public inbox for devel@edk2.groups.io
 help / color / mirror / Atom feed
* [PATCH 1/1] BaseTools/Brotli: Fix compressed data loss issue
@ 2021-05-14  6:04 Yuwei Chen
  2021-05-14  7:56 ` [edk2-devel] " Bob Feng
  2021-05-14  7:58 ` Bob Feng
  0 siblings, 2 replies; 4+ messages in thread
From: Yuwei Chen @ 2021-05-14  6:04 UTC (permalink / raw)
  To: devel; +Cc: Bob Feng, Liming Gao

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2946

Currenly, when using the Brotli tool to compress data, the output
compressed binary file does not record complete compressed data
when size of input file is too large, which makes the data loss and
will trigger decompress-check issue.

The Brotli document mentioned:
The brotli tool use BrotliEncoderCompressStream method to compresses
input stream to output stream. Under some circumstances (e.g. lack of
output stream capacity) the BrotliEncoderOperation would require
several calls to BrotliEncoderCompressStream. The method must be
called again until both input stream is depleted and encoder has no
more output after the method is called.

This patch fixes this issue based on the Brotli document.

Cc: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Yuwei Chen <yuwei.chen@intel.com>
---
 .../Source/C/BrotliCompress/BrotliCompress.c  | 61 ++++++++++++-------
 1 file changed, 38 insertions(+), 23 deletions(-)

diff --git a/BaseTools/Source/C/BrotliCompress/BrotliCompress.c b/BaseTools/Source/C/BrotliCompress/BrotliCompress.c
index 5a1400fda310..62a6aed3dbd0 100644
--- a/BaseTools/Source/C/BrotliCompress/BrotliCompress.c
+++ b/BaseTools/Source/C/BrotliCompress/BrotliCompress.c
@@ -156,6 +156,7 @@ int CompressFile(char *InputFile, uint8_t *InputBuffer, char *OutputFile, uint8_
   uint8_t *NextOut;
   uint8_t *Input;
   uint8_t *Output;
+  size_t TotalOut;
   size_t OutSize;
   uint32_t SizeHint;
   BROTLI_BOOL IsOk;
@@ -214,39 +215,53 @@ int CompressFile(char *InputFile, uint8_t *InputBuffer, char *OutputFile, uint8_
       IsEof = !HasMoreInput(InputFileHandle);
     }
 
-    if (!BrotliEncoderCompressStream(EncodeState,
-      IsEof ? BROTLI_OPERATION_FINISH : BROTLI_OPERATION_PROCESS,
-      &AvailableIn, &NextIn, &AvailableOut, &NextOut, NULL)) {
-        printf("Failed to compress data [%s]\n", InputFile);
-        IsOk = BROTLI_FALSE;
-        goto Finish;
-    }
-    if (AvailableOut == 0) {
-      OutSize = (size_t)(NextOut - Output);
-      if (OutSize > 0) {
-        fwrite(Output, 1, OutSize, OutputFileHandle);
-        if (ferror(OutputFileHandle)) {
-          printf("Failed to write output [%s]\n", OutputFile);
+    if (!IsEof){
+      do{
+        if (!BrotliEncoderCompressStream(EncodeState,
+        BROTLI_OPERATION_FLUSH,
+        &AvailableIn, &NextIn, &AvailableOut, &NextOut, &TotalOut)) {
+          printf("Failed to compress data [%s]\n", InputFile);
           IsOk = BROTLI_FALSE;
           goto Finish;
         }
+        OutSize = (size_t)(NextOut - Output);
+        if (OutSize > 0) {
+          fwrite(Output, 1, OutSize, OutputFileHandle);
+          if (ferror(OutputFileHandle)) {
+            printf("Failed to write output [%s]\n", OutputFile);
+            IsOk = BROTLI_FALSE;
+            goto Finish;
+          }
+        }
+        NextOut = Output;
+        AvailableOut = kFileBufferSize;
       }
-      AvailableOut = kFileBufferSize;
-      NextOut = Output;
+      while (AvailableIn > 0 || BrotliEncoderHasMoreOutput(EncodeState));
     }
-    if (BrotliEncoderIsFinished(EncodeState)) {
-      OutSize = (size_t)(NextOut - Output);
-      if (OutSize > 0) {
-        fwrite(Output, 1, OutSize, OutputFileHandle);
-        if (ferror(OutputFileHandle)) {
-          printf("Failed to write output [%s]\n", OutputFile);
+    else{
+      do{
+        if (!BrotliEncoderCompressStream(EncodeState,
+        BROTLI_OPERATION_FINISH,
+        &AvailableIn, &NextIn, &AvailableOut, &NextOut, &TotalOut)) {
+          printf("Failed to compress data [%s]\n", InputFile);
           IsOk = BROTLI_FALSE;
           goto Finish;
         }
-        AvailableOut = 0;
+        OutSize = (size_t)(NextOut - Output);
+        if (OutSize > 0) {
+          fwrite(Output, 1, OutSize, OutputFileHandle);
+          if (ferror(OutputFileHandle)) {
+            printf("Failed to write output [%s]\n", OutputFile);
+            IsOk = BROTLI_FALSE;
+            goto Finish;
+          }
+        }
+        NextOut = Output;
+        AvailableOut = kFileBufferSize;
       }
+      while (AvailableIn > 0 || BrotliEncoderHasMoreOutput(EncodeState));
     }
-    if (IsEof) {
+    if (BrotliEncoderIsFinished(EncodeState)){
       break;
     }
   }
-- 
2.27.0.windows.1


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-05-17  3:18 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2021-05-14  6:04 [PATCH 1/1] BaseTools/Brotli: Fix compressed data loss issue Yuwei Chen
2021-05-14  7:56 ` [edk2-devel] " Bob Feng
2021-05-14  7:58 ` Bob Feng
2021-05-17  3:18   ` Bob Feng

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox