X-Git-Url: https://wimlib.net/git/?a=blobdiff_plain;f=src%2Fcompress_serial.c;h=6bac63ec8f9b2037bf720c82d69649264eddc006;hb=5db5a640a2efa34162f1aa5db6e81616dbd6d244;hp=0ae354834286b8e84db6987e7391df262f2df89e;hpb=883833a4b3dabec325edf1ca938000f91d587c00;p=wimlib

diff --git a/src/compress_serial.c b/src/compress_serial.c
index 0ae35483..6bac63ec 100644
--- a/src/compress_serial.c
+++ b/src/compress_serial.c
@@ -7,39 +7,39 @@
 /*
  * Copyright (C) 2013 Eric Biggers
  *
- * This file is part of wimlib, a library for working with WIM files.
+ * This file is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU Lesser General Public License as published by the Free
+ * Software Foundation; either version 3 of the License, or (at your option) any
+ * later version.
  *
- * wimlib is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free Software
- * Foundation; either version 3 of the License, or (at your option) any later
- * version.
+ * This file is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
+ * details.
  *
- * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
- * A PARTICULAR PURPOSE. See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * wimlib; if not, see http://www.gnu.org/licenses/.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this file; if not, see http://www.gnu.org/licenses/.
  */
 
 #ifdef HAVE_CONFIG_H
 #  include "config.h"
 #endif
 
+#include <string.h>
+
 #include "wimlib.h"
 #include "wimlib/assert.h"
 #include "wimlib/chunk_compressor.h"
 #include "wimlib/util.h"
 
-#include <string.h>
-
 struct serial_chunk_compressor {
 	struct chunk_compressor base;
 	struct wimlib_compressor *compressor;
 	u8 *udata;
 	u8 *cdata;
-	unsigned ulen;
-	unsigned clen;
+	u32 usize;
+	u8 *result_data;
+	u32 result_size;
 };
 
 static void
@@ -56,47 +56,52 @@ serial_chunk_compressor_destroy(struct chunk_compressor *_ctx)
 	FREE(ctx);
 }
 
-static bool
-serial_chunk_compressor_submit_chunk(struct chunk_compressor *_ctx,
-				     const void *chunk, size_t size)
+static void *
+serial_chunk_compressor_get_chunk_buffer(struct chunk_compressor *_ctx)
 {
 	struct serial_chunk_compressor *ctx = (struct serial_chunk_compressor*)_ctx;
 
-	if (ctx->ulen != 0)
-		return false;
+	if (ctx->result_data)
+		return NULL;
+	return ctx->udata;
+}
 
-	wimlib_assert(size > 0);
-	wimlib_assert(size <= ctx->base.out_chunk_size);
+static void
+serial_chunk_compressor_signal_chunk_filled(struct chunk_compressor *_ctx, u32 usize)
+{
+	struct serial_chunk_compressor *ctx = (struct serial_chunk_compressor*)_ctx;
+	u32 csize;
 
-	memcpy(ctx->udata, chunk, size);
-	ctx->ulen = size;
-	return true;
+	wimlib_assert(usize > 0);
+	wimlib_assert(usize <= ctx->base.out_chunk_size);
+
+	ctx->usize = usize;
+	csize = wimlib_compress(ctx->udata, usize, ctx->cdata, usize - 1,
+				ctx->compressor);
+	if (csize) {
+		ctx->result_data = ctx->cdata;
+		ctx->result_size = csize;
+	} else {
+		ctx->result_data = ctx->udata;
+		ctx->result_size = ctx->usize;
+	}
 }
 
 static bool
-serial_chunk_compressor_get_chunk(struct chunk_compressor *_ctx,
-				  const void **cdata_ret, unsigned *csize_ret,
-				  unsigned *usize_ret)
+serial_chunk_compressor_get_compression_result(struct chunk_compressor *_ctx,
+					       const void **cdata_ret, u32 *csize_ret,
+					       u32 *usize_ret)
 {
-	struct serial_chunk_compressor *ctx = (struct serial_chunk_compressor*)_ctx;
+	struct serial_chunk_compressor *ctx = (struct serial_chunk_compressor *)_ctx;
 
-	if (ctx->ulen == 0)
+	if (!ctx->result_data)
 		return false;
 
-	ctx->clen = wimlib_compress(ctx->udata, ctx->ulen,
-				    ctx->cdata, ctx->ulen - 1,
-				    ctx->compressor);
+	*cdata_ret = ctx->result_data;
+	*csize_ret = ctx->result_size;
+	*usize_ret = ctx->usize;
 
-	if (ctx->clen) {
-		*cdata_ret = ctx->cdata;
-		*csize_ret = ctx->clen;
-	} else {
-		*cdata_ret = ctx->udata;
-		*csize_ret = ctx->ulen;
-	}
-	*usize_ret = ctx->ulen;
-
-	ctx->ulen = 0;
+	ctx->result_data = NULL;
 	return true;
 }
 
@@ -107,6 +112,8 @@ new_serial_chunk_compressor(int out_ctype, u32 out_chunk_size,
 	struct serial_chunk_compressor *ctx;
 	int ret;
 
+	wimlib_assert(out_chunk_size > 0);
+
 	ctx = CALLOC(1, sizeof(*ctx));
 	if (ctx == NULL)
 		return WIMLIB_ERR_NOMEM;
@@ -115,22 +122,23 @@ new_serial_chunk_compressor(int out_ctype, u32 out_chunk_size,
 	ctx->base.out_chunk_size = out_chunk_size;
 	ctx->base.num_threads = 1;
 	ctx->base.destroy = serial_chunk_compressor_destroy;
-	ctx->base.submit_chunk = serial_chunk_compressor_submit_chunk;
-	ctx->base.get_chunk = serial_chunk_compressor_get_chunk;
-
+	ctx->base.get_chunk_buffer = serial_chunk_compressor_get_chunk_buffer;
+	ctx->base.signal_chunk_filled = serial_chunk_compressor_signal_chunk_filled;
+	ctx->base.get_compression_result = serial_chunk_compressor_get_compression_result;
 
 	ret = wimlib_create_compressor(out_ctype, out_chunk_size,
-				       NULL, &ctx->compressor);
+				       WIMLIB_COMPRESSOR_FLAG_DESTRUCTIVE,
+				       &ctx->compressor);
 	if (ret)
 		goto err;
 
 	ctx->udata = MALLOC(out_chunk_size);
 	ctx->cdata = MALLOC(out_chunk_size - 1);
-	ctx->ulen = 0;
 	if (ctx->udata == NULL || ctx->cdata == NULL) {
 		ret = WIMLIB_ERR_NOMEM;
 		goto err;
 	}
+	ctx->result_data = NULL;
 
 	*compressor_ret = &ctx->base;
 	return 0;