gecko-dev/dom/media/webm/WebMDecoder.cpp
Nicholas Nethercote 18fae65f38 Bug 1563139 - Remove StaticPrefs.h. r=glandium
This requires replacing inclusions of it with inclusions of more specific prefs
files.

The exception is that StaticPrefsAll.h, which is equivalent to StaticPrefs.h,
and is used in `Codegen.py` because doing something smarter is tricky and
suitable for a follow-up. As a result, any change to StaticPrefList.yaml will
still trigger recompilation of all the generated DOM bindings files, but that's
still a big improvement over trigger recompilation of every file that uses
static prefs.

Most of the changes in this commit are very boring. The only changes that are
not boring are modules/libpref/*, Codegen.py, and ServoBindings.toml.

Differential Revision: https://phabricator.services.mozilla.com/D39138

--HG--
extra : moz-landing-system : lando
2019-07-26 01:10:23 +00:00

124 lines
3.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebMDecoder.h"
#include "mozilla/Move.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs_media.h"
#ifdef MOZ_AV1
# include "AOMDecoder.h"
#endif
#include "MediaContainerType.h"
#include "PDMFactory.h"
#include "VideoUtils.h"
namespace mozilla {
/* static */
nsTArray<UniquePtr<TrackInfo>> WebMDecoder::GetTracksInfo(
const MediaContainerType& aType, MediaResult& aError) {
nsTArray<UniquePtr<TrackInfo>> tracks;
const bool isVideo = aType.Type() == MEDIAMIMETYPE("video/webm");
if (aType.Type() != MEDIAMIMETYPE("audio/webm") && !isVideo) {
aError = MediaResult(
NS_ERROR_DOM_MEDIA_FATAL_ERR,
RESULT_DETAIL("Invalid type:%s", aType.Type().AsString().get()));
return tracks;
}
aError = NS_OK;
const MediaCodecs& codecs = aType.ExtendedType().Codecs();
if (codecs.IsEmpty()) {
return tracks;
}
for (const auto& codec : codecs.Range()) {
if (codec.EqualsLiteral("opus") || codec.EqualsLiteral("vorbis")) {
tracks.AppendElement(
CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
NS_LITERAL_CSTRING("audio/") + NS_ConvertUTF16toUTF8(codec),
aType));
continue;
}
if (isVideo) {
UniquePtr<TrackInfo> trackInfo;
if (IsVP9CodecString(codec)) {
trackInfo = CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
NS_LITERAL_CSTRING("video/vp9"), aType);
} else if (IsVP8CodecString(codec)) {
trackInfo = CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
NS_LITERAL_CSTRING("video/vp8"), aType);
}
if (trackInfo) {
uint8_t profile = 0;
uint8_t level = 0;
uint8_t bitDepth = 0;
if (ExtractVPXCodecDetails(codec, profile, level, bitDepth)) {
trackInfo->GetAsVideoInfo()->mColorDepth =
gfx::ColorDepthForBitDepth(bitDepth);
}
tracks.AppendElement(std::move(trackInfo));
continue;
}
}
#ifdef MOZ_AV1
if (StaticPrefs::media_av1_enabled() && IsAV1CodecString(codec)) {
tracks.AppendElement(
CreateTrackInfoWithMIMETypeAndContainerTypeExtraParameters(
NS_LITERAL_CSTRING("video/av1"), aType));
continue;
}
#endif
// Unknown codec
aError = MediaResult(
NS_ERROR_DOM_MEDIA_FATAL_ERR,
RESULT_DETAIL("Unknown codec:%s", NS_ConvertUTF16toUTF8(codec).get()));
}
return tracks;
}
/* static */
bool WebMDecoder::IsSupportedType(const MediaContainerType& aContainerType) {
if (!StaticPrefs::media_webm_enabled()) {
return false;
}
MediaResult rv = NS_OK;
auto tracks = GetTracksInfo(aContainerType, rv);
if (NS_FAILED(rv)) {
return false;
}
if (tracks.IsEmpty()) {
// WebM guarantees that the only codecs it contained are vp8, vp9, opus or
// vorbis.
return true;
}
// Verify that we have a PDM that supports the whitelisted types, include
// color depth
RefPtr<PDMFactory> platform = new PDMFactory();
for (const auto& track : tracks) {
if (!track || !platform->Supports(*track, nullptr /* diagnostic */)) {
return false;
}
}
return true;
}
/* static */
nsTArray<UniquePtr<TrackInfo>> WebMDecoder::GetTracksInfo(
const MediaContainerType& aType) {
MediaResult rv = NS_OK;
return GetTracksInfo(aType, rv);
}
} // namespace mozilla