diff options
author | Sebastian Dröge <slomo@circular-chaos.org> | 2007-03-01 21:50:36 +0000 |
---|---|---|
committer | Sebastian Dröge <slomo@circular-chaos.org> | 2007-03-01 21:50:36 +0000 |
commit | 8b65d9d1829c454c3a229062184f00f663486c30 (patch) | |
tree | 281d9c85c9378c7b5bfb30b1c11c54fe77075d29 /ext/hal/hal.c | |
parent | 84c6cb989a6d124debe22a9b587e0b98a153ba85 (diff) |
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.
Diffstat (limited to 'ext/hal/hal.c')
-rw-r--r-- | ext/hal/hal.c | 300 |
1 files changed, 253 insertions, 47 deletions
diff --git a/ext/hal/hal.c b/ext/hal/hal.c index 57da8425..3f68da93 100644 --- a/ext/hal/hal.c +++ b/ext/hal/hal.c @@ -1,6 +1,7 @@ /* GStreamer * Copyright (C) <2002> Thomas Vander Stichele <thomas@apestaart.org> * Copyright (C) <2006> Jürg Billeter <j@bitron.ch> + * Copyright (C) <2007> Sebastian Dröge <slomo@circular-chaos.org> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public @@ -30,12 +31,175 @@ #include <glib.h> #include "hal.h" +GST_DEBUG_CATEGORY_EXTERN (hal_debug); -/* external functions */ +#define GST_CAT_DEFAULT hal_debug + +/** + * gst_hal_get_alsa_element: + * @ctx: a #LibHalContext which should be used for querying HAL. + * @udi: a #gchar corresponding to the UDI you want to get. + * @device_type: a #GstHalDeviceType specifying the wanted device type. + * + * Get Hal UDI @udi's string value. + * + * Returns: a newly allocated #gchar string containing the appropriate pipeline + * for UDI @udi, or NULL in the case of an error.. + */ +static gchar * +gst_hal_get_alsa_element (LibHalContext * ctx, const gchar * udi, + GstHalDeviceType device_type) +{ + char *type, *element = NULL, *string = NULL; + DBusError error; + + dbus_error_init (&error); + + if (!libhal_device_query_capability (ctx, udi, "alsa", &error)) { + if (dbus_error_is_set (&error)) { + GST_DEBUG ("Failed querying %s for alsa capability: %s: %s", + udi, error.name, error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + } else { + GST_DEBUG ("UDI %s has no alsa capability", udi); + } + return NULL; + } + + type = libhal_device_get_property_string (ctx, udi, "alsa.type", &error); + + if (dbus_error_is_set (&error)) { + GST_DEBUG ("UDI %s has alsa capabilities but no alsa.type property: %s, %s", + udi, error.name, error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + return NULL; + } else if (!type) { + GST_DEBUG ("UDI %s has empty alsa.type property", udi); + return NULL; + } + + if (strcmp (type, "playback") == 0 && device_type == GST_HAL_AUDIOSINK) + element = "alsasink"; + else if (strcmp (type, "capture") == 0 && device_type == GST_HAL_AUDIOSRC) + element = "alsasrc"; + + libhal_free_string (type); + + if (element) { + int card, device; + + card = libhal_device_get_property_int (ctx, udi, "alsa.card", &error); + if (dbus_error_is_set (&error)) { + GST_DEBUG ("UDI %s has no alsa.card property: %s: %s", udi, error.name, + error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + return NULL; + } else if (card == -1) { + GST_DEBUG ("UDI %s has no alsa.card property", udi); + return NULL; + } + + device = libhal_device_get_property_int (ctx, udi, "alsa.device", &error); + if (dbus_error_is_set (&error)) { + GST_DEBUG ("UDI %s has no alsa.device property: %s: %s", udi, error.name, + error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + return NULL; + } else if (device == -1) { + GST_DEBUG ("UDI %s has no alsa.device property", udi); + return NULL; + } + + if (device == 0) { + /* handle default device specially to use + * dmix, dsnoop, and softvol if appropriate */ + string = g_strdup_printf ("%s device=default:%d", element, card); + } else { + string = + g_strdup_printf ("%s device=plughw:%d,%d", element, card, device); + } + } + + return string; +} + +/** + * gst_hal_get_oss_element: + * @ctx: a #LibHalContext which should be used for querying HAL. + * @udi: a #gchar corresponding to the UDI you want to get. + * @device_type: a #GstHalDeviceType specifying the wanted device type. + * + * Get Hal UDI @udi's string value. + * + * Returns: a newly allocated #gchar string containing the appropriate pipeline + * for UDI @udi, or NULL in the case of an error.. + */ +static gchar * +gst_hal_get_oss_element (LibHalContext * ctx, const gchar * udi, + GstHalDeviceType device_type) +{ + char *type, *element = NULL, *string = NULL; + DBusError error; + + dbus_error_init (&error); + + if (!libhal_device_query_capability (ctx, udi, "oss", &error)) { + if (dbus_error_is_set (&error)) { + GST_DEBUG ("Failed querying %s for oss capability: %s: %s", udi, + error.name, error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + } else { + GST_DEBUG ("UDI %s has no oss capability", udi); + } + return NULL; + } + + type = libhal_device_get_property_string (ctx, udi, "oss.type", &error); + if (dbus_error_is_set (&error)) { + GST_DEBUG ("UDI %s has oss capabilities but no oss.type property: %s, %s", + udi, error.name, error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + return NULL; + } else if (!type) { + GST_DEBUG ("UDI %s has empty oss.type property", udi); + return NULL; + } + + if (strcmp (type, "pcm") == 0) { + if (device_type == GST_HAL_AUDIOSINK) + element = "osssink"; + else if (device_type == GST_HAL_AUDIOSRC) + element = "osssrc"; + } + libhal_free_string (type); + + if (element) { + char *device = NULL; + + device = + libhal_device_get_property_string (ctx, udi, "oss.device_file", &error); + if (dbus_error_is_set (&error)) { + GST_DEBUG + ("UDI %s has oss capabilities but no oss.device_file property: %s, %s", + udi, error.name, error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + return NULL; + } else if (!device) { + GST_DEBUG ("UDI %s has empty oss.device_file property", udi); + return NULL; + } + + string = g_strdup_printf ("%s device=%s", element, device); + libhal_free_string (device); + } + + return string; +} /** * gst_hal_get_string: - * @key: a #gchar corresponding to the key you want to get. + * @udi: a #gchar corresponding to the UDI you want to get. + * @device_type: a #GstHalDeviceType specifying the wanted device type. * * Get Hal UDI @udi's string value. * @@ -43,12 +207,11 @@ * for UDI @udi, or NULL in the case of an error.. */ static gchar * -gst_hal_get_string (const gchar * udi) +gst_hal_get_string (const gchar * udi, GstHalDeviceType device_type) { - DBusConnection *connection; DBusError error; LibHalContext *ctx; - char *string; + char *string = NULL; /* Don't query HAL for NULL UDIs. Passing NULL as UDI to HAL gives * an assertion failure in D-Bus when running with @@ -58,69 +221,104 @@ gst_hal_get_string (const gchar * udi) dbus_error_init (&error); - connection = dbus_bus_get (DBUS_BUS_SYSTEM, &error); - g_return_val_if_fail (connection != NULL, NULL); - ctx = libhal_ctx_new (); + /* Should only happen on OOM */ g_return_val_if_fail (ctx != NULL, NULL); - libhal_ctx_set_dbus_connection (ctx, connection); - libhal_ctx_init (ctx, &error); + if (!libhal_ctx_set_dbus_connection (ctx, dbus_bus_get (DBUS_BUS_SYSTEM, + &error))) { + GST_DEBUG ("Unable to set DBus connection: %s: %s", error.name, + error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + goto ctx_free; + } - string = NULL; + if (!libhal_ctx_init (ctx, &error)) { + GST_DEBUG ("Unable to set init HAL context: %s: %s", error.name, + error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + goto ctx_free; + } - if (libhal_device_query_capability (ctx, udi, "alsa", &error)) { - char *type, *element = NULL; + /* Now first check if UDI is an alsa device, then oss and then + * check the childs of the given device. If there are alsa and oss + * children the first alsa one is used. */ - type = libhal_device_get_property_string (ctx, udi, "alsa.type", &error); - if (type != NULL && strcmp (type, "playback") == 0) { - element = "alsasink"; - } else if (type != NULL && strcmp (type, "capture") == 0) { - element = "alsasrc"; + string = gst_hal_get_alsa_element (ctx, udi, device_type); + + if (!string) + string = gst_hal_get_oss_element (ctx, udi, device_type); + + if (!string) { + int num_childs; + char **childs = NULL; + + /* now try if one of the direct subdevices supports ALSA or OSS */ + childs = + libhal_manager_find_device_string_match (ctx, "info.parent", udi, + &num_childs, &error); + if (dbus_error_is_set (&error)) { + GST_DEBUG ("Unable to retrieve childs of %s: %s: %s", udi, error.name, + error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + goto ctx_shutdown; } - if (element) { - int card, device; - - card = libhal_device_get_property_int (ctx, udi, "alsa.card", &error); - device = libhal_device_get_property_int (ctx, udi, "alsa.device", &error); - if (device == 0) { - /* handle default device specially to use - * dmix, dsnoop, and softvol if appropriate */ - string = g_strdup_printf ("%s device=default:%d", element, card); - } else { - string = - g_strdup_printf ("%s device=plughw:%d,%d", element, card, device); + + if (childs && num_childs > 0) { + int i; + char *alsa_string = NULL, *oss_string = NULL; + + for (i = 0; i < num_childs && !alsa_string; i++) { + alsa_string = gst_hal_get_alsa_element (ctx, childs[i], device_type); + + if (!oss_string) + oss_string = gst_hal_get_oss_element (ctx, childs[i], device_type); + } + + if (alsa_string) { + string = alsa_string; + g_free (oss_string); + } else if (oss_string) { + string = oss_string; } } + libhal_free_string_array (childs); } - libhal_ctx_shutdown (ctx, &error); - libhal_ctx_free (ctx); +ctx_shutdown: + if (!libhal_ctx_shutdown (ctx, &error)) { + GST_DEBUG ("Closing connection to HAL failed: %s: %s", error.name, + error.message); + LIBHAL_FREE_DBUS_ERROR (&error); + } - dbus_error_free (&error); +ctx_free: + libhal_ctx_free (ctx); if (string == NULL) { - GST_WARNING ("Problem parsing HAL ALSA capabilities for udi %s", udi); + GST_WARNING ("Problem finding a HAL audio device for udi %s", udi); } return string; } +/* external functions */ + /** * gst_hal_render_bin_from_udi: - * @key: a #gchar string corresponding to a Hal UDI. + * @udi: a #gchar string corresponding to a Hal UDI. * * Render bin from Hal UDI @udi. * * Returns: a #GstElement containing the rendered bin. */ GstElement * -gst_hal_render_bin_from_udi (const gchar * udi) +gst_hal_render_bin_from_udi (const gchar * udi, GstHalDeviceType type) { 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; |