[subsamp]/8;
+ cinfo->comp_info[1].h_samp_factor=1;
+ cinfo->comp_info[2].h_samp_factor=1;
+ cinfo->comp_info[0].v_samp_factor=tjMCUHeight[subsamp]/8;
+ cinfo->comp_info[1].v_samp_factor=1;
+ cinfo->comp_info[2].v_samp_factor=1;
+}
+
+static void setDecompDefaults(struct jpeg_decompress_struct *dinfo,
+ int pixelFormat)
+{
+ switch(pixelFormat)
+ {
+ case TJPF_GRAY:
+ dinfo->out_color_space=JCS_GRAYSCALE; break;
+ #if JCS_EXTENSIONS==1
+ case TJPF_RGB:
+ dinfo->out_color_space=JCS_EXT_RGB; break;
+ case TJPF_BGR:
+ dinfo->out_color_space=JCS_EXT_BGR; break;
+ case TJPF_RGBX:
+ dinfo->out_color_space=JCS_EXT_RGBX; break;
+ case TJPF_BGRX:
+ dinfo->out_color_space=JCS_EXT_BGRX; break;
+ case TJPF_XRGB:
+ dinfo->out_color_space=JCS_EXT_XRGB; break;
+ case TJPF_XBGR:
+ dinfo->out_color_space=JCS_EXT_XBGR; break;
+ #else
+ case TJPF_RGB:
+ if(RGB_RED==0 && RGB_GREEN==1 && RGB_BLUE==2 && RGB_PIXELSIZE==3)
+ {
+ dinfo->out_color_space=JCS_RGB; break;
+ }
+ default:
+ _throw("Unsupported pixel format");
+ #endif
+ }
+}
+
+
+static int getSubsamp(j_decompress_ptr dinfo)
+{
+ int retval=-1, i, k;
+ for(i=0; i<NUMSUBOPT; i++)
+ {
+ if(dinfo->num_components==pixelsize[i])
+ {
+ if(dinfo->comp_info[0].h_samp_factor==tjMCUWidth[i]/8
+ && dinfo->comp_info[0].v_samp_factor==tjMCUHeight[i]/8)
+ {
+ int match=0;
+ for(k=1; k<dinfo->num_components; k++)
+ {
+ if(dinfo->comp_info[k].h_samp_factor==1
+ && dinfo->comp_info[k].v_samp_factor==1)
+ match++;
+ }
+ if(match==dinfo->num_components-1)
+ {
+ retval=i; break;
+ }
+ }
+ }
+ }
+ return retval;
+}
+
+
+/* General API functions */
+
+DLLEXPORT char* DLLCALL tjGetErrorStr(void)
+{
+ return errStr;
+}
+
+
+DLLEXPORT int DLLCALL tjDestroy(tjhandle handle)
+{
+ getinstance(handle);
+ if(setjmp(this->jerr.setjmp_buffer)) return -1;
+ if(this->init&COMPRESS) jpeg_destroy_compress(cinfo);
+ if(this->init&DECOMPRESS) jpeg_destroy_decompress(dinfo);
+ free(this);
+ return 0;
+}
+
+
+/* These are exposed mainly because Windows can't malloc() and free() across
+ DLL boundaries except when the CRT DLL is used, and we don't use the CRT DLL
+ with turbojpeg.dll for compatibility reasons. However, these functions
+ can potentially be used for other purposes by different implementations. */
+
+DLLEXPORT void DLLCALL tjFree(unsigned char *buf)
+{
+ if(buf) free(buf);
+}
+
+
+DLLEXPORT unsigned char *DLLCALL tjAlloc(int bytes)
+{
+ return (unsigned char *)malloc(bytes);
+}
+
+
+/* Compressor */
+
+static tjhandle _tjInitCompress(tjinstance *this)
+{
+ unsigned char buffer[1], *buf=buffer; unsigned long size=1;
+
+ /* This is also straight out of example.c */
+ this->cinfo.err=jpeg_std_error(&this->jerr.pub);
+ this->jerr.pub.error_exit=my_error_exit;
+ this->jerr.pub.output_message=my_output_message;
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ if(this) free(this); return NULL;
+ }
+
+ jpeg_create_compress(&this->cinfo);
+ /* Make an initial call so it will create the destination manager */
+ jpeg_mem_dest_tj(&this->cinfo, &buf, &size, 0);
+
+ this->init|=COMPRESS;
+ return (tjhandle)this;
+}
+
+DLLEXPORT tjhandle DLLCALL tjInitCompress(void)
+{
+ tjinstance *this=NULL;
+ if((this=(tjinstance *)malloc(sizeof(tjinstance)))==NULL)
+ {
+ snprintf(errStr, JMSG_LENGTH_MAX,
+ "tjInitCompress(): Memory allocation failure");
+ return NULL;
+ }
+ MEMZERO(this, sizeof(tjinstance));
+ return _tjInitCompress(this);
+}
+
+
+DLLEXPORT unsigned long DLLCALL tjBufSize(int width, int height,
+ int jpegSubsamp)
+{
+ unsigned long retval=0; int mcuw, mcuh, chromasf;
+ if(width<1 || height<1 || jpegSubsamp<0 || jpegSubsamp>=NUMSUBOPT)
+ _throw("tjBufSize(): Invalid argument");
+
+ // This allows for rare corner cases in which a JPEG image can actually be
+ // larger than the uncompressed input (we wouldn't mention it if it hadn't
+ // happened before.)
+ mcuw=tjMCUWidth[jpegSubsamp];
+ mcuh=tjMCUHeight[jpegSubsamp];
+ chromasf=jpegSubsamp==TJSAMP_GRAY? 0: 4*64/(mcuw*mcuh);
+ retval=PAD(width, mcuw) * PAD(height, mcuh) * (2 + chromasf) + 2048;
+
+ bailout:
+ return retval;
+}
+
+
+DLLEXPORT unsigned long DLLCALL TJBUFSIZE(int width, int height)
+{
+ unsigned long retval=0;
+ if(width<1 || height<1)
+ _throw("TJBUFSIZE(): Invalid argument");
+
+ // This allows for rare corner cases in which a JPEG image can actually be
+ // larger than the uncompressed input (we wouldn't mention it if it hadn't
+ // happened before.)
+ retval=PAD(width, 16) * PAD(height, 16) * 6 + 2048;
+
+ bailout:
+ return retval;
+}
+
+
+DLLEXPORT unsigned long DLLCALL tjBufSizeYUV(int width, int height,
+ int subsamp)
+{
+ unsigned long retval=0;
+ int pw, ph, cw, ch;
+ if(width<1 || height<1 || subsamp<0 || subsamp>=NUMSUBOPT)
+ _throw("tjBufSizeYUV(): Invalid argument");
+ pw=PAD(width, tjMCUWidth[subsamp]/8);
+ ph=PAD(height, tjMCUHeight[subsamp]/8);
+ cw=pw*8/tjMCUWidth[subsamp]; ch=ph*8/tjMCUHeight[subsamp];
+ retval=PAD(pw, 4)*ph + (subsamp==TJSAMP_GRAY? 0:PAD(cw, 4)*ch*2);
+
+ bailout:
+ return retval;
+}
+
+
+DLLEXPORT unsigned long DLLCALL TJBUFSIZEYUV(int width, int height,
+ int subsamp)
+{
+ return tjBufSizeYUV(width, height, subsamp);
+}
+
+
+DLLEXPORT int DLLCALL tjCompress2(tjhandle handle, unsigned char *srcBuf,
+ int width, int pitch, int height, int pixelFormat, unsigned char **jpegBuf,
+ unsigned long *jpegSize, int jpegSubsamp, int jpegQual, int flags)
+{
+ int i, retval=0, alloc=1; JSAMPROW *row_pointer=NULL;
+
+ getinstance(handle)
+ if((this->init&COMPRESS)==0)
+ _throw("tjCompress2(): Instance has not been initialized for compression");
+
+ if(srcBuf==NULL || width<=0 || pitch<0 || height<=0 || pixelFormat<0
+ || pixelFormat>=TJ_NUMPF || jpegBuf==NULL || jpegSize==NULL
+ || jpegSubsamp<0 || jpegSubsamp>=NUMSUBOPT || jpegQual<0 || jpegQual>100)
+ _throw("tjCompress2(): Invalid argument");
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1;
+ goto bailout;
+ }
+
+ if(pitch==0) pitch=width*tjPixelSize[pixelFormat];
+
+ cinfo->image_width=width;
+ cinfo->image_height=height;
+
+ if(flags&TJFLAG_FORCEMMX) putenv("JSIMD_FORCEMMX=1");
+ else if(flags&TJFLAG_FORCESSE) putenv("JSIMD_FORCESSE=1");
+ else if(flags&TJFLAG_FORCESSE2) putenv("JSIMD_FORCESSE2=1");
+
+ if(flags&TJFLAG_NOREALLOC)
+ {
+ alloc=0; *jpegSize=tjBufSize(width, height, jpegSubsamp);
+ }
+ jpeg_mem_dest_tj(cinfo, jpegBuf, jpegSize, alloc);
+ setCompDefaults(cinfo, pixelFormat, jpegSubsamp, jpegQual);
+
+ jpeg_start_compress(cinfo, TRUE);
+ if((row_pointer=(JSAMPROW *)malloc(sizeof(JSAMPROW)*height))==NULL)
+ _throw("tjCompress2(): Memory allocation failure");
+ for(i=0; i<height; i++)
+ {
+ if(flags&TJFLAG_BOTTOMUP) row_pointer[i]=&srcBuf[(height-i-1)*pitch];
+ else row_pointer[i]=&srcBuf[i*pitch];
+ }
+ while(cinfo->next_scanline<cinfo->image_height)
+ {
+ jpeg_write_scanlines(cinfo, &row_pointer[cinfo->next_scanline],
+ cinfo->image_height-cinfo->next_scanline);
+ }
+ jpeg_finish_compress(cinfo);
+
+ bailout:
+ if(cinfo->global_state>CSTATE_START) jpeg_abort_compress(cinfo);
+ if(row_pointer) free(row_pointer);
+ return retval;
+}
+
+DLLEXPORT int DLLCALL tjCompress(tjhandle handle, unsigned char *srcBuf,
+ int width, int pitch, int height, int pixelSize, unsigned char *jpegBuf,
+ unsigned long *jpegSize, int jpegSubsamp, int jpegQual, int flags)
+{
+ int retval=0; unsigned long size;
+ if(flags&TJ_YUV)
+ {
+ size=tjBufSizeYUV(width, height, jpegSubsamp);
+ retval=tjEncodeYUV2(handle, srcBuf, width, pitch, height,
+ getPixelFormat(pixelSize, flags), jpegBuf, jpegSubsamp, flags);
+ }
+ else
+ {
+ retval=tjCompress2(handle, srcBuf, width, pitch, height,
+ getPixelFormat(pixelSize, flags), &jpegBuf, &size, jpegSubsamp, jpegQual,
+ flags|TJFLAG_NOREALLOC);
+ }
+ *jpegSize=size;
+ return retval;
+}
+
+
+DLLEXPORT int DLLCALL tjEncodeYUV2(tjhandle handle, unsigned char *srcBuf,
+ int width, int pitch, int height, int pixelFormat, unsigned char *dstBuf,
+ int subsamp, int flags)
+{
+ int i, retval=0; JSAMPROW *row_pointer=NULL;
+ JSAMPLE *_tmpbuf[MAX_COMPONENTS], *_tmpbuf2[MAX_COMPONENTS];
+ JSAMPROW *tmpbuf[MAX_COMPONENTS], *tmpbuf2[MAX_COMPONENTS];
+ JSAMPROW *outbuf[MAX_COMPONENTS];
+ int row, pw, ph, cw[MAX_COMPONENTS], ch[MAX_COMPONENTS];
+ JSAMPLE *ptr=dstBuf;
+ unsigned long yuvsize=0;
+ jpeg_component_info *compptr;
+
+ getinstance(handle);
+ if((this->init&COMPRESS)==0)
+ _throw("tjEncodeYUV2(): Instance has not been initialized for compression");
+
+ for(i=0; i<MAX_COMPONENTS; i++)
+ {
+ tmpbuf[i]=NULL; _tmpbuf[i]=NULL;
+ tmpbuf2[i]=NULL; _tmpbuf2[i]=NULL; outbuf[i]=NULL;
+ }
+
+ if(srcBuf==NULL || width<=0 || pitch<0 || height<=0 || pixelFormat<0
+ || pixelFormat>=TJ_NUMPF || dstBuf==NULL || subsamp<0
+ || subsamp>=NUMSUBOPT)
+ _throw("tjEncodeYUV2(): Invalid argument");
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1;
+ goto bailout;
+ }
+
+ if(pitch==0) pitch=width*tjPixelSize[pixelFormat];
+
+ cinfo->image_width=width;
+ cinfo->image_height=height;
+
+ if(flags&TJFLAG_FORCEMMX) putenv("JSIMD_FORCEMMX=1");
+ else if(flags&TJFLAG_FORCESSE) putenv("JSIMD_FORCESSE=1");
+ else if(flags&TJFLAG_FORCESSE2) putenv("JSIMD_FORCESSE2=1");
+
+ yuvsize=tjBufSizeYUV(width, height, subsamp);
+ jpeg_mem_dest_tj(cinfo, &dstBuf, &yuvsize, 0);
+ setCompDefaults(cinfo, pixelFormat, subsamp, -1);
+
+ jpeg_start_compress(cinfo, TRUE);
+ pw=PAD(width, cinfo->max_h_samp_factor);
+ ph=PAD(height, cinfo->max_v_samp_factor);
+
+ if((row_pointer=(JSAMPROW *)malloc(sizeof(JSAMPROW)*ph))==NULL)
+ _throw("tjEncodeYUV2(): Memory allocation failure");
+ for(i=0; i<height; i++)
+ {
+ if(flags&TJFLAG_BOTTOMUP) row_pointer[i]=&srcBuf[(height-i-1)*pitch];
+ else row_pointer[i]=&srcBuf[i*pitch];
+ }
+ if(height<ph)
+ for(i=height; i<ph; i++) row_pointer[i]=row_pointer[height-1];
+
+ for(i=0; i<cinfo->num_components; i++)
+ {
+ compptr=&cinfo->comp_info[i];
+ _tmpbuf[i]=(JSAMPLE *)malloc(
+ PAD((compptr->width_in_blocks*cinfo->max_h_samp_factor*DCTSIZE)
+ /compptr->h_samp_factor, 16) * cinfo->max_v_samp_factor + 16);
+ if(!_tmpbuf[i]) _throw("tjEncodeYUV2(): Memory allocation failure");
+ tmpbuf[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*cinfo->max_v_samp_factor);
+ if(!tmpbuf[i]) _throw("tjEncodeYUV2(): Memory allocation failure");
+ for(row=0; row<cinfo->max_v_samp_factor; row++)
+ {
+ unsigned char *_tmpbuf_aligned=
+ (unsigned char *)PAD((size_t)_tmpbuf[i], 16);
+ tmpbuf[i][row]=&_tmpbuf_aligned[
+ PAD((compptr->width_in_blocks*cinfo->max_h_samp_factor*DCTSIZE)
+ /compptr->h_samp_factor, 16) * row];
+ }
+ _tmpbuf2[i]=(JSAMPLE *)malloc(PAD(compptr->width_in_blocks*DCTSIZE, 16)
+ * compptr->v_samp_factor + 16);
+ if(!_tmpbuf2[i]) _throw("tjEncodeYUV2(): Memory allocation failure");
+ tmpbuf2[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*compptr->v_samp_factor);
+ if(!tmpbuf2[i]) _throw("tjEncodeYUV2(): Memory allocation failure");
+ for(row=0; row<compptr->v_samp_factor; row++)
+ {
+ unsigned char *_tmpbuf2_aligned=
+ (unsigned char *)PAD((size_t)_tmpbuf2[i], 16);
+ tmpbuf2[i][row]=&_tmpbuf2_aligned[
+ PAD(compptr->width_in_blocks*DCTSIZE, 16) * row];
+ }
+ cw[i]=pw*compptr->h_samp_factor/cinfo->max_h_samp_factor;
+ ch[i]=ph*compptr->v_samp_factor/cinfo->max_v_samp_factor;
+ outbuf[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*ch[i]);
+ if(!outbuf[i]) _throw("tjEncodeYUV2(): Memory allocation failure");
+ for(row=0; row<ch[i]; row++)
+ {
+ outbuf[i][row]=ptr;
+ ptr+=PAD(cw[i], 4);
+ }
+ }
+ if(yuvsize!=(unsigned long)(ptr-dstBuf))
+ _throw("tjEncodeYUV2(): Generated image is not the correct size");
+
+ for(row=0; row<ph; row+=cinfo->max_v_samp_factor)
+ {
+ (*cinfo->cconvert->color_convert)(cinfo, &row_pointer[row], tmpbuf, 0,
+ cinfo->max_v_samp_factor);
+ (cinfo->downsample->downsample)(cinfo, tmpbuf, 0, tmpbuf2, 0);
+ for(i=0, compptr=cinfo->comp_info; i<cinfo->num_components; i++, compptr++)
+ jcopy_sample_rows(tmpbuf2[i], 0, outbuf[i],
+ row*compptr->v_samp_factor/cinfo->max_v_samp_factor,
+ compptr->v_samp_factor, cw[i]);
+ }
+ cinfo->next_scanline+=height;
+ jpeg_abort_compress(cinfo);
+
+ bailout:
+ if(cinfo->global_state>CSTATE_START) jpeg_abort_compress(cinfo);
+ if(row_pointer) free(row_pointer);
+ for(i=0; i<MAX_COMPONENTS; i++)
+ {
+ if(tmpbuf[i]!=NULL) free(tmpbuf[i]);
+ if(_tmpbuf[i]!=NULL) free(_tmpbuf[i]);
+ if(tmpbuf2[i]!=NULL) free(tmpbuf2[i]);
+ if(_tmpbuf2[i]!=NULL) free(_tmpbuf2[i]);
+ if(outbuf[i]!=NULL) free(outbuf[i]);
+ }
+ return retval;
+}
+
+DLLEXPORT int DLLCALL tjEncodeYUV(tjhandle handle, unsigned char *srcBuf,
+ int width, int pitch, int height, int pixelSize, unsigned char *dstBuf,
+ int subsamp, int flags)
+{
+ return tjEncodeYUV2(handle, srcBuf, width, pitch, height,
+ getPixelFormat(pixelSize, flags), dstBuf, subsamp, flags);
+}
+
+
+/* Decompressor */
+
+static tjhandle _tjInitDecompress(tjinstance *this)
+{
+ unsigned char buffer[1];
+
+ /* This is also straight out of example.c */
+ this->dinfo.err=jpeg_std_error(&this->jerr.pub);
+ this->jerr.pub.error_exit=my_error_exit;
+ this->jerr.pub.output_message=my_output_message;
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ if(this) free(this); return NULL;
+ }
+
+ jpeg_create_decompress(&this->dinfo);
+ /* Make an initial call so it will create the source manager */
+ jpeg_mem_src_tj(&this->dinfo, buffer, 1);
+
+ this->init|=DECOMPRESS;
+ return (tjhandle)this;
+}
+
+DLLEXPORT tjhandle DLLCALL tjInitDecompress(void)
+{
+ tjinstance *this;
+ if((this=(tjinstance *)malloc(sizeof(tjinstance)))==NULL)
+ {
+ snprintf(errStr, JMSG_LENGTH_MAX,
+ "tjInitDecompress(): Memory allocation failure");
+ return NULL;
+ }
+ MEMZERO(this, sizeof(tjinstance));
+ return _tjInitDecompress(this);
+}
+
+
+DLLEXPORT int DLLCALL tjDecompressHeader2(tjhandle handle,
+ unsigned char *jpegBuf, unsigned long jpegSize, int *width, int *height,
+ int *jpegSubsamp)
+{
+ int retval=0;
+
+ getinstance(handle);
+ if((this->init&DECOMPRESS)==0)
+ _throw("tjDecompressHeader2(): Instance has not been initialized for decompression");
+
+ if(jpegBuf==NULL || jpegSize<=0 || width==NULL || height==NULL
+ || jpegSubsamp==NULL)
+ _throw("tjDecompressHeader2(): Invalid argument");
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ return -1;
+ }
+
+ jpeg_mem_src_tj(dinfo, jpegBuf, jpegSize);
+ jpeg_read_header(dinfo, TRUE);
+
+ *width=dinfo->image_width;
+ *height=dinfo->image_height;
+ *jpegSubsamp=getSubsamp(dinfo);
+
+ jpeg_abort_decompress(dinfo);
+
+ if(*jpegSubsamp<0)
+ _throw("tjDecompressHeader2(): Could not determine subsampling type for JPEG image");
+ if(*width<1 || *height<1)
+ _throw("tjDecompressHeader2(): Invalid data returned in header");
+
+ bailout:
+ return retval;
+}
+
+DLLEXPORT int DLLCALL tjDecompressHeader(tjhandle handle,
+ unsigned char *jpegBuf, unsigned long jpegSize, int *width, int *height)
+{
+ int jpegSubsamp;
+ return tjDecompressHeader2(handle, jpegBuf, jpegSize, width, height,
+ &jpegSubsamp);
+}
+
+
+DLLEXPORT tjscalingfactor* DLLCALL tjGetScalingFactors(int *numscalingfactors)
+{
+ if(numscalingfactors==NULL)
+ {
+ snprintf(errStr, JMSG_LENGTH_MAX,
+ "tjGetScalingFactors(): Invalid argument");
+ return NULL;
+ }
+
+ *numscalingfactors=NUMSF;
+ return (tjscalingfactor *)sf;
+}
+
+
+DLLEXPORT int DLLCALL tjDecompress2(tjhandle handle, unsigned char *jpegBuf,
+ unsigned long jpegSize, unsigned char *dstBuf, int width, int pitch,
+ int height, int pixelFormat, int flags)
+{
+ int i, retval=0; JSAMPROW *row_pointer=NULL;
+ int jpegwidth, jpegheight, scaledw, scaledh;
+
+ getinstance(handle);
+ if((this->init&DECOMPRESS)==0)
+ _throw("tjDecompress2(): Instance has not been initialized for decompression");
+
+ if(jpegBuf==NULL || jpegSize<=0 || dstBuf==NULL || width<0 || pitch<0
+ || height<0 || pixelFormat<0 || pixelFormat>=TJ_NUMPF)
+ _throw("tjDecompress2(): Invalid argument");
+
+ if(flags&TJFLAG_FORCEMMX) putenv("JSIMD_FORCEMMX=1");
+ else if(flags&TJFLAG_FORCESSE) putenv("JSIMD_FORCESSE=1");
+ else if(flags&TJFLAG_FORCESSE2) putenv("JSIMD_FORCESSE2=1");
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1;
+ goto bailout;
+ }
+
+ jpeg_mem_src_tj(dinfo, jpegBuf, jpegSize);
+ jpeg_read_header(dinfo, TRUE);
+ setDecompDefaults(dinfo, pixelFormat);
+
+ if(flags&TJFLAG_FASTUPSAMPLE) dinfo->do_fancy_upsampling=FALSE;
+
+ jpegwidth=dinfo->image_width; jpegheight=dinfo->image_height;
+ if(width==0) width=jpegwidth;
+ if(height==0) height=jpegheight;
+ for(i=0; i<NUMSF; i++)
+ {
+ scaledw=TJSCALED(jpegwidth, sf[i]);
+ scaledh=TJSCALED(jpegheight, sf[i]);
+ if(scaledw<=width && scaledh<=height)
+ break;
+ }
+ if(scaledw>width || scaledh>height)
+ _throw("tjDecompress2(): Could not scale down to desired image dimensions");
+ width=scaledw; height=scaledh;
+ dinfo->scale_num=sf[i].num;
+ dinfo->scale_denom=sf[i].denom;
+
+ jpeg_start_decompress(dinfo);
+ if(pitch==0) pitch=dinfo->output_width*tjPixelSize[pixelFormat];
+ if((row_pointer=(JSAMPROW *)malloc(sizeof(JSAMPROW)
+ *dinfo->output_height))==NULL)
+ _throw("tjDecompress2(): Memory allocation failure");
+ for(i=0; i<(int)dinfo->output_height; i++)
+ {
+ if(flags&TJFLAG_BOTTOMUP)
+ row_pointer[i]=&dstBuf[(dinfo->output_height-i-1)*pitch];
+ else row_pointer[i]=&dstBuf[i*pitch];
+ }
+ while(dinfo->output_scanline<dinfo->output_height)
+ {
+ jpeg_read_scanlines(dinfo, &row_pointer[dinfo->output_scanline],
+ dinfo->output_height-dinfo->output_scanline);
+ }
+ jpeg_finish_decompress(dinfo);
+
+ bailout:
+ if(dinfo->global_state>DSTATE_START) jpeg_abort_decompress(dinfo);
+ if(row_pointer) free(row_pointer);
+ return retval;
+}
+
+DLLEXPORT int DLLCALL tjDecompress(tjhandle handle, unsigned char *jpegBuf,
+ unsigned long jpegSize, unsigned char *dstBuf, int width, int pitch,
+ int height, int pixelSize, int flags)
+{
+ if(flags&TJ_YUV)
+ return tjDecompressToYUV(handle, jpegBuf, jpegSize, dstBuf, flags);
+ else
+ return tjDecompress2(handle, jpegBuf, jpegSize, dstBuf, width, pitch,
+ height, getPixelFormat(pixelSize, flags), flags);
+}
+
+
+DLLEXPORT int DLLCALL tjDecompressToYUV(tjhandle handle,
+ unsigned char *jpegBuf, unsigned long jpegSize, unsigned char *dstBuf,
+ int flags)
+{
+ int i, row, retval=0; JSAMPROW *outbuf[MAX_COMPONENTS];
+ int cw[MAX_COMPONENTS], ch[MAX_COMPONENTS], iw[MAX_COMPONENTS],
+ tmpbufsize=0, usetmpbuf=0, th[MAX_COMPONENTS];
+ JSAMPLE *_tmpbuf=NULL, *ptr=dstBuf; JSAMPROW *tmpbuf[MAX_COMPONENTS];
+
+ getinstance(handle);
+ if((this->init&DECOMPRESS)==0)
+ _throw("tjDecompressToYUV(): Instance has not been initialized for decompression");
+
+ for(i=0; i<MAX_COMPONENTS; i++)
+ {
+ tmpbuf[i]=NULL; outbuf[i]=NULL;
+ }
+
+ if(jpegBuf==NULL || jpegSize<=0 || dstBuf==NULL)
+ _throw("tjDecompressToYUV(): Invalid argument");
+
+ if(flags&TJFLAG_FORCEMMX) putenv("JSIMD_FORCEMMX=1");
+ else if(flags&TJFLAG_FORCESSE) putenv("JSIMD_FORCESSE=1");
+ else if(flags&TJFLAG_FORCESSE2) putenv("JSIMD_FORCESSE2=1");
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1;
+ goto bailout;
+ }
+
+ jpeg_mem_src_tj(dinfo, jpegBuf, jpegSize);
+ jpeg_read_header(dinfo, TRUE);
+
+ for(i=0; i<dinfo->num_components; i++)
+ {
+ jpeg_component_info *compptr=&dinfo->comp_info[i];
+ int ih;
+ iw[i]=compptr->width_in_blocks*DCTSIZE;
+ ih=compptr->height_in_blocks*DCTSIZE;
+ cw[i]=PAD(dinfo->image_width, dinfo->max_h_samp_factor)
+ *compptr->h_samp_factor/dinfo->max_h_samp_factor;
+ ch[i]=PAD(dinfo->image_height, dinfo->max_v_samp_factor)
+ *compptr->v_samp_factor/dinfo->max_v_samp_factor;
+ if(iw[i]!=cw[i] || ih!=ch[i]) usetmpbuf=1;
+ th[i]=compptr->v_samp_factor*DCTSIZE;
+ tmpbufsize+=iw[i]*th[i];
+ if((outbuf[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*ch[i]))==NULL)
+ _throw("tjDecompressToYUV(): Memory allocation failure");
+ for(row=0; row<ch[i]; row++)
+ {
+ outbuf[i][row]=ptr;
+ ptr+=PAD(cw[i], 4);
+ }
+ }
+ if(usetmpbuf)
+ {
+ if((_tmpbuf=(JSAMPLE *)malloc(sizeof(JSAMPLE)*tmpbufsize))==NULL)
+ _throw("tjDecompressToYUV(): Memory allocation failure");
+ ptr=_tmpbuf;
+ for(i=0; i<dinfo->num_components; i++)
+ {
+ if((tmpbuf[i]=(JSAMPROW *)malloc(sizeof(JSAMPROW)*th[i]))==NULL)
+ _throw("tjDecompressToYUV(): Memory allocation failure");
+ for(row=0; row<th[i]; row++)
+ {
+ tmpbuf[i][row]=ptr;
+ ptr+=iw[i];
+ }
+ }
+ }
+
+ if(flags&TJFLAG_FASTUPSAMPLE) dinfo->do_fancy_upsampling=FALSE;
+ dinfo->raw_data_out=TRUE;
+
+ jpeg_start_decompress(dinfo);
+ for(row=0; row<(int)dinfo->output_height;
+ row+=dinfo->max_v_samp_factor*DCTSIZE)
+ {
+ JSAMPARRAY yuvptr[MAX_COMPONENTS];
+ int crow[MAX_COMPONENTS];
+ for(i=0; i<dinfo->num_components; i++)
+ {
+ jpeg_component_info *compptr=&dinfo->comp_info[i];
+ crow[i]=row*compptr->v_samp_factor/dinfo->max_v_samp_factor;
+ if(usetmpbuf) yuvptr[i]=tmpbuf[i];
+ else yuvptr[i]=&outbuf[i][crow[i]];
+ }
+ jpeg_read_raw_data(dinfo, yuvptr, dinfo->max_v_samp_factor*DCTSIZE);
+ if(usetmpbuf)
+ {
+ int j;
+ for(i=0; i<dinfo->num_components; i++)
+ {
+ for(j=0; j<min(th[i], ch[i]-crow[i]); j++)
+ {
+ memcpy(outbuf[i][crow[i]+j], tmpbuf[i][j], cw[i]);
+ }
+ }
+ }
+ }
+ jpeg_finish_decompress(dinfo);
+
+ bailout:
+ if(dinfo->global_state>DSTATE_START) jpeg_abort_decompress(dinfo);
+ for(i=0; i<MAX_COMPONENTS; i++)
+ {
+ if(tmpbuf[i]) free(tmpbuf[i]);
+ if(outbuf[i]) free(outbuf[i]);
+ }
+ if(_tmpbuf) free(_tmpbuf);
+ return retval;
+}
+
+
+/* Transformer */
+
+DLLEXPORT tjhandle DLLCALL tjInitTransform(void)
+{
+ tjinstance *this=NULL; tjhandle handle=NULL;
+ if((this=(tjinstance *)malloc(sizeof(tjinstance)))==NULL)
+ {
+ snprintf(errStr, JMSG_LENGTH_MAX,
+ "tjInitTransform(): Memory allocation failure");
+ return NULL;
+ }
+ MEMZERO(this, sizeof(tjinstance));
+ handle=_tjInitCompress(this);
+ if(!handle) return NULL;
+ handle=_tjInitDecompress(this);
+ return handle;
+}
+
+
+DLLEXPORT int DLLCALL tjTransform(tjhandle handle, unsigned char *jpegBuf,
+ unsigned long jpegSize, int n, unsigned char **dstBufs,
+ unsigned long *dstSizes, tjtransform *t, int flags)
+{
+ jpeg_transform_info *xinfo=NULL;
+ jvirt_barray_ptr *srccoefs, *dstcoefs;
+ int retval=0, i, jpegSubsamp;
+
+ getinstance(handle);
+ if((this->init&COMPRESS)==0 || (this->init&DECOMPRESS)==0)
+ _throw("tjTransform(): Instance has not been initialized for transformation");
+
+ if(jpegBuf==NULL || jpegSize<=0 || n<1 || dstBufs==NULL || dstSizes==NULL
+ || t==NULL || flags<0)
+ _throw("tjTransform(): Invalid argument");
+
+ if(flags&TJFLAG_FORCEMMX) putenv("JSIMD_FORCEMMX=1");
+ else if(flags&TJFLAG_FORCESSE) putenv("JSIMD_FORCESSE=1");
+ else if(flags&TJFLAG_FORCESSE2) putenv("JSIMD_FORCESSE2=1");
+
+ if(setjmp(this->jerr.setjmp_buffer))
+ {
+ /* If we get here, the JPEG code has signaled an error. */
+ retval=-1;
+ goto bailout;
+ }
+
+ jpeg_mem_src_tj(dinfo, jpegBuf, jpegSize);
+
+ if((xinfo=(jpeg_transform_info *)malloc(sizeof(jpeg_transform_info)*n))
+ ==NULL)
+ _throw("tjTransform(): Memory allocation failure");
+ MEMZERO(xinfo, sizeof(jpeg_transform_info)*n);
+
+ for(i=0; i<n; i++)
+ {
+ xinfo[i].transform=xformtypes[t[i].op];
+ xinfo[i].perfect=(t[i].options&TJXOPT_PERFECT)? 1:0;
+ xinfo[i].trim=(t[i].options&TJXOPT_TRIM)? 1:0;
+ xinfo[i].force_grayscale=(t[i].options&TJXOPT_GRAY)? 1:0;
+ xinfo[i].crop=(t[i].options&TJXOPT_CROP)? 1:0;
+ if(n!=1 && t[i].op==TJXOP_HFLIP) xinfo[i].slow_hflip=1;
+ else xinfo[i].slow_hflip=0;
+
+ if(xinfo[i].crop)
+ {
+ xinfo[i].crop_xoffset=t[i].r.x; xinfo[i].crop_xoffset_set=JCROP_POS;
+ xinfo[i].crop_yoffset=t[i].r.y; xinfo[i].crop_yoffset_set=JCROP_POS;
+ if(t[i].r.w!=0)
+ {
+ xinfo[i].crop_width=t[i].r.w; xinfo[i].crop_width_set=JCROP_POS;
+ }
+ else xinfo[i].crop_width=JCROP_UNSET;
+ if(t[i].r.h!=0)
+ {
+ xinfo[i].crop_height=t[i].r.h; xinfo[i].crop_height_set=JCROP_POS;
+ }
+ else xinfo[i].crop_height=JCROP_UNSET;
+ }
+ }
+
+ jcopy_markers_setup(dinfo, JCOPYOPT_ALL);
+ jpeg_read_header(dinfo, TRUE);
+ jpegSubsamp=getSubsamp(dinfo);
+ if(jpegSubsamp<0)
+ _throw("tjTransform(): Could not determine subsampling type for JPEG image");
+
+ for(i=0; i<n; i++)
+ {
+ if(!jtransform_request_workspace(dinfo, &xinfo[i]))
+ _throw("tjTransform(): Transform is not perfect");
+
+ if(xinfo[i].crop)
+ {
+ if((t[i].r.x%xinfo[i].iMCU_sample_width)!=0
+ || (t[i].r.y%xinfo[i].iMCU_sample_height)!=0)
+ {
+ snprintf(errStr, JMSG_LENGTH_MAX,
+ "To crop this JPEG image, x must be a multiple of %d\n"
+ "and y must be a multiple of %d.\n",
+ xinfo[i].iMCU_sample_width, xinfo[i].iMCU_sample_height);
+ retval=-1; goto bailout;
+ }
+ }
+ }
+
+ srccoefs=jpeg_read_coefficients(dinfo);
+
+ for(i=0; i<n; i++)
+ {
+ int w, h, alloc=1;
+ if(!xinfo[i].crop)
+ {
+ w=dinfo->image_width; h=dinfo->image_height;
+ }
+ else
+ {
+ w=xinfo[i].crop_width; h=xinfo[i].crop_height;
+ }
+ if(flags&TJFLAG_NOREALLOC)
+ {
+ alloc=0; dstSizes[i]=tjBufSize(w, h, jpegSubsamp);
+ }
+ jpeg_mem_dest_tj(cinfo, &dstBufs[i], &dstSizes[i], alloc);
+ jpeg_copy_critical_parameters(dinfo, cinfo);
+ dstcoefs=jtransform_adjust_parameters(dinfo, cinfo, srccoefs,
+ &xinfo[i]);
+ jpeg_write_coefficients(cinfo, dstcoefs);
+ jcopy_markers_execute(dinfo, cinfo, JCOPYOPT_ALL);
+ jtransform_execute_transformation(dinfo, cinfo, srccoefs,
+ &xinfo[i]);
+ jpeg_finish_compress(cinfo);
+ }
+
+ jpeg_finish_decompress(dinfo);
+
+ bailout:
+ if(cinfo->global_state>CSTATE_START) jpeg_abort_compress(cinfo);
+ if(dinfo->global_state>DSTATE_START) jpeg_abort_decompress(dinfo);
+ if(xinfo) free(xinfo);
+ return retval;
+}
Property changes on: third_party/libjpeg_turbo/turbojpeg.c
___________________________________________________________________
Added: svn:eol-style
+ LF
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