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Bug 1219047 - Call rust mp4parser with logging. r=kinetik

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Add a helper for passing the initialization segments
of mp4 streams to the rust parser and log the result.

This runs real data through the new parser for testing
but doesn't use the results.

Code is conditional on MOZ_RUST_MP4PARSE to be defined
in confvars.sh. See bug 1219530.
This commit is contained in:
Ralph Giles 2015-11-02 11:39:00 -08:00
parent d8ac6a8660
commit 0f8b14b1fe
1 changed files with 35 additions and 0 deletions
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35
media/libstagefright/binding/MP4Metadata.cpp
View File

@ -13,6 +13,7 @@
#include <limits>
#include <stdint.h>
#include <vector>
using namespace stagefright;
@ -106,9 +107,43 @@ MP4Metadata::~MP4Metadata()
{
}
#ifdef MOZ_RUST_MP4PARSE
#include "mp4parse.h"
// Helper to test the rust parser on a data source.
static bool try_rust(RefPtr<Stream> aSource)
{
int64_t length;
if (!aSource->Length(&length)) {
fprintf(stderr, "Couldn't get source length\n");
return false;
}
fprintf(stderr, "Source length %d bytes\n", (long long int)length);
if (length <= 0) {
return false;
}
size_t bytes_read = 0;
auto buffer = std::vector<uint8_t>(length);
bool rv = aSource->ReadAt(0, buffer.data(), length, &bytes_read);
if (!rv || bytes_read != size_t(length)) {
fprintf(stderr, "Error copying mp4 data\n");
return false;
}
auto context = mp4parse_new();
int32_t tracks = mp4parse_read(context, buffer.data(), bytes_read);
mp4parse_free(context);
fprintf(stderr, "rust parser found %d tracks\n", int(tracks));
return true;
}
#endif
uint32_t
MP4Metadata::GetNumberTracks(mozilla::TrackInfo::TrackType aType) const
{
#ifdef MOZ_RUST_MP4PARSE
// Try in rust first.
try_rust(mSource);
#endif
size_t tracks = mPrivate->mMetadataExtractor->countTracks();
uint32_t total = 0;
for (size_t i = 0; i < tracks; i++) {