diff options
Diffstat (limited to 'src/3rdparty/libmng/libmng_jpeg.c')
| -rw-r--r-- | src/3rdparty/libmng/libmng_jpeg.c | 1088 |
1 files changed, 0 insertions, 1088 deletions
diff --git a/src/3rdparty/libmng/libmng_jpeg.c b/src/3rdparty/libmng/libmng_jpeg.c deleted file mode 100644 index 5042e1d..0000000 --- a/src/3rdparty/libmng/libmng_jpeg.c +++ /dev/null @@ -1,1088 +0,0 @@ -/* ************************************************************************** */ -/* * For conditions of distribution and use, * */ -/* * see copyright notice in libmng.h * */ -/* ************************************************************************** */ -/* * * */ -/* * project : libmng * */ -/* * file : libmng_jpeg.c copyright (c) 2000-2004 G.Juyn * */ -/* * version : 1.0.9 * */ -/* * * */ -/* * purpose : JPEG library interface (implementation) * */ -/* * * */ -/* * author : G.Juyn * */ -/* * * */ -/* * comment : implementation of the JPEG library interface * */ -/* * * */ -/* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */ -/* * - changed strict-ANSI stuff * */ -/* * * */ -/* * 0.5.2 - 05/22/2000 - G.Juyn * */ -/* * - implemented all the JNG routines * */ -/* * * */ -/* * 0.5.3 - 06/17/2000 - G.Juyn * */ -/* * - added tracing of JPEG calls * */ -/* * 0.5.3 - 06/24/2000 - G.Juyn * */ -/* * - fixed inclusion of IJG read/write code * */ -/* * 0.5.3 - 06/29/2000 - G.Juyn * */ -/* * - fixed some 64-bit warnings * */ -/* * * */ -/* * 0.9.2 - 08/05/2000 - G.Juyn * */ -/* * - changed file-prefixes * */ -/* * * */ -/* * 0.9.3 - 10/16/2000 - G.Juyn * */ -/* * - added support for JDAA * */ -/* * * */ -/* * 1.0.1 - 04/19/2001 - G.Juyn * */ -/* * - added export of JPEG functions for DLL * */ -/* * 1.0.1 - 04/22/2001 - G.Juyn * */ -/* * - fixed memory-leaks (Thanks Gregg!) * */ -/* * * */ -/* * 1.0.4 - 06/22/2002 - G.Juyn * */ -/* * - B526138 - returned IJGSRC6B calling convention to * */ -/* * default for MSVC * */ -/* * * */ -/* * 1.0.5 - 24/02/2003 - G.Juyn * */ -/* * - B683152 - libjpeg suspension not always honored correctly* */ -/* * * */ -/* * 1.0.6 - 03/04/2003 - G.Juyn * */ -/* * - fixed some compiler-warnings * */ -/* * * */ -/* * 1.0.8 - 08/01/2004 - G.Juyn * */ -/* * - added support for 3+byte pixelsize for JPEG's * */ -/* * * */ -/* * 1.0.9 - 12/20/2004 - G.Juyn * */ -/* * - cleaned up macro-invocations (thanks to D. Airlie) * */ -/* * * */ -/* ************************************************************************** */ - -#include "libmng.h" -#include "libmng_data.h" -#include "libmng_error.h" -#include "libmng_trace.h" -#ifdef __BORLANDC__ -#pragma hdrstop -#endif -#include "libmng_memory.h" -#include "libmng_pixels.h" -#include "libmng_jpeg.h" - -#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI) -#pragma option -A /* force ANSI-C */ -#endif - -/* ************************************************************************** */ - -#if defined(MNG_INCLUDE_JNG) && defined(MNG_INCLUDE_DISPLAY_PROCS) - -/* ************************************************************************** */ -/* * * */ -/* * Local IJG callback routines (source-manager, error-manager and such) * */ -/* * * */ -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_IJG6B - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -#ifdef MNG_DEFINE_JPEG_STDCALL -void MNG_DECL mng_init_source (j_decompress_ptr cinfo) -#else -void mng_init_source (j_decompress_ptr cinfo) -#endif -{ - return; /* nothing needed */ -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -#ifdef MNG_DEFINE_JPEG_STDCALL -boolean MNG_DECL mng_fill_input_buffer (j_decompress_ptr cinfo) -#else -boolean mng_fill_input_buffer (j_decompress_ptr cinfo) -#endif -{ - return FALSE; /* force IJG routine to return to caller */ -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -#ifdef MNG_DEFINE_JPEG_STDCALL -void MNG_DECL mng_skip_input_data (j_decompress_ptr cinfo, long num_bytes) -#else -void mng_skip_input_data (j_decompress_ptr cinfo, long num_bytes) -#endif -{ - if (num_bytes > 0) /* ignore fony calls */ - { /* address my generic structure */ - mng_datap pData = (mng_datap)cinfo->client_data; - /* address source manager */ - mngjpeg_sourcep pSrc = pData->pJPEGdinfo->src; - /* problem scenario ? */ - if (pSrc->bytes_in_buffer < (size_t)num_bytes) - { /* tell the boss we need to skip some data! */ - pData->iJPEGtoskip = (mng_uint32)((size_t)num_bytes - pSrc->bytes_in_buffer); - - pSrc->bytes_in_buffer = 0; /* let the JPEG lib suspend */ - pSrc->next_input_byte = MNG_NULL; - } - else - { /* simply advance in the buffer */ - pSrc->bytes_in_buffer -= num_bytes; - pSrc->next_input_byte += num_bytes; - } - } - - return; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -#ifdef MNG_DEFINE_JPEG_STDCALL -void MNG_DECL mng_skip_input_data2 (j_decompress_ptr cinfo, long num_bytes) -#else -void mng_skip_input_data2 (j_decompress_ptr cinfo, long num_bytes) -#endif -{ - if (num_bytes > 0) /* ignore fony calls */ - { /* address my generic structure */ - mng_datap pData = (mng_datap)cinfo->client_data; - /* address source manager */ - mngjpeg_sourcep pSrc = pData->pJPEGdinfo2->src; - /* problem scenario ? */ - if (pSrc->bytes_in_buffer < (size_t)num_bytes) - { /* tell the boss we need to skip some data! */ - pData->iJPEGtoskip2 = (mng_uint32)((size_t)num_bytes - pSrc->bytes_in_buffer); - - pSrc->bytes_in_buffer = 0; /* let the JPEG lib suspend */ - pSrc->next_input_byte = MNG_NULL; - } - else - { /* simply advance in the buffer */ - pSrc->bytes_in_buffer -= num_bytes; - pSrc->next_input_byte += num_bytes; - } - } - - return; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -#ifdef MNG_DEFINE_JPEG_STDCALL -void MNG_DECL mng_term_source (j_decompress_ptr cinfo) -#else -void mng_term_source (j_decompress_ptr cinfo) -#endif -{ - return; /* nothing needed */ -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_USE_SETJMP -#ifdef MNG_DEFINE_JPEG_STDCALL -void MNG_DECL mng_error_exit (j_common_ptr cinfo) -#else -void mng_error_exit (j_common_ptr cinfo) -#endif -{ /* address my generic structure */ - mng_datap pData = (mng_datap)cinfo->client_data; - -#ifdef MNG_ERROR_TELLTALE /* fill the message text ??? */ - (*cinfo->err->output_message) (cinfo); -#endif - /* return to the point of no return... */ - longjmp (pData->sErrorbuf, cinfo->err->msg_code); -} -#endif /* MNG_USE_SETJMP */ - -/* ************************************************************************** */ - -#ifdef MNG_USE_SETJMP -#ifdef MNG_DEFINE_JPEG_STDCALL -void MNG_DECL mng_output_message (j_common_ptr cinfo) -#else -void mng_output_message (j_common_ptr cinfo) -#endif -{ - return; /* just do nothing ! */ -} -#endif /* MNG_USE_SETJMP */ - -/* ************************************************************************** */ - -#endif /* MNG_INCLUDE_IJG6B */ - -/* ************************************************************************** */ -/* * * */ -/* * Global JPEG routines * */ -/* * * */ -/* ************************************************************************** */ - -mng_retcode mngjpeg_initialize (mng_datap pData) -{ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_INITIALIZE, MNG_LC_START); -#endif - /* allocate space for JPEG structures if necessary */ -#ifdef MNG_INCLUDE_JNG_READ - if (pData->pJPEGderr == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGderr, sizeof (mngjpeg_error )); - if (pData->pJPEGdsrc == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGdsrc, sizeof (mngjpeg_source)); - if (pData->pJPEGdinfo == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGdinfo, sizeof (mngjpeg_decomp)); - /* enable reverse addressing */ - pData->pJPEGdinfo->client_data = pData; - - if (pData->pJPEGderr2 == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGderr2, sizeof (mngjpeg_error )); - if (pData->pJPEGdsrc2 == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGdsrc2, sizeof (mngjpeg_source)); - if (pData->pJPEGdinfo2 == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGdinfo2, sizeof (mngjpeg_decomp)); - /* enable reverse addressing */ - pData->pJPEGdinfo2->client_data = pData; -#endif - -#ifdef MNG_INCLUDE_JNG_WRITE - if (pData->pJPEGcerr == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGcerr, sizeof (mngjpeg_error )); - if (pData->pJPEGcinfo == MNG_NULL) - MNG_ALLOC (pData, pData->pJPEGcinfo, sizeof (mngjpeg_comp )); - /* enable reverse addressing */ - pData->pJPEGcinfo->client_data = pData; -#endif - - if (pData->pJPEGbuf == MNG_NULL) /* initialize temporary buffers */ - { - pData->iJPEGbufmax = MNG_JPEG_MAXBUF; - MNG_ALLOC (pData, pData->pJPEGbuf, pData->iJPEGbufmax); - } - - if (pData->pJPEGbuf2 == MNG_NULL) - { - pData->iJPEGbufmax2 = MNG_JPEG_MAXBUF; - MNG_ALLOC (pData, pData->pJPEGbuf2, pData->iJPEGbufmax2); - } - - pData->pJPEGcurrent = pData->pJPEGbuf; - pData->iJPEGbufremain = 0; - pData->pJPEGrow = MNG_NULL; - pData->iJPEGrowlen = 0; - pData->iJPEGtoskip = 0; - - pData->pJPEGcurrent2 = pData->pJPEGbuf2; - pData->iJPEGbufremain2 = 0; - pData->pJPEGrow2 = MNG_NULL; - pData->iJPEGrowlen2 = 0; - pData->iJPEGtoskip2 = 0; - /* not doing anything yet ! */ - pData->bJPEGcompress = MNG_FALSE; - - pData->bJPEGdecompress = MNG_FALSE; - pData->bJPEGhasheader = MNG_FALSE; - pData->bJPEGdecostarted = MNG_FALSE; - pData->bJPEGscanstarted = MNG_FALSE; - pData->bJPEGscanending = MNG_FALSE; - - pData->bJPEGdecompress2 = MNG_FALSE; - pData->bJPEGhasheader2 = MNG_FALSE; - pData->bJPEGdecostarted2 = MNG_FALSE; - pData->bJPEGscanstarted2 = MNG_FALSE; - - pData->iJPEGrow = 0; /* zero input/output lines */ - pData->iJPEGalpharow = 0; - pData->iJPEGrgbrow = 0; - pData->iJPEGdisprow = 0; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_INITIALIZE, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ - -mng_retcode mngjpeg_cleanup (mng_datap pData) -{ -#if defined(MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - mng_retcode iRetcode; -#endif - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_CLEANUP, MNG_LC_START); -#endif - -#ifdef MNG_INCLUDE_IJG6B -#ifdef MNG_USE_SETJMP - iRetcode = setjmp (pData->sErrorbuf);/* setup local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif - -#ifdef MNG_INCLUDE_JNG_READ /* still decompressing something ? */ - if (pData->bJPEGdecompress) - jpeg_destroy_decompress (pData->pJPEGdinfo); - if (pData->bJPEGdecompress2) - jpeg_destroy_decompress (pData->pJPEGdinfo2); -#endif - -#ifdef MNG_INCLUDE_JNG_WRITE - if (pData->bJPEGcompress) /* still compressing something ? */ - jpeg_destroy_compress (pData->pJPEGcinfo); -#endif - -#endif /* MNG_INCLUDE_IJG6B */ - /* cleanup temporary buffers */ - MNG_FREE (pData, pData->pJPEGbuf2, pData->iJPEGbufmax2); - MNG_FREE (pData, pData->pJPEGbuf, pData->iJPEGbufmax); - /* cleanup space for JPEG structures */ -#ifdef MNG_INCLUDE_JNG_WRITE - MNG_FREE (pData, pData->pJPEGcinfo, sizeof (mngjpeg_comp )); - MNG_FREE (pData, pData->pJPEGcerr, sizeof (mngjpeg_error )); -#endif - -#ifdef MNG_INCLUDE_JNG_READ - MNG_FREE (pData, pData->pJPEGdinfo, sizeof (mngjpeg_decomp)); - MNG_FREE (pData, pData->pJPEGdsrc, sizeof (mngjpeg_source)); - MNG_FREE (pData, pData->pJPEGderr, sizeof (mngjpeg_error )); - MNG_FREE (pData, pData->pJPEGdinfo2, sizeof (mngjpeg_decomp)); - MNG_FREE (pData, pData->pJPEGdsrc2, sizeof (mngjpeg_source)); - MNG_FREE (pData, pData->pJPEGderr2, sizeof (mngjpeg_error )); -#endif - - MNG_FREE (pData, pData->pJPEGrow2, pData->iJPEGrowlen2); - MNG_FREE (pData, pData->pJPEGrow, pData->iJPEGrowlen); - /* whatever we were doing ... */ - /* we don't anymore ... */ - pData->bJPEGcompress = MNG_FALSE; - - pData->bJPEGdecompress = MNG_FALSE; - pData->bJPEGhasheader = MNG_FALSE; - pData->bJPEGdecostarted = MNG_FALSE; - pData->bJPEGscanstarted = MNG_FALSE; - pData->bJPEGscanending = MNG_FALSE; - - pData->bJPEGdecompress2 = MNG_FALSE; - pData->bJPEGhasheader2 = MNG_FALSE; - pData->bJPEGdecostarted2 = MNG_FALSE; - pData->bJPEGscanstarted2 = MNG_FALSE; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_CLEANUP, MNG_LC_END); -#endif - - return MNG_NOERROR; -} - -/* ************************************************************************** */ -/* * * */ -/* * JPEG decompression routines (JDAT) * */ -/* * * */ -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -mng_retcode mngjpeg_decompressinit (mng_datap pData) -{ -#if defined(MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - mng_retcode iRetcode; -#endif - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSINIT, MNG_LC_START); -#endif - -#ifdef MNG_INCLUDE_IJG6B - /* allocate and initialize a JPEG decompression object */ - pData->pJPEGdinfo->err = jpeg_std_error (pData->pJPEGderr); - -#ifdef MNG_USE_SETJMP /* setup local JPEG error-routines */ - pData->pJPEGderr->error_exit = mng_error_exit; - pData->pJPEGderr->output_message = mng_output_message; - - iRetcode = setjmp (pData->sErrorbuf);/* setup local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif /* MNG_USE_SETJMP */ - - /* allocate and initialize a JPEG decompression object (continued) */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSINIT, MNG_LC_JPEG_CREATE_DECOMPRESS) -#endif - jpeg_create_decompress (pData->pJPEGdinfo); - - pData->bJPEGdecompress = MNG_TRUE; /* indicate it's initialized */ - - /* specify the source of the compressed data (eg, a file) */ - /* no, not a file; we have buffered input */ - pData->pJPEGdinfo->src = pData->pJPEGdsrc; - /* use the default handler */ - pData->pJPEGdinfo->src->resync_to_restart = jpeg_resync_to_restart; - /* setup local source routine & parms */ - pData->pJPEGdinfo->src->init_source = mng_init_source; - pData->pJPEGdinfo->src->fill_input_buffer = mng_fill_input_buffer; - pData->pJPEGdinfo->src->skip_input_data = mng_skip_input_data; - pData->pJPEGdinfo->src->term_source = mng_term_source; - pData->pJPEGdinfo->src->next_input_byte = pData->pJPEGcurrent; - pData->pJPEGdinfo->src->bytes_in_buffer = pData->iJPEGbufremain; - -#endif /* MNG_INCLUDE_IJG6B */ - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSINIT, MNG_LC_END); -#endif - - return MNG_NOERROR; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -mng_retcode mngjpeg_decompressdata (mng_datap pData, - mng_uint32 iRawsize, - mng_uint8p pRawdata) -{ - mng_retcode iRetcode; - mng_uint32 iRemain; - mng_uint8p pWork; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_START); -#endif - -#if defined (MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - iRetcode = setjmp (pData->sErrorbuf);/* initialize local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif - - pWork = pRawdata; - iRemain = iRawsize; - - if (pData->iJPEGtoskip) /* JPEG-lib told us to skip some more data ? */ - { - if (iRemain > pData->iJPEGtoskip) /* enough data in this buffer ? */ - { - iRemain -= pData->iJPEGtoskip; /* skip enough to access the next byte */ - pWork += pData->iJPEGtoskip; - - pData->iJPEGtoskip = 0; /* no more to skip then */ - } - else - { - pData->iJPEGtoskip -= iRemain; /* skip all data in the buffer */ - iRemain = 0; /* and indicate this accordingly */ - } - /* the skip set current-pointer to NULL ! */ - pData->pJPEGcurrent = pData->pJPEGbuf; - } - - while (iRemain) /* repeat until no more input-bytes */ - { /* need to shift anything ? */ - if ((pData->pJPEGcurrent > pData->pJPEGbuf) && - (pData->pJPEGcurrent - pData->pJPEGbuf + pData->iJPEGbufremain + iRemain > pData->iJPEGbufmax)) - { - if (pData->iJPEGbufremain > 0) /* then do so */ - MNG_COPY (pData->pJPEGbuf, pData->pJPEGcurrent, pData->iJPEGbufremain); - - pData->pJPEGcurrent = pData->pJPEGbuf; - } - /* does the remaining input fit into the buffer ? */ - if (pData->iJPEGbufremain + iRemain <= pData->iJPEGbufmax) - { /* move the lot */ - MNG_COPY ((pData->pJPEGcurrent + pData->iJPEGbufremain), pWork, iRemain); - - pData->iJPEGbufremain += iRemain;/* adjust remaining_bytes counter */ - iRemain = 0; /* and indicate there's no input left */ - } - else - { /* calculate what does fit */ - mng_uint32 iFits = pData->iJPEGbufmax - pData->iJPEGbufremain; - - if (iFits <= 0) /* no space is just bugger 'm all */ - MNG_ERROR (pData, MNG_JPEGBUFTOOSMALL); - /* move that */ - MNG_COPY ((pData->pJPEGcurrent + pData->iJPEGbufremain), pWork, iFits); - - pData->iJPEGbufremain += iFits; /* adjust remain_bytes counter */ - iRemain -= iFits; /* and the input-parms */ - pWork += iFits; - } - -#ifdef MNG_INCLUDE_IJG6B - pData->pJPEGdinfo->src->next_input_byte = pData->pJPEGcurrent; - pData->pJPEGdinfo->src->bytes_in_buffer = pData->iJPEGbufremain; - - if (!pData->bJPEGhasheader) /* haven't got the header yet ? */ - { - /* call jpeg_read_header() to obtain image info */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_READ_HEADER) -#endif - if (jpeg_read_header (pData->pJPEGdinfo, TRUE) != JPEG_SUSPENDED) - { /* indicate the header's oke */ - pData->bJPEGhasheader = MNG_TRUE; - /* let's do some sanity checks ! */ - if ((pData->pJPEGdinfo->image_width != pData->iDatawidth ) || - (pData->pJPEGdinfo->image_height != pData->iDataheight) ) - MNG_ERROR (pData, MNG_JPEGPARMSERR); - - if ( ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAY ) || - (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA) ) && - (pData->pJPEGdinfo->jpeg_color_space != JCS_GRAYSCALE ) ) - MNG_ERROR (pData, MNG_JPEGPARMSERR); - - if ( ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLOR ) || - (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) ) && - (pData->pJPEGdinfo->jpeg_color_space != JCS_YCbCr ) ) - MNG_ERROR (pData, MNG_JPEGPARMSERR); - /* indicate whether or not it's progressive */ - pData->bJPEGprogressive = (mng_bool)jpeg_has_multiple_scans (pData->pJPEGdinfo); - /* progressive+alpha can't display "on-the-fly"!! */ - if ((pData->bJPEGprogressive) && - ((pData->iJHDRcolortype == MNG_COLORTYPE_JPEGGRAYA ) || - (pData->iJHDRcolortype == MNG_COLORTYPE_JPEGCOLORA) )) - pData->fDisplayrow = MNG_NULL; - /* allocate a row of JPEG-samples */ - if (pData->pJPEGdinfo->jpeg_color_space == JCS_YCbCr) - pData->iJPEGrowlen = pData->pJPEGdinfo->image_width * RGB_PIXELSIZE; - else - pData->iJPEGrowlen = pData->pJPEGdinfo->image_width; - - MNG_ALLOC (pData, pData->pJPEGrow, pData->iJPEGrowlen); - - pData->iJPEGrgbrow = 0; /* quite empty up to now */ - } - - pData->pJPEGcurrent = (mng_uint8p)pData->pJPEGdinfo->src->next_input_byte; - pData->iJPEGbufremain = (mng_uint32)pData->pJPEGdinfo->src->bytes_in_buffer; - } - /* decompress not started ? */ - if ((pData->bJPEGhasheader) && (!pData->bJPEGdecostarted)) - { - /* set parameters for decompression */ - - if (pData->bJPEGprogressive) /* progressive display ? */ - pData->pJPEGdinfo->buffered_image = TRUE; - - /* jpeg_start_decompress(...); */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_START_DECOMPRESS) -#endif - if (jpeg_start_decompress (pData->pJPEGdinfo) == TRUE) - /* indicate it started */ - pData->bJPEGdecostarted = MNG_TRUE; - - pData->pJPEGcurrent = (mng_uint8p)pData->pJPEGdinfo->src->next_input_byte; - pData->iJPEGbufremain = (mng_uint32)pData->pJPEGdinfo->src->bytes_in_buffer; - } - /* process some scanlines ? */ - if ((pData->bJPEGhasheader) && (pData->bJPEGdecostarted) && - ((!jpeg_input_complete (pData->pJPEGdinfo)) || - (pData->pJPEGdinfo->output_scanline < pData->pJPEGdinfo->output_height) || - ((pData->bJPEGprogressive) && (pData->bJPEGscanending)))) - { - mng_int32 iLines = 0; - - /* for (each output pass) */ - do - { /* address the row output buffer */ - JSAMPROW pRow = (JSAMPROW)pData->pJPEGrow; - - /* init new pass ? */ - if ((pData->bJPEGprogressive) && (!pData->bJPEGscanstarted)) - { - pData->bJPEGscanstarted = MNG_TRUE; - - /* adjust output decompression parameters if required */ - /* nop */ - - /* start a new output pass */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_START_OUTPUT) -#endif - jpeg_start_output (pData->pJPEGdinfo, pData->pJPEGdinfo->input_scan_number); - - pData->iJPEGrow = 0; /* start at row 0 in the image again */ - } - - /* while (scan lines remain to be read) */ - if ((!pData->bJPEGprogressive) || (!pData->bJPEGscanending)) - { - do - { - /* jpeg_read_scanlines(...); */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_READ_SCANLINES) -#endif - iLines = jpeg_read_scanlines (pData->pJPEGdinfo, (JSAMPARRAY)&pRow, 1); - - pData->pJPEGcurrent = (mng_uint8p)pData->pJPEGdinfo->src->next_input_byte; - pData->iJPEGbufremain = (mng_uint32)pData->pJPEGdinfo->src->bytes_in_buffer; - - if (iLines > 0) /* got something ? */ - { - if (pData->fStorerow2) /* store in object ? */ - { - iRetcode = ((mng_storerow)pData->fStorerow2) (pData); - - if (iRetcode) /* on error bail out */ - return iRetcode; - - } - } - } - while ((pData->pJPEGdinfo->output_scanline < pData->pJPEGdinfo->output_height) && - (iLines > 0)); /* until end-of-image or not enough input-data */ - } - - /* terminate output pass */ - if ((pData->bJPEGprogressive) && - (pData->pJPEGdinfo->output_scanline >= pData->pJPEGdinfo->output_height)) - { -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_FINISH_OUTPUT) -#endif - if (jpeg_finish_output (pData->pJPEGdinfo) != JPEG_SUSPENDED) - { /* this scan has ended */ - pData->bJPEGscanstarted = MNG_FALSE; - pData->bJPEGscanending = MNG_FALSE; - } - else - { - pData->bJPEGscanending = MNG_TRUE; - } - } - } - while ((!jpeg_input_complete (pData->pJPEGdinfo)) && - (iLines > 0) && (!pData->bJPEGscanending)); - } - /* end of image ? */ - if ((pData->bJPEGhasheader) && (pData->bJPEGdecostarted) && - (!pData->bJPEGscanending) && (jpeg_input_complete (pData->pJPEGdinfo)) && - (pData->pJPEGdinfo->input_scan_number == pData->pJPEGdinfo->output_scan_number)) - { - /* jpeg_finish_decompress(...); */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_FINISH_DECOMPRESS) -#endif - if (jpeg_finish_decompress (pData->pJPEGdinfo) == TRUE) - { /* indicate it's done */ - pData->bJPEGhasheader = MNG_FALSE; - pData->bJPEGdecostarted = MNG_FALSE; - pData->pJPEGcurrent = (mng_uint8p)pData->pJPEGdinfo->src->next_input_byte; - pData->iJPEGbufremain = (mng_uint32)pData->pJPEGdinfo->src->bytes_in_buffer; - /* remaining fluff is an error ! */ - if ((pData->iJPEGbufremain > 0) || (iRemain > 0)) - MNG_ERROR (pData, MNG_TOOMUCHJDAT); - } - } -#endif /* MNG_INCLUDE_IJG6B */ - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_END); -#endif - - return MNG_NOERROR; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -mng_retcode mngjpeg_decompressfree (mng_datap pData) -{ -#if defined(MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - mng_retcode iRetcode; -#endif - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSFREE, MNG_LC_START); -#endif - -#ifdef MNG_INCLUDE_IJG6B -#ifdef MNG_USE_SETJMP - iRetcode = setjmp (pData->sErrorbuf);/* setup local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif - /* free the row of JPEG-samples*/ - MNG_FREE (pData, pData->pJPEGrow, pData->iJPEGrowlen); - - /* release the JPEG decompression object */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSFREE, MNG_LC_JPEG_DESTROY_DECOMPRESS) -#endif - jpeg_destroy_decompress (pData->pJPEGdinfo); - - pData->bJPEGdecompress = MNG_FALSE; /* indicate it's done */ - -#endif /* MNG_INCLUDE_IJG6B */ - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSFREE, MNG_LC_END); -#endif - - return MNG_NOERROR; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ -/* * * */ -/* * JPEG decompression routines (JDAA) * */ -/* * * */ -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -mng_retcode mngjpeg_decompressinit2 (mng_datap pData) -{ -#if defined(MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - mng_retcode iRetcode; -#endif - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSINIT, MNG_LC_START); -#endif - -#ifdef MNG_INCLUDE_IJG6B - /* allocate and initialize a JPEG decompression object */ - pData->pJPEGdinfo2->err = jpeg_std_error (pData->pJPEGderr2); - -#ifdef MNG_USE_SETJMP /* setup local JPEG error-routines */ - pData->pJPEGderr2->error_exit = mng_error_exit; - pData->pJPEGderr2->output_message = mng_output_message; - - iRetcode = setjmp (pData->sErrorbuf);/* setup local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif /* MNG_USE_SETJMP */ - - /* allocate and initialize a JPEG decompression object (continued) */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSINIT, MNG_LC_JPEG_CREATE_DECOMPRESS) -#endif - jpeg_create_decompress (pData->pJPEGdinfo2); - - pData->bJPEGdecompress2 = MNG_TRUE; /* indicate it's initialized */ - - /* specify the source of the compressed data (eg, a file) */ - /* no, not a file; we have buffered input */ - pData->pJPEGdinfo2->src = pData->pJPEGdsrc2; - /* use the default handler */ - pData->pJPEGdinfo2->src->resync_to_restart = jpeg_resync_to_restart; - /* setup local source routine & parms */ - pData->pJPEGdinfo2->src->init_source = mng_init_source; - pData->pJPEGdinfo2->src->fill_input_buffer = mng_fill_input_buffer; - pData->pJPEGdinfo2->src->skip_input_data = mng_skip_input_data2; - pData->pJPEGdinfo2->src->term_source = mng_term_source; - pData->pJPEGdinfo2->src->next_input_byte = pData->pJPEGcurrent2; - pData->pJPEGdinfo2->src->bytes_in_buffer = pData->iJPEGbufremain2; - -#endif /* MNG_INCLUDE_IJG6B */ - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSINIT, MNG_LC_END); -#endif - - return MNG_NOERROR; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -mng_retcode mngjpeg_decompressdata2 (mng_datap pData, - mng_uint32 iRawsize, - mng_uint8p pRawdata) -{ - mng_retcode iRetcode; - mng_uint32 iRemain; - mng_uint8p pWork; - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_START); -#endif - -#if defined (MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - iRetcode = setjmp (pData->sErrorbuf);/* initialize local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif - - pWork = pRawdata; - iRemain = iRawsize; - - if (pData->iJPEGtoskip2) /* JPEG-lib told us to skip some more data ? */ - { - if (iRemain > pData->iJPEGtoskip2) /* enough data in this buffer ? */ - { - iRemain -= pData->iJPEGtoskip2; /* skip enough to access the next byte */ - pWork += pData->iJPEGtoskip2; - - pData->iJPEGtoskip2 = 0; /* no more to skip then */ - } - else - { - pData->iJPEGtoskip2 -= iRemain; /* skip all data in the buffer */ - iRemain = 0; /* and indicate this accordingly */ - } - /* the skip set current-pointer to NULL ! */ - pData->pJPEGcurrent2 = pData->pJPEGbuf2; - } - - while (iRemain) /* repeat until no more input-bytes */ - { /* need to shift anything ? */ - if ((pData->pJPEGcurrent2 > pData->pJPEGbuf2) && - (pData->pJPEGcurrent2 - pData->pJPEGbuf2 + pData->iJPEGbufremain2 + iRemain > pData->iJPEGbufmax2)) - { - if (pData->iJPEGbufremain2 > 0) /* then do so */ - MNG_COPY (pData->pJPEGbuf2, pData->pJPEGcurrent2, pData->iJPEGbufremain2); - - pData->pJPEGcurrent2 = pData->pJPEGbuf2; - } - /* does the remaining input fit into the buffer ? */ - if (pData->iJPEGbufremain2 + iRemain <= pData->iJPEGbufmax2) - { /* move the lot */ - MNG_COPY ((pData->pJPEGcurrent2 + pData->iJPEGbufremain2), pWork, iRemain); - /* adjust remaining_bytes counter */ - pData->iJPEGbufremain2 += iRemain; - iRemain = 0; /* and indicate there's no input left */ - } - else - { /* calculate what does fit */ - mng_uint32 iFits = pData->iJPEGbufmax2 - pData->iJPEGbufremain2; - - if (iFits <= 0) /* no space is just bugger 'm all */ - MNG_ERROR (pData, MNG_JPEGBUFTOOSMALL); - /* move that */ - MNG_COPY ((pData->pJPEGcurrent2 + pData->iJPEGbufremain2), pWork, iFits); - - pData->iJPEGbufremain2 += iFits; /* adjust remain_bytes counter */ - iRemain -= iFits; /* and the input-parms */ - pWork += iFits; - } - -#ifdef MNG_INCLUDE_IJG6B - pData->pJPEGdinfo2->src->next_input_byte = pData->pJPEGcurrent2; - pData->pJPEGdinfo2->src->bytes_in_buffer = pData->iJPEGbufremain2; - - if (!pData->bJPEGhasheader2) /* haven't got the header yet ? */ - { - /* call jpeg_read_header() to obtain image info */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_READ_HEADER) -#endif - if (jpeg_read_header (pData->pJPEGdinfo2, TRUE) != JPEG_SUSPENDED) - { /* indicate the header's oke */ - pData->bJPEGhasheader2 = MNG_TRUE; - /* let's do some sanity checks ! */ - if ((pData->pJPEGdinfo2->image_width != pData->iDatawidth ) || - (pData->pJPEGdinfo2->image_height != pData->iDataheight) ) - MNG_ERROR (pData, MNG_JPEGPARMSERR); - - if (pData->pJPEGdinfo2->jpeg_color_space != JCS_GRAYSCALE) - MNG_ERROR (pData, MNG_JPEGPARMSERR); - /* indicate whether or not it's progressive */ - pData->bJPEGprogressive2 = (mng_bool)jpeg_has_multiple_scans (pData->pJPEGdinfo2); - - if (pData->bJPEGprogressive2) /* progressive alphachannel not allowed !!! */ - MNG_ERROR (pData, MNG_JPEGPARMSERR); - /* allocate a row of JPEG-samples */ - if (pData->pJPEGdinfo2->jpeg_color_space == JCS_YCbCr) - pData->iJPEGrowlen2 = pData->pJPEGdinfo2->image_width * RGB_PIXELSIZE; - else - pData->iJPEGrowlen2 = pData->pJPEGdinfo2->image_width; - - MNG_ALLOC (pData, pData->pJPEGrow2, pData->iJPEGrowlen2); - - pData->iJPEGalpharow = 0; /* quite empty up to now */ - } - - pData->pJPEGcurrent2 = (mng_uint8p)pData->pJPEGdinfo2->src->next_input_byte; - pData->iJPEGbufremain2 = (mng_uint32)pData->pJPEGdinfo2->src->bytes_in_buffer; - } - /* decompress not started ? */ - if ((pData->bJPEGhasheader2) && (!pData->bJPEGdecostarted2)) - { - /* set parameters for decompression */ - - if (pData->bJPEGprogressive2) /* progressive display ? */ - pData->pJPEGdinfo2->buffered_image = TRUE; - - /* jpeg_start_decompress(...); */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_START_DECOMPRESS) -#endif - if (jpeg_start_decompress (pData->pJPEGdinfo2) == TRUE) - /* indicate it started */ - pData->bJPEGdecostarted2 = MNG_TRUE; - - pData->pJPEGcurrent2 = (mng_uint8p)pData->pJPEGdinfo2->src->next_input_byte; - pData->iJPEGbufremain2 = (mng_uint32)pData->pJPEGdinfo2->src->bytes_in_buffer; - } - /* process some scanlines ? */ - if ((pData->bJPEGhasheader2) && (pData->bJPEGdecostarted2) && - ((!jpeg_input_complete (pData->pJPEGdinfo2)) || - (pData->pJPEGdinfo2->output_scanline < pData->pJPEGdinfo2->output_height))) - { - mng_int32 iLines; - - /* for (each output pass) */ - do - { /* address the row output buffer */ - JSAMPROW pRow = (JSAMPROW)pData->pJPEGrow2; - - /* init new pass ? */ - if ((pData->bJPEGprogressive2) && - ((!pData->bJPEGscanstarted2) || - (pData->pJPEGdinfo2->output_scanline >= pData->pJPEGdinfo2->output_height))) - { - pData->bJPEGscanstarted2 = MNG_TRUE; - - /* adjust output decompression parameters if required */ - /* nop */ - - /* start a new output pass */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_START_OUTPUT) -#endif - jpeg_start_output (pData->pJPEGdinfo2, pData->pJPEGdinfo2->input_scan_number); - - pData->iJPEGrow = 0; /* start at row 0 in the image again */ - } - - /* while (scan lines remain to be read) */ - do - { - /* jpeg_read_scanlines(...); */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_READ_SCANLINES) -#endif - iLines = jpeg_read_scanlines (pData->pJPEGdinfo2, (JSAMPARRAY)&pRow, 1); - - pData->pJPEGcurrent2 = (mng_uint8p)pData->pJPEGdinfo2->src->next_input_byte; - pData->iJPEGbufremain2 = (mng_uint32)pData->pJPEGdinfo2->src->bytes_in_buffer; - - if (iLines > 0) /* got something ? */ - { - if (pData->fStorerow3) /* store in object ? */ - { - iRetcode = ((mng_storerow)pData->fStorerow3) (pData); - - if (iRetcode) /* on error bail out */ - return iRetcode; - - } - } - } - while ((pData->pJPEGdinfo2->output_scanline < pData->pJPEGdinfo2->output_height) && - (iLines > 0)); /* until end-of-image or not enough input-data */ - - /* terminate output pass */ - if ((pData->bJPEGprogressive2) && - (pData->pJPEGdinfo2->output_scanline >= pData->pJPEGdinfo2->output_height)) - { -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_FINISH_OUTPUT) -#endif - if (jpeg_finish_output (pData->pJPEGdinfo2) == JPEG_SUSPENDED) - jpeg_finish_output (pData->pJPEGdinfo2); - /* this scan has ended */ - pData->bJPEGscanstarted2 = MNG_FALSE; - } - } - while ((!jpeg_input_complete (pData->pJPEGdinfo2)) && (iLines > 0)); - } - /* end of image ? */ - if ((pData->bJPEGhasheader2) && (pData->bJPEGdecostarted2) && - (jpeg_input_complete (pData->pJPEGdinfo2)) && - (pData->pJPEGdinfo2->input_scan_number == pData->pJPEGdinfo2->output_scan_number)) - { - /* jpeg_finish_decompress(...); */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_JPEG_FINISH_DECOMPRESS) -#endif - if (jpeg_finish_decompress (pData->pJPEGdinfo2) == TRUE) - { /* indicate it's done */ - pData->bJPEGhasheader2 = MNG_FALSE; - pData->bJPEGdecostarted2 = MNG_FALSE; - pData->pJPEGcurrent2 = (mng_uint8p)pData->pJPEGdinfo2->src->next_input_byte; - pData->iJPEGbufremain2 = (mng_uint32)pData->pJPEGdinfo2->src->bytes_in_buffer; - /* remaining fluff is an error ! */ - if ((pData->iJPEGbufremain2 > 0) || (iRemain > 0)) - MNG_ERROR (pData, MNG_TOOMUCHJDAT); - } - } -#endif /* MNG_INCLUDE_IJG6B */ - } - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSDATA, MNG_LC_END); -#endif - - return MNG_NOERROR; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#ifdef MNG_INCLUDE_JNG_READ -mng_retcode mngjpeg_decompressfree2 (mng_datap pData) -{ -#if defined(MNG_INCLUDE_IJG6B) && defined(MNG_USE_SETJMP) - mng_retcode iRetcode; -#endif - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSFREE, MNG_LC_START); -#endif - -#ifdef MNG_INCLUDE_IJG6B -#ifdef MNG_USE_SETJMP - iRetcode = setjmp (pData->sErrorbuf);/* setup local JPEG error-recovery */ - if (iRetcode != 0) /* got here from longjmp ? */ - MNG_ERRORJ (pData, iRetcode); /* then IJG-lib issued an error */ -#endif - /* free the row of JPEG-samples*/ - MNG_FREE (pData, pData->pJPEGrow2, pData->iJPEGrowlen2); - - /* release the JPEG decompression object */ -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSFREE, MNG_LC_JPEG_DESTROY_DECOMPRESS) -#endif - jpeg_destroy_decompress (pData->pJPEGdinfo2); - - pData->bJPEGdecompress2 = MNG_FALSE; /* indicate it's done */ - -#endif /* MNG_INCLUDE_IJG6B */ - -#ifdef MNG_SUPPORT_TRACE - MNG_TRACE (pData, MNG_FN_JPEG_DECOMPRESSFREE, MNG_LC_END); -#endif - - return MNG_NOERROR; -} -#endif /* MNG_INCLUDE_JNG_READ */ - -/* ************************************************************************** */ - -#endif /* MNG_INCLUDE_JNG && MNG_INCLUDE_DISPLAY_PROCS */ - -/* ************************************************************************** */ -/* * end of file * */ -/* ************************************************************************** */ - |