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gstreamer/ext/raw1394/gstdv1394src.c
Andy Wingo 7ebd7b97d4 All plugins updated for element state changes. 
Original commit message from CVS:
2005-09-02  Andy Wingo  <wingo@pobox.com>

* All plugins updated for element state changes.
2005-09-02 15:44:50 +00:00

882 lines
25 KiB
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/* -*- Mode: C; tab-width: 2; indent-tabs-mode: t; c-basic-offset: 2 -*- */
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2000> Daniel Fischer <dan@f3c.com>
* <2004> Wim Taymans <wim@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <string.h>
#include <libavc1394/avc1394.h>
#include <libavc1394/avc1394_vcr.h>
#include <libavc1394/rom1394.h>
#include "gstdv1394src.h"
GST_DEBUG_CATEGORY_STATIC (dv1394src_debug);
#define GST_CAT_DEFAULT (dv1394src_debug)
#define PAL_FRAMESIZE 144000
#define PAL_FRAMERATE 25
#define NTSC_FRAMESIZE 120000
#define NTSC_FRAMERATE 30
/* Filter signals and args */
enum
{
SIGNAL_FRAME_DROPPED,
/* FILL ME */
LAST_SIGNAL
};
#define DEFAULT_PORT -1
#define DEFAULT_CHANNEL 63
#define DEFAULT_CONSECUTIVE 1
#define DEFAULT_SKIP 0
#define DEFAULT_DROP_INCOMPLETE TRUE
#define DEFAULT_USE_AVC TRUE
#define DEFAULT_GUID 0
enum
{
ARG_0,
ARG_PORT,
ARG_CHANNEL,
ARG_CONSECUTIVE,
ARG_SKIP,
ARG_DROP_INCOMPLETE,
ARG_USE_AVC,
ARG_GUID
};
static GstElementDetails gst_dv1394src_details =
GST_ELEMENT_DETAILS ("Firewire (1394) DV Source",
"Source/Video",
"Source for DV video data from firewire port",
"Erik Walthinsen <omega@temple-baptist.com>\n"
"Daniel Fischer <dan@f3c.com>\n" "Wim Taymans <wim@fluendo.com>");
static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-dv, "
"format = (string) { NTSC, PAL }, " "systemstream = (boolean) true")
);
static void gst_dv1394src_base_init (gpointer g_class);
static void gst_dv1394src_class_init (GstDV1394SrcClass * klass);
static void gst_dv1394src_init (GstDV1394Src * filter);
static void gst_dv1394src_dispose (GObject * obj);
static void gst_dv1394src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_dv1394src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstStateChangeReturn gst_dv1394src_change_state (GstElement * element,
GstStateChange transition);
static GstFlowReturn gst_dv1394src_create (GstPushSrc * psrc, GstBuffer ** buf);
#if 0
static const GstEventMask *gst_dv1394src_get_event_mask (GstPad * pad);
#endif
static gboolean gst_dv1394src_event (GstPad * pad, GstEvent * event);
#if 0
static const GstFormat *gst_dv1394src_get_formats (GstPad * pad);
#endif
static gboolean gst_dv1394src_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value);
static const GstQueryType *gst_dv1394src_get_query_types (GstPad * pad);
static gboolean gst_dv1394src_query (GstPad * pad, GstQuery * query);
static GstElementClass *parent_class = NULL;
static void gst_dv1394src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static guint gst_dv1394src_signals[LAST_SIGNAL] = { 0 };
GType
gst_dv1394src_get_type (void)
{
static GType gst_dv1394src_type = 0;
if (!gst_dv1394src_type) {
static const GTypeInfo gst_dv1394src_info = {
sizeof (GstDV1394Src),
gst_dv1394src_base_init,
NULL,
(GClassInitFunc) gst_dv1394src_class_init,
NULL,
NULL,
sizeof (GstDV1394Src),
0,
(GInstanceInitFunc) gst_dv1394src_init,
};
static const GInterfaceInfo urihandler_info = {
gst_dv1394src_uri_handler_init,
NULL,
NULL,
};
gst_dv1394src_type =
g_type_register_static (GST_TYPE_PUSH_SRC, "DV1394Src",
&gst_dv1394src_info, 0);
g_type_add_interface_static (gst_dv1394src_type, GST_TYPE_URI_HANDLER,
&urihandler_info);
GST_DEBUG_CATEGORY_INIT (dv1394src_debug, "dv1394src", 0,
"DV firewire source");
}
return gst_dv1394src_type;
}
static void
gst_dv1394src_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&src_factory));
gst_element_class_set_details (element_class, &gst_dv1394src_details);
}
static void
gst_dv1394src_class_init (GstDV1394SrcClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSrcClass *gstbasesrc_class;
GstPushSrcClass *gstpushsrc_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesrc_class = (GstBaseSrcClass *) klass;
gstpushsrc_class = (GstPushSrcClass *) klass;
parent_class = g_type_class_ref (GST_TYPE_PUSH_SRC);
gobject_class->set_property = gst_dv1394src_set_property;
gobject_class->get_property = gst_dv1394src_get_property;
gobject_class->dispose = gst_dv1394src_dispose;
gst_dv1394src_signals[SIGNAL_FRAME_DROPPED] =
g_signal_new ("frame-dropped", G_TYPE_FROM_CLASS (klass),
G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDV1394SrcClass, frame_dropped),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_PORT,
g_param_spec_int ("port", "Port", "Port number (-1 automatic)",
-1, 16, DEFAULT_PORT, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CHANNEL,
g_param_spec_int ("channel", "Channel", "Channel number for listening",
0, 64, DEFAULT_CHANNEL, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_CONSECUTIVE,
g_param_spec_int ("consecutive", "consecutive frames",
"send n consecutive frames after skipping", 1, G_MAXINT,
DEFAULT_CONSECUTIVE, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_SKIP,
g_param_spec_int ("skip", "skip frames", "skip n frames",
0, G_MAXINT, DEFAULT_SKIP, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DROP_INCOMPLETE,
g_param_spec_boolean ("drop_incomplete", "drop_incomplete",
"drop incomplete frames", DEFAULT_DROP_INCOMPLETE,
G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_USE_AVC,
g_param_spec_boolean ("use-avc", "Use AV/C", "Use AV/C VTR control",
DEFAULT_USE_AVC, G_PARAM_READWRITE));
g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_GUID,
g_param_spec_uint64 ("guid", "GUID",
"select one of multiple DV devices by its GUID. use a hexadecimal "
"like 0xhhhhhhhhhhhhhhhh. (0 = no guid)", 0, G_MAXUINT64,
DEFAULT_GUID, G_PARAM_READWRITE));
gstelement_class->change_state = gst_dv1394src_change_state;
gstbasesrc_class->negotiate = NULL;
gstpushsrc_class->create = gst_dv1394src_create;
}
static void
gst_dv1394src_init (GstDV1394Src * dv1394src)
{
GstPad *srcpad = GST_BASE_SRC_PAD (dv1394src);
gst_base_src_set_live (GST_BASE_SRC (dv1394src), TRUE);
gst_pad_use_fixed_caps (srcpad);
gst_pad_set_event_function (srcpad, gst_dv1394src_event);
gst_pad_set_query_function (srcpad, gst_dv1394src_query);
gst_pad_set_query_type_function (srcpad, gst_dv1394src_get_query_types);
#if 0
gst_pad_set_event_mask_function (dv1394src->srcpad,
gst_dv1394src_get_event_mask);
gst_pad_set_convert_function (dv1394src->srcpad, gst_dv1394src_convert);
gst_pad_set_formats_function (dv1394src->srcpad, gst_dv1394src_get_formats);
#endif
dv1394src->dv_lock = g_mutex_new ();
dv1394src->port = DEFAULT_PORT;
dv1394src->channel = DEFAULT_CHANNEL;
dv1394src->consecutive = DEFAULT_CONSECUTIVE;
dv1394src->skip = DEFAULT_SKIP;
dv1394src->drop_incomplete = DEFAULT_DROP_INCOMPLETE;
dv1394src->use_avc = DEFAULT_USE_AVC;
dv1394src->guid = DEFAULT_GUID;
/* initialized when first header received */
dv1394src->frame_size = 0;
dv1394src->buf = NULL;
dv1394src->frame = NULL;
dv1394src->frame_sequence = 0;
}
static void
gst_dv1394src_dispose (GObject * obj)
{
GstDV1394Src *dv1394src;
dv1394src = GST_DV1394SRC (obj);
G_OBJECT_CLASS (parent_class)->dispose (obj);
}
static void
gst_dv1394src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstDV1394Src *filter = GST_DV1394SRC (object);
switch (prop_id) {
case ARG_PORT:
filter->port = g_value_get_int (value);
break;
case ARG_CHANNEL:
filter->channel = g_value_get_int (value);
break;
case ARG_SKIP:
filter->skip = g_value_get_int (value);
break;
case ARG_CONSECUTIVE:
filter->consecutive = g_value_get_int (value);
break;
case ARG_DROP_INCOMPLETE:
filter->drop_incomplete = g_value_get_boolean (value);
break;
case ARG_USE_AVC:
filter->use_avc = g_value_get_boolean (value);
break;
case ARG_GUID:
filter->guid = g_value_get_uint64 (value);
break;
default:
break;
}
}
static void
gst_dv1394src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstDV1394Src *filter = GST_DV1394SRC (object);
switch (prop_id) {
case ARG_PORT:
g_value_set_int (value, filter->port);
break;
case ARG_CHANNEL:
g_value_set_int (value, filter->channel);
break;
case ARG_SKIP:
g_value_set_int (value, filter->skip);
break;
case ARG_CONSECUTIVE:
g_value_set_int (value, filter->consecutive);
break;
case ARG_DROP_INCOMPLETE:
g_value_set_boolean (value, filter->drop_incomplete);
break;
case ARG_USE_AVC:
g_value_set_boolean (value, filter->use_avc);
break;
case ARG_GUID:
g_value_set_uint64 (value, filter->guid);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static int
gst_dv1394src_iso_receive (raw1394handle_t handle, int channel, size_t len,
quadlet_t * data)
{
GstDV1394Src *dv1394src = GST_DV1394SRC (raw1394_get_userdata (handle));
if (len > 16) {
/*
the following code taken from kino-0.51 (Dan Dennedy/Charles Yates)
Kindly relicensed under the LGPL. See the commit log for version 1.6 of
this file in CVS.
*/
unsigned char *p = (unsigned char *) &data[3];
int section_type = p[0] >> 5; /* section type is in bits 5 - 7 */
int dif_sequence = p[1] >> 4; /* dif sequence number is in bits 4 - 7 */
int dif_block = p[2];
/* if we are at the beginning of a frame,
we set buf=frame, and alloc a new buffer for frame
*/
if (section_type == 0 && dif_sequence == 0) { // dif header
if (!dv1394src->negotiated) {
GstCaps *caps;
// figure format (NTSC/PAL)
if (p[3] & 0x80) {
// PAL
dv1394src->frame_size = PAL_FRAMESIZE;
dv1394src->frame_rate = PAL_FRAMERATE;
GST_DEBUG ("PAL data");
caps = gst_caps_new_simple ("video/x-dv",
"format", G_TYPE_STRING, "PAL",
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
} else {
// NTSC (untested)
dv1394src->frame_size = NTSC_FRAMESIZE;
dv1394src->frame_rate = NTSC_FRAMERATE;
GST_DEBUG
("NTSC data [untested] - please report success/failure to <dan@f3c.com>");
caps = gst_caps_new_simple ("video/x-dv",
"format", G_TYPE_STRING, "NTSC",
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
}
gst_pad_set_caps (GST_BASE_SRC_PAD (dv1394src), caps);
gst_caps_unref (caps);
dv1394src->negotiated = TRUE;
}
// drop last frame when not complete
if (!dv1394src->drop_incomplete
|| dv1394src->bytes_in_frame == dv1394src->frame_size) {
dv1394src->buf = dv1394src->frame;
} else {
GST_INFO_OBJECT (GST_ELEMENT (dv1394src), "incomplete frame dropped");
g_signal_emit (G_OBJECT (dv1394src),
gst_dv1394src_signals[SIGNAL_FRAME_DROPPED], 0);
if (dv1394src->frame) {
gst_buffer_unref (dv1394src->frame);
}
}
dv1394src->frame = NULL;
if ((dv1394src->frame_sequence + 1) % (dv1394src->skip +
dv1394src->consecutive) < dv1394src->consecutive) {
//GstFormat format;
GstBuffer *buf;
buf = gst_buffer_new_and_alloc (dv1394src->frame_size);
#if 0
/* fill in default offset */
format = GST_FORMAT_DEFAULT;
gst_dv1394src_query (dv1394src->srcpad, GST_QUERY_POSITION, &format,
&GST_BUFFER_OFFSET (buf));
/* fill in timestamp */
format = GST_FORMAT_TIME;
gst_dv1394src_query (dv1394src->srcpad, GST_QUERY_POSITION, &format,
&GST_BUFFER_TIMESTAMP (buf));
/* fill in duration by converting one frame to time */
gst_dv1394src_convert (dv1394src->srcpad, GST_FORMAT_DEFAULT, 1,
&format, &GST_BUFFER_DURATION (buf));
#endif
dv1394src->frame = buf;
}
dv1394src->frame_sequence++;
dv1394src->bytes_in_frame = 0;
}
if (dv1394src->frame != NULL) {
guint8 *data = GST_BUFFER_DATA (dv1394src->frame);
switch (section_type) {
case 0: /* 1 Header block */
/* p[3] |= 0x80; // hack to force PAL data */
memcpy (data + dif_sequence * 150 * 80, p, 480);
break;
case 1: /* 2 Subcode blocks */
memcpy (data + dif_sequence * 150 * 80 + (1 + dif_block) * 80, p,
480);
break;
case 2: /* 3 VAUX blocks */
memcpy (data + dif_sequence * 150 * 80 + (3 + dif_block) * 80, p,
480);
break;
case 3: /* 9 Audio blocks interleaved with video */
memcpy (data + dif_sequence * 150 * 80 + (6 + dif_block * 16) * 80, p,
480);
break;
case 4: /* 135 Video blocks interleaved with audio */
memcpy (data + dif_sequence * 150 * 80 + (7 + (dif_block / 15) +
dif_block) * 80, p, 480);
break;
default: /* we can't handle any other data */
break;
}
dv1394src->bytes_in_frame += 480;
}
}
return 0;
}
static int
gst_dv1394src_bus_reset (raw1394handle_t handle, unsigned int generation)
{
GST_INFO_OBJECT (GST_DV1394SRC (raw1394_get_userdata (handle)),
"have bus reset");
return 0;
}
static GstFlowReturn
gst_dv1394src_create (GstPushSrc * psrc, GstBuffer ** buf)
{
GstDV1394Src *dv1394src = GST_DV1394SRC (psrc);
GstCaps *caps;
GST_DV_LOCK (dv1394src);
dv1394src->buf = NULL;
while (dv1394src->buf == NULL)
raw1394_loop_iterate (dv1394src->handle);
caps = gst_pad_get_caps (GST_BASE_SRC_PAD (psrc));
gst_buffer_set_caps (dv1394src->buf, caps);
gst_caps_unref (caps);
*buf = dv1394src->buf;
GST_DV_UNLOCK (dv1394src);
return GST_FLOW_OK;
}
static int
gst_dv1394src_discover_avc_node (GstDV1394Src * src)
{
int node = -1;
int i, j = 0;
int m = src->num_ports;
if (src->port >= 0) {
/* search on explicit port */
j = src->port;
m = j + 1;
}
/* loop over all our ports */
for (; j < m && node == -1; j++) {
raw1394handle_t handle;
gint n_ports;
struct raw1394_portinfo pinf[16];
/* open the port */
handle = raw1394_new_handle ();
if (!handle) {
g_warning ("raw1394 - failed to get handle: %s.\n", strerror (errno));
continue;
}
if ((n_ports = raw1394_get_port_info (handle, pinf, 16)) < 0) {
g_warning ("raw1394 - failed to get port info: %s.\n", strerror (errno));
goto next;
}
/* tell raw1394 which host adapter to use */
if (raw1394_set_port (handle, j) < 0) {
g_warning ("raw1394 - failed to set set port: %s.\n", strerror (errno));
goto next;
}
/* now loop over all the nodes */
for (i = 0; i < raw1394_get_nodecount (handle); i++) {
/* are we looking for an explicit GUID */
if (src->guid != 0) {
if (src->guid == rom1394_get_guid (handle, i)) {
node = i;
src->port = j;
break;
}
} else {
rom1394_directory rom_dir;
/* select first AV/C Tape Reccorder Player node */
if (rom1394_get_directory (handle, i, &rom_dir) < 0) {
g_warning ("error reading config rom directory for node %d\n", i);
continue;
}
if ((rom1394_get_node_type (&rom_dir) == ROM1394_NODE_TYPE_AVC) &&
avc1394_check_subunit_type (handle, i, AVC1394_SUBUNIT_TYPE_VCR)) {
node = i;
src->port = j;
break;
}
}
}
next:
raw1394_destroy_handle (handle);
}
return node;
}
static GstStateChangeReturn
gst_dv1394src_change_state (GstElement * element, GstStateChange transition)
{
GstDV1394Src *dv1394src;
GstStateChangeReturn ret;
dv1394src = GST_DV1394SRC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
/* create a handle */
if ((dv1394src->handle = raw1394_new_handle ()) == NULL)
goto no_handle;
/* set this plugin as the user data */
raw1394_set_userdata (dv1394src->handle, dv1394src);
/* get number of ports */
if ((dv1394src->num_ports =
raw1394_get_port_info (dv1394src->handle, dv1394src->pinfo,
16)) == 0)
goto no_ports;
if (dv1394src->use_avc || dv1394src->port == -1) {
/* discover AVC and optionally the port */
dv1394src->avc_node = gst_dv1394src_discover_avc_node (dv1394src);
}
/* configure our port now */
if (raw1394_set_port (dv1394src->handle, dv1394src->port) < 0)
goto cannot_set_port;
/* set the callbacks */
raw1394_set_iso_handler (dv1394src->handle, dv1394src->channel,
gst_dv1394src_iso_receive);
raw1394_set_bus_reset_handler (dv1394src->handle,
gst_dv1394src_bus_reset);
GST_DEBUG_OBJECT (dv1394src, "successfully opened up 1394 connection");
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
if (raw1394_start_iso_rcv (dv1394src->handle, dv1394src->channel) < 0)
goto cannot_start;
if (dv1394src->use_avc) {
/* start the VCR */
if (!avc1394_vcr_is_recording (dv1394src->handle, dv1394src->avc_node)
&& avc1394_vcr_is_playing (dv1394src->handle, dv1394src->avc_node)
!= AVC1394_VCR_OPERAND_PLAY_FORWARD) {
avc1394_vcr_play (dv1394src->handle, dv1394src->avc_node);
}
}
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
/* we need to lock here as the _create function has to be completed.
* The base source will not call the _create() function again. */
GST_DV_LOCK (dv1394src);
raw1394_stop_iso_rcv (dv1394src->handle, dv1394src->channel);
if (dv1394src->use_avc) {
/* pause the VCR */
if (!avc1394_vcr_is_recording (dv1394src->handle, dv1394src->avc_node)
&& (avc1394_vcr_is_playing (dv1394src->handle, dv1394src->avc_node)
!= AVC1394_VCR_OPERAND_PLAY_FORWARD_PAUSE)) {
avc1394_vcr_pause (dv1394src->handle, dv1394src->avc_node);
}
}
GST_DV_UNLOCK (dv1394src);
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
dv1394src->negotiated = FALSE;
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (dv1394src->use_avc) {
/* stop the VCR */
avc1394_vcr_stop (dv1394src->handle, dv1394src->avc_node);
}
raw1394_destroy_handle (dv1394src->handle);
break;
default:
break;
}
return ret;
no_handle:
{
GST_ELEMENT_ERROR (dv1394src, RESOURCE, NOT_FOUND, (NULL),
("can't get raw1394 handle"));
return GST_STATE_CHANGE_FAILURE;
}
no_ports:
{
GST_ELEMENT_ERROR (dv1394src, RESOURCE, NOT_FOUND, (NULL),
("no ports available for raw1394"));
return GST_STATE_CHANGE_FAILURE;
}
cannot_set_port:
{
GST_ELEMENT_ERROR (dv1394src, RESOURCE, SETTINGS, (NULL),
("can't set 1394 port %d", dv1394src->port));
return GST_STATE_CHANGE_FAILURE;
}
cannot_start:
{
GST_ELEMENT_ERROR (dv1394src, RESOURCE, READ, (NULL),
("can't start 1394 iso receive"));
return GST_STATE_CHANGE_FAILURE;
}
}
#if 0
static const GstEventMask *
gst_dv1394src_get_event_mask (GstPad * pad)
{
static const GstEventMask masks[] = {
{0,}
};
return masks;
}
#endif
static gboolean
gst_dv1394src_event (GstPad * pad, GstEvent * event)
{
return FALSE;
}
#if 0
static const GstFormat *
gst_dv1394src_get_formats (GstPad * pad)
{
static GstFormat formats[] = {
GST_FORMAT_TIME,
GST_FORMAT_BYTES,
GST_FORMAT_DEFAULT,
0
};
return formats;
}
#endif
static gboolean
gst_dv1394src_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
GstDV1394Src *src;
src = GST_DV1394SRC (gst_pad_get_parent (pad));
switch (src_format) {
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
src_value *= src->frame_size;
case GST_FORMAT_DEFAULT:
*dest_value = src_value * src->frame_rate / GST_SECOND;
break;
default:
goto not_supported;
}
break;
case GST_FORMAT_BYTES:
src_value /= src->frame_size;
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * src->frame_size;
break;
case GST_FORMAT_TIME:
if (src->frame_rate != 0)
*dest_value = src_value * GST_SECOND / src->frame_rate;
else
goto not_supported;
break;
default:
goto not_supported;
}
break;
default:
goto not_supported;
}
gst_object_unref (src);
return TRUE;
not_supported:
{
gst_object_unref (src);
return FALSE;
}
}
static const GstQueryType *
gst_dv1394src_get_query_types (GstPad * pad)
{
static const GstQueryType src_query_types[] = {
GST_QUERY_CONVERT,
GST_QUERY_POSITION,
0
};
return src_query_types;
}
static gboolean
gst_dv1394src_query (GstPad * pad, GstQuery * query)
{
gboolean res = TRUE;
GstDV1394Src *src;
src = GST_DV1394SRC (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 current;
gst_query_parse_position (query, &format, NULL, NULL);
/* bring our current frame to the requested format */
res = gst_pad_query_convert (pad,
GST_FORMAT_DEFAULT, src->frame_sequence, &format, &current);
gst_query_set_position (query, format, current, -1);
break;
}
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (!(res =
gst_dv1394src_convert (pad, src_fmt, src_val, &dest_fmt,
&dest_val)))
goto not_supported;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
}
default:
goto not_supported;
}
gst_object_unref (src);
return TRUE;
not_supported:
{
gst_object_unref (src);
return FALSE;
}
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static guint
gst_dv1394src_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
gst_dv1394src_uri_get_protocols (void)
{
static gchar *protocols[] = { "dv", NULL };
return protocols;
}
static const gchar *
gst_dv1394src_uri_get_uri (GstURIHandler * handler)
{
GstDV1394Src *gst_dv1394src = GST_DV1394SRC (handler);
return gst_dv1394src->uri;
}
static gboolean
gst_dv1394src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
gchar *protocol, *location;
gboolean ret;
ret = TRUE;
GstDV1394Src *gst_dv1394src = GST_DV1394SRC (handler);
protocol = gst_uri_get_protocol (uri);
if (strcmp (protocol, "dv") != 0) {
g_free (protocol);
return FALSE;
}
g_free (protocol);
location = gst_uri_get_location (uri);
gst_dv1394src->port = strtol (location, NULL, 10);
g_free (location);
return ret;
}
static void
gst_dv1394src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_dv1394src_uri_get_type;
iface->get_protocols = gst_dv1394src_uri_get_protocols;
iface->get_uri = gst_dv1394src_uri_get_uri;
iface->set_uri = gst_dv1394src_uri_set_uri;
}
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