webrtc_m130/media/engine/internaldecoderfactory.cc
Magnus Jedvert d528ad542e Make internal video decoder factory more resilient to incorrect usage
If SW H264 is not supported and a client tries to create such a
decoder from InternalDecoderFactory, we currently crash. This CL
changes so that we log an error and return null from CreateDecoder()
instead.

Bug: webrtc:7925
Change-Id: I0c495f62dae25ac0bf4931c02527eb9977db3d92
Reviewed-on: https://webrtc-review.googlesource.com/92395
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#24220}
2018-08-08 09:06:26 +00:00

70 lines
2.2 KiB
C++

/*
* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "media/engine/internaldecoderfactory.h"
#include "api/video_codecs/sdp_video_format.h"
#include "media/base/mediaconstants.h"
#include "modules/video_coding/codecs/h264/include/h264.h"
#include "modules/video_coding/codecs/vp8/include/vp8.h"
#include "modules/video_coding/codecs/vp9/include/vp9.h"
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
namespace webrtc {
namespace {
bool IsFormatSupported(
const std::vector<webrtc::SdpVideoFormat>& supported_formats,
const webrtc::SdpVideoFormat& format) {
for (const webrtc::SdpVideoFormat& supported_format : supported_formats) {
if (cricket::IsSameCodec(format.name, format.parameters,
supported_format.name,
supported_format.parameters)) {
return true;
}
}
return false;
}
} // namespace
std::vector<SdpVideoFormat> InternalDecoderFactory::GetSupportedFormats()
const {
std::vector<SdpVideoFormat> formats;
formats.push_back(SdpVideoFormat(cricket::kVp8CodecName));
for (const SdpVideoFormat& format : SupportedVP9Codecs())
formats.push_back(format);
for (const SdpVideoFormat& h264_format : SupportedH264Codecs())
formats.push_back(h264_format);
return formats;
}
std::unique_ptr<VideoDecoder> InternalDecoderFactory::CreateVideoDecoder(
const SdpVideoFormat& format) {
if (!IsFormatSupported(GetSupportedFormats(), format)) {
RTC_LOG(LS_ERROR) << "Trying to create decoder for unsupported format";
return nullptr;
}
if (cricket::CodecNamesEq(format.name, cricket::kVp8CodecName))
return VP8Decoder::Create();
if (cricket::CodecNamesEq(format.name, cricket::kVp9CodecName))
return VP9Decoder::Create();
if (cricket::CodecNamesEq(format.name, cricket::kH264CodecName))
return H264Decoder::Create();
RTC_NOTREACHED();
return nullptr;
}
} // namespace webrtc