diff options
Diffstat (limited to 'plugins/FreeImage/src/LibMNG/libmng_write.c')
| -rw-r--r-- | plugins/FreeImage/src/LibMNG/libmng_write.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/plugins/FreeImage/src/LibMNG/libmng_write.c b/plugins/FreeImage/src/LibMNG/libmng_write.c new file mode 100644 index 0000000000..22ed3a01e4 --- /dev/null +++ b/plugins/FreeImage/src/LibMNG/libmng_write.c @@ -0,0 +1,198 @@ +/* ************************************************************************** */
+/* * For conditions of distribution and use, * */
+/* * see copyright notice in libmng.h * */
+/* ************************************************************************** */
+/* * * */
+/* * project : libmng * */
+/* * file : libmng_write.c copyright (c) 2000-2004 G.Juyn * */
+/* * version : 1.0.9 * */
+/* * * */
+/* * purpose : Write management (implementation) * */
+/* * * */
+/* * author : G.Juyn * */
+/* * * */
+/* * comment : implementation of the write management routines * */
+/* * * */
+/* * changes : 0.5.1 - 05/08/2000 - G.Juyn * */
+/* * - changed strict-ANSI stuff * */
+/* * 0.5.1 - 05/12/2000 - G.Juyn * */
+/* * - changed trace to macro for callback error-reporting * */
+/* * 0.5.1 - 05/16/2000 - G.Juyn * */
+/* * - moved the actual write_graphic functionality from * */
+/* * mng_hlapi to its appropriate function here * */
+/* * * */
+/* * 0.9.1 - 07/19/2000 - G.Juyn * */
+/* * - fixed writing of signature * */
+/* * * */
+/* * 0.9.2 - 08/05/2000 - G.Juyn * */
+/* * - changed file-prefixes * */
+/* * * */
+/* * 1.0.5 - 08/19/2002 - G.Juyn * */
+/* * - B597134 - libmng pollutes the linker namespace * */
+/* * * */
+/* * 1.0.8 - 07/06/2004 - G.R-P * */
+/* * - added conditionals around openstream/closestream * */
+/* * - defend against using undefined Open/Closestream function * */
+/* * 1.0.8 - 08/02/2004 - G.Juyn * */
+/* * - added conditional to allow easier writing of large MNG's * */
+/* * * */
+/* * 1.0.9 - 09/25/2004 - G.Juyn * */
+/* * - replaced MNG_TWEAK_LARGE_FILES with permanent solution * */
+/* * 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_chunks.h"
+#include "libmng_chunk_io.h"
+#include "libmng_write.h"
+
+#if defined(__BORLANDC__) && defined(MNG_STRICT_ANSI)
+#pragma option -A /* force ANSI-C */
+#endif
+
+/* ************************************************************************** */
+
+#if defined(MNG_SUPPORT_READ) || defined(MNG_SUPPORT_WRITE)
+mng_retcode mng_drop_chunks (mng_datap pData)
+{
+ mng_chunkp pChunk;
+ mng_chunkp pNext;
+ mng_cleanupchunk fCleanup;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_DROP_CHUNKS, MNG_LC_START);
+#endif
+
+ pChunk = pData->pFirstchunk; /* and get first stored chunk (if any) */
+
+ while (pChunk) /* more chunks to discard ? */
+ {
+ pNext = ((mng_chunk_headerp)pChunk)->pNext;
+ /* call appropriate cleanup */
+ fCleanup = ((mng_chunk_headerp)pChunk)->fCleanup;
+ fCleanup (pData, pChunk);
+
+ pChunk = pNext; /* neeeext */
+ }
+
+ pData->pFirstchunk = MNG_NULL;
+ pData->pLastchunk = MNG_NULL;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_DROP_CHUNKS, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+#endif /* MNG_SUPPORT_READ || MNG_SUPPORT_WRITE */
+
+/* ************************************************************************** */
+
+#ifdef MNG_INCLUDE_WRITE_PROCS
+
+/* ************************************************************************** */
+
+mng_retcode mng_write_graphic (mng_datap pData)
+{
+ mng_chunkp pChunk;
+ mng_retcode iRetcode;
+ mng_uint32 iWritten;
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_WRITE_GRAPHIC, MNG_LC_START);
+#endif
+
+ pChunk = pData->pFirstchunk; /* we'll start with the first, thank you */
+
+ if (pChunk) /* is there anything to write ? */
+ { /* open the file */
+ if (!pData->bWriting)
+ {
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ if (pData->fOpenstream && !pData->fOpenstream ((mng_handle)pData))
+ MNG_ERROR (pData, MNG_APPIOERROR);
+#endif
+ {
+ pData->bWriting = MNG_TRUE; /* indicate writing */
+ pData->iWritebufsize = 32768; /* get a temporary write buffer */
+ /* reserve 12 bytes for length, chunkname & crc */
+ MNG_ALLOC (pData, pData->pWritebuf, pData->iWritebufsize+12);
+
+ /* write the signature */
+ if (((mng_chunk_headerp)pChunk)->iChunkname == MNG_UINT_IHDR)
+ mng_put_uint32 (pData->pWritebuf, PNG_SIG);
+ else
+ if (((mng_chunk_headerp)pChunk)->iChunkname == MNG_UINT_JHDR)
+ mng_put_uint32 (pData->pWritebuf, JNG_SIG);
+ else
+ mng_put_uint32 (pData->pWritebuf, MNG_SIG);
+
+ mng_put_uint32 (pData->pWritebuf+4, POST_SIG);
+
+ if (!pData->fWritedata ((mng_handle)pData, pData->pWritebuf, 8, &iWritten))
+ {
+ MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize+12);
+ MNG_ERROR (pData, MNG_APPIOERROR);
+ }
+
+ if (iWritten != 8) /* disk full ? */
+ {
+ MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize+12);
+ MNG_ERROR (pData, MNG_OUTPUTERROR);
+ }
+ }
+ }
+
+ while (pChunk) /* so long as there's something to write */
+ { /* let's call its output routine */
+ iRetcode = ((mng_chunk_headerp)pChunk)->fWrite (pData, pChunk);
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ /* neeeext */
+ pChunk = ((mng_chunk_headerp)pChunk)->pNext;
+ }
+
+ if (!pData->bCreating)
+ { /* free the temporary buffer */
+ MNG_FREE (pData, pData->pWritebuf, pData->iWritebufsize+12);
+
+ pData->bWriting = MNG_FALSE; /* done writing */
+ /* close the stream now */
+#ifndef MNG_NO_OPEN_CLOSE_STREAM
+ if (pData->fClosestream && !pData->fClosestream ((mng_handle)pData))
+ MNG_ERROR (pData, MNG_APPIOERROR);
+#endif
+
+ } else {
+ /* cleanup the written chunks */
+ iRetcode = mng_drop_chunks (pData);
+ if (iRetcode) /* on error bail out */
+ return iRetcode;
+ }
+ }
+
+#ifdef MNG_SUPPORT_TRACE
+ MNG_TRACE (pData, MNG_FN_WRITE_GRAPHIC, MNG_LC_END);
+#endif
+
+ return MNG_NOERROR;
+}
+
+/* ************************************************************************** */
+
+#endif /* MNG_INCLUDE_WRITE_PROCS */
+
+/* ************************************************************************** */
+/* * end of file * */
+/* ************************************************************************** */
+
+
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