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ext/hal/: Having NULL as UDI previously selected the default sink/src. Change this back but mention it in the debug o...
Original commit message from CVS: * ext/hal/gsthalaudiosink.c: (do_toggle_element): * ext/hal/gsthalaudiosrc.c: (do_toggle_element): Having NULL as UDI previously selected the default sink/src. Change this back but mention it in the debug output. * ext/hal/hal.c: (gst_hal_get_alsa_element), (gst_hal_get_oss_element), (gst_hal_get_string), (gst_hal_render_bin_from_udi), (gst_hal_get_audio_sink), (gst_hal_get_audio_src): * ext/hal/hal.h: Refactor a bit, check all error conditions, greatly improve debugging and fix some possible memory leaks. Also implement OSS support and allow specifying an UDI that points to a real device. For this the child device which supports ALSA (preferred) or OSS is used. As a side effect this makes it impossible now to get a alsasink in halaudiosrc and a alsasrc in halaudiosink.
This commit is contained in:
Sebastian Dröge
parent
84c6cb989a
commit
8b65d9d182
5 changed files with 302 additions and 71 deletions
18
ChangeLog
18
ChangeLog
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@ -1,3 +1,21 @@
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2007-03-01 Sebastian Dröge <slomo@circular-chaos.org>
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* ext/hal/gsthalaudiosink.c: (do_toggle_element):
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* ext/hal/gsthalaudiosrc.c: (do_toggle_element):
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Having NULL as UDI previously selected the default sink/src. Change
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this back but mention it in the debug output.
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* ext/hal/hal.c: (gst_hal_get_alsa_element),
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(gst_hal_get_oss_element), (gst_hal_get_string),
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(gst_hal_render_bin_from_udi), (gst_hal_get_audio_sink),
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(gst_hal_get_audio_src):
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* ext/hal/hal.h:
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Refactor a bit, check all error conditions, greatly improve debugging
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and fix some possible memory leaks. Also implement OSS support
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and allow specifying an UDI that points to a real device. For this the
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child device which supports ALSA (preferred) or OSS is used.
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As a side effect this makes it impossible now to get a alsasink in
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halaudiosrc and a alsasrc in halaudiosink.
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2007-03-01 Wim Taymans <wim@fluendo.com>
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* gst/rtsp/gstrtspsrc.c: (find_stream_by_channel),
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@ -26,8 +26,9 @@
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* HalAudioSink allows access to output of sound devices by specifying the
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* corresponding persistent Unique Device Id (UDI) from the Hardware Abstraction
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* Layer (HAL) in the <link linkend="GstHalAudioSrc--udi">udi</link> property.
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* It currently always embeds alsasink as HAL doesn't support other sound
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* systems yet.
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* It currently always embeds alsasink or osssink as HAL doesn't support other
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* sound systems yet. You can also specify the UDI of a device that has ALSA or
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* OSS subdevices. If both are present ALSA is preferred.
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* </para>
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* <title>Examples</title>
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* <para>
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@ -162,11 +163,10 @@ do_toggle_element (GstHalAudioSink * sink)
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}
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GST_DEBUG_OBJECT (sink, "Creating new kid");
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if (!sink->udi) {
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GST_ELEMENT_ERROR (sink, LIBRARY, SETTINGS, (NULL),
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("No UDI set for device"));
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return FALSE;
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} else if (!(sink->kid = gst_hal_get_audio_sink (sink->udi))) {
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if (!sink->udi)
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GST_INFO_OBJECT (sink, "No UDI set for device, using default one");
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if (!(sink->kid = gst_hal_get_audio_sink (sink->udi))) {
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GST_ELEMENT_ERROR (sink, LIBRARY, SETTINGS, (NULL),
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("Failed to render audio sink from Hal"));
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return FALSE;
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@ -27,8 +27,9 @@
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* HalAudioSrc allows access to input of sound devices by specifying the
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* corresponding persistent Unique Device Id (UDI) from the Hardware Abstraction
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* Layer (HAL) in the <link linkend="GstHalAudioSrc--udi">udi</link> property.
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* It currently always embeds alsasrc as HAL doesn't support other sound systems
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* yet.
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* It currently always embeds alsasrc or osssrc as HAL doesn't support other
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* sound systems yet. You can also specify the UDI of a device that has ALSA or
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* OSS subdevices. If both are present ALSA is preferred.
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* </para>
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* <title>Examples</title>
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* <para>
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@ -164,11 +165,10 @@ do_toggle_element (GstHalAudioSrc * src)
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}
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GST_DEBUG_OBJECT (src, "Creating new kid");
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if (!src->udi) {
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GST_ELEMENT_ERROR (src, LIBRARY, SETTINGS, (NULL),
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("No UDI set for device"));
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return FALSE;
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} else if (!(src->kid = gst_hal_get_audio_src (src->udi))) {
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if (!src->udi)
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GST_INFO_OBJECT (src, "No UDI set for device, using default one");
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if (!(src->kid = gst_hal_get_audio_src (src->udi))) {
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GST_ELEMENT_ERROR (src, LIBRARY, SETTINGS, (NULL),
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("Failed to render audio source from Hal"));
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return FALSE;
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314
ext/hal/hal.c
314
ext/hal/hal.c
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@ -1,6 +1,7 @@
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/* GStreamer
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* Copyright (C) <2002> Thomas Vander Stichele <thomas@apestaart.org>
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* Copyright (C) <2006> Jürg Billeter <j@bitron.ch>
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* Copyright (C) <2007> Sebastian Dröge <slomo@circular-chaos.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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@ -30,12 +31,15 @@
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#include <glib.h>
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#include "hal.h"
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GST_DEBUG_CATEGORY_EXTERN (hal_debug);
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/* external functions */
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#define GST_CAT_DEFAULT hal_debug
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/**
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* gst_hal_get_string:
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* @key: a #gchar corresponding to the key you want to get.
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* gst_hal_get_alsa_element:
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* @ctx: a #LibHalContext which should be used for querying HAL.
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* @udi: a #gchar corresponding to the UDI you want to get.
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* @device_type: a #GstHalDeviceType specifying the wanted device type.
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*
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* Get Hal UDI @udi's string value.
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*
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@ -43,12 +47,171 @@
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* for UDI @udi, or NULL in the case of an error..
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*/
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static gchar *
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gst_hal_get_string (const gchar * udi)
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gst_hal_get_alsa_element (LibHalContext * ctx, const gchar * udi,
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GstHalDeviceType device_type)
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{
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char *type, *element = NULL, *string = NULL;
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DBusError error;
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dbus_error_init (&error);
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if (!libhal_device_query_capability (ctx, udi, "alsa", &error)) {
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("Failed querying %s for alsa capability: %s: %s",
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udi, error.name, error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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} else {
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GST_DEBUG ("UDI %s has no alsa capability", udi);
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}
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return NULL;
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}
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type = libhal_device_get_property_string (ctx, udi, "alsa.type", &error);
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("UDI %s has alsa capabilities but no alsa.type property: %s, %s",
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udi, error.name, error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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return NULL;
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} else if (!type) {
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GST_DEBUG ("UDI %s has empty alsa.type property", udi);
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return NULL;
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}
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if (strcmp (type, "playback") == 0 && device_type == GST_HAL_AUDIOSINK)
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element = "alsasink";
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else if (strcmp (type, "capture") == 0 && device_type == GST_HAL_AUDIOSRC)
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element = "alsasrc";
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libhal_free_string (type);
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if (element) {
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int card, device;
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card = libhal_device_get_property_int (ctx, udi, "alsa.card", &error);
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("UDI %s has no alsa.card property: %s: %s", udi, error.name,
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error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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return NULL;
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} else if (card == -1) {
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GST_DEBUG ("UDI %s has no alsa.card property", udi);
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return NULL;
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}
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device = libhal_device_get_property_int (ctx, udi, "alsa.device", &error);
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("UDI %s has no alsa.device property: %s: %s", udi, error.name,
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error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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return NULL;
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} else if (device == -1) {
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GST_DEBUG ("UDI %s has no alsa.device property", udi);
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return NULL;
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}
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if (device == 0) {
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/* handle default device specially to use
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* dmix, dsnoop, and softvol if appropriate */
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string = g_strdup_printf ("%s device=default:%d", element, card);
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} else {
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string =
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g_strdup_printf ("%s device=plughw:%d,%d", element, card, device);
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}
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}
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return string;
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}
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/**
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* gst_hal_get_oss_element:
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* @ctx: a #LibHalContext which should be used for querying HAL.
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* @udi: a #gchar corresponding to the UDI you want to get.
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* @device_type: a #GstHalDeviceType specifying the wanted device type.
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*
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* Get Hal UDI @udi's string value.
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*
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* Returns: a newly allocated #gchar string containing the appropriate pipeline
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* for UDI @udi, or NULL in the case of an error..
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*/
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static gchar *
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gst_hal_get_oss_element (LibHalContext * ctx, const gchar * udi,
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GstHalDeviceType device_type)
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{
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char *type, *element = NULL, *string = NULL;
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DBusError error;
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dbus_error_init (&error);
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if (!libhal_device_query_capability (ctx, udi, "oss", &error)) {
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("Failed querying %s for oss capability: %s: %s", udi,
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error.name, error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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} else {
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GST_DEBUG ("UDI %s has no oss capability", udi);
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}
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return NULL;
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}
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type = libhal_device_get_property_string (ctx, udi, "oss.type", &error);
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("UDI %s has oss capabilities but no oss.type property: %s, %s",
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udi, error.name, error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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return NULL;
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} else if (!type) {
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GST_DEBUG ("UDI %s has empty oss.type property", udi);
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return NULL;
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}
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if (strcmp (type, "pcm") == 0) {
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if (device_type == GST_HAL_AUDIOSINK)
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element = "osssink";
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else if (device_type == GST_HAL_AUDIOSRC)
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element = "osssrc";
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}
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libhal_free_string (type);
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if (element) {
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char *device = NULL;
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device =
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libhal_device_get_property_string (ctx, udi, "oss.device_file", &error);
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if (dbus_error_is_set (&error)) {
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GST_DEBUG
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("UDI %s has oss capabilities but no oss.device_file property: %s, %s",
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udi, error.name, error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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return NULL;
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} else if (!device) {
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GST_DEBUG ("UDI %s has empty oss.device_file property", udi);
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return NULL;
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}
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string = g_strdup_printf ("%s device=%s", element, device);
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libhal_free_string (device);
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}
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return string;
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}
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/**
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* gst_hal_get_string:
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* @udi: a #gchar corresponding to the UDI you want to get.
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* @device_type: a #GstHalDeviceType specifying the wanted device type.
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*
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* Get Hal UDI @udi's string value.
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*
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* Returns: a newly allocated #gchar string containing the appropriate pipeline
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* for UDI @udi, or NULL in the case of an error..
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*/
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static gchar *
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gst_hal_get_string (const gchar * udi, GstHalDeviceType device_type)
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{
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DBusConnection *connection;
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DBusError error;
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LibHalContext *ctx;
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char *string;
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char *string = NULL;
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/* Don't query HAL for NULL UDIs. Passing NULL as UDI to HAL gives
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* an assertion failure in D-Bus when running with
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@ -58,69 +221,104 @@ gst_hal_get_string (const gchar * udi)
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dbus_error_init (&error);
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connection = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
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g_return_val_if_fail (connection != NULL, NULL);
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ctx = libhal_ctx_new ();
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/* Should only happen on OOM */
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g_return_val_if_fail (ctx != NULL, NULL);
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libhal_ctx_set_dbus_connection (ctx, connection);
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libhal_ctx_init (ctx, &error);
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string = NULL;
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if (libhal_device_query_capability (ctx, udi, "alsa", &error)) {
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char *type, *element = NULL;
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type = libhal_device_get_property_string (ctx, udi, "alsa.type", &error);
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if (type != NULL && strcmp (type, "playback") == 0) {
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element = "alsasink";
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} else if (type != NULL && strcmp (type, "capture") == 0) {
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element = "alsasrc";
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}
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if (element) {
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int card, device;
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card = libhal_device_get_property_int (ctx, udi, "alsa.card", &error);
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device = libhal_device_get_property_int (ctx, udi, "alsa.device", &error);
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if (device == 0) {
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/* handle default device specially to use
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* dmix, dsnoop, and softvol if appropriate */
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string = g_strdup_printf ("%s device=default:%d", element, card);
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} else {
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string =
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g_strdup_printf ("%s device=plughw:%d,%d", element, card, device);
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}
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}
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if (!libhal_ctx_set_dbus_connection (ctx, dbus_bus_get (DBUS_BUS_SYSTEM,
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&error))) {
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GST_DEBUG ("Unable to set DBus connection: %s: %s", error.name,
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error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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goto ctx_free;
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}
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libhal_ctx_shutdown (ctx, &error);
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if (!libhal_ctx_init (ctx, &error)) {
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GST_DEBUG ("Unable to set init HAL context: %s: %s", error.name,
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error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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goto ctx_free;
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}
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/* Now first check if UDI is an alsa device, then oss and then
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* check the childs of the given device. If there are alsa and oss
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* children the first alsa one is used. */
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string = gst_hal_get_alsa_element (ctx, udi, device_type);
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if (!string)
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string = gst_hal_get_oss_element (ctx, udi, device_type);
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if (!string) {
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int num_childs;
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char **childs = NULL;
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/* now try if one of the direct subdevices supports ALSA or OSS */
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childs =
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libhal_manager_find_device_string_match (ctx, "info.parent", udi,
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&num_childs, &error);
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if (dbus_error_is_set (&error)) {
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GST_DEBUG ("Unable to retrieve childs of %s: %s: %s", udi, error.name,
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error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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goto ctx_shutdown;
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}
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if (childs && num_childs > 0) {
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int i;
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char *alsa_string = NULL, *oss_string = NULL;
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for (i = 0; i < num_childs && !alsa_string; i++) {
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alsa_string = gst_hal_get_alsa_element (ctx, childs[i], device_type);
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if (!oss_string)
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oss_string = gst_hal_get_oss_element (ctx, childs[i], device_type);
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}
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if (alsa_string) {
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string = alsa_string;
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g_free (oss_string);
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} else if (oss_string) {
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string = oss_string;
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}
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}
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libhal_free_string_array (childs);
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}
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ctx_shutdown:
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if (!libhal_ctx_shutdown (ctx, &error)) {
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GST_DEBUG ("Closing connection to HAL failed: %s: %s", error.name,
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error.message);
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LIBHAL_FREE_DBUS_ERROR (&error);
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}
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ctx_free:
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libhal_ctx_free (ctx);
|
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dbus_error_free (&error);
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|
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if (string == NULL) {
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GST_WARNING ("Problem parsing HAL ALSA capabilities for udi %s", udi);
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GST_WARNING ("Problem finding a HAL audio device for udi %s", udi);
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}
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|
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return string;
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}
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/* external functions */
|
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|
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/**
|
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* gst_hal_render_bin_from_udi:
|
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* @key: a #gchar string corresponding to a Hal UDI.
|
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* @udi: a #gchar string corresponding to a Hal UDI.
|
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*
|
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* Render bin from Hal UDI @udi.
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*
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* Returns: a #GstElement containing the rendered bin.
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*/
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GstElement *
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gst_hal_render_bin_from_udi (const gchar * udi)
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gst_hal_render_bin_from_udi (const gchar * udi, GstHalDeviceType type)
|
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{
|
||||
GstElement *bin = NULL;
|
||||
gchar *value;
|
||||
|
||||
value = gst_hal_get_string (udi);
|
||||
value = gst_hal_get_string (udi, type);
|
||||
if (value)
|
||||
bin = gst_parse_bin_from_description (value, TRUE, NULL);
|
||||
g_free (value);
|
||||
|
|
@ -129,10 +327,12 @@ gst_hal_render_bin_from_udi (const gchar * udi)
|
|||
|
||||
/**
|
||||
* gst_hal_get_audio_sink:
|
||||
* @udi: a #gchar string corresponding to a Hal UDI.
|
||||
*
|
||||
* Render audio output bin from GStreamer Hal UDI.
|
||||
* If no device with the specified UDI exists, the default audio sink for the
|
||||
* platform is used (typically osssink or sunaudiosink).
|
||||
* If no device with the specified UDI exists or @udi is NULL,
|
||||
* the default audio sink for the platform is used
|
||||
* (typically alsasink, osssink or sunaudiosink).
|
||||
*
|
||||
* Returns: a #GstElement containing the audio output bin, or NULL if
|
||||
* everything failed.
|
||||
|
|
@ -140,14 +340,16 @@ gst_hal_render_bin_from_udi (const gchar * udi)
|
|||
GstElement *
|
||||
gst_hal_get_audio_sink (const gchar * udi)
|
||||
{
|
||||
GstElement *ret = gst_hal_render_bin_from_udi (udi);
|
||||
GstElement *ret = NULL;
|
||||
|
||||
if (udi)
|
||||
ret = gst_hal_render_bin_from_udi (udi, GST_HAL_AUDIOSINK);
|
||||
|
||||
if (!ret) {
|
||||
ret = gst_element_factory_make (DEFAULT_AUDIOSINK, NULL);
|
||||
|
||||
if (!ret)
|
||||
g_warning ("No Hal default audio sink key and %s doesn't work",
|
||||
DEFAULT_AUDIOSINK);
|
||||
GST_ERROR ("Hal audio sink and %s don't work", DEFAULT_AUDIOSINK);
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
|
@ -155,10 +357,12 @@ gst_hal_get_audio_sink (const gchar * udi)
|
|||
|
||||
/**
|
||||
* gst_hal_get_audio_src:
|
||||
* @udi: a #gchar string corresponding to a Hal UDI.
|
||||
*
|
||||
* Render audio acquisition bin from GStreamer Hal UDI.
|
||||
* If no device with the specified UDI exists, the default audio source for the
|
||||
* plaform is used (typically osssrc or sunaudiosrc).
|
||||
* If no device with the specified UDI exists or @udi is NULL,
|
||||
* the default audio source for the plaform is used
|
||||
* (typically alsasrc, osssrc or sunaudiosrc).
|
||||
*
|
||||
* Returns: a #GstElement containing the audio source bin, or NULL if
|
||||
* everything failed.
|
||||
|
|
@ -166,14 +370,16 @@ gst_hal_get_audio_sink (const gchar * udi)
|
|||
GstElement *
|
||||
gst_hal_get_audio_src (const gchar * udi)
|
||||
{
|
||||
GstElement *ret = gst_hal_render_bin_from_udi (udi);
|
||||
GstElement *ret = NULL;
|
||||
|
||||
if (udi)
|
||||
ret = gst_hal_render_bin_from_udi (udi, GST_HAL_AUDIOSRC);
|
||||
|
||||
if (!ret) {
|
||||
ret = gst_element_factory_make (DEFAULT_AUDIOSRC, NULL);
|
||||
|
||||
if (!ret)
|
||||
g_warning ("No Hal default audio src key and %s doesn't work",
|
||||
DEFAULT_AUDIOSRC);
|
||||
GST_ERROR ("Hal audio src and %s don't work", DEFAULT_AUDIOSRC);
|
||||
}
|
||||
|
||||
return ret;
|
||||
|
|
|
|||
|
|
@ -31,10 +31,17 @@
|
|||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
GstElement * gst_hal_render_bin_from_udi (const gchar *udi);
|
||||
typedef enum
|
||||
{
|
||||
GST_HAL_AUDIOSINK,
|
||||
GST_HAL_AUDIOSRC
|
||||
} GstHalDeviceType;
|
||||
|
||||
GstElement * gst_hal_get_audio_sink (const gchar *udi);
|
||||
GstElement * gst_hal_get_audio_src (const gchar *udi);
|
||||
GstElement *gst_hal_render_bin_from_udi (const gchar * udi,
|
||||
GstHalDeviceType type);
|
||||
|
||||
GstElement *gst_hal_get_audio_sink (const gchar * udi);
|
||||
GstElement *gst_hal_get_audio_src (const gchar * udi);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue