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Diffstat (limited to '')
| -rw-r--r-- | src/encoder/TwolameEncoderPlugin.cxx | 314 |
1 files changed, 0 insertions, 314 deletions
diff --git a/src/encoder/TwolameEncoderPlugin.cxx b/src/encoder/TwolameEncoderPlugin.cxx deleted file mode 100644 index 543e71d64..000000000 --- a/src/encoder/TwolameEncoderPlugin.cxx +++ /dev/null @@ -1,314 +0,0 @@ -/* - * Copyright (C) 2003-2013 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 "TwolameEncoderPlugin.hxx" -#include "EncoderAPI.hxx" -#include "AudioFormat.hxx" -#include "ConfigError.hxx" -#include "util/NumberParser.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <twolame.h> - -#include <assert.h> -#include <string.h> - -struct TwolameEncoder final { - Encoder encoder; - - AudioFormat audio_format; - float quality; - int bitrate; - - twolame_options *options; - - unsigned char output_buffer[32768]; - size_t output_buffer_length; - size_t output_buffer_position; - - /** - * Call libtwolame's flush function when the output_buffer is - * empty? - */ - bool flush; - - TwolameEncoder():encoder(twolame_encoder_plugin) {} - - bool Configure(const config_param ¶m, Error &error); -}; - -static constexpr Domain twolame_encoder_domain("twolame_encoder"); - -bool -TwolameEncoder::Configure(const config_param ¶m, Error &error) -{ - const char *value; - char *endptr; - - value = param.GetBlockValue("quality"); - if (value != nullptr) { - /* a quality was configured (VBR) */ - - quality = ParseDouble(value, &endptr); - - if (*endptr != '\0' || quality < -1.0 || quality > 10.0) { - error.Format(config_domain, - "quality \"%s\" is not a number in the " - "range -1 to 10", - value); - return false; - } - - if (param.GetBlockValue("bitrate") != nullptr) { - error.Set(config_domain, - "quality and bitrate are both defined"); - return false; - } - } else { - /* a bit rate was configured */ - - value = param.GetBlockValue("bitrate"); - if (value == nullptr) { - error.Set(config_domain, - "neither bitrate nor quality defined"); - return false; - } - - quality = -2.0; - bitrate = ParseInt(value, &endptr); - - if (*endptr != '\0' || bitrate <= 0) { - error.Set(config_domain, - "bitrate should be a positive integer"); - return false; - } - } - - return true; -} - -static Encoder * -twolame_encoder_init(const config_param ¶m, Error &error_r) -{ - FormatDebug(twolame_encoder_domain, - "libtwolame version %s", get_twolame_version()); - - TwolameEncoder *encoder = new TwolameEncoder(); - - /* load configuration from "param" */ - if (!encoder->Configure(param, error_r)) { - /* configuration has failed, roll back and return error */ - delete encoder; - return nullptr; - } - - return &encoder->encoder; -} - -static void -twolame_encoder_finish(Encoder *_encoder) -{ - TwolameEncoder *encoder = (TwolameEncoder *)_encoder; - - /* the real libtwolame cleanup was already performed by - twolame_encoder_close(), so no real work here */ - delete encoder; -} - -static bool -twolame_encoder_setup(TwolameEncoder *encoder, Error &error) -{ - if (encoder->quality >= -1.0) { - /* a quality was configured (VBR) */ - - if (0 != twolame_set_VBR(encoder->options, true)) { - error.Set(twolame_encoder_domain, - "error setting twolame VBR mode"); - return false; - } - if (0 != twolame_set_VBR_q(encoder->options, encoder->quality)) { - error.Set(twolame_encoder_domain, - "error setting twolame VBR quality"); - return false; - } - } else { - /* a bit rate was configured */ - - if (0 != twolame_set_brate(encoder->options, encoder->bitrate)) { - error.Set(twolame_encoder_domain, - "error setting twolame bitrate"); - return false; - } - } - - if (0 != twolame_set_num_channels(encoder->options, - encoder->audio_format.channels)) { - error.Set(twolame_encoder_domain, - "error setting twolame num channels"); - return false; - } - - if (0 != twolame_set_in_samplerate(encoder->options, - encoder->audio_format.sample_rate)) { - error.Set(twolame_encoder_domain, - "error setting twolame sample rate"); - return false; - } - - if (0 > twolame_init_params(encoder->options)) { - error.Set(twolame_encoder_domain, - "error initializing twolame params"); - return false; - } - - return true; -} - -static bool -twolame_encoder_open(Encoder *_encoder, AudioFormat &audio_format, - Error &error) -{ - TwolameEncoder *encoder = (TwolameEncoder *)_encoder; - - audio_format.format = SampleFormat::S16; - audio_format.channels = 2; - - encoder->audio_format = audio_format; - - encoder->options = twolame_init(); - if (encoder->options == nullptr) { - error.Set(twolame_encoder_domain, "twolame_init() failed"); - return false; - } - - if (!twolame_encoder_setup(encoder, error)) { - twolame_close(&encoder->options); - return false; - } - - encoder->output_buffer_length = 0; - encoder->output_buffer_position = 0; - encoder->flush = false; - - return true; -} - -static void -twolame_encoder_close(Encoder *_encoder) -{ - TwolameEncoder *encoder = (TwolameEncoder *)_encoder; - - twolame_close(&encoder->options); -} - -static bool -twolame_encoder_flush(Encoder *_encoder, gcc_unused Error &error) -{ - TwolameEncoder *encoder = (TwolameEncoder *)_encoder; - - encoder->flush = true; - return true; -} - -static bool -twolame_encoder_write(Encoder *_encoder, - const void *data, size_t length, - gcc_unused Error &error) -{ - TwolameEncoder *encoder = (TwolameEncoder *)_encoder; - const int16_t *src = (const int16_t*)data; - - assert(encoder->output_buffer_position == - encoder->output_buffer_length); - - const unsigned num_frames = - length / encoder->audio_format.GetFrameSize(); - - int bytes_out = twolame_encode_buffer_interleaved(encoder->options, - src, num_frames, - encoder->output_buffer, - sizeof(encoder->output_buffer)); - if (bytes_out < 0) { - error.Set(twolame_encoder_domain, "twolame encoder failed"); - return false; - } - - encoder->output_buffer_length = (size_t)bytes_out; - encoder->output_buffer_position = 0; - return true; -} - -static size_t -twolame_encoder_read(Encoder *_encoder, void *dest, size_t length) -{ - TwolameEncoder *encoder = (TwolameEncoder *)_encoder; - - assert(encoder->output_buffer_position <= - encoder->output_buffer_length); - - if (encoder->output_buffer_position == encoder->output_buffer_length && - encoder->flush) { - int ret = twolame_encode_flush(encoder->options, - encoder->output_buffer, - sizeof(encoder->output_buffer)); - if (ret > 0) { - encoder->output_buffer_length = (size_t)ret; - encoder->output_buffer_position = 0; - } - - encoder->flush = false; - } - - - const size_t remainning = encoder->output_buffer_length - - encoder->output_buffer_position; - if (length > remainning) - length = remainning; - - memcpy(dest, encoder->output_buffer + encoder->output_buffer_position, - length); - - encoder->output_buffer_position += length; - - return length; -} - -static const char * -twolame_encoder_get_mime_type(gcc_unused Encoder *_encoder) -{ - return "audio/mpeg"; -} - -const EncoderPlugin twolame_encoder_plugin = { - "twolame", - twolame_encoder_init, - twolame_encoder_finish, - twolame_encoder_open, - twolame_encoder_close, - twolame_encoder_flush, - twolame_encoder_flush, - nullptr, - nullptr, - twolame_encoder_write, - twolame_encoder_read, - twolame_encoder_get_mime_type, -}; |