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/LameEncoderPlugin.cxx | 293 -------------------------------------- 1 file changed, 293 deletions(-) delete mode 100644 src/encoder/LameEncoderPlugin.cxx (limited to 'src/encoder/LameEncoderPlugin.cxx') diff --git a/src/encoder/LameEncoderPlugin.cxx b/src/encoder/LameEncoderPlugin.cxx deleted file mode 100644 index 1f4ab2088..000000000 --- a/src/encoder/LameEncoderPlugin.cxx +++ /dev/null @@ -1,293 +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 "LameEncoderPlugin.hxx" -#include "EncoderAPI.hxx" -#include "AudioFormat.hxx" -#include "ConfigError.hxx" -#include "util/NumberParser.hxx" -#include "util/ReusableArray.hxx" -#include "util/Manual.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" - -#include - -#include -#include - -struct LameEncoder final { - Encoder encoder; - - AudioFormat audio_format; - float quality; - int bitrate; - - lame_global_flags *gfp; - - Manual> output_buffer; - unsigned char *output_begin, *output_end; - - LameEncoder():encoder(lame_encoder_plugin) {} - - bool Configure(const config_param ¶m, Error &error); -}; - -static constexpr Domain lame_encoder_domain("lame_encoder"); - -bool -LameEncoder::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 * -lame_encoder_init(const config_param ¶m, Error &error) -{ - LameEncoder *encoder = new LameEncoder(); - - /* load configuration from "param" */ - if (!encoder->Configure(param, error)) { - /* configuration has failed, roll back and return error */ - delete encoder; - return nullptr; - } - - return &encoder->encoder; -} - -static void -lame_encoder_finish(Encoder *_encoder) -{ - LameEncoder *encoder = (LameEncoder *)_encoder; - - /* the real liblame cleanup was already performed by - lame_encoder_close(), so no real work here */ - delete encoder; -} - -static bool -lame_encoder_setup(LameEncoder *encoder, Error &error) -{ - if (encoder->quality >= -1.0) { - /* a quality was configured (VBR) */ - - if (0 != lame_set_VBR(encoder->gfp, vbr_rh)) { - error.Set(lame_encoder_domain, - "error setting lame VBR mode"); - return false; - } - if (0 != lame_set_VBR_q(encoder->gfp, encoder->quality)) { - error.Set(lame_encoder_domain, - "error setting lame VBR quality"); - return false; - } - } else { - /* a bit rate was configured */ - - if (0 != lame_set_brate(encoder->gfp, encoder->bitrate)) { - error.Set(lame_encoder_domain, - "error setting lame bitrate"); - return false; - } - } - - if (0 != lame_set_num_channels(encoder->gfp, - encoder->audio_format.channels)) { - error.Set(lame_encoder_domain, - "error setting lame num channels"); - return false; - } - - if (0 != lame_set_in_samplerate(encoder->gfp, - encoder->audio_format.sample_rate)) { - error.Set(lame_encoder_domain, - "error setting lame sample rate"); - return false; - } - - if (0 != lame_set_out_samplerate(encoder->gfp, - encoder->audio_format.sample_rate)) { - error.Set(lame_encoder_domain, - "error setting lame out sample rate"); - return false; - } - - if (0 > lame_init_params(encoder->gfp)) { - error.Set(lame_encoder_domain, - "error initializing lame params"); - return false; - } - - return true; -} - -static bool -lame_encoder_open(Encoder *_encoder, AudioFormat &audio_format, Error &error) -{ - LameEncoder *encoder = (LameEncoder *)_encoder; - - audio_format.format = SampleFormat::S16; - audio_format.channels = 2; - - encoder->audio_format = audio_format; - - encoder->gfp = lame_init(); - if (encoder->gfp == nullptr) { - error.Set(lame_encoder_domain, "lame_init() failed"); - return false; - } - - if (!lame_encoder_setup(encoder, error)) { - lame_close(encoder->gfp); - return false; - } - - encoder->output_buffer.Construct(); - encoder->output_begin = encoder->output_end = nullptr; - - return true; -} - -static void -lame_encoder_close(Encoder *_encoder) -{ - LameEncoder *encoder = (LameEncoder *)_encoder; - - lame_close(encoder->gfp); - encoder->output_buffer.Destruct(); -} - -static bool -lame_encoder_write(Encoder *_encoder, - const void *data, size_t length, - gcc_unused Error &error) -{ - LameEncoder *encoder = (LameEncoder *)_encoder; - const int16_t *src = (const int16_t*)data; - - assert(encoder->output_begin == encoder->output_end); - - const unsigned num_frames = - length / encoder->audio_format.GetFrameSize(); - const unsigned num_samples = - length / encoder->audio_format.GetSampleSize(); - - /* worst-case formula according to LAME documentation */ - const size_t output_buffer_size = 5 * num_samples / 4 + 7200; - const auto output_buffer = encoder->output_buffer->Get(output_buffer_size); - - /* this is for only 16-bit audio */ - - int bytes_out = lame_encode_buffer_interleaved(encoder->gfp, - const_cast(src), - num_frames, - output_buffer, - output_buffer_size); - - if (bytes_out < 0) { - error.Set(lame_encoder_domain, "lame encoder failed"); - return false; - } - - encoder->output_begin = output_buffer; - encoder->output_end = output_buffer + bytes_out; - return true; -} - -static size_t -lame_encoder_read(Encoder *_encoder, void *dest, size_t length) -{ - LameEncoder *encoder = (LameEncoder *)_encoder; - - const auto begin = encoder->output_begin; - assert(begin <= encoder->output_end); - const size_t remainning = encoder->output_end - begin; - if (length > remainning) - length = remainning; - - memcpy(dest, begin, length); - - encoder->output_begin = begin + length; - return length; -} - -static const char * -lame_encoder_get_mime_type(gcc_unused Encoder *_encoder) -{ - return "audio/mpeg"; -} - -const EncoderPlugin lame_encoder_plugin = { - "lame", - lame_encoder_init, - lame_encoder_finish, - lame_encoder_open, - lame_encoder_close, - nullptr, - nullptr, - nullptr, - nullptr, - lame_encoder_write, - lame_encoder_read, - lame_encoder_get_mime_type, -}; -- cgit v1.2.3