From f5046759cdd72daf5ba3b31c9dfc7b8d5be6bc9b Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 8 Sep 2009 23:46:23 +0200 Subject: llvm-clang-analyzer: drop a few unnecessary assignments and other trivial fixes --- src/modules/alsa/alsa-util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/modules/alsa/alsa-util.c') diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c index a47a8958..4d75c63c 100644 --- a/src/modules/alsa/alsa-util.c +++ b/src/modules/alsa/alsa-util.c @@ -900,7 +900,7 @@ void pa_alsa_init_proplist_ctl(pa_proplist *p, const char *name) { snd_ctl_card_info_alloca(&info); if ((err = snd_ctl_open(&ctl, name, 0)) < 0) { - pa_log_warn("Error opening low-level control device '%s'", name); + pa_log_warn("Error opening low-level control device '%s': %s", name, snd_strerror(err)); return; } -- cgit From 557c4295107dc7374c850b0bd5331dd35e8fdd0f Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 9 Sep 2009 04:28:52 +0200 Subject: alsa: rework buffer/period configuration - As discussed on alsa-devel it's probably better to initialize the buffer size first, followed by the period size. If that fails try the other way round. If that fails try to configure only buffer size. If that fails try to configure only period size. Finally, try to configure neither. - Don't require integral periods anymore. Both of these changes should help improving compatibility with various weirder sound devices, such as TV cards. --- src/modules/alsa/alsa-util.c | 248 ++++++++++++++++++++++++++++--------------- 1 file changed, 164 insertions(+), 84 deletions(-) (limited to 'src/modules/alsa/alsa-util.c') diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c index 4d75c63c..91474527 100644 --- a/src/modules/alsa/alsa-util.c +++ b/src/modules/alsa/alsa-util.c @@ -93,6 +93,7 @@ static int set_format(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, pa_s int ret; pa_assert(pcm_handle); + pa_assert(hwparams); pa_assert(f); if ((ret = snd_pcm_hw_params_set_format(pcm_handle, hwparams, format_trans[*f])) >= 0) @@ -148,33 +149,71 @@ try_auto: return -1; } +static int set_period_size(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, snd_pcm_uframes_t size) { + snd_pcm_uframes_t s; + int d, ret; + + pa_assert(pcm_handle); + pa_assert(hwparams); + + s = size; + d = 0; + if (snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &s, &d) < 0) { + s = size; + d = -1; + if (snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &s, &d) < 0) { + s = size; + d = 1; + if ((ret = snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams, &s, &d)) < 0) { + pa_log_info("snd_pcm_hw_params_set_period_size_near() failed: %s", pa_alsa_strerror(ret)); + return ret; + } + } + } + + return 0; +} + +static int set_buffer_size(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, snd_pcm_uframes_t size) { + int ret; + + pa_assert(pcm_handle); + pa_assert(hwparams); + + if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &size)) < 0) { + pa_log_info("snd_pcm_hw_params_set_buffer_size_near() failed: %s", pa_alsa_strerror(ret)); + return ret; + } + + return 0; +} + /* Set the hardware parameters of the given ALSA device. Returns the * selected fragment settings in *period and *period_size */ int pa_alsa_set_hw_params( snd_pcm_t *pcm_handle, pa_sample_spec *ss, - uint32_t *periods, snd_pcm_uframes_t *period_size, + snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, pa_bool_t *use_mmap, pa_bool_t *use_tsched, pa_bool_t require_exact_channel_number) { int ret = -1; + snd_pcm_hw_params_t *hwparams, *hwparams_copy; + int dir; snd_pcm_uframes_t _period_size = period_size ? *period_size : 0; - unsigned int _periods = periods ? *periods : 0; - unsigned int r = ss->rate; - unsigned int c = ss->channels; - pa_sample_format_t f = ss->format; - snd_pcm_hw_params_t *hwparams; + snd_pcm_uframes_t _buffer_size = buffer_size ? *buffer_size : 0; pa_bool_t _use_mmap = use_mmap && *use_mmap; pa_bool_t _use_tsched = use_tsched && *use_tsched; - int dir; + pa_sample_spec _ss = *ss; pa_assert(pcm_handle); pa_assert(ss); snd_pcm_hw_params_alloca(&hwparams); + snd_pcm_hw_params_alloca(&hwparams_copy); if ((ret = snd_pcm_hw_params_any(pcm_handle, hwparams)) < 0) { pa_log_debug("snd_pcm_hw_params_any() failed: %s", pa_alsa_strerror(ret)); @@ -208,114 +247,140 @@ int pa_alsa_set_hw_params( if (!_use_mmap) _use_tsched = FALSE; - if ((ret = set_format(pcm_handle, hwparams, &f)) < 0) + if ((ret = set_format(pcm_handle, hwparams, &_ss.format)) < 0) goto finish; - if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &r, NULL)) < 0) { + if ((ret = snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams, &_ss.rate, NULL)) < 0) { pa_log_debug("snd_pcm_hw_params_set_rate_near() failed: %s", pa_alsa_strerror(ret)); goto finish; } if (require_exact_channel_number) { - if ((ret = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, c)) < 0) { - pa_log_debug("snd_pcm_hw_params_set_channels(%u) failed: %s", c, pa_alsa_strerror(ret)); + if ((ret = snd_pcm_hw_params_set_channels(pcm_handle, hwparams, _ss.channels)) < 0) { + pa_log_debug("snd_pcm_hw_params_set_channels(%u) failed: %s", _ss.channels, pa_alsa_strerror(ret)); goto finish; } } else { + unsigned int c = _ss.channels; + if ((ret = snd_pcm_hw_params_set_channels_near(pcm_handle, hwparams, &c)) < 0) { - pa_log_debug("snd_pcm_hw_params_set_channels_near(%u) failed: %s", c, pa_alsa_strerror(ret)); + pa_log_debug("snd_pcm_hw_params_set_channels_near(%u) failed: %s", _ss.channels, pa_alsa_strerror(ret)); goto finish; } - } - if ((ret = snd_pcm_hw_params_set_periods_integer(pcm_handle, hwparams)) < 0) { - pa_log_debug("snd_pcm_hw_params_set_periods_integer() failed: %s", pa_alsa_strerror(ret)); - goto finish; + _ss.channels = c; } - if (_period_size > 0 && tsched_size > 0 && _periods > 0) { - snd_pcm_uframes_t buffer_size; - unsigned int p; + if (_use_tsched && tsched_size > 0) { + _buffer_size = pa_convert_size(tsched_size, ss, &_ss); + _period_size = _buffer_size; + } else { + _period_size = pa_convert_size(_period_size, ss, &_ss); + _buffer_size = pa_convert_size(_buffer_size, ss, &_ss); + } - /* Adjust the buffer sizes, if we didn't get the rate we were asking for */ - _period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * r) / ss->rate); - tsched_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * r) / ss->rate); + if (_buffer_size > 0 || _period_size > 0) { + snd_pcm_uframes_t max_frames = 0; - if (_use_tsched) { - buffer_size = 0; + if ((ret = snd_pcm_hw_params_get_buffer_size_max(hwparams, &max_frames)) < 0) + pa_log_warn("snd_pcm_hw_params_get_buffer_size_max() failed: %s", pa_alsa_strerror(ret)); + else + pa_log_debug("Maximum hw buffer size is %lu ms", (long unsigned) max_frames * PA_MSEC_PER_SEC / _ss.rate); - if ((ret = snd_pcm_hw_params_get_buffer_size_max(hwparams, &buffer_size)) < 0) - pa_log_warn("snd_pcm_hw_params_get_buffer_size_max() failed: %s", pa_alsa_strerror(ret)); - else - pa_log_debug("Maximum hw buffer size is %u ms", (unsigned) buffer_size * 1000 / r); + /* Some ALSA drivers really don't like if we set the buffer + * size first and the number of periods second. (which would + * make a lot more sense to me) So, try a few combinations + * before we give up. */ + + if (_buffer_size > 0 && _period_size > 0) { + snd_pcm_hw_params_copy(hwparams_copy, hwparams); + + /* First try: set buffer size first, followed by period size */ + if (set_buffer_size(pcm_handle, hwparams_copy, _buffer_size) >= 0 && + set_period_size(pcm_handle, hwparams_copy, _period_size) >= 0 && + snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) { + pa_log_debug("Set buffer size first, period size second."); + goto success; + } - _period_size = tsched_size; - _periods = 1; + /* Second try: set period size first, followed by buffer size */ + if (set_period_size(pcm_handle, hwparams_copy, _period_size) >= 0 && + set_buffer_size(pcm_handle, hwparams_copy, _buffer_size) >= 0 && + snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) { + pa_log_debug("Set period size first, buffer size second."); + goto success; + } } - /* Some ALSA drivers really don't like if we set the buffer - * size first and the number of periods second. (which would - * make a lot more sense to me) So, follow this rule and - * adjust the periods first and the buffer size second */ - - /* First we pass 0 as direction to get exactly what we - * asked for. That this is necessary is presumably a bug - * in ALSA. All in all this is mostly a hint to ALSA, so - * we don't care if this fails. */ - - p = _periods; - dir = 0; - if (snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &p, &dir) < 0) { - p = _periods; - dir = 1; - if (snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &p, &dir) < 0) { - p = _periods; - dir = -1; - if ((ret = snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, &p, &dir)) < 0) - pa_log_info("snd_pcm_hw_params_set_periods_near() failed: %s", pa_alsa_strerror(ret)); + if (_buffer_size > 0) { + snd_pcm_hw_params_copy(hwparams_copy, hwparams); + + /* Third try: set only buffer size */ + if (set_buffer_size(pcm_handle, hwparams_copy, _buffer_size) >= 0 && + snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) { + pa_log_debug("Set only buffer size second."); + goto success; } } - /* Now set the buffer size */ - buffer_size = _periods * _period_size; - if ((ret = snd_pcm_hw_params_set_buffer_size_near(pcm_handle, hwparams, &buffer_size)) < 0) - pa_log_info("snd_pcm_hw_params_set_buffer_size_near() failed: %s", pa_alsa_strerror(ret)); + if (_period_size > 0) { + snd_pcm_hw_params_copy(hwparams_copy, hwparams); + + /* Fourth try: set only period size */ + if (set_period_size(pcm_handle, hwparams_copy, _period_size) >= 0 && + snd_pcm_hw_params(pcm_handle, hwparams_copy) >= 0) { + pa_log_debug("Set only period size second."); + goto success; + } + } } - if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0) + pa_log_debug("Set neither period nor buffer size."); + + /* Last chance, set nothing */ + if ((ret = snd_pcm_hw_params(pcm_handle, hwparams)) < 0) { + pa_log_info("snd_pcm_hw_params failed: %s", pa_alsa_strerror(ret)); goto finish; + } + +success: - if (ss->rate != r) - pa_log_info("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, r); + if (ss->rate != _ss.rate) + pa_log_info("Device %s doesn't support %u Hz, changed to %u Hz.", snd_pcm_name(pcm_handle), ss->rate, _ss.rate); - if (ss->channels != c) - pa_log_info("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, c); + if (ss->channels != _ss.channels) + pa_log_info("Device %s doesn't support %u channels, changed to %u.", snd_pcm_name(pcm_handle), ss->channels, _ss.channels); - if (ss->format != f) - pa_log_info("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(f)); + if (ss->format != _ss.format) + pa_log_info("Device %s doesn't support sample format %s, changed to %s.", snd_pcm_name(pcm_handle), pa_sample_format_to_string(ss->format), pa_sample_format_to_string(_ss.format)); if ((ret = snd_pcm_prepare(pcm_handle)) < 0) { pa_log_info("snd_pcm_prepare() failed: %s", pa_alsa_strerror(ret)); goto finish; } + if ((ret = snd_pcm_hw_params_current(pcm_handle, hwparams)) < 0) { + pa_log_info("snd_pcm_hw_params_current() failed: %s", pa_alsa_strerror(ret)); + goto finish; + } + if ((ret = snd_pcm_hw_params_get_period_size(hwparams, &_period_size, &dir)) < 0 || - (ret = snd_pcm_hw_params_get_periods(hwparams, &_periods, &dir)) < 0) { - pa_log_info("snd_pcm_hw_params_get_period{s|_size}() failed: %s", pa_alsa_strerror(ret)); + (ret = snd_pcm_hw_params_get_buffer_size(hwparams, &_buffer_size)) < 0) { + pa_log_info("snd_pcm_hw_params_get_{period|buffer}_size() failed: %s", pa_alsa_strerror(ret)); goto finish; } /* If the sample rate deviates too much, we need to resample */ - if (r < ss->rate*.95 || r > ss->rate*1.05) - ss->rate = r; - ss->channels = (uint8_t) c; - ss->format = f; + if (_ss.rate < ss->rate*.95 || _ss.rate > ss->rate*1.05) + ss->rate = _ss.rate; + ss->channels = _ss.channels; + ss->format = _ss.format; - pa_assert(_periods > 0); pa_assert(_period_size > 0); + pa_assert(_buffer_size > 0); - if (periods) - *periods = _periods; + if (buffer_size) + *buffer_size = _buffer_size; if (period_size) *period_size = _period_size; @@ -393,8 +458,8 @@ snd_pcm_t *pa_alsa_open_by_device_id_auto( pa_sample_spec *ss, pa_channel_map* map, int mode, - uint32_t *nfrags, snd_pcm_uframes_t *period_size, + snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, pa_bool_t *use_mmap, pa_bool_t *use_tsched, @@ -410,8 +475,6 @@ snd_pcm_t *pa_alsa_open_by_device_id_auto( pa_assert(dev); pa_assert(ss); pa_assert(map); - pa_assert(nfrags); - pa_assert(period_size); pa_assert(ps); /* First we try to find a device string with a superset of the @@ -433,8 +496,8 @@ snd_pcm_t *pa_alsa_open_by_device_id_auto( ss, map, mode, - nfrags, period_size, + buffer_size, tsched_size, use_mmap, use_tsched, @@ -460,8 +523,8 @@ snd_pcm_t *pa_alsa_open_by_device_id_auto( ss, map, mode, - nfrags, period_size, + buffer_size, tsched_size, use_mmap, use_tsched, @@ -478,7 +541,18 @@ snd_pcm_t *pa_alsa_open_by_device_id_auto( /* OK, we didn't find any good device, so let's try the raw hw: stuff */ d = pa_sprintf_malloc("hw:%s", dev_id); pa_log_debug("Trying %s as last resort...", d); - pcm_handle = pa_alsa_open_by_device_string(d, dev, ss, map, mode, nfrags, period_size, tsched_size, use_mmap, use_tsched, FALSE); + pcm_handle = pa_alsa_open_by_device_string( + d, + dev, + ss, + map, + mode, + period_size, + buffer_size, + tsched_size, + use_mmap, + use_tsched, + FALSE); pa_xfree(d); if (pcm_handle && mapping) @@ -493,8 +567,8 @@ snd_pcm_t *pa_alsa_open_by_device_id_mapping( pa_sample_spec *ss, pa_channel_map* map, int mode, - uint32_t *nfrags, snd_pcm_uframes_t *period_size, + snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, pa_bool_t *use_mmap, pa_bool_t *use_tsched, @@ -508,8 +582,6 @@ snd_pcm_t *pa_alsa_open_by_device_id_mapping( pa_assert(dev); pa_assert(ss); pa_assert(map); - pa_assert(nfrags); - pa_assert(period_size); pa_assert(m); try_ss.channels = m->channel_map.channels; @@ -524,8 +596,8 @@ snd_pcm_t *pa_alsa_open_by_device_id_mapping( &try_ss, &try_map, mode, - nfrags, period_size, + buffer_size, tsched_size, use_mmap, use_tsched, @@ -547,8 +619,8 @@ snd_pcm_t *pa_alsa_open_by_device_string( pa_sample_spec *ss, pa_channel_map* map, int mode, - uint32_t *nfrags, snd_pcm_uframes_t *period_size, + snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, pa_bool_t *use_mmap, pa_bool_t *use_tsched, @@ -579,7 +651,15 @@ snd_pcm_t *pa_alsa_open_by_device_string( pa_log_debug("Managed to open %s", d); - if ((err = pa_alsa_set_hw_params(pcm_handle, ss, nfrags, period_size, tsched_size, use_mmap, use_tsched, require_exact_channel_number)) < 0) { + if ((err = pa_alsa_set_hw_params( + pcm_handle, + ss, + period_size, + buffer_size, + tsched_size, + use_mmap, + use_tsched, + require_exact_channel_number)) < 0) { if (!reformat) { reformat = TRUE; @@ -632,8 +712,8 @@ snd_pcm_t *pa_alsa_open_by_template( pa_sample_spec *ss, pa_channel_map* map, int mode, - uint32_t *nfrags, snd_pcm_uframes_t *period_size, + snd_pcm_uframes_t *buffer_size, snd_pcm_uframes_t tsched_size, pa_bool_t *use_mmap, pa_bool_t *use_tsched, @@ -653,8 +733,8 @@ snd_pcm_t *pa_alsa_open_by_template( ss, map, mode, - nfrags, period_size, + buffer_size, tsched_size, use_mmap, use_tsched, -- cgit From d5f43bd4c6a7eecff7bc0c4ff1be9152b33cb1e0 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 9 Sep 2009 23:57:49 +0200 Subject: alsa: disable tsched for software devices before we configure the buffer metrics so that we don't accidently set a buffer size that is suitable for tsched where we don't use tsched --- src/modules/alsa/alsa-util.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'src/modules/alsa/alsa-util.c') diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c index 91474527..f934285a 100644 --- a/src/modules/alsa/alsa-util.c +++ b/src/modules/alsa/alsa-util.c @@ -189,7 +189,7 @@ static int set_buffer_size(snd_pcm_t *pcm_handle, snd_pcm_hw_params_t *hwparams, } /* Set the hardware parameters of the given ALSA device. Returns the - * selected fragment settings in *period and *period_size */ + * selected fragment settings in *buffer_size and *period_size. If tsched mode can be enabled */ int pa_alsa_set_hw_params( snd_pcm_t *pcm_handle, pa_sample_spec *ss, @@ -247,6 +247,9 @@ int pa_alsa_set_hw_params( if (!_use_mmap) _use_tsched = FALSE; + if (!pa_alsa_pcm_is_hw(pcm_handle)) + _use_tsched = FALSE; + if ((ret = set_format(pcm_handle, hwparams, &_ss.format)) < 0) goto finish; -- cgit From bb36bb4bbe1ee01fb95debdca79d9769851a06da Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Fri, 11 Sep 2009 01:21:46 +0200 Subject: alsa: properly convert sample buffer sizes --- src/modules/alsa/alsa-util.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'src/modules/alsa/alsa-util.c') diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c index f934285a..56d60dfb 100644 --- a/src/modules/alsa/alsa-util.c +++ b/src/modules/alsa/alsa-util.c @@ -275,11 +275,11 @@ int pa_alsa_set_hw_params( } if (_use_tsched && tsched_size > 0) { - _buffer_size = pa_convert_size(tsched_size, ss, &_ss); + _buffer_size = (snd_pcm_uframes_t) (((uint64_t) tsched_size * _ss.rate) / ss->rate); _period_size = _buffer_size; } else { - _period_size = pa_convert_size(_period_size, ss, &_ss); - _buffer_size = pa_convert_size(_buffer_size, ss, &_ss); + _period_size = (snd_pcm_uframes_t) (((uint64_t) _period_size * _ss.rate) / ss->rate); + _buffer_size = (snd_pcm_uframes_t) (((uint64_t) _buffer_size * _ss.rate) / ss->rate); } if (_buffer_size > 0 || _period_size > 0) { -- cgit From 88b777311d12502e36e2c74898015bcd55d92155 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Sun, 20 Sep 2009 03:17:36 +0200 Subject: alsa: make build gcc clean on 32bit --- src/modules/alsa/alsa-util.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/modules/alsa/alsa-util.c') diff --git a/src/modules/alsa/alsa-util.c b/src/modules/alsa/alsa-util.c index 56d60dfb..43a8e829 100644 --- a/src/modules/alsa/alsa-util.c +++ b/src/modules/alsa/alsa-util.c @@ -288,7 +288,7 @@ int pa_alsa_set_hw_params( if ((ret = snd_pcm_hw_params_get_buffer_size_max(hwparams, &max_frames)) < 0) pa_log_warn("snd_pcm_hw_params_get_buffer_size_max() failed: %s", pa_alsa_strerror(ret)); else - pa_log_debug("Maximum hw buffer size is %lu ms", (long unsigned) max_frames * PA_MSEC_PER_SEC / _ss.rate); + pa_log_debug("Maximum hw buffer size is %lu ms", (long unsigned) (max_frames * PA_MSEC_PER_SEC / _ss.rate)); /* Some ALSA drivers really don't like if we set the buffer * size first and the number of periods second. (which would -- cgit