diff options
Diffstat (limited to 'src/encoder/WaveEncoderPlugin.cxx')
| -rw-r--r-- | src/encoder/WaveEncoderPlugin.cxx | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/src/encoder/WaveEncoderPlugin.cxx b/src/encoder/WaveEncoderPlugin.cxx deleted file mode 100644 index 732226128..000000000 --- a/src/encoder/WaveEncoderPlugin.cxx +++ /dev/null @@ -1,265 +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 "WaveEncoderPlugin.hxx" -#include "EncoderAPI.hxx" -#include "system/ByteOrder.hxx" -#include "util/Manual.hxx" -#include "util/DynamicFifoBuffer.hxx" - -#include <assert.h> -#include <string.h> - -struct WaveEncoder { - Encoder encoder; - unsigned bits; - - Manual<DynamicFifoBuffer<uint8_t>> buffer; - - WaveEncoder():encoder(wave_encoder_plugin) {} -}; - -struct wave_header { - uint32_t id_riff; - uint32_t riff_size; - uint32_t id_wave; - uint32_t id_fmt; - uint32_t fmt_size; - uint16_t format; - uint16_t channels; - uint32_t freq; - uint32_t byterate; - uint16_t blocksize; - uint16_t bits; - uint32_t id_data; - uint32_t data_size; -}; - -static void -fill_wave_header(struct wave_header *header, int channels, int bits, - int freq, int block_size) -{ - int data_size = 0x0FFFFFFF; - - /* constants */ - header->id_riff = ToLE32(0x46464952); - header->id_wave = ToLE32(0x45564157); - header->id_fmt = ToLE32(0x20746d66); - header->id_data = ToLE32(0x61746164); - - /* wave format */ - header->format = ToLE16(1); // PCM_FORMAT - header->channels = ToLE16(channels); - header->bits = ToLE16(bits); - header->freq = ToLE32(freq); - header->blocksize = ToLE16(block_size); - header->byterate = ToLE32(freq * block_size); - - /* chunk sizes (fake data length) */ - header->fmt_size = ToLE32(16); - header->data_size = ToLE32(data_size); - header->riff_size = ToLE32(4 + (8 + 16) + (8 + data_size)); -} - -static Encoder * -wave_encoder_init(gcc_unused const config_param ¶m, - gcc_unused Error &error) -{ - WaveEncoder *encoder = new WaveEncoder(); - return &encoder->encoder; -} - -static void -wave_encoder_finish(Encoder *_encoder) -{ - WaveEncoder *encoder = (WaveEncoder *)_encoder; - - delete encoder; -} - -static bool -wave_encoder_open(Encoder *_encoder, - AudioFormat &audio_format, - gcc_unused Error &error) -{ - WaveEncoder *encoder = (WaveEncoder *)_encoder; - - assert(audio_format.IsValid()); - - switch (audio_format.format) { - case SampleFormat::S8: - encoder->bits = 8; - break; - - case SampleFormat::S16: - encoder->bits = 16; - break; - - case SampleFormat::S24_P32: - encoder->bits = 24; - break; - - case SampleFormat::S32: - encoder->bits = 32; - break; - - default: - audio_format.format = SampleFormat::S16; - encoder->bits = 16; - break; - } - - encoder->buffer.Construct(8192); - - auto range = encoder->buffer->Write(); - assert(range.size >= sizeof(wave_header)); - wave_header *header = (wave_header *)range.data; - - /* create PCM wave header in initial buffer */ - fill_wave_header(header, - audio_format.channels, - encoder->bits, - audio_format.sample_rate, - (encoder->bits / 8) * audio_format.channels); - - encoder->buffer->Append(sizeof(*header)); - - return true; -} - -static void -wave_encoder_close(Encoder *_encoder) -{ - WaveEncoder *encoder = (WaveEncoder *)_encoder; - - encoder->buffer.Destruct(); -} - -static size_t -pcm16_to_wave(uint16_t *dst16, const uint16_t *src16, size_t length) -{ - size_t cnt = length >> 1; - while (cnt > 0) { - *dst16++ = ToLE16(*src16++); - cnt--; - } - return length; -} - -static size_t -pcm32_to_wave(uint32_t *dst32, const uint32_t *src32, size_t length) -{ - size_t cnt = length >> 2; - while (cnt > 0){ - *dst32++ = ToLE32(*src32++); - cnt--; - } - return length; -} - -static size_t -pcm24_to_wave(uint8_t *dst8, const uint32_t *src32, size_t length) -{ - uint32_t value; - uint8_t *dst_old = dst8; - - length = length >> 2; - while (length > 0){ - value = *src32++; - *dst8++ = (value) & 0xFF; - *dst8++ = (value >> 8) & 0xFF; - *dst8++ = (value >> 16) & 0xFF; - length--; - } - //correct buffer length - return (dst8 - dst_old); -} - -static bool -wave_encoder_write(Encoder *_encoder, - const void *src, size_t length, - gcc_unused Error &error) -{ - WaveEncoder *encoder = (WaveEncoder *)_encoder; - - uint8_t *dst = encoder->buffer->Write(length); - - if (IsLittleEndian()) { - switch (encoder->bits) { - case 8: - case 16: - case 32:// optimized cases - memcpy(dst, src, length); - break; - case 24: - length = pcm24_to_wave(dst, (const uint32_t *)src, length); - break; - } - } else { - switch (encoder->bits) { - case 8: - memcpy(dst, src, length); - break; - case 16: - length = pcm16_to_wave((uint16_t *)dst, - (const uint16_t *)src, length); - break; - case 24: - length = pcm24_to_wave(dst, (const uint32_t *)src, length); - break; - case 32: - length = pcm32_to_wave((uint32_t *)dst, - (const uint32_t *)src, length); - break; - } - } - - encoder->buffer->Append(length); - return true; -} - -static size_t -wave_encoder_read(Encoder *_encoder, void *dest, size_t length) -{ - WaveEncoder *encoder = (WaveEncoder *)_encoder; - - return encoder->buffer->Read((uint8_t *)dest, length); -} - -static const char * -wave_encoder_get_mime_type(gcc_unused Encoder *_encoder) -{ - return "audio/wav"; -} - -const EncoderPlugin wave_encoder_plugin = { - "wave", - wave_encoder_init, - wave_encoder_finish, - wave_encoder_open, - wave_encoder_close, - nullptr, - nullptr, - nullptr, - nullptr, - wave_encoder_write, - wave_encoder_read, - wave_encoder_get_mime_type, -}; 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