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pulse: Expose the correct max rate that we support

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PulseAudio defines PA_RATE_MAX as the maximum sampling rate that it
supports. We were previously exposing a maximum rate of INT_MAX, which
is incorrect, but worked because nothing was really using a rate greater
than 384000 kHz.

While playing DSD data, we hit a case where there might be very high
sample rates (>1MHz), and pulsesink fails during stream creation with
such streams because it erroneously advertises that it supports such
rates.

Since PA_RATE_MAX is #define'd to (8*48000U), we can't just use it in
the caps string. Instead, we fix up the rate to what we actually support
whenever we use our macro caps.
This commit is contained in:
Arun Raghavan 2018-11-19 20:05:39 +05:30 committed by Arun Raghavan
parent 753b7c17f3
commit a24ef929a4
4 changed files with 60 additions and 14 deletions
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13
ext/pulse/pulsesink.c
View file

@ -1815,11 +1815,6 @@ static gboolean gst_pulsesink_query (GstBaseSink * sink, GstQuery * query);
static GstStateChangeReturn gst_pulsesink_change_state (GstElement * element,
GstStateChange transition);
static GstStaticPadTemplate pad_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (PULSE_SINK_TEMPLATE_CAPS));
#define gst_pulsesink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstPulseSink, gst_pulsesink, GST_TYPE_AUDIO_BASE_SINK,
gst_pulsesink_init_contexts ();
@ -1891,6 +1886,7 @@ gst_pulsesink_class_init (GstPulseSinkClass * klass)
GstBaseSinkClass *bc;
GstAudioBaseSinkClass *gstaudiosink_class = GST_AUDIO_BASE_SINK_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GstCaps *caps;
gchar *clientname;
gobject_class->finalize = gst_pulsesink_finalize;
@ -1983,7 +1979,12 @@ gst_pulsesink_class_init (GstPulseSinkClass * klass)
gst_element_class_set_static_metadata (gstelement_class,
"PulseAudio Audio Sink",
"Sink/Audio", "Plays audio to a PulseAudio server", "Lennart Poettering");
gst_element_class_add_static_pad_template (gstelement_class, &pad_template);
caps =
gst_pulse_fix_pcm_caps (gst_caps_from_string (PULSE_SINK_TEMPLATE_CAPS));
gst_element_class_add_pad_template (gstelement_class,
gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, caps));
gst_caps_unref (caps);
}
static void

13
ext/pulse/pulsesrc.c
View file

@ -112,12 +112,6 @@ static GstStateChangeReturn gst_pulsesrc_change_state (GstElement *
static GstClockTime gst_pulsesrc_get_time (GstClock * clock, GstPulseSrc * src);
static GstStaticPadTemplate pad_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (_PULSE_CAPS_PCM)
);
#define gst_pulsesrc_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstPulseSrc, gst_pulsesrc, GST_TYPE_AUDIO_SRC,
G_IMPLEMENT_INTERFACE (GST_TYPE_STREAM_VOLUME, NULL));
@ -129,6 +123,7 @@ gst_pulsesrc_class_init (GstPulseSrcClass * klass)
GstAudioSrcClass *gstaudiosrc_class = GST_AUDIO_SRC_CLASS (klass);
GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
GstCaps *caps;
gchar *clientname;
gobject_class->finalize = gst_pulsesrc_finalize;
@ -222,7 +217,11 @@ gst_pulsesrc_class_init (GstPulseSrcClass * klass)
"PulseAudio Audio Source",
"Source/Audio",
"Captures audio from a PulseAudio server", "Lennart Poettering");
gst_element_class_add_static_pad_template (gstelement_class, &pad_template);
caps = gst_pulse_fix_pcm_caps (gst_caps_from_string (_PULSE_CAPS_PCM));
gst_element_class_add_pad_template (gstelement_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps));
gst_caps_unref (caps);
/**
* GstPulseSrc:volume:

45
ext/pulse/pulseutil.c
View file

@ -450,7 +450,7 @@ gst_pulse_format_info_to_caps (pa_format_info * format)
if (pa_format_info_get_prop_string (format,
PA_PROP_FORMAT_SAMPLE_FORMAT, &tmp)) {
/* No specific sample format means any sample format */
ret = gst_caps_from_string (_PULSE_CAPS_PCM);
ret = gst_pulse_fix_pcm_caps (gst_caps_from_string (_PULSE_CAPS_PCM));
goto out;
} else if (ss.format == PA_SAMPLE_ALAW) {
@ -507,3 +507,46 @@ gst_pulse_format_info_to_caps (pa_format_info * format)
out:
return ret;
}
GstCaps *
gst_pulse_fix_pcm_caps (GstCaps * incaps)
{
GstCaps *outcaps;
int i;
outcaps = gst_caps_make_writable (incaps);
for (i = 0; i < gst_caps_get_size (outcaps); i++) {
GstStructure *st = gst_caps_get_structure (outcaps, i);
const gchar *format = gst_structure_get_name (st);
const GValue *value;
GValue new_value = G_VALUE_INIT;
gint min, max, step;
if (!(g_str_equal (format, "audio/x-raw") ||
g_str_equal (format, "audio/x-alaw") ||
g_str_equal (format, "audio/x-mulaw")))
continue;
value = gst_structure_get_value (st, "rate");
if (!GST_VALUE_HOLDS_INT_RANGE (value))
continue;
min = gst_value_get_int_range_min (value);
max = gst_value_get_int_range_max (value);
step = gst_value_get_int_range_step (value);
if (min > PA_RATE_MAX)
min = PA_RATE_MAX;
if (max > PA_RATE_MAX)
max = PA_RATE_MAX;
g_value_init (&new_value, GST_TYPE_INT_RANGE);
gst_value_set_int_range_step (&new_value, min, max, step);
gst_structure_take_value (st, "rate", &new_value);
}
return outcaps;
}

3
ext/pulse/pulseutil.h
View file

@ -40,6 +40,8 @@
"S24BE, S24LE, S24_32BE, S24_32LE, U8 }"
#endif
/* NOTE! that we do NOT actually support rate=MAX. This must be fixed up using
* gst_pulse_fix_pcm_caps() before being used. */
#define _PULSE_CAPS_LINEAR \
"audio/x-raw, " \
"format = (string) " _PULSE_FORMATS ", " \
@ -90,5 +92,6 @@ pa_proplist *gst_pulse_make_proplist (const GstStructure *properties);
GstStructure *gst_pulse_make_structure (pa_proplist *properties);
GstCaps * gst_pulse_format_info_to_caps (pa_format_info * format);
GstCaps * gst_pulse_fix_pcm_caps (GstCaps * incaps);
#endif