1 /*
2 * Copyright (C) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "audio_ffmpeg_amrnb_decoder_plugin.h"
17 #include <set>
18 #include "avcodec_errors.h"
19 #include "avcodec_log.h"
20 #include "media_description.h"
21 #include "avcodec_mime_type.h"
22 #include "avcodec_audio_common.h"
23 #include "ffmpeg_converter.h"
24
25 namespace {
26 constexpr OHOS::HiviewDFX::HiLogLabel LABEL = {LOG_CORE, LOG_DOMAIN_AUDIO, "AvCodec-AudioFFMpegAmrnbDecoderPlugin"};
27 constexpr int SUPPORT_CHANNELS = 1;
28 constexpr int SUPPORT_SAMPLE_RATE = 8000;
29 constexpr AVSampleFormat DEFAULT_FFMPEG_SAMPLE_FORMAT = AV_SAMPLE_FMT_S16;
30 constexpr int INPUT_BUFFER_SIZE_DEFAULT = 150;
31 constexpr int OUTPUT_BUFFER_SIZE_DEFAULT = 1280;
32 static std::set<OHOS::MediaAVCodec::AudioSampleFormat> supportedSampleFormats = {
33 OHOS::MediaAVCodec::AudioSampleFormat::SAMPLE_S16LE,
34 OHOS::MediaAVCodec::AudioSampleFormat::SAMPLE_F32LE};
35 } // namespace
36
37 namespace OHOS {
38 namespace MediaAVCodec {
39 constexpr std::string_view AUDIO_CODEC_NAME = "amrnb";
AudioFFMpegAmrnbDecoderPlugin()40 AudioFFMpegAmrnbDecoderPlugin::AudioFFMpegAmrnbDecoderPlugin()
41 : basePlugin(std::make_unique<AudioFfmpegDecoderPlugin>())
42 {
43 channels = 0;
44 sampleRate = 0;
45 bitRate = 0;
46 }
47
~AudioFFMpegAmrnbDecoderPlugin()48 AudioFFMpegAmrnbDecoderPlugin::~AudioFFMpegAmrnbDecoderPlugin()
49 {
50 basePlugin->Release();
51 basePlugin.reset();
52 basePlugin = nullptr;
53 }
54
Init(const Format & format)55 int32_t AudioFFMpegAmrnbDecoderPlugin::Init(const Format &format)
56 {
57 int32_t ret = basePlugin->AllocateContext("amrnb");
58 int32_t checkresult = AudioFFMpegAmrnbDecoderPlugin::Checkinit(format);
59 if (checkresult != AVCodecServiceErrCode::AVCS_ERR_OK) {
60 return checkresult;
61 }
62 if (ret != AVCodecServiceErrCode::AVCS_ERR_OK) {
63 AVCODEC_LOGE("amrwb init error.");
64 return ret;
65 }
66 ret = basePlugin->InitContext(format);
67 if (ret != AVCodecServiceErrCode::AVCS_ERR_OK) {
68 AVCODEC_LOGE("amrwb init error.");
69 return ret;
70 }
71 return basePlugin->OpenContext();
72 }
73
ProcessSendData(const std::shared_ptr<AudioBufferInfo> & inputBuffer)74 int32_t AudioFFMpegAmrnbDecoderPlugin::ProcessSendData(const std::shared_ptr<AudioBufferInfo> &inputBuffer)
75 {
76 return basePlugin->ProcessSendData(inputBuffer);
77 }
78
ProcessRecieveData(std::shared_ptr<AudioBufferInfo> & outBuffer)79 int32_t AudioFFMpegAmrnbDecoderPlugin::ProcessRecieveData(std::shared_ptr<AudioBufferInfo> &outBuffer)
80 {
81 return basePlugin->ProcessRecieveData(outBuffer);
82 }
83
Reset()84 int32_t AudioFFMpegAmrnbDecoderPlugin::Reset()
85 {
86 return basePlugin->Reset();
87 }
88
Release()89 int32_t AudioFFMpegAmrnbDecoderPlugin::Release()
90 {
91 return basePlugin->Release();
92 }
93
Flush()94 int32_t AudioFFMpegAmrnbDecoderPlugin::Flush()
95 {
96 return basePlugin->Flush();
97 }
98
GetInputBufferSize() const99 int32_t AudioFFMpegAmrnbDecoderPlugin::GetInputBufferSize() const
100 {
101 int32_t maxSize = basePlugin->GetMaxInputSize();
102 if (maxSize < 0 || maxSize > INPUT_BUFFER_SIZE_DEFAULT) {
103 maxSize = INPUT_BUFFER_SIZE_DEFAULT;
104 }
105 return maxSize;
106 }
107
GetOutputBufferSize() const108 int32_t AudioFFMpegAmrnbDecoderPlugin::GetOutputBufferSize() const
109 {
110 return OUTPUT_BUFFER_SIZE_DEFAULT;
111 }
112
GetFormat() const113 Format AudioFFMpegAmrnbDecoderPlugin::GetFormat() const noexcept
114 {
115 auto format = basePlugin->GetFormat();
116 format.PutStringValue(MediaDescriptionKey::MD_KEY_CODEC_MIME, AVCodecMimeType::MEDIA_MIMETYPE_AUDIO_MPEG);
117 return format;
118 }
119
Checkinit(const Format & format)120 int32_t AudioFFMpegAmrnbDecoderPlugin::Checkinit(const Format &format)
121 {
122 format.GetIntValue(MediaDescriptionKey::MD_KEY_CHANNEL_COUNT, channels);
123 format.GetIntValue(MediaDescriptionKey::MD_KEY_SAMPLE_RATE, sampleRate);
124 format.GetLongValue(MediaDescriptionKey::MD_KEY_BITRATE, bitRate);
125 if (channels != SUPPORT_CHANNELS) {
126 return AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL;
127 }
128
129 if (sampleRate != SUPPORT_SAMPLE_RATE) {
130 return AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL;
131 }
132 if (!CheckSampleFormat(format)) {
133 return AVCodecServiceErrCode::AVCS_ERR_INVALID_VAL;
134 }
135 return AVCodecServiceErrCode::AVCS_ERR_OK;
136 }
137
CheckSampleFormat(const Format & format)138 bool AudioFFMpegAmrnbDecoderPlugin::CheckSampleFormat(const Format &format)
139 {
140 int32_t sampleFormat;
141 if (!format.GetIntValue(MediaDescriptionKey::MD_KEY_AUDIO_SAMPLE_FORMAT, sampleFormat)) {
142 AVCODEC_LOGW("Sample format missing, set to default s16le");
143 basePlugin->EnableResample(DEFAULT_FFMPEG_SAMPLE_FORMAT);
144 return true;
145 }
146 if (supportedSampleFormats.find(static_cast<AudioSampleFormat>(sampleFormat)) == supportedSampleFormats.end()) {
147 AVCODEC_LOGE("Output sample format not support");
148 return false;
149 }
150 if (sampleFormat == SAMPLE_F32LE) {
151 return true;
152 }
153 auto destFmt = FFMpegConverter::ConvertOHAudioFormatToFFMpeg(static_cast<AudioSampleFormat>(sampleFormat));
154 basePlugin->EnableResample(destFmt);
155 return true;
156 }
157
GetCodecType() const158 std::string_view AudioFFMpegAmrnbDecoderPlugin::GetCodecType() const noexcept
159 {
160 return AUDIO_CODEC_NAME;
161 }
162 } // namespace MediaAVCodec
163 } // namespace OHOS