diff options
Diffstat (limited to 'src/output/plugins/OssOutputPlugin.cxx')
| -rw-r--r-- | src/output/plugins/OssOutputPlugin.cxx | 251 |
1 files changed, 123 insertions, 128 deletions
diff --git a/src/output/plugins/OssOutputPlugin.cxx b/src/output/plugins/OssOutputPlugin.cxx index 39d87fc35..7f75f4e31 100644 --- a/src/output/plugins/OssOutputPlugin.cxx +++ b/src/output/plugins/OssOutputPlugin.cxx @@ -1,5 +1,5 @@ /* - * Copyright (C) 2003-2014 The Music Player Daemon Project + * Copyright (C) 2003-2015 The Music Player Daemon Project * http://www.musicpd.org * * This program is free software; you can redistribute it and/or modify @@ -20,6 +20,7 @@ #include "config.h" #include "OssOutputPlugin.hxx" #include "../OutputAPI.hxx" +#include "../Wrapper.hxx" #include "mixer/MixerList.hxx" #include "system/fd_util.h" #include "util/ConstBuffer.hxx" @@ -57,7 +58,9 @@ #include "util/Manual.hxx" #endif -struct OssOutput { +class OssOutput { + friend struct AudioOutputWrapper<OssOutput>; + AudioOutput base; #ifdef AFMT_S24_PACKED @@ -79,13 +82,49 @@ struct OssOutput { */ int oss_format; - OssOutput() +public: + OssOutput(const char *_device=nullptr) :base(oss_output_plugin), - fd(-1), device(nullptr) {} + fd(-1), device(_device) {} - bool Initialize(const config_param ¶m, Error &error_r) { - return base.Configure(param, error_r); + bool Initialize(const ConfigBlock &block, Error &error_r) { + return base.Configure(block, error_r); } + + static OssOutput *Create(const ConfigBlock &block, Error &error); + +#ifdef AFMT_S24_PACKED + bool Enable(gcc_unused Error &error) { + pcm_export.Construct(); + return true; + } + + void Disable() { + pcm_export.Destruct(); + } +#endif + + bool Open(AudioFormat &audio_format, Error &error); + + void Close() { + DoClose(); + } + + size_t Play(const void *chunk, size_t size, Error &error); + void Cancel(); + +private: + /** + * Sets up the OSS device which was opened before. + */ + bool Setup(AudioFormat &audio_format, Error &error); + + /** + * Reopen the device with the saved audio_format, without any probing. + */ + bool Reopen(Error &error); + + void DoClose(); }; static constexpr Domain oss_output_domain("oss_output"); @@ -124,7 +163,7 @@ oss_stat_device(const char *device, int *errno_r) return OSS_STAT_NO_ERROR; } -static const char *default_devices[] = { "/dev/sound/dsp", "/dev/dsp" }; +static const char *const default_devices[] = { "/dev/sound/dsp", "/dev/dsp" }; static bool oss_output_test_default_device(void) @@ -147,24 +186,23 @@ oss_output_test_default_device(void) return false; } -static AudioOutput * +static OssOutput * oss_open_default(Error &error) { int err[ARRAY_SIZE(default_devices)]; enum oss_stat ret[ARRAY_SIZE(default_devices)]; - const config_param empty; + const ConfigBlock empty; for (int i = ARRAY_SIZE(default_devices); --i >= 0; ) { ret[i] = oss_stat_device(default_devices[i], &err[i]); if (ret[i] == OSS_STAT_NO_ERROR) { - OssOutput *od = new OssOutput(); + OssOutput *od = new OssOutput(default_devices[i]); if (!od->Initialize(empty, error)) { delete od; - return NULL; + return nullptr; } - od->device = default_devices[i]; - return &od->base; + return od; } } @@ -194,62 +232,33 @@ oss_open_default(Error &error) error.Set(oss_output_domain, "error trying to open default OSS device"); - return NULL; + return nullptr; } -static AudioOutput * -oss_output_init(const config_param ¶m, Error &error) +inline OssOutput * +OssOutput::Create(const ConfigBlock &block, Error &error) { - const char *device = param.GetBlockValue("device"); - if (device != NULL) { + const char *device = block.GetBlockValue("device"); + if (device != nullptr) { OssOutput *od = new OssOutput(); - if (!od->Initialize(param, error)) { + if (!od->Initialize(block, error)) { delete od; - return NULL; + return nullptr; } od->device = device; - return &od->base; + return od; } return oss_open_default(error); } -static void -oss_output_finish(AudioOutput *ao) +void +OssOutput::DoClose() { - OssOutput *od = (OssOutput *)ao; - - delete od; -} - -#ifdef AFMT_S24_PACKED - -static bool -oss_output_enable(AudioOutput *ao, gcc_unused Error &error) -{ - OssOutput *od = (OssOutput *)ao; - - od->pcm_export.Construct(); - return true; -} - -static void -oss_output_disable(AudioOutput *ao) -{ - OssOutput *od = (OssOutput *)ao; - - od->pcm_export.Destruct(); -} - -#endif - -static void -oss_close(OssOutput *od) -{ - if (od->fd >= 0) - close(od->fd); - od->fd = -1; + if (fd >= 0) + close(fd); + fd = -1; } /** @@ -271,8 +280,8 @@ oss_try_ioctl_r(int fd, unsigned long request, int *value_r, const char *msg, Error &error) { assert(fd >= 0); - assert(value_r != NULL); - assert(msg != NULL); + assert(value_r != nullptr); + assert(msg != nullptr); assert(!error.IsDefined()); int ret = ioctl(fd, request, value_r); @@ -380,7 +389,7 @@ oss_setup_sample_rate(int fd, AudioFormat &audio_format, break; } - static const int sample_rates[] = { 48000, 44100, 0 }; + static constexpr int sample_rates[] = { 48000, 44100, 0 }; for (unsigned i = 0; sample_rates[i] != 0; ++i) { sample_rate = sample_rates[i]; if (sample_rate == (int)audio_format.sample_rate) @@ -412,6 +421,7 @@ oss_setup_sample_rate(int fd, AudioFormat &audio_format, * Convert a MPD sample format to its OSS counterpart. Returns * AFMT_QUERY if there is no direct counterpart. */ +gcc_const static int sample_format_to_oss(SampleFormat format) { @@ -442,13 +452,15 @@ sample_format_to_oss(SampleFormat format) #endif } - return AFMT_QUERY; + assert(false); + gcc_unreachable(); } /** * Convert an OSS sample format to its MPD counterpart. Returns * SampleFormat::UNDEFINED if there is no direct counterpart. */ +gcc_const static SampleFormat sample_format_from_oss(int format) { @@ -572,7 +584,7 @@ oss_setup_sample_format(int fd, AudioFormat &audio_format, /* the requested sample format is not available - probe for other formats supported by MPD */ - static const SampleFormat sample_formats[] = { + static constexpr SampleFormat sample_formats[] = { SampleFormat::S24_P32, SampleFormat::S32, SampleFormat::S16, @@ -609,18 +621,14 @@ oss_setup_sample_format(int fd, AudioFormat &audio_format, return false; } -/** - * Sets up the OSS device which was opened before. - */ -static bool -oss_setup(OssOutput *od, AudioFormat &audio_format, - Error &error) +inline bool +OssOutput::Setup(AudioFormat &_audio_format, Error &error) { - return oss_setup_channels(od->fd, audio_format, error) && - oss_setup_sample_rate(od->fd, audio_format, error) && - oss_setup_sample_format(od->fd, audio_format, &od->oss_format, + return oss_setup_channels(fd, _audio_format, error) && + oss_setup_sample_rate(fd, _audio_format, error) && + oss_setup_sample_format(fd, _audio_format, &oss_format, #ifdef AFMT_S24_PACKED - od->pcm_export, + pcm_export, #endif error); } @@ -628,46 +636,46 @@ oss_setup(OssOutput *od, AudioFormat &audio_format, /** * Reopen the device with the saved audio_format, without any probing. */ -static bool -oss_reopen(OssOutput *od, Error &error) +inline bool +OssOutput::Reopen(Error &error) { - assert(od->fd < 0); + assert(fd < 0); - od->fd = open_cloexec(od->device, O_WRONLY, 0); - if (od->fd < 0) { + fd = open_cloexec(device, O_WRONLY, 0); + if (fd < 0) { error.FormatErrno("Error opening OSS device \"%s\"", - od->device); + device); return false; } enum oss_setup_result result; const char *const msg1 = "Failed to set channel count"; - result = oss_try_ioctl(od->fd, SNDCTL_DSP_CHANNELS, - od->audio_format.channels, msg1, error); + result = oss_try_ioctl(fd, SNDCTL_DSP_CHANNELS, + audio_format.channels, msg1, error); if (result != SUCCESS) { - oss_close(od); + DoClose(); if (result == UNSUPPORTED) error.Set(oss_output_domain, msg1); return false; } const char *const msg2 = "Failed to set sample rate"; - result = oss_try_ioctl(od->fd, SNDCTL_DSP_SPEED, - od->audio_format.sample_rate, msg2, error); + result = oss_try_ioctl(fd, SNDCTL_DSP_SPEED, + audio_format.sample_rate, msg2, error); if (result != SUCCESS) { - oss_close(od); + DoClose(); if (result == UNSUPPORTED) error.Set(oss_output_domain, msg2); return false; } const char *const msg3 = "Failed to set sample format"; - result = oss_try_ioctl(od->fd, SNDCTL_DSP_SAMPLESIZE, - od->oss_format, + result = oss_try_ioctl(fd, SNDCTL_DSP_SAMPLESIZE, + oss_format, msg3, error); if (result != SUCCESS) { - oss_close(od); + DoClose(); if (result == UNSUPPORTED) error.Set(oss_output_domain, msg3); return false; @@ -676,62 +684,47 @@ oss_reopen(OssOutput *od, Error &error) return true; } -static bool -oss_output_open(AudioOutput *ao, AudioFormat &audio_format, - Error &error) +inline bool +OssOutput::Open(AudioFormat &_audio_format, Error &error) { - OssOutput *od = (OssOutput *)ao; - - od->fd = open_cloexec(od->device, O_WRONLY, 0); - if (od->fd < 0) { + fd = open_cloexec(device, O_WRONLY, 0); + if (fd < 0) { error.FormatErrno("Error opening OSS device \"%s\"", - od->device); + device); return false; } - if (!oss_setup(od, audio_format, error)) { - oss_close(od); + if (!Setup(_audio_format, error)) { + DoClose(); return false; } - od->audio_format = audio_format; + audio_format = _audio_format; return true; } -static void -oss_output_close(AudioOutput *ao) +inline void +OssOutput::Cancel() { - OssOutput *od = (OssOutput *)ao; - - oss_close(od); -} - -static void -oss_output_cancel(AudioOutput *ao) -{ - OssOutput *od = (OssOutput *)ao; - - if (od->fd >= 0) { - ioctl(od->fd, SNDCTL_DSP_RESET, 0); - oss_close(od); + if (fd >= 0) { + ioctl(fd, SNDCTL_DSP_RESET, 0); + DoClose(); } } -static size_t -oss_output_play(AudioOutput *ao, const void *chunk, size_t size, - Error &error) +inline size_t +OssOutput::Play(const void *chunk, size_t size, Error &error) { - OssOutput *od = (OssOutput *)ao; ssize_t ret; assert(size > 0); /* reopen the device since it was closed by dropBufferedAudio */ - if (od->fd < 0 && !oss_reopen(od, error)) + if (fd < 0 && !Reopen(error)) return 0; #ifdef AFMT_S24_PACKED - const auto e = od->pcm_export->Export({chunk, size}); + const auto e = pcm_export->Export({chunk, size}); chunk = e.data; size = e.size; #endif @@ -739,40 +732,42 @@ oss_output_play(AudioOutput *ao, const void *chunk, size_t size, assert(size > 0); while (true) { - ret = write(od->fd, chunk, size); + ret = write(fd, chunk, size); if (ret > 0) { #ifdef AFMT_S24_PACKED - ret = od->pcm_export->CalcSourceSize(ret); + ret = pcm_export->CalcSourceSize(ret); #endif return ret; } if (ret < 0 && errno != EINTR) { - error.FormatErrno("Write error on %s", od->device); + error.FormatErrno("Write error on %s", device); return 0; } } } +typedef AudioOutputWrapper<OssOutput> Wrapper; + const struct AudioOutputPlugin oss_output_plugin = { "oss", oss_output_test_default_device, - oss_output_init, - oss_output_finish, + &Wrapper::Init, + &Wrapper::Finish, #ifdef AFMT_S24_PACKED - oss_output_enable, - oss_output_disable, + &Wrapper::Enable, + &Wrapper::Disable, #else nullptr, nullptr, #endif - oss_output_open, - oss_output_close, + &Wrapper::Open, + &Wrapper::Close, nullptr, nullptr, - oss_output_play, + &Wrapper::Play, nullptr, - oss_output_cancel, + &Wrapper::Cancel, nullptr, &oss_mixer_plugin, |