diff options
Diffstat (limited to 'src/output/AoOutputPlugin.cxx')
-rw-r--r-- | src/output/AoOutputPlugin.cxx | 286 |
1 files changed, 0 insertions, 286 deletions
diff --git a/src/output/AoOutputPlugin.cxx b/src/output/AoOutputPlugin.cxx deleted file mode 100644 index e66969e20..000000000 --- a/src/output/AoOutputPlugin.cxx +++ /dev/null @@ -1,286 +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 "AoOutputPlugin.hxx" -#include "OutputAPI.hxx" -#include "util/Error.hxx" -#include "util/Domain.hxx" -#include "Log.hxx" - -#include <ao/ao.h> -#include <glib.h> - -#include <string.h> - -/* An ao_sample_format, with all fields set to zero: */ -static ao_sample_format OUR_AO_FORMAT_INITIALIZER; - -static unsigned ao_output_ref; - -struct AoOutput { - struct audio_output base; - - size_t write_size; - int driver; - ao_option *options; - ao_device *device; - - bool Initialize(const config_param ¶m, Error &error) { - return ao_base_init(&base, &ao_output_plugin, param, - error); - } - - void Deinitialize() { - ao_base_finish(&base); - } - - bool Configure(const config_param ¶m, Error &error); -}; - -static constexpr Domain ao_output_domain("ao_output"); - -static void -ao_output_error(Error &error_r) -{ - const char *error; - - switch (errno) { - case AO_ENODRIVER: - error = "No such libao driver"; - break; - - case AO_ENOTLIVE: - error = "This driver is not a libao live device"; - break; - - case AO_EBADOPTION: - error = "Invalid libao option"; - break; - - case AO_EOPENDEVICE: - error = "Cannot open the libao device"; - break; - - case AO_EFAIL: - error = "Generic libao failure"; - break; - - default: - error_r.SetErrno(); - return; - } - - error_r.Set(ao_output_domain, errno, error); -} - -inline bool -AoOutput::Configure(const config_param ¶m, Error &error) -{ - const char *value; - - options = nullptr; - - write_size = param.GetBlockValue("write_size", 1024u); - - if (ao_output_ref == 0) { - ao_initialize(); - } - ao_output_ref++; - - value = param.GetBlockValue("driver", "default"); - if (0 == strcmp(value, "default")) - driver = ao_default_driver_id(); - else - driver = ao_driver_id(value); - - if (driver < 0) { - error.Format(ao_output_domain, - "\"%s\" is not a valid ao driver", - value); - return false; - } - - ao_info *ai = ao_driver_info(driver); - if (ai == nullptr) { - error.Set(ao_output_domain, "problems getting driver info"); - return false; - } - - FormatDebug(ao_output_domain, "using ao driver \"%s\" for \"%s\"\n", - ai->short_name, param.GetBlockValue("name", nullptr)); - - value = param.GetBlockValue("options", nullptr); - if (value != nullptr) { - gchar **_options = g_strsplit(value, ";", 0); - - for (unsigned i = 0; _options[i] != nullptr; ++i) { - gchar **key_value = g_strsplit(_options[i], "=", 2); - - if (key_value[0] == nullptr || key_value[1] == nullptr) { - error.Format(ao_output_domain, - "problems parsing options \"%s\"", - _options[i]); - return false; - } - - ao_append_option(&options, key_value[0], - key_value[1]); - - g_strfreev(key_value); - } - - g_strfreev(_options); - } - - return true; -} - -static struct audio_output * -ao_output_init(const config_param ¶m, Error &error) -{ - AoOutput *ad = new AoOutput(); - - if (!ad->Initialize(param, error)) { - delete ad; - return nullptr; - } - - if (!ad->Configure(param, error)) { - ad->Deinitialize(); - delete ad; - return nullptr; - } - - return &ad->base; -} - -static void -ao_output_finish(struct audio_output *ao) -{ - AoOutput *ad = (AoOutput *)ao; - - ao_free_options(ad->options); - ad->Deinitialize(); - delete ad; - - ao_output_ref--; - - if (ao_output_ref == 0) - ao_shutdown(); -} - -static void -ao_output_close(struct audio_output *ao) -{ - AoOutput *ad = (AoOutput *)ao; - - ao_close(ad->device); -} - -static bool -ao_output_open(struct audio_output *ao, AudioFormat &audio_format, - Error &error) -{ - ao_sample_format format = OUR_AO_FORMAT_INITIALIZER; - AoOutput *ad = (AoOutput *)ao; - - switch (audio_format.format) { - case SampleFormat::S8: - format.bits = 8; - break; - - case SampleFormat::S16: - format.bits = 16; - break; - - default: - /* support for 24 bit samples in libao is currently - dubious, and until we have sorted that out, - convert everything to 16 bit */ - audio_format.format = SampleFormat::S16; - format.bits = 16; - break; - } - - format.rate = audio_format.sample_rate; - format.byte_format = AO_FMT_NATIVE; - format.channels = audio_format.channels; - - ad->device = ao_open_live(ad->driver, &format, ad->options); - - if (ad->device == nullptr) { - ao_output_error(error); - return false; - } - - return true; -} - -/** - * For whatever reason, libao wants a non-const pointer. Let's hope - * it does not write to the buffer, and use the union deconst hack to - * work around this API misdesign. - */ -static int ao_play_deconst(ao_device *device, const void *output_samples, - uint_32 num_bytes) -{ - union { - const void *in; - char *out; - } u; - - u.in = output_samples; - return ao_play(device, u.out, num_bytes); -} - -static size_t -ao_output_play(struct audio_output *ao, const void *chunk, size_t size, - Error &error) -{ - AoOutput *ad = (AoOutput *)ao; - - if (size > ad->write_size) - size = ad->write_size; - - if (ao_play_deconst(ad->device, chunk, size) == 0) { - ao_output_error(error); - return 0; - } - - return size; -} - -const struct audio_output_plugin ao_output_plugin = { - "ao", - nullptr, - ao_output_init, - ao_output_finish, - nullptr, - nullptr, - ao_output_open, - ao_output_close, - nullptr, - nullptr, - ao_output_play, - nullptr, - nullptr, - nullptr, - nullptr, -}; |