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Add ahcsrc Camera source element prototype

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This commit is contained in:
Youness Alaoui 2012-10-17 19:42:59 -04:00 committed by Nicolas Dufresne
parent 4b975b204c
commit 484b0ae658
4 changed files with 499 additions and 5 deletions
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6
sys/androidcamera/Makefile.am
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@ -23,7 +23,8 @@ libgstandroidmedia_la_SOURCES = \
gst-dvm.c \
gst-android-hardware-camera.c \
gst-android-graphics-surfacetexture.c \
gst-android-graphics-imageformat.c
gst-android-graphics-imageformat.c \
gstahcsrc.c
noinst_HEADERS = \
gstamc.h \
@ -37,7 +38,8 @@ noinst_HEADERS = \
gst-dvm.h \
gst-android-hardware-camera.h \
gst-android-graphics-surfacetexture.h \
gst-android-graphics-imageformat.h
gst-android-graphics-imageformat.h \
gstahcsrc.h
if !HAVE_GST_0_10_37
libgstandroidmedia_la_SOURCES += $(VIDEO_BASE_CLASSES_C)

19
sys/androidcamera/gst-androidmedia.c
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@ -22,14 +22,27 @@
#include "config.h"
#endif
#include "gstamc.h"
#include <gst/gst.h>
#include "gstamc.h"
#include "gst-dvm.h"
#include "gst-android-hardware-camera.h"
#include "gstahcsrc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
return gst_amc_init (plugin);
if (!gst_amc_init (plugin))
return FALSE;
if (!gst_dvm_init ())
return FALSE;
if (!gst_android_hardware_camera_init ())
return FALSE;
return gst_element_register (plugin, "ahcsrc", GST_RANK_NONE,
GST_TYPE_AHC_SRC);
}
#ifdef GST_PLUGIN_DEFINE2

412
sys/androidcamera/gstahcsrc.c Normal file
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@ -0,0 +1,412 @@
/* GStreamer android.hardware.Camera Source
*
* Copyright (C) 2012, Cisco Systems, Inc.
* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* 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/video/video.h>
#include "gstahcsrc.h"
#include "gst-dvm.h"
static void gst_ahc_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ahc_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_ahc_src_dispose (GObject * object);
static GstStateChangeReturn gst_ahc_src_change_state (GstElement * element,
GstStateChange transition);
static GstCaps *gst_ahc_src_getcaps (GstBaseSrc * src);
static gboolean gst_ahc_src_start (GstBaseSrc * bsrc);
static gboolean gst_ahc_src_stop (GstBaseSrc * bsrc);
static gboolean gst_ahc_src_unlock (GstBaseSrc * bsrc);
static gboolean gst_ahc_src_unlock_stop (GstBaseSrc * bsrc);
static GstFlowReturn gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer);
#define GST_AHC_SRC_CAPS_STR \
GST_VIDEO_CAPS_YUV (" { YV12 , YUY2 , NV21 , NV16 }") ";" \
GST_VIDEO_CAPS_RGB_16
static GstStaticPadTemplate gst_ahc_src_pad_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_AHC_SRC_CAPS_STR));
GST_DEBUG_CATEGORY_STATIC (gst_ahc_src_debug);
#define GST_CAT_DEFAULT gst_ahc_src_debug
enum
{
ARG_0,
};
GST_BOILERPLATE (GstAHCSrc, gst_ahc_src, GstPushSrc, GST_TYPE_PUSH_SRC);
static void
gst_ahc_src_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
GST_DEBUG_CATEGORY_INIT (gst_ahc_src_debug, "ahcsrc", 0,
"android.hardware.Camera source element");
gst_element_class_add_static_pad_template (gstelement_class,
&gst_ahc_src_pad_template);
gst_element_class_set_details_simple (gstelement_class,
"Android Camera Source",
"Source/Video",
"Reads frames from android.hardware.Camera class into buffers",
"Youness Alaoui <youness.alaoui@collabora.co.uk>");
}
static void
gst_ahc_src_class_init (GstAHCSrcClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
gobject_class->set_property = gst_ahc_src_set_property;
gobject_class->get_property = gst_ahc_src_get_property;
gobject_class->dispose = gst_ahc_src_dispose;
element_class->change_state = gst_ahc_src_change_state;
gstbasesrc_class->get_caps = gst_ahc_src_getcaps;
gstbasesrc_class->start = gst_ahc_src_start;
gstbasesrc_class->stop = gst_ahc_src_stop;
gstbasesrc_class->unlock = gst_ahc_src_unlock;
gstbasesrc_class->unlock_stop = gst_ahc_src_unlock_stop;
gstpushsrc_class->create = gst_ahc_src_create;
}
static void
gst_ahc_src_init (GstAHCSrc * self, GstAHCSrcClass * klass)
{
gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
gst_base_src_set_format (GST_BASE_SRC (self), GST_FORMAT_TIME);
gst_base_src_set_do_timestamp (GST_BASE_SRC (self), TRUE);
self->camera = NULL;
self->texture = gst_ag_surfacetexture_new (0);
self->data = NULL;
self->queue = g_async_queue_new ();
self->caps = NULL;
self->flushing = FALSE;
}
static void
gst_ahc_src_dispose (GObject * object)
{
GstAHCSrc *self = GST_AHC_SRC (object);
if (self->camera)
gst_ah_camera_release (self->camera);
self->camera = NULL;
if (self->texture)
gst_ag_surfacetexture_release (self->texture);
self->texture = NULL;
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstCaps *
gst_ahc_src_getcaps (GstBaseSrc * src)
{
GstAHCSrc *self = GST_AHC_SRC (src);
return gst_caps_copy (self->caps);
}
static void
gst_ahc_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstAHCSrc *self = GST_AHC_SRC (object);
(void) self;
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ahc_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstAHCSrc *self = GST_AHC_SRC (object);
(void) self;
switch (prop_id) {
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ahc_src_on_preview_frame (jbyteArray data, gpointer user_data)
{
GstAHCSrc *self = GST_AHC_SRC (user_data);
JNIEnv *env = gst_dvm_get_env ();
//GST_WARNING_OBJECT (self, "Received data buffer %p", data);
g_async_queue_push (self->queue, (*env)->NewGlobalRef (env, data));
}
static void
gst_ahc_src_on_error (int error, gpointer user_data)
{
GstAHCSrc *self = GST_AHC_SRC (user_data);
GST_WARNING_OBJECT (self, "Received error code : %d", error);
}
static gboolean
gst_ahc_src_open (GstAHCSrc * self)
{
GST_WARNING_OBJECT (self, "Openning camera");
self->camera = gst_ah_camera_open (0);
if (self->camera) {
GstAHCParameters *params;
JNIEnv *env = gst_dvm_get_env ();
params = gst_ah_camera_get_parameters (self->camera);
GST_WARNING_OBJECT (self, "Opened camera");
if (params) {
GstAHCSize *size;
GST_WARNING_OBJECT (self, "Params : %s",
gst_ahc_parameters_flatten (params));
gst_ahc_parameters_set_preview_size (params, 640, 480);
gst_ahc_parameters_set_preview_format (params, ImageFormat_NV21);
GST_WARNING_OBJECT (self, "Setting new params (%d) : %s",
gst_ah_camera_set_parameters (self->camera, params),
gst_ahc_parameters_flatten (params));
size = gst_ahc_parameters_get_preview_size (params);
self->caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, GST_MAKE_FOURCC ('N', 'V', '2', '1'),
"width", G_TYPE_INT, size->width,
"height", G_TYPE_INT, size->height,
"framerate", GST_TYPE_FRACTION, 30, 1, NULL);
self->buffer_size = size->width * size->height *
gst_ag_imageformat_get_bits_per_pixel
(gst_ahc_parameters_get_preview_format (params)) / 8;
gst_ahc_size_free (size);
gst_ah_camera_set_preview_texture (self->camera, self->texture);
gst_ah_camera_set_error_callback (self->camera, gst_ahc_src_on_error,
self);
gst_ah_camera_set_preview_callback_with_buffer (self->camera,
gst_ahc_src_on_preview_frame, self);
gst_ah_camera_add_callback_buffer (self->camera,
(*env)->NewByteArray (env, self->buffer_size));
gst_ah_camera_add_callback_buffer (self->camera,
(*env)->NewByteArray (env, self->buffer_size));
gst_ah_camera_add_callback_buffer (self->camera,
(*env)->NewByteArray (env, self->buffer_size));
{
GList *list, *i;
list = gst_ahc_parameters_get_supported_preview_formats (params);
GST_WARNING_OBJECT (self, "Supported preview formats:");
for (i = list; i; i = i->next) {
int f = GPOINTER_TO_INT (i->data);
GST_WARNING_OBJECT (self, " %d", f);
}
gst_ahc_parameters_supported_preview_formats_free (list);
list = gst_ahc_parameters_get_supported_preview_sizes (params);
GST_WARNING_OBJECT (self, "Supported preview sizes:");
for (i = list; i; i = i->next) {
GstAHCSize *s = i->data;
GST_WARNING_OBJECT (self, " %dx%d", s->width, s->height);
}
gst_ahc_parameters_supported_preview_sizes_free (list);
list = gst_ahc_parameters_get_supported_preview_fps_range (params);
GST_WARNING_OBJECT (self, "Supported preview fps range:");
for (i = list; i; i = i->next) {
int *range = i->data;
GST_WARNING_OBJECT (self, " [%d, %d]", range[0], range[1]);
}
gst_ahc_parameters_supported_preview_fps_range_free (list);
}
gst_ahc_parameters_free (params);
}
} else {
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("Unable to open device '%d'.", 0), GST_ERROR_SYSTEM);
}
return (self->camera != NULL);
}
static GstStateChangeReturn
gst_ahc_src_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstAHCSrc *self = GST_AHC_SRC (element);
GST_WARNING_OBJECT (self, "Changing state %d", transition);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
{
gint num_cams = gst_ah_camera_get_number_of_cameras ();
gint i;
GST_WARNING_OBJECT (self, "Found %d cameras on the system", num_cams);
for (i = 0; i <= num_cams; i++) {
GstAHCCameraInfo info;
if (gst_ah_camera_get_camera_info (i, &info)) {
GST_WARNING_OBJECT (self, "Camera info for %d", i);
GST_WARNING_OBJECT (self, " Facing: %s (%d)",
info.facing == CameraInfo_CAMERA_FACING_BACK ? "Back" : "Front",
info.facing);
GST_WARNING_OBJECT (self, " Orientation: %d degrees",
info.orientation);
} else {
GST_WARNING_OBJECT (self, "Error getting camera info for %d", i);
}
}
if (num_cams > 0) {
if (!gst_ahc_src_open (self))
return GST_STATE_CHANGE_FAILURE;
} else {
GST_ELEMENT_ERROR (self, RESOURCE, NOT_FOUND,
("There are no cameras available on this device."),
GST_ERROR_SYSTEM);
return GST_STATE_CHANGE_FAILURE;
}
}
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
if (self->camera)
gst_ah_camera_release (self->camera);
self->camera = NULL;
break;
default:
break;
}
return ret;
}
static gboolean
gst_ahc_src_start (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_WARNING_OBJECT (self, "Starting preview");
if (self->camera) {
gboolean ret = gst_ah_camera_start_preview (self->camera);
if (ret)
gst_ah_camera_set_preview_callback_with_buffer (self->camera,
gst_ahc_src_on_preview_frame, self);
return ret;
} else {
return FALSE;
}
}
static gboolean
gst_ahc_src_stop (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_WARNING_OBJECT (self, "Stopping preview");
if (self->camera)
return gst_ah_camera_stop_preview (self->camera);
else
return TRUE;
}
static gboolean
gst_ahc_src_unlock (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_WARNING_OBJECT (self, "Unlocking create");
self->flushing = TRUE;
return TRUE;
}
static gboolean
gst_ahc_src_unlock_stop (GstBaseSrc * bsrc)
{
GstAHCSrc *self = GST_AHC_SRC (bsrc);
GST_WARNING_OBJECT (self, "Stopping unlock");
self->flushing = FALSE;
return TRUE;
}
static GstFlowReturn
gst_ahc_src_create (GstPushSrc * src, GstBuffer ** buffer)
{
GstAHCSrc *self = GST_AHC_SRC (src);
JNIEnv *env = gst_dvm_get_env ();
jbyteArray data = NULL;
while (data == NULL) {
data = g_async_queue_timeout_pop (self->queue, 100000);
if (data == NULL && self->flushing)
return GST_FLOW_WRONG_STATE;
}
*buffer = gst_buffer_new_and_alloc (self->buffer_size);
(*env)->GetByteArrayRegion (env, data, 0, self->buffer_size,
(jbyte *) GST_BUFFER_DATA (*buffer));
gst_buffer_set_caps (*buffer, self->caps);
gst_ah_camera_add_callback_buffer (self->camera, data);
(*env)->DeleteGlobalRef (env, data);
return GST_FLOW_OK;
}

67
sys/androidcamera/gstahcsrc.h Normal file
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@ -0,0 +1,67 @@
/* GStreamer android.hardware.Camera Source
*
* Copyright (C) 2012, Cisco Systems, Inc.
* Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* 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.
*/
#ifndef __GST_AHC_SRC_H__
#define __GST_AHC_SRC_H__
#include <gst/gst.h>
#include <gst/base/gstpushsrc.h>
#include "gst-android-hardware-camera.h"
G_BEGIN_DECLS
#define GST_TYPE_AHC_SRC \
(gst_ahc_src_get_type())
#define GST_AHC_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_AHC_SRC, GstAHCSrc))
#define GST_AHC_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_AHC_SRC, GstAHCSrcClass))
#define GST_IS_AHC_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_AHC_SRC))
#define GST_IS_AHC_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_AHC_SRC))
typedef struct _GstAHCSrc GstAHCSrc;
typedef struct _GstAHCSrcClass GstAHCSrcClass;
struct _GstAHCSrc
{
GstPushSrc parent;
GstAHCamera *camera;
GstAGSurfaceTexture *texture;
GstCaps *caps;
GList *data;
GAsyncQueue *queue;
gint buffer_size;
gboolean flushing;
};
struct _GstAHCSrcClass
{
GstPushSrcClass parent_class;
};
GType gst_ahc_src_get_type (void);
G_END_DECLS
#endif /* __GST_AHC_SRC_H__ */