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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/common/extensions/api/speech/tts_engine_manifest_handler.h"
#include <stddef.h>
#include <memory>
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/manifest.h"
#include "extensions/common/manifest_constants.h"
#include "media/base/limits.h"
#include "ui/base/l10n/l10n_util.h"
namespace extensions {
namespace keys = manifest_keys;
namespace errors = manifest_errors;
TtsVoice::TtsVoice() : remote(false) {}
TtsVoice::TtsVoice(const TtsVoice& other) = default;
TtsVoice::~TtsVoice() = default;
TtsVoices::TtsVoices() = default;
TtsVoices::~TtsVoices() = default;
// static
bool TtsVoices::Parse(const base::Value::List& tts_voices,
TtsVoices* out_voices,
std::u16string* error,
Extension* extension) {
for (const base::Value& one_tts_voice_val : tts_voices) {
if (!one_tts_voice_val.is_dict()) {
*error = errors::kInvalidTtsVoices;
return false;
}
const base::Value::Dict& one_tts_voice = one_tts_voice_val.GetDict();
TtsVoice voice_data;
const base::Value* name = one_tts_voice.Find(keys::kTtsVoicesVoiceName);
if (name) {
if (!name->is_string()) {
*error = errors::kInvalidTtsVoicesVoiceName;
return false;
}
voice_data.voice_name = name->GetString();
}
const base::Value* lang = one_tts_voice.Find(keys::kTtsVoicesLang);
if (lang) {
if (!lang->is_string() ||
!l10n_util::IsValidLocaleSyntax(lang->GetString())) {
*error = errors::kInvalidTtsVoicesLang;
return false;
}
voice_data.lang = lang->GetString();
}
const base::Value* remote = one_tts_voice.Find(keys::kTtsVoicesRemote);
if (remote) {
if (!remote->is_bool()) {
*error = errors::kInvalidTtsVoicesRemote;
return false;
}
voice_data.remote = remote->GetBool();
}
const base::Value* event_types =
one_tts_voice.Find(keys::kTtsVoicesEventTypes);
if (event_types) {
if (!event_types->is_list()) {
*error = errors::kInvalidTtsVoicesEventTypes;
return false;
}
for (const base::Value& event_type_val : event_types->GetList()) {
if (!event_type_val.is_string()) {
*error = errors::kInvalidTtsVoicesEventTypes;
return false;
}
const std::string& event_type = event_type_val.GetString();
if (event_type != keys::kTtsVoicesEventTypeEnd &&
event_type != keys::kTtsVoicesEventTypeError &&
event_type != keys::kTtsVoicesEventTypeMarker &&
event_type != keys::kTtsVoicesEventTypeSentence &&
event_type != keys::kTtsVoicesEventTypeStart &&
event_type != keys::kTtsVoicesEventTypeWord) {
*error = errors::kInvalidTtsVoicesEventTypes;
return false;
}
if (voice_data.event_types.find(event_type) !=
voice_data.event_types.end()) {
*error = errors::kInvalidTtsVoicesEventTypes;
return false;
}
voice_data.event_types.insert(event_type);
}
}
out_voices->voices.push_back(voice_data);
}
return true;
}
// static
const std::vector<TtsVoice>* TtsVoices::GetTtsVoices(
const Extension* extension) {
const TtsVoices* engine = TtsVoices::GetTtsEngineInfo(extension);
return engine ? &engine->voices : nullptr;
}
// static
const TtsVoices* TtsVoices::GetTtsEngineInfo(const Extension* extension) {
TtsVoices* info =
static_cast<TtsVoices*>(extension->GetManifestData(keys::kTtsVoices));
return info;
}
TtsEngineManifestHandler::TtsEngineManifestHandler() = default;
TtsEngineManifestHandler::~TtsEngineManifestHandler() = default;
bool TtsEngineManifestHandler::Parse(Extension* extension,
std::u16string* error) {
auto info = std::make_unique<TtsVoices>();
const base::Value::Dict* tts_dict =
extension->manifest()->available_values().FindDict(keys::kTtsEngine);
if (!tts_dict) {
*error = errors::kInvalidTts;
return false;
}
const base::Value* tts_voices = tts_dict->Find(keys::kTtsVoices);
if (!tts_voices)
return true;
if (!tts_voices->is_list()) {
*error = errors::kInvalidTtsVoices;
return false;
}
if (!TtsVoices::Parse(tts_voices->GetList(), info.get(), error, extension))
return false;
const base::Value* tts_engine_sample_rate =
tts_dict->Find(keys::kTtsEngineSampleRate);
if (tts_engine_sample_rate) {
if (!tts_engine_sample_rate->GetIfInt()) {
*error = errors::kInvalidTtsSampleRateFormat;
return false;
}
info->sample_rate = tts_engine_sample_rate->GetInt();
if (info->sample_rate < media::limits::kMinSampleRate ||
info->sample_rate > media::limits::kMaxSampleRate) {
*error = base::ASCIIToUTF16(base::StringPrintf(
errors::kInvalidTtsSampleRateRange, media::limits::kMinSampleRate,
media::limits::kMaxSampleRate));
return false;
}
}
const base::Value* tts_engine_buffer_size =
tts_dict->Find(keys::kTtsEngineBufferSize);
if (tts_engine_buffer_size) {
if (!tts_engine_buffer_size->GetIfInt()) {
*error = errors::kInvalidTtsBufferSizeFormat;
return false;
}
// The limits of the buffer size should match those of those found in
// AudioParameters::IsValid (as should the sample rate limits above).
constexpr int kMinBufferSize = 1;
info->buffer_size = tts_engine_buffer_size->GetInt();
if (info->buffer_size < kMinBufferSize ||
info->buffer_size > media::limits::kMaxSamplesPerPacket) {
*error = base::ASCIIToUTF16(
base::StringPrintf(errors::kInvalidTtsBufferSizeRange, kMinBufferSize,
media::limits::kMaxSamplesPerPacket));
return false;
}
}
if ((!tts_engine_sample_rate && tts_engine_buffer_size) ||
(tts_engine_sample_rate && !tts_engine_buffer_size)) {
*error = errors::kInvalidTtsRequiresSampleRateAndBufferSize;
return false;
}
extension->SetManifestData(keys::kTtsVoices, std::move(info));
return true;
}
base::span<const char* const> TtsEngineManifestHandler::Keys() const {
static constexpr const char* kKeys[] = {keys::kTtsEngine};
return kKeys;
}
} // namespace extensions
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