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Clementine-audio-player-Mac.../gstafcsrc/gstafcsrc.c

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/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "gstafcsrc.h"
#include <stdlib.h>
#include <string.h>
#include <gst/gst.h>
// Signals
enum {
LAST_SIGNAL
};
// Properties
enum {
PROP_0,
PROP_LOCATION,
};
GST_DEBUG_CATEGORY_STATIC(gst_afc_src_debug);
#define GST_CAT_DEFAULT gst_afc_src_debug
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("ANY")
);
static void gst_afc_src_interface_init(GType type);
static void gst_afc_src_uri_handler_init(gpointer iface, gpointer data);
static void gst_afc_src_set_property(GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_afc_src_get_property(GObject * object, guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_afc_src_finalize(GObject* object);
static gboolean gst_afc_src_start(GstBaseSrc* src);
static gboolean gst_afc_src_stop(GstBaseSrc* src);
static GstFlowReturn gst_afc_src_create(GstBaseSrc* src, guint64 offset, guint length, GstBuffer** buffer);
static gboolean gst_afc_src_is_seekable(GstBaseSrc* src);
static gboolean gst_afc_src_get_size(GstBaseSrc* src, guint64* size);
GST_BOILERPLATE_FULL(GstAfcSrc, gst_afc_src, GstBaseSrc, GST_TYPE_BASE_SRC, gst_afc_src_interface_init);
static void gst_afc_src_interface_init(GType type) {
static const GInterfaceInfo urihandler_info = {
gst_afc_src_uri_handler_init,
NULL,
NULL
};
GST_DEBUG_CATEGORY_INIT (gst_afc_src_debug, "afcsrc", 0, "iPod/iPhone Source");
g_type_add_interface_static(type, GST_TYPE_URI_HANDLER, &urihandler_info);
}
static void gst_afc_src_base_init(gpointer gclass) {
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_set_details_simple(element_class,
"iPod/iPhone Source",
"Source/Afc",
"Read using libimobiledevice",
"David Sansome <me@davidsansome.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
}
static void gst_afc_src_class_init (GstAfcSrcClass* klass) {
GObjectClass* gobject_class = (GObjectClass*) klass;
GstBaseSrcClass* gstbasesrc_class = (GstBaseSrcClass*) klass;
gobject_class->set_property = gst_afc_src_set_property;
gobject_class->get_property = gst_afc_src_get_property;
gobject_class->finalize = gst_afc_src_finalize;
g_object_class_install_property(gobject_class, PROP_LOCATION,
g_param_spec_string(
"location", "URI",
"The URI of the file to read, must be of the form afc://uuid/filename", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | GST_PARAM_MUTABLE_READY));
gstbasesrc_class->start = gst_afc_src_start;
gstbasesrc_class->stop = gst_afc_src_stop;
gstbasesrc_class->create = gst_afc_src_create;
gstbasesrc_class->is_seekable = gst_afc_src_is_seekable;
gstbasesrc_class->get_size = gst_afc_src_get_size;
}
static GstURIType gst_afc_src_uri_get_type() {
return GST_URI_SRC;
}
static gchar** gst_afc_src_uri_get_protocols() {
static const gchar* protocols[] = { "afc", NULL };
return (char**) protocols;
}
static const gchar* gst_afc_src_uri_get_uri(GstURIHandler* handler) {
GstAfcSrc* self = GST_AFCSRC(handler);
return self->location_;
}
static gboolean gst_afc_src_uri_set_uri(GstURIHandler* handler, const gchar* uri) {
GstAfcSrc* self = GST_AFCSRC(handler);
self->location_ = g_strdup(uri);
return TRUE;
}
static void gst_afc_src_uri_handler_init(gpointer g_iface, gpointer data) {
GstURIHandlerInterface* iface = (GstURIHandlerInterface*) g_iface;
iface->get_type = gst_afc_src_uri_get_type;
iface->get_protocols = gst_afc_src_uri_get_protocols;
iface->set_uri = gst_afc_src_uri_set_uri;
iface->get_uri = gst_afc_src_uri_get_uri;
}
static void gst_afc_src_init(GstAfcSrc* element, GstAfcSrcClass* gclass) {
element->location_ = NULL;
element->uuid_ = NULL;
element->path_ = NULL;
element->connected_ = FALSE;
element->afc_ = NULL;
element->afc_port_ = 0;
element->device_ = NULL;
element->file_handle_ = 0;
element->buffer_ = NULL;
element->buffer_is_valid_ = FALSE;
element->buffer_length_ = 0;
element->buffer_offset_ = 0;
}
static void gst_afc_src_finalize(GObject* object) {
GstAfcSrc* self = GST_AFCSRC(object);
free(self->location_);
free(self->uuid_);
free(self->path_);
free(self->buffer_);
if (self->file_handle_)
afc_file_close(self->afc_, self->file_handle_);
if (self->afc_)
afc_client_free(self->afc_);
if (self->device_)
idevice_free(self->device_);
G_OBJECT_CLASS(parent_class)->finalize(object);
}
static void gst_afc_src_set_property(
GObject* object, guint prop_id, const GValue* value, GParamSpec* pspec) {
GstAfcSrc* self = GST_AFCSRC(object);
switch (prop_id) {
case PROP_LOCATION:
self->location_ = g_strdup(g_value_get_string(value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void gst_afc_src_get_property(
GObject* object, guint prop_id, GValue* value, GParamSpec* pspec) {
GstAfcSrc* self = GST_AFCSRC(object);
switch (prop_id) {
case PROP_LOCATION:
g_value_set_string(value, self->location_);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean gst_afc_src_start(GstBaseSrc* src) {
GstAfcSrc* self = GST_AFCSRC(src);
// Don't connect again
if (self->connected_)
return TRUE;
// Check that a URI has been passed
if (!self->location_ || self->location_[0] == '\0') {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("No URI specified"), (NULL));
return FALSE;
}
// Parse the URI
// HERE BE DRAGONS
gchar* location = gst_uri_get_location(self->location_);
char* path_pos = strstr(location, "/");
self->uuid_ = (char*) malloc(path_pos - location + 1);
memcpy(self->uuid_, location, path_pos - location);
self->uuid_[path_pos - location] = '\0';
self->path_ = g_strdup(path_pos);
g_free(location);
// Open the device
idevice_error_t err = idevice_new(&self->device_, self->uuid_);
if (err != IDEVICE_E_SUCCESS) {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("idevice error: %d", err), (NULL));
return FALSE;
}
lockdownd_client_t lockdown;
lockdownd_error_t lockdown_err =
lockdownd_client_new_with_handshake(self->device_, &lockdown, "GstAfcSrc");
if (lockdown_err != LOCKDOWN_E_SUCCESS) {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("lockdown error: %d", lockdown_err), (NULL));
return FALSE;
}
lockdown_err = lockdownd_start_service(lockdown, "com.apple.afc", &self->afc_port_);
if (lockdown_err != LOCKDOWN_E_SUCCESS) {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("lockdown error: %d", lockdown_err), (NULL));
lockdownd_client_free(lockdown);
return FALSE;
}
afc_error_t afc_err = afc_client_new(self->device_, self->afc_port_, &self->afc_);
if (afc_err != 0) {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("afc error: %d", afc_err), (NULL));
lockdownd_client_free(lockdown);
return FALSE;
}
lockdownd_client_free(lockdown);
// Try opening the file
afc_err = afc_file_open(self->afc_, self->path_, AFC_FOPEN_RDONLY, &self->file_handle_);
if (afc_err != 0) {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("afc error: %d", afc_err), (NULL));
return FALSE;
}
self->connected_ = TRUE;
return TRUE;
}
static gboolean gst_afc_src_stop(GstBaseSrc* src) {
return TRUE;
}
static GstFlowReturn gst_afc_src_create(GstBaseSrc* src, guint64 offset, guint length, GstBuffer** buffer) {
GstAfcSrc* self = GST_AFCSRC(src);
GstBuffer* buf = gst_buffer_try_new_and_alloc(length);
if (buf == NULL && length > 0) {
GST_ERROR_OBJECT(src, "Failed to allocate %u bytes", length);
return GST_FLOW_ERROR;
}
// Is this section within our cache?
if (!self->buffer_is_valid_ || offset < self->buffer_offset_ ||
offset + length > self->buffer_offset_ + self->buffer_length_) {
// No - read from the device to fill our internal cache.
// Always read twice the requested size so the next read(s) hit the cache too.
if (self->buffer_length_ != length * 2) {
self->buffer_ = (char*)realloc(self->buffer_, length * 2);
self->buffer_is_valid_ = TRUE;
self->buffer_length_ = length * 2;
}
self->buffer_offset_ = offset;
uint32_t bytes_read = 0;
afc_error_t err;
err = afc_file_seek(self->afc_, self->file_handle_, offset, SEEK_SET);
if (err == AFC_E_SUCCESS) {
err = afc_file_read(self->afc_, self->file_handle_, self->buffer_, length * 2, &bytes_read);
}
if (err != AFC_E_SUCCESS) {
gst_buffer_unref(buf);
return GST_FLOW_ERROR;
}
}
// Copy from our internal buffer to the output buffer
memcpy(GST_BUFFER_DATA(buf), self->buffer_ + offset - self->buffer_offset_, length);
*buffer = buf;
return GST_FLOW_OK;
}
static gboolean gst_afc_src_is_seekable(GstBaseSrc* src) {
return TRUE;
}
static gboolean gst_afc_src_get_size(GstBaseSrc* src, guint64* size) {
GstAfcSrc* self = GST_AFCSRC(src);
char** infolist = NULL;
afc_error_t err = afc_get_file_info(self->afc_, self->path_, &infolist);
if (err != AFC_E_SUCCESS || !infolist) {
GST_ELEMENT_ERROR(src, RESOURCE, NOT_FOUND, ("afc error: %d", err), (NULL));
return FALSE;
}
gboolean found_size = FALSE;
char** p = infolist;
while (*p != NULL) {
if (g_strcmp0(*p, "st_size") == 0) {
*size = strtoll(*(p+1), NULL, 0);
found_size = TRUE;
}
free(*p); ++p;
free(*p); ++p;
}
free(infolist);
if (!found_size) {
*size = 0;
return FALSE;
}
return TRUE;
}
#define PACKAGE "Clementine"
static gboolean afcsrc_init(GstPlugin* afcsrc) {
return gst_element_register(afcsrc, "afcsrc", GST_RANK_PRIMARY, GST_TYPE_AFCSRC);
}
void afcsrc_register_static() {
gst_plugin_register_static(
GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"afcsrc",
"iPod/iPhone Source",
afcsrc_init,
"0.1",
"GPL",
"Clementine",
"Clementine",
"http://www.clementine-player.org/");
}
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