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Original commit message from CVS: 2007-05-30 Andy Wingo <wingo@pobox.com> * sys/v4l2/v4l2src_calls.h: * sys/v4l2/v4l2src_calls.c (gst_v4l2src_fill_format_list): Store the format list in the order that the driver gives it to us. (gst_v4l2src_probe_caps_for_format_and_size) (gst_v4l2src_probe_caps_for_format): New functions, fill GstCaps based on the capabilities of the device. (gst_v4l2src_grab_frame): Update for object variable renaming. (gst_v4l2src_set_capture): Update to be strict in its parameters, as in the set_caps below. (gst_v4l2src_capture_init): Update for object variable renaming, and reflow. (gst_v4l2src_capture_start, gst_v4l2src_capture_stop) (gst_v4l2src_capture_deinit): Update for object variable renaming. (gst_v4l2src_update_fps, gst_v4l2src_set_fps) (gst_v4l2src_get_fps): Remove; these functions don't have much meaning outside of an atomic set_caps method. (gst_v4l2src_buffer_new): Don't set buffer duration, it is not known. * sys/v4l2/gstv4l2tuner.c (gst_v4l2_tuner_set_channel): Remove call to update_fps; not sure about this change. (gst_v4l2_tuner_set_norm): Work around the fact that for the moment we don't have an update_fps_func. * sys/v4l2/gstv4l2src.h (struct _GstV4l2Src): Don't put v4l2 structures in the object, just store what we need. Do store the probed caps of the device. Don't store the current frame rate. * sys/v4l2/gstv4l2src.c (gst_v4l2src_init): Remove the update_fps_function, for now. Update for new object variable naming. (gst_v4l2src_set_property, gst_v4l2src_get_property): Update for new object variable naming. (gst_v4l2src_v4l2fourcc_to_structure): Rename from ..._to_caps. (gst_v4l2_structure_to_v4l2fourcc): Rename from ...caps_to_.... (gst_v4l2src_get_caps): Rework to probe the device for supported frame sizes and frame rates. (gst_v4l2src_set_caps): Rework to be strict in the given parameters: if someone asks us to have a certain size and rate, that is what we configure. (gst_v4l2src_get_read): Update for object variable naming. Don't leak buffers on short reads. (gst_v4l2src_get_mmap): Update for object variable naming, and add comments. (gst_v4l2src_create): Update for object variable naming.
118 lines
2.9 KiB
C
118 lines
2.9 KiB
C
/* GStreamer
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*
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* 2006 Edgard Lima <edgard.lima@indt.org.br>
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*
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* gstv4l2src.h: BT8x8/V4L2 source element
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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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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_V4L2SRC_H__
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#define __GST_V4L2SRC_H__
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#include <gstv4l2object.h>
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GST_DEBUG_CATEGORY_EXTERN (v4l2src_debug);
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#define GST_V4L2_MAX_BUFFERS 16
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#define GST_V4L2_MIN_BUFFERS 2
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#define GST_V4L2_MAX_SIZE (1<<15) /* 2^15 == 32768 */
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2SRC \
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(gst_v4l2src_get_type())
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#define GST_V4L2SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4L2SRC,GstV4l2Src))
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#define GST_V4L2SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4L2SRC,GstV4l2SrcClass))
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#define GST_IS_V4L2SRC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4L2SRC))
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#define GST_IS_V4L2SRC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4L2SRC))
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typedef struct _GstV4l2BufferPool GstV4l2BufferPool;
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typedef struct _GstV4l2Buffer GstV4l2Buffer;
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typedef struct _GstV4l2Src GstV4l2Src;
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typedef struct _GstV4l2SrcClass GstV4l2SrcClass;
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/* global info */
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struct _GstV4l2BufferPool
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{
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gint refcount; /* number of users: 1 for every buffer, 1 for element */
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gint video_fd;
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guint buffer_count;
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GstV4l2Buffer *buffers;
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};
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struct _GstV4l2Buffer
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{
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struct v4l2_buffer buffer;
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guint8 *start;
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guint length;
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gint refcount; /* add 1 if in use by element, add 1 if in use by GstBuffer */
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GstV4l2BufferPool *pool;
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};
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/**
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* GstV4l2Src:
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* @pushsrc: parent #GstPushSrc.
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*
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* Opaque object.
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*/
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struct _GstV4l2Src
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{
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GstPushSrc pushsrc;
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/*< private >*/
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GstV4l2Object * v4l2object;
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/* pads */
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GstPad *srcpad;
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GstCaps *probed_caps;
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/* internal lists */
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GSList *formats; /* list of available capture formats */
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/* buffers */
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GstV4l2BufferPool *pool;
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guint32 num_buffers;
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gboolean use_mmap;
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guint32 frame_byte_size;
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/* True if we want to stop */
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gboolean quit;
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gboolean is_capturing;
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guint64 offset;
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};
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struct _GstV4l2SrcClass
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{
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GstPushSrcClass parent_class;
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GList *v4l2_class_devices;
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};
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GType gst_v4l2src_get_type (void);
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G_END_DECLS
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#endif /* __GST_V4L2SRC_H__ */
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