File: //home/parhudrw/saifookhan.com/wp-content/plugins/amazon-polly/admin/AmazonAI-PollyService.php
<?php
/**
* Class providers logic responsible for connecting with Amazon Polly Service
* and converting post text to audio.
*
* @link amazon.com
* @since 2.0.3
*
* @package Amazonpolly
* @subpackage Amazonpolly/admin
*/
class AmazonAI_PollyService {
const GENERATE_POST_AUDIO_TASK = 'generate_post_audio';
const NONCE_NAME = 'amazon-polly-post-nonce';
/**
* @var AmazonAI_Common
*/
private $common;
/**
* AmazonAI_PollyService constructor.
*
* @param AmazonAI_Common $common
*/
public function __construct(AmazonAI_Common $common) {
$this->common = $common;
}
/**
* Important. Run whenever new post is being created (or updated). The method generates a background task to generate the audio file.
*
* @since 1.0.0
*/
public function save_post( $post_id, $post, $updated ) {
$common = $this->common;
$logger = new AmazonAI_Logger();
$logger->log(sprintf('%s Saving post ( id=%s )', __METHOD__, $post_id));
// Check if this isn't an auto save.
if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {
return;
}
// Check to make sure this is not a new post creation.
if ( ! $updated ) {
return;
}
// Validate if this post which is being saved is one of supported types. If not, return.
$post_types_supported = $common->get_posttypes_array();
$post_type = get_post_type($post_id);
if ( !in_array($post_type, $post_types_supported) ) {
return;
}
// If nonce is valid then update post meta
// If it's not valid then this is probably a quick or bulk edit request in which case we won't update the polly post meta
if ( isset($_POST[self::NONCE_NAME]) && wp_verify_nonce($_POST[self::NONCE_NAME], 'amazon-polly') ) {
update_post_meta( $post_id, 'amazon_polly_enable', (int) isset($_POST['amazon_polly_enable']));
// If disabling post translation
if ( isset($_POST['amazon_ai_deactive_translation']) ) {
$common->deactive_translation_for_post($post_id);
}
// Update post voice ID
if ( isset( $_POST['amazon_polly_voice_id']) ) {
$voice_id = sanitize_text_field(wp_unslash($_POST['amazon_polly_voice_id']));
update_post_meta( $post_id, 'amazon_polly_voice_id', $voice_id);
}
}
if( ! ( wp_is_post_revision( $post_id) || wp_is_post_autosave( $post_id ) ) ) {
$logger->log(sprintf('%s Starting background task process ( id=%s )', __METHOD__, $post_id));
$background_task = new AmazonAI_BackgroundTask();
$background_task->trigger(self::GENERATE_POST_AUDIO_TASK, [ $post_id ]);
}
}
/**
* Important. Executes the Amazon Polly API to create audio file and save to the configured storage location
*
* @since 1.0.0
*/
public function generate_audio( $post_id ) {
$logger = new AmazonAI_Logger();
$logger->log(sprintf('%s Generating audio for post ( id=%s )', __METHOD__, $post_id));
/**
* Fires before attempting to generate and save the Amazon Polly audio files
*
* @param int $post_id The post id to generate audio files for
*/
do_action('amazon_polly_pre_generate_audio', $post_id);
// Creating new standard common object for interacting with other methods of the plugin.
$common = $this->common;
$is_polly_enabled = (bool) get_post_meta($post_id, 'amazon_polly_enable', true);
$is_key_valid = (bool) get_option('amazon_polly_valid_keys');
$voice_id = get_post_meta($post_id, 'amazon_polly_voice_id', true);
if ( $is_polly_enabled && $is_key_valid ) {
$logger->log(sprintf('%s Basic validation OK', __METHOD__));
// Sammple Rate
$sample_rate = $common->get_sample_rate();
// Cleaning text. Includes for example removing not supported characters etc.
$clean_text = $common->clean_text( $post_id, true, false);
$logger->log(sprintf('%s <<< Clean Text >>> ', __METHOD__));
$logger->log(sprintf('%s', $clean_text));
$logger->log(sprintf('%s __________', __METHOD__));
// Breaking text into smaller parts, which will be then send to Amazon Polly for conversion.
$sentences = $common->break_text( $clean_text );
// We will be operating on local file system for stiching files together.
$wp_filesystem = $common->prepare_wp_filesystem();
// Actual invocation of method which will call Amazon Polly API and create audio file.
$this->convert_to_audio( $post_id, $sample_rate, $voice_id, $sentences, $wp_filesystem, '' );
// Checking what was the source language of text and updating options for translate operations.
$source_language = $common->get_source_language();
update_post_meta( $post_id, 'amazon_polly_transcript_' . $source_language, $clean_text );
update_post_meta( $post_id, 'amazon_polly_transcript_source_lan', $source_language );
}
// Remove audio files and post meta (if existing) if Polly is not enabled
else if ( ! $is_polly_enabled ) {
$common->delete_post_audio( $post_id );
update_post_meta( $post_id, 'amazon_polly_audio_location', '' );
}
/**
* Fires after attempting to generate and save the Amazon Polly audio files
*
* @param int $post_id The post id to generate audio files for
*/
do_action('amazon_polly_post_generate_audio', $post_id, $is_polly_enabled);
}
/*
private function start_speech_synthesis_task($common, $post_id, $sample_rate, $voice_id, $sentences, $lang) {
$full_text = '';
// Iterating through each of text parts.
foreach ( $sentences as $key => $text_content ) {
// Remove all tags
$text_content = strip_tags($text_content);
// If plugin SSML support option is enabled, plugin will try to decode all SSML tags.
$text_content = $this->ssml_support($common, $text_content);
$full_text = $full_text . $text_content;
}
// Adding breaths sounds (if enabled).
$full_text = $this->add_breaths($common, $full_text);
// Adding special polly mark.
$full_text = $this->add_mark_tag($common, $full_text);
// Adding speak polly mark.
$full_text = $this->add_speak_tags($common, $full_text);
//Preparing Amazon Polly client object.
$polly_client = $common->get_polly_client();
$s3_prefix = 'asyn/';
if ( get_option('uploads_use_yearmonth_folders') ) {
$s3_prefix .= get_the_date( 'Y', $post_id ) . '/' . get_the_date( 'm', $post_id ) . "/";
}
$file_name = 'amazon_polly_' . $post_id . $lang . '.mp3';
//Preparing lexicons which will be used create audio.
$lexicons = $common->get_lexicons();
$lexicons_array = explode( ' ', $lexicons );
//Call Amazon Polly service.
if ( ! empty( $lexicons ) and ( count( $lexicons_array ) > 0 ) ) {
$result = $polly_client->startSpeechSynthesisTask(
array(
'OutputFormat' => 'mp3',
'SampleRate' => $sample_rate,
'Text' => $full_text,
'TextType' => 'ssml',
'VoiceId' => $voice_id,
'OutputS3BucketName' => $common->get_s3_bucket_name(),
'OutputS3KeyPrefix' => $s3_prefix . $file_name,
'LexiconNames' => $lexicons_array,
)
);
} else {
$result = $polly_client->startSpeechSynthesisTask(
array(
'OutputFormat' => 'mp3',
'SampleRate' => $sample_rate,
'Text' => $full_text,
'TextType' => 'ssml',
'VoiceId' => $voice_id,
'OutputS3BucketName' => $common->get_s3_bucket_name(),
'OutputS3KeyPrefix' => $s3_prefix . $file_name
)
);
}
// Saving audio file in final destination.
$audio_location_link = $common->get_s3_object_link($common, $post_id, $file_name);
// This will bust the browser cache when a content revision is made.
$audio_location_link = add_query_arg( 'version', time(), $audio_location_link );
// We are using a hash of these values to improve the speed of queries.
$amazon_polly_settings_hash = md5( $voice_id . $sample_rate . "s3" );
if ( $lang == '' ) {
update_post_meta( $post_id, 'amazon_polly_audio_link_location', $audio_location_link );
update_post_meta( $post_id, 'amazon_polly_audio_location', "s3" );
} else {
update_post_meta( $post_id, 'amazon_polly_translation_' . $lang, '1' );
}
// Update post meta data.
update_post_meta( $post_id, 'amazon_polly_enable', 1 );
update_post_meta( $post_id, 'amazon_polly_voice_id', $voice_id );
update_post_meta( $post_id, 'amazon_polly_sample_rate', $sample_rate );
update_post_meta( $post_id, 'amazon_polly_settings_hash', $amazon_polly_settings_hash );
}
*/
/**
* Method execute Amazon Polly API and convert content which was provided to audio file.
*
* @param string $post_id ID of the posts which is being converted.
* @param string $sample_rate Sample rate for speech conversion.
* @param string $voice_id Amazon Polly voice ID.
* @param string $sentences Sentences which should be converted to audio.
* @param string $wp_filesystem Reference to WP File system variable.
* @param string $lang Language
* @since 1.0.0
*/
public function convert_to_audio( $post_id, $sample_rate, $voice_id, $sentences, $wp_filesystem, $lang ) {
$logger = new AmazonAI_Logger();
$logger->log(sprintf('%s Converting to Audio', __METHOD__));
// Creating new standard common object for interacting with other methods of the plugin.
$common = $this->common;
// This part will be called only in case of translate opration and converting
// text into other languages (only then the last parameter is not empty).
// The last parameter of method specify language for which we are creating audio
foreach ($common->get_all_translatable_languages() as $language_code) {
if ( $language_code == $lang ) {
$voice_id = get_option( 'amazon_polly_trans_langs_' . $language_code . '_voice' );
}
}
if ( empty($voice_id) ) {
return;
}
// Just in case we check if sample rate is valid, if not we will set default value.
$sample_rate_values = array( '24000', '22050', '16000', '8000' );
if ( ! in_array( $sample_rate, $sample_rate_values, true ) ) {
$sample_rate = '24000';
}
// In case of asynchronous synthesis flow.
//$amazon_ai_asynchronous = apply_filters( '$amazon_ai_asynchronous', '' );
//if ( $amazon_ai_asynchronous ) {
// $this->start_speech_synthesis_task($common, $post_id, $sample_rate, $voice_id, $sentences, $lang);
// return;
//}
// Preparing locations and names of temporary files which will be used.
$random = rand(5, 10);
$upload_dir = wp_upload_dir()['basedir'];
$file_prefix = 'amazon_polly_';
$file_name = $file_prefix . $post_id . $lang . '.mp3';
$file_temp_full_name = trailingslashit($upload_dir) . 'temp_' . $file_name . $random;
$dir_final_full_name = trailingslashit($upload_dir);
if ( get_option('uploads_use_yearmonth_folders') ) {
$dir_final_full_name .= get_the_date( 'Y', $post_id ) . '/' . get_the_date( 'm', $post_id ) . "/";
}
$file_final_full_name = $dir_final_full_name . $file_name;
// Delete temporary file if already exists.
if ( $wp_filesystem->exists( $file_temp_full_name ) ) {
$wp_filesystem->delete( $file_temp_full_name );
}
// Delete final file if already exists.
if ( $wp_filesystem->exists( $file_final_full_name ) ) {
$wp_filesystem->delete( $file_final_full_name );
}
// We might be stiching multiple smaller audio files. This variable will
// be used to detact the first part.
$first_part = true;
// Iterating through each of text parts.
foreach ( $sentences as $key => $text_content ) {
$logger->log(sprintf('%s Part:', __METHOD__));
$logger->log(sprintf('%s', $text_content));
// Remove all tags
$text_content = strip_tags($text_content);
// Modify Speed
$text_content = $common->modify_sentence_speed($text_content);
// Adding breaths sounds (if enabled).
$text_content = $this->add_breaths($common, $text_content);
// If plugin SSML support option is enabled, plugin will try to decode all SSML tags.
$text_content = $this->ssml_support($common, $text_content);
// Adding special polly mark.
$text_content = $this->add_mark_tag($common, $text_content);
// Adding newscaster style tag
$text_content = $this->add_newscaster_tag($common, $text_content, $voice_id);
// Adding conversational style tag
$text_content = $this->add_conversational_tag($common, $text_content, $voice_id);
// Adding speak polly mark.
$text_content = $this->add_speak_tags($common, $text_content);
//Preparing lexicons which will be used create audio.
$lexicons = $common->get_lexicons();
$lexicons_array = explode( ' ', $lexicons );
//Preparing Amazon Polly client object.
$polly_client = $common->get_polly_client();
//Detect Polly Engine (Standard / Neural).
$engine = $common->get_polly_engine($voice_id);
$news_style = $common->should_news_style_be_used($voice_id);
$conversational_style = $common->should_conversational_style_be_used($voice_id);
$logger->log(sprintf('%s Final Polly text:', __METHOD__));
$logger->log($text_content);
$logger->log(sprintf('%s Engine: %s ', __METHOD__, $engine));
$logger->log(sprintf('%s Voice: %s ', __METHOD__, $voice_id));
$logger->log(sprintf('%s SampleRate: %s ', __METHOD__, $sample_rate));
$logger->log(sprintf('%s News Style Enabled: %s ', __METHOD__, $news_style));
$logger->log(sprintf('%s Conversational Style Enabled: %s ', __METHOD__, $conversational_style));
//Call Amazon Polly service.
if ( ! empty( $lexicons ) and ( count( $lexicons_array ) > 0 ) ) {
$result = $polly_client->synthesizeSpeech(
array(
'Engine' => $engine,
'OutputFormat' => 'mp3',
'SampleRate' => $sample_rate,
'Text' => $text_content,
'TextType' => 'ssml',
'VoiceId' => $voice_id,
'LexiconNames' => $lexicons_array,
)
);
} else {
$result = $polly_client->synthesizeSpeech(
array(
'Engine' => $engine,
'OutputFormat' => 'mp3',
'SampleRate' => $sample_rate,
'Text' => $text_content,
'TextType' => 'ssml',
'VoiceId' => $voice_id,
)
);
}
$logger->log(sprintf('%s Audio returned from Polly', __METHOD__));
// Grab the stream and output to a file.
$contents = $result['AudioStream']->getContents();
// Save first part of the audio stream in the parial temporary file.
$wp_filesystem->put_contents( $file_temp_full_name . '_part_' . $key, $contents );
$logger->log(sprintf('%s Part created ( %s )', __METHOD__, $file_temp_full_name . '_part_' . $key));
// Merge new temporary file with previous ones.
if ( $first_part ) {
$wp_filesystem->put_contents( $file_temp_full_name, $contents );
$first_part = false;
} else {
$common->remove_id3( $file_temp_full_name . '_part_' . $key );
$merged_file = $wp_filesystem->get_contents( $file_temp_full_name ) . $wp_filesystem->get_contents( $file_temp_full_name . '_part_' . $key );
$wp_filesystem->put_contents( $file_temp_full_name, $merged_file );
}
// Deleting partial audio file.
$wp_filesystem->delete( $file_temp_full_name . '_part_' . $key );
}
// Saving audio file in final destination.
$fileHandler = $common->get_file_handler();
$audio_location_link = $fileHandler->save($wp_filesystem, $file_temp_full_name, $dir_final_full_name, $file_final_full_name, $post_id, $file_name);
// This will bust the browser cache when a content revision is made.
$audio_location_link = add_query_arg( 'version', time(), $audio_location_link );
// We are using a hash of these values to improve the speed of queries.
$amazon_polly_settings_hash = md5( $voice_id . $sample_rate . "s3" );
if ( $lang == '' ) {
update_post_meta( $post_id, 'amazon_polly_audio_link_location', $audio_location_link );
update_post_meta( $post_id, 'amazon_polly_audio_location', $fileHandler->get_type() );
} else {
update_post_meta( $post_id, 'amazon_polly_translation_' . $lang, '1' );
}
// Update post meta data.
update_post_meta( $post_id, 'amazon_polly_enable', 1 );
update_post_meta( $post_id, 'amazon_polly_voice_id', $voice_id );
update_post_meta( $post_id, 'amazon_polly_sample_rate', $sample_rate );
update_post_meta( $post_id, 'amazon_polly_settings_hash', $amazon_polly_settings_hash );
$logger->log(sprintf('%s Final audio created!', __METHOD__));
}
/**
* Method add SSML breaths tags if functionality is enabled.
*
* @param string $common Plugin common object.
* @param string $text_content Existing text.
* @since 2.5.0
*/
private function add_breaths($common, $text_content) {
// Depending on the plugin configuration SSML tags for automated breaths sound will be added.
$is_breaths_enabled = $common->is_auto_breaths_enabled();
if ( $is_breaths_enabled ) {
$text_content = '<amazon:auto-breaths>' . $text_content . '</amazon:auto-breaths>';
}
return $text_content;
}
/**
* Method decode SSML tags if functionality is enabled.
*
* @param string $common Plugin common object.
* @param string $text_content Existing text.
* @since 2.5.0
*/
private function ssml_support($common, $text_content) {
// If plugin SSML support option is enabled, plugin will try to decode all SSML tags.
$is_ssml_enabled = $common->is_ssml_enabled();
if ( $is_ssml_enabled ) {
$text_content = $common->decode_ssml_tags( $text_content );
}
$text_content = str_replace( '**AMAZONPOLLY*SSML*BREAK*time=***300ms***SSML**', '<break time="300ms"/>', $text_content );
$text_content = str_replace( '**AMAZONPOLLY*SSML*BREAK*time=***500ms***SSML**', '<break time="500ms"/>', $text_content );
$text_content = str_replace( '**AMAZONPOLLY*SSML*BREAK*time=***1s***SSML**', '<break time="500ms"/>', $text_content );
return $text_content;
}
/**
* Method add special mark tag for output text.
*
* @param string $common Plugin common object.
* @param string $text_content Existing text.
* @since 2.5.0
*/
private function add_mark_tag($common, $text_content) {
$amazon_polly_mark_value = 'wp-plugin-awslabs';
$amazon_polly_mark_value = apply_filters( 'amazon_polly_mark_value', $amazon_polly_mark_value );
$text_content = '<mark name="' . esc_attr( $amazon_polly_mark_value ) . '"/>' . $text_content . '';
return $text_content;
}
private function add_newscaster_tag($common, $text_content, $voice) {
if ($common->should_news_style_be_used($voice)) {
$text_content = '<amazon:domain name="news">' . $text_content . '</amazon:domain>';
}
return $text_content;
}
private function add_conversational_tag($common, $text_content, $voice) {
if ($common->should_conversational_style_be_used($voice)) {
$text_content = '<amazon:domain name="conversational">' . $text_content . '</amazon:domain>';
}
return $text_content;
}
/**
* Method add speak tags for output text.
*
* @param string $common Plugin common object.
* @param string $text_content Existing text.
* @since 2.5.0
*/
private function add_speak_tags($common, $text_content) {
$text_content = '<speak>' . $text_content . '</speak>';
return $text_content;
}
/**
* Batch process the post transcriptions.
*
* @since 1.0.0
*/
public function ajax_bulk_synthesize() {
check_ajax_referer( 'pollyajaxnonce', 'nonce' );
$batch_size = 1;
$common = $this->common;
$post_types_supported = $common->get_posttypes_array();
$amazon_polly_voice_id = $common->get_voice_id();
$amazon_polly_sample_rate = $common->get_sample_rate();
$amazon_polly_audio_location = ( 'on' === get_option( 'amazon_polly_s3' ) ) ? 's3' : 'local';
// We are using a hash of these values to improve the speed of queries.
$amazon_polly_settings_hash = md5( $amazon_polly_voice_id . $amazon_polly_sample_rate . $amazon_polly_audio_location );
$args = array(
'posts_per_page' => $batch_size,
'post_type' => $post_types_supported,
'meta_query' => array(
'relation' => 'OR',
array(
'key' => 'amazon_polly_audio_link_location',
'compare' => 'NOT EXISTS',
),
array(
'key' => 'amazon_polly_voice_id',
'value' => $amazon_polly_voice_id,
'compare' => '!=',
),
array(
'key' => 'amazon_polly_sample_rate',
'value' => $amazon_polly_sample_rate,
'compare' => '!=',
),
array(
'key' => 'amazon_polly_audio_location',
'value' => $amazon_polly_audio_location,
'compare' => '!=',
),
),
);
$query = new WP_Query( $args );
$post_ids = wp_list_pluck( $query->posts, 'ID' );
if ( is_array( $post_ids ) && ! empty( $post_ids ) ) {
foreach ( $post_ids as $post_id ) {
$clean_text = $common->clean_text( $post_id, true, false);
$sentences = $common->break_text( $clean_text );
$wp_filesystem = $common->prepare_wp_filesystem();
$this->convert_to_audio( $post_id, $amazon_polly_sample_rate, $amazon_polly_voice_id, $sentences, $wp_filesystem, '' );
}
} else {
$step = 'done';
}
$percentage = $this->get_percentage_complete();
echo wp_json_encode(
array(
'step' => $step,
'percentage' => $percentage,
)
);
wp_die();
}
/**
* Calculate the percentage complete.
*
* @since 1.0.0
*/
private function get_percentage_complete() {
$total_posts = 0;
$common = $this->common;
$post_types_supported = $common->get_posttypes_array();
$posts_needing_translation = $this->get_num_posts_needing_transcription();
foreach ( $post_types_supported as $post_type ) {
$post_type_count = wp_count_posts( $post_type )->publish;
$total_posts += $post_type_count;
}
if ( 0 >= $total_posts || 0 >= $posts_needing_translation ) {
$percentage = 100;
} else {
$percentage = round( $posts_needing_translation / $total_posts * 100, 2 );
}
return $percentage;
}
/**
* Checks how many posts should be converted.
*
* @since 1.0.0
*/
public function get_num_posts_needing_transcription() {
$common = $this->common;
$post_types_supported = $common->get_posttypes_array();
$amazon_polly_voice_id = get_option( 'amazon_polly_voice_id' );
$amazon_polly_sample_rate = get_option( 'amazon_polly_sample_rate' );
$amazon_polly_audio_location = ( 'on' === get_option( 'amazon_polly_s3' ) ) ? 's3' : 'local';
$args = array(
'posts_per_page' => '-1',
'post_type' => $post_types_supported,
'meta_query' => array(
'relation' => 'AND',
array(
'key' => 'amazon_polly_audio_link_location',
'compare' => 'EXISTS',
),
array(
'key' => 'amazon_polly_voice_id',
'value' => $amazon_polly_voice_id,
'compare' => '=',
),
array(
'key' => 'amazon_polly_sample_rate',
'value' => $amazon_polly_sample_rate,
'compare' => '=',
),
array(
'key' => 'amazon_polly_audio_location',
'value' => $amazon_polly_audio_location,
'compare' => '=',
),
),
);
$query = new WP_Query( $args );
return count( $query->posts );
}
}
ob_start();
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