From 655ad344140ee250f8becf67544dbe035a3460b1 Mon Sep 17 00:00:00 2001 From: Max Kellermann Date: Thu, 23 Jan 2014 23:09:14 +0100 Subject: Encoder*: move to src/encoder .. and move the plugins to src/encoder/plugins/. --- src/encoder/FlacEncoderPlugin.cxx | 325 -------------------------------------- 1 file changed, 325 deletions(-) delete mode 100644 src/encoder/FlacEncoderPlugin.cxx (limited to 'src/encoder/FlacEncoderPlugin.cxx') diff --git a/src/encoder/FlacEncoderPlugin.cxx b/src/encoder/FlacEncoderPlugin.cxx deleted file mode 100644 index 83ceea699..000000000 --- a/src/encoder/FlacEncoderPlugin.cxx +++ /dev/null @@ -1,325 +0,0 @@ -/* - * Copyright (C) 2003-2014 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "FlacEncoderPlugin.hxx" -#include "EncoderAPI.hxx" -#include "AudioFormat.hxx" -#include "pcm/PcmBuffer.hxx" -#include "ConfigError.hxx" -#include "util/Manual.hxx" -#include "util/DynamicFifoBuffer.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" - -#include - -#if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7 -#error libFLAC is too old -#endif - -struct flac_encoder { - Encoder encoder; - - AudioFormat audio_format; - unsigned compression; - - FLAC__StreamEncoder *fse; - - PcmBuffer expand_buffer; - - /** - * This buffer will hold encoded data from libFLAC until it is - * picked up with flac_encoder_read(). - */ - Manual> output_buffer; - - flac_encoder():encoder(flac_encoder_plugin) {} -}; - -static constexpr Domain flac_encoder_domain("vorbis_encoder"); - -static bool -flac_encoder_configure(struct flac_encoder *encoder, const config_param ¶m, - gcc_unused Error &error) -{ - encoder->compression = param.GetBlockValue("compression", 5u); - - return true; -} - -static Encoder * -flac_encoder_init(const config_param ¶m, Error &error) -{ - flac_encoder *encoder = new flac_encoder(); - - /* load configuration from "param" */ - if (!flac_encoder_configure(encoder, param, error)) { - /* configuration has failed, roll back and return error */ - delete encoder; - return nullptr; - } - - return &encoder->encoder; -} - -static void -flac_encoder_finish(Encoder *_encoder) -{ - struct flac_encoder *encoder = (struct flac_encoder *)_encoder; - - /* the real libFLAC cleanup was already performed by - flac_encoder_close(), so no real work here */ - delete encoder; -} - -static bool -flac_encoder_setup(struct flac_encoder *encoder, unsigned bits_per_sample, - Error &error) -{ - if ( !FLAC__stream_encoder_set_compression_level(encoder->fse, - encoder->compression)) { - error.Format(config_domain, - "error setting flac compression to %d", - encoder->compression); - return false; - } - - if ( !FLAC__stream_encoder_set_channels(encoder->fse, - encoder->audio_format.channels)) { - error.Format(config_domain, - "error setting flac channels num to %d", - encoder->audio_format.channels); - return false; - } - if ( !FLAC__stream_encoder_set_bits_per_sample(encoder->fse, - bits_per_sample)) { - error.Format(config_domain, - "error setting flac bit format to %d", - bits_per_sample); - return false; - } - if ( !FLAC__stream_encoder_set_sample_rate(encoder->fse, - encoder->audio_format.sample_rate)) { - error.Format(config_domain, - "error setting flac sample rate to %d", - encoder->audio_format.sample_rate); - return false; - } - return true; -} - -static FLAC__StreamEncoderWriteStatus -flac_write_callback(gcc_unused const FLAC__StreamEncoder *fse, - const FLAC__byte data[], - size_t bytes, - gcc_unused unsigned samples, - gcc_unused unsigned current_frame, void *client_data) -{ - struct flac_encoder *encoder = (struct flac_encoder *) client_data; - - //transfer data to buffer - encoder->output_buffer->Append((const uint8_t *)data, bytes); - - return FLAC__STREAM_ENCODER_WRITE_STATUS_OK; -} - -static void -flac_encoder_close(Encoder *_encoder) -{ - struct flac_encoder *encoder = (struct flac_encoder *)_encoder; - - FLAC__stream_encoder_delete(encoder->fse); - - encoder->expand_buffer.Clear(); - encoder->output_buffer.Destruct(); -} - -static bool -flac_encoder_open(Encoder *_encoder, AudioFormat &audio_format, Error &error) -{ - struct flac_encoder *encoder = (struct flac_encoder *)_encoder; - unsigned bits_per_sample; - - encoder->audio_format = audio_format; - - /* FIXME: flac should support 32bit as well */ - switch (audio_format.format) { - case SampleFormat::S8: - bits_per_sample = 8; - break; - - case SampleFormat::S16: - bits_per_sample = 16; - break; - - case SampleFormat::S24_P32: - bits_per_sample = 24; - break; - - default: - bits_per_sample = 24; - audio_format.format = SampleFormat::S24_P32; - } - - /* allocate the encoder */ - encoder->fse = FLAC__stream_encoder_new(); - if (encoder->fse == nullptr) { - error.Set(flac_encoder_domain, "flac_new() failed"); - return false; - } - - if (!flac_encoder_setup(encoder, bits_per_sample, error)) { - FLAC__stream_encoder_delete(encoder->fse); - return false; - } - - encoder->output_buffer.Construct(8192); - - /* this immediately outputs data through callback */ - - { - FLAC__StreamEncoderInitStatus init_status; - - init_status = FLAC__stream_encoder_init_stream(encoder->fse, - flac_write_callback, - nullptr, nullptr, nullptr, encoder); - - if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) { - error.Format(flac_encoder_domain, - "failed to initialize encoder: %s\n", - FLAC__StreamEncoderInitStatusString[init_status]); - flac_encoder_close(_encoder); - return false; - } - } - - return true; -} - - -static bool -flac_encoder_flush(Encoder *_encoder, gcc_unused Error &error) -{ - struct flac_encoder *encoder = (struct flac_encoder *)_encoder; - - (void) FLAC__stream_encoder_finish(encoder->fse); - return true; -} - -static inline void -pcm8_to_flac(int32_t *out, const int8_t *in, unsigned num_samples) -{ - while (num_samples > 0) { - *out++ = *in++; - --num_samples; - } -} - -static inline void -pcm16_to_flac(int32_t *out, const int16_t *in, unsigned num_samples) -{ - while (num_samples > 0) { - *out++ = *in++; - --num_samples; - } -} - -static bool -flac_encoder_write(Encoder *_encoder, - const void *data, size_t length, - gcc_unused Error &error) -{ - struct flac_encoder *encoder = (struct flac_encoder *)_encoder; - unsigned num_frames, num_samples; - void *exbuffer; - const void *buffer = nullptr; - - /* format conversion */ - - num_frames = length / encoder->audio_format.GetFrameSize(); - num_samples = num_frames * encoder->audio_format.channels; - - switch (encoder->audio_format.format) { - case SampleFormat::S8: - exbuffer = encoder->expand_buffer.Get(length * 4); - pcm8_to_flac((int32_t *)exbuffer, (const int8_t *)data, - num_samples); - buffer = exbuffer; - break; - - case SampleFormat::S16: - exbuffer = encoder->expand_buffer.Get(length * 2); - pcm16_to_flac((int32_t *)exbuffer, (const int16_t *)data, - num_samples); - buffer = exbuffer; - break; - - case SampleFormat::S24_P32: - case SampleFormat::S32: - /* nothing need to be done; format is the same for - both mpd and libFLAC */ - buffer = data; - break; - - default: - gcc_unreachable(); - } - - /* feed samples to encoder */ - - if (!FLAC__stream_encoder_process_interleaved(encoder->fse, - (const FLAC__int32 *)buffer, - num_frames)) { - error.Set(flac_encoder_domain, "flac encoder process failed"); - return false; - } - - return true; -} - -static size_t -flac_encoder_read(Encoder *_encoder, void *dest, size_t length) -{ - struct flac_encoder *encoder = (struct flac_encoder *)_encoder; - - return encoder->output_buffer->Read((uint8_t *)dest, length); -} - -static const char * -flac_encoder_get_mime_type(gcc_unused Encoder *_encoder) -{ - return "audio/flac"; -} - -const EncoderPlugin flac_encoder_plugin = { - "flac", - flac_encoder_init, - flac_encoder_finish, - flac_encoder_open, - flac_encoder_close, - flac_encoder_flush, - flac_encoder_flush, - nullptr, - nullptr, - flac_encoder_write, - flac_encoder_read, - flac_encoder_get_mime_type, -}; 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