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Diffstat (limited to '')
| -rw-r--r-- | src/decoder/Mpg123DecoderPlugin.cxx | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/src/decoder/Mpg123DecoderPlugin.cxx b/src/decoder/Mpg123DecoderPlugin.cxx deleted file mode 100644 index df23f7847..000000000 --- a/src/decoder/Mpg123DecoderPlugin.cxx +++ /dev/null @@ -1,256 +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" /* must be first for large file support */ -#include "Mpg123DecoderPlugin.hxx" -#include "DecoderAPI.hxx" -#include "CheckAudioFormat.hxx" -#include "tag/TagHandler.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <glib.h> - -#include <mpg123.h> -#include <stdio.h> - -static constexpr Domain mpg123_domain("mpg123"); - -static bool -mpd_mpg123_init(gcc_unused const config_param ¶m) -{ - mpg123_init(); - - return true; -} - -static void -mpd_mpg123_finish(void) -{ - mpg123_exit(); -} - -/** - * Opens a file with an existing #mpg123_handle. - * - * @param handle a handle which was created before; on error, this - * function will not free it - * @param audio_format this parameter is filled after successful - * return - * @return true on success - */ -static bool -mpd_mpg123_open(mpg123_handle *handle, const char *path_fs, - AudioFormat &audio_format) -{ - int error; - int channels, encoding; - long rate; - - /* mpg123_open() wants a writable string :-( */ - char *const path2 = const_cast<char *>(path_fs); - - error = mpg123_open(handle, path2); - if (error != MPG123_OK) { - FormatWarning(mpg123_domain, - "libmpg123 failed to open %s: %s", - path_fs, mpg123_plain_strerror(error)); - return false; - } - - /* obtain the audio format */ - - error = mpg123_getformat(handle, &rate, &channels, &encoding); - if (error != MPG123_OK) { - FormatWarning(mpg123_domain, - "mpg123_getformat() failed: %s", - mpg123_plain_strerror(error)); - return false; - } - - if (encoding != MPG123_ENC_SIGNED_16) { - /* other formats not yet implemented */ - FormatWarning(mpg123_domain, - "expected MPG123_ENC_SIGNED_16, got %d", - encoding); - return false; - } - - Error error2; - if (!audio_format_init_checked(audio_format, rate, SampleFormat::S16, - channels, error2)) { - LogError(error2); - return false; - } - - return true; -} - -static void -mpd_mpg123_file_decode(Decoder &decoder, const char *path_fs) -{ - mpg123_handle *handle; - int error; - off_t num_samples; - struct mpg123_frameinfo info; - - /* open the file */ - - handle = mpg123_new(nullptr, &error); - if (handle == nullptr) { - FormatError(mpg123_domain, - "mpg123_new() failed: %s", - mpg123_plain_strerror(error)); - return; - } - - AudioFormat audio_format; - if (!mpd_mpg123_open(handle, path_fs, audio_format)) { - mpg123_delete(handle); - return; - } - - num_samples = mpg123_length(handle); - - /* tell MPD core we're ready */ - - decoder_initialized(decoder, audio_format, true, - (float)num_samples / - (float)audio_format.sample_rate); - - if (mpg123_info(handle, &info) != MPG123_OK) { - info.vbr = MPG123_CBR; - info.bitrate = 0; - } - - switch (info.vbr) { - case MPG123_ABR: - info.bitrate = info.abr_rate; - break; - case MPG123_CBR: - break; - default: - info.bitrate = 0; - } - - /* the decoder main loop */ - - DecoderCommand cmd; - do { - unsigned char buffer[8192]; - size_t nbytes; - - /* decode */ - - error = mpg123_read(handle, buffer, sizeof(buffer), &nbytes); - if (error != MPG123_OK) { - if (error != MPG123_DONE) - FormatWarning(mpg123_domain, - "mpg123_read() failed: %s", - mpg123_plain_strerror(error)); - break; - } - - /* update bitrate for ABR/VBR */ - if (info.vbr != MPG123_CBR) { - /* FIXME: maybe skip, as too expensive? */ - /* FIXME: maybe, (info.vbr == MPG123_VBR) ? */ - if (mpg123_info (handle, &info) != MPG123_OK) - info.bitrate = 0; - } - - /* send to MPD */ - - cmd = decoder_data(decoder, nullptr, buffer, nbytes, info.bitrate); - - if (cmd == DecoderCommand::SEEK) { - off_t c = decoder_seek_where(decoder)*audio_format.sample_rate; - c = mpg123_seek(handle, c, SEEK_SET); - if (c < 0) - decoder_seek_error(decoder); - else { - decoder_command_finished(decoder); - decoder_timestamp(decoder, c/(double)audio_format.sample_rate); - } - - cmd = DecoderCommand::NONE; - } - } while (cmd == DecoderCommand::NONE); - - /* cleanup */ - - mpg123_delete(handle); -} - -static bool -mpd_mpg123_scan_file(const char *path_fs, - const struct tag_handler *handler, void *handler_ctx) -{ - mpg123_handle *handle; - int error; - off_t num_samples; - - handle = mpg123_new(nullptr, &error); - if (handle == nullptr) { - FormatError(mpg123_domain, - "mpg123_new() failed: %s", - mpg123_plain_strerror(error)); - return false; - } - - AudioFormat audio_format; - if (!mpd_mpg123_open(handle, path_fs, audio_format)) { - mpg123_delete(handle); - return false; - } - - num_samples = mpg123_length(handle); - if (num_samples <= 0) { - mpg123_delete(handle); - return false; - } - - /* ID3 tag support not yet implemented */ - - mpg123_delete(handle); - - tag_handler_invoke_duration(handler, handler_ctx, - num_samples / audio_format.sample_rate); - return true; -} - -static const char *const mpg123_suffixes[] = { - "mp3", - nullptr -}; - -const struct DecoderPlugin mpg123_decoder_plugin = { - "mpg123", - mpd_mpg123_init, - mpd_mpg123_finish, - /* streaming not yet implemented */ - nullptr, - mpd_mpg123_file_decode, - mpd_mpg123_scan_file, - nullptr, - nullptr, - mpg123_suffixes, - nullptr, -}; |