TODO cleanup: Remove unused buffer_size

Remove unused variable buffer_size and rename bytes_in_buffer to
buffer_size in webm_read_frame.

Change-Id: I18b6ccbb044cd366610a5e39d83883cc0b174051

test/webm_video_source.h

@@ -62,7 +62,7 @@ class WebMVideoSource : public CompressedVideoSource {
 
   void FillFrame() {
     ASSERT_TRUE(vpx_ctx_->file != NULL);
-    const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_, &buf_sz_);
+    const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_);
     ASSERT_GE(status, 0) << "webm_read_frame failed";
     if (status == 1) {
       end_of_file_ = true;
@@ -72,7 +72,7 @@ class WebMVideoSource : public CompressedVideoSource {
   void SeekToNextKeyFrame() {
     ASSERT_TRUE(vpx_ctx_->file != NULL);
     do {
-      const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_, &buf_sz_);
+      const int status = webm_read_frame(webm_ctx_, &buf_, &buf_sz_);
       ASSERT_GE(status, 0) << "webm_read_frame failed";
       ++frame_;
       if (status == 1) {

vpxdec.c

@@ -257,8 +257,7 @@ static int read_frame(struct VpxDecInputContext *input, uint8_t **buf,
   switch (input->vpx_input_ctx->file_type) {
 #if CONFIG_WEBM_IO
     case FILE_TYPE_WEBM:
-      return webm_read_frame(input->webm_ctx,
-                             buf, bytes_in_buffer, buffer_size);
+      return webm_read_frame(input->webm_ctx, buf, bytes_in_buffer);
 #endif
     case FILE_TYPE_RAW:
       return raw_read_frame(input->vpx_input_ctx->file,

webmdec.cc

@@ -122,7 +122,6 @@ int file_is_webm(struct WebmInputContext *webm_ctx,
 
 int webm_read_frame(struct WebmInputContext *webm_ctx,
                     uint8_t **buffer,
-                    size_t *bytes_in_buffer,
                     size_t *buffer_size) {
   // This check is needed for frame parallel decoding, in which case this
   // function could be called even after it has reached end of input stream.
@@ -147,7 +146,7 @@ int webm_read_frame(struct WebmInputContext *webm_ctx,
     } else if (block_entry_eos || block_entry->EOS()) {
       cluster = segment->GetNext(cluster);
       if (cluster == NULL || cluster->EOS()) {
-        *bytes_in_buffer = 0;
+        *buffer_size = 0;
         webm_ctx->reached_eos = 1;
         return 1;
       }
@@ -187,10 +186,9 @@ int webm_read_frame(struct WebmInputContext *webm_ctx,
     if (*buffer == NULL) {
       return -1;
     }
-    *buffer_size = frame.len;
     webm_ctx->buffer = *buffer;
   }
-  *bytes_in_buffer = frame.len;
+  *buffer_size = frame.len;
   webm_ctx->timestamp_ns = block->GetTime(cluster);
   webm_ctx->is_key_frame = block->IsKey();
 
@@ -203,10 +201,9 @@ int webm_guess_framerate(struct WebmInputContext *webm_ctx,
                          struct VpxInputContext *vpx_ctx) {
   uint32_t i = 0;
   uint8_t *buffer = NULL;
-  size_t bytes_in_buffer = 0;
   size_t buffer_size = 0;
   while (webm_ctx->timestamp_ns < 1000000000 && i < 50) {
-    if (webm_read_frame(webm_ctx, &buffer, &bytes_in_buffer, &buffer_size)) {
+    if (webm_read_frame(webm_ctx, &buffer, &buffer_size)) {
       break;
     }
     ++i;

webmdec.h

@@ -42,13 +42,12 @@ int file_is_webm(struct WebmInputContext *webm_ctx,
 
 // Reads a WebM Video Frame. Memory for the buffer is created, owned and managed
 // by this function. For the first call, |buffer| should be NULL and
-// |*bytes_in_buffer| should be 0. Once all the frames are read and used,
+// |*buffer_size| should be 0. Once all the frames are read and used,
 // webm_free() should be called, otherwise there will be a leak.
 // Parameters:
 //      webm_ctx - WebmInputContext object
 //      buffer - pointer where the frame data will be filled.
-//      bytes_in_buffer - pointer to buffer size.
-//      buffer_size - unused TODO(vigneshv): remove this
+//      buffer_size - pointer to buffer size.
 // Return values:
 //      0 - Success
 //      1 - End of Stream
@@ -57,7 +56,6 @@ int file_is_webm(struct WebmInputContext *webm_ctx,
 // this file.
 int webm_read_frame(struct WebmInputContext *webm_ctx,
                     uint8_t **buffer,
-                    size_t *bytes_in_buffer,
                     size_t *buffer_size);
 
 // Guesses the frame rate of the input file based on the container timestamps.