mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
418 lines
12 KiB
C
418 lines
12 KiB
C
/* GStreamer
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* Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <string.h>
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#include "gstfrei0r.h"
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#include "gstfrei0rsrc.h"
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GST_DEBUG_CATEGORY_EXTERN (frei0r_debug);
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#define GST_CAT_DEFAULT frei0r_debug
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typedef struct
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{
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f0r_plugin_info_t info;
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GstFrei0rFuncTable ftable;
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} GstFrei0rSrcClassData;
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static gboolean
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gst_frei0r_src_set_caps (GstBaseSrc * src, GstCaps * caps)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (src);
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gst_video_info_init (&self->info);
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if (!gst_video_info_from_caps (&self->info, caps))
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return FALSE;
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gst_base_src_set_blocksize (src, self->info.size);
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return TRUE;
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}
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static GstFlowReturn
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gst_frei0r_src_fill (GstPushSrc * src, GstBuffer * buf)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (src);
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GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (src);
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GstClockTime timestamp;
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gdouble time;
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GstMapInfo map;
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if (G_UNLIKELY (!self->f0r_instance)) {
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self->f0r_instance =
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gst_frei0r_instance_construct (klass->ftable, klass->properties,
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klass->n_properties, self->property_cache, self->info.width,
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self->info.height);
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if (G_UNLIKELY (!self->f0r_instance))
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return GST_FLOW_ERROR;
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}
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timestamp =
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gst_util_uint64_scale (self->n_frames, GST_SECOND * self->info.fps_d,
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self->info.fps_n);
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GST_BUFFER_PTS (buf) = GST_BUFFER_DTS (buf) = timestamp;
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GST_BUFFER_OFFSET (buf) = self->n_frames;
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self->n_frames++;
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GST_BUFFER_OFFSET_END (buf) = self->n_frames;
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GST_BUFFER_DURATION (buf) =
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gst_util_uint64_scale (self->n_frames, GST_SECOND * self->info.fps_d,
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self->info.fps_n) - GST_BUFFER_TIMESTAMP (buf);
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timestamp =
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gst_segment_to_stream_time (&GST_BASE_SRC_CAST (self)->segment,
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GST_FORMAT_TIME, timestamp);
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GST_DEBUG_OBJECT (self, "sync to %" GST_TIME_FORMAT,
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GST_TIME_ARGS (timestamp));
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if (GST_CLOCK_TIME_IS_VALID (timestamp))
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gst_object_sync_values (GST_OBJECT (self), timestamp);
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time = ((gdouble) GST_BUFFER_TIMESTAMP (buf)) / GST_SECOND;
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GST_OBJECT_LOCK (self);
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if (!gst_buffer_map (buf, &map, GST_MAP_WRITE))
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goto map_error;
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if (klass->ftable->update2)
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klass->ftable->update2 (self->f0r_instance, time, NULL, NULL, NULL,
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(guint32 *) map.data);
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else
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klass->ftable->update (self->f0r_instance, time, NULL,
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(guint32 *) map.data);
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gst_buffer_unmap (buf, &map);
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GST_OBJECT_UNLOCK (self);
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return GST_FLOW_OK;
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map_error:
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GST_OBJECT_UNLOCK (self);
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GST_ELEMENT_ERROR (GST_ELEMENT (src), RESOURCE, WRITE, (NULL),
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("Could not map buffer for writing"));
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return GST_FLOW_ERROR;
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}
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static gboolean
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gst_frei0r_src_start (GstBaseSrc * basesrc)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (basesrc);
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self->n_frames = 0;
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return TRUE;
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}
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static gboolean
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gst_frei0r_src_stop (GstBaseSrc * basesrc)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (basesrc);
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GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (basesrc);
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if (self->f0r_instance) {
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klass->ftable->destruct (self->f0r_instance);
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self->f0r_instance = NULL;
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}
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gst_video_info_init (&self->info);
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self->n_frames = 0;
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return TRUE;
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}
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static gboolean
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gst_frei0r_src_is_seekable (GstBaseSrc * psrc)
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{
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return TRUE;
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}
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static gboolean
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gst_frei0r_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment)
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{
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GstClockTime time;
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GstFrei0rSrc *self = GST_FREI0R_SRC (bsrc);
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segment->time = segment->start;
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time = segment->position;
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/* now move to the time indicated */
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if (self->info.fps_n) {
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self->n_frames = gst_util_uint64_scale (time,
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self->info.fps_n, self->info.fps_d * GST_SECOND);
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} else {
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self->n_frames = 0;
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}
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return TRUE;
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}
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static gboolean
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gst_frei0r_src_query (GstBaseSrc * bsrc, GstQuery * query)
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{
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gboolean res;
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GstFrei0rSrc *self = GST_FREI0R_SRC (bsrc);
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GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (self);
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switch (GST_QUERY_TYPE (query)) {
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case GST_QUERY_CONVERT:
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{
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GstFormat src_fmt, dest_fmt;
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gint64 src_val, dest_val;
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gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
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if (src_fmt == dest_fmt) {
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dest_val = src_val;
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goto done;
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}
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switch (src_fmt) {
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case GST_FORMAT_DEFAULT:
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switch (dest_fmt) {
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case GST_FORMAT_TIME:
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/* frames to time */
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if (self->info.fps_n) {
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dest_val = gst_util_uint64_scale (src_val,
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self->info.fps_d * GST_SECOND, self->info.fps_n);
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} else {
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dest_val = 0;
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}
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break;
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default:
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goto error;
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}
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break;
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case GST_FORMAT_TIME:
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switch (dest_fmt) {
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case GST_FORMAT_DEFAULT:
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/* time to frames */
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if (self->info.fps_n) {
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dest_val = gst_util_uint64_scale (src_val,
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self->info.fps_n, self->info.fps_d * GST_SECOND);
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} else {
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dest_val = 0;
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}
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break;
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default:
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goto error;
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}
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break;
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default:
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goto error;
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}
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done:
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gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
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res = TRUE;
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break;
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}
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default:
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res =
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GST_BASE_SRC_CLASS (g_type_class_peek_parent (klass))->query (bsrc,
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query);
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}
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return res;
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/* ERROR */
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error:
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{
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GST_DEBUG_OBJECT (self, "query failed");
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return FALSE;
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}
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}
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static GstCaps *
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gst_frei0r_src_fixate (GstBaseSrc * src, GstCaps * caps)
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{
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GstStructure *structure;
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caps = gst_caps_make_writable (caps);
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structure = gst_caps_get_structure (caps, 0);
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gst_structure_fixate_field_nearest_int (structure, "width", 320);
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gst_structure_fixate_field_nearest_int (structure, "height", 240);
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gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
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return caps;
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}
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static void
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gst_frei0r_src_finalize (GObject * object)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (object);
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GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (object);
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if (self->f0r_instance) {
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klass->ftable->destruct (self->f0r_instance);
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self->f0r_instance = NULL;
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}
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if (self->property_cache)
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gst_frei0r_property_cache_free (klass->properties, self->property_cache,
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klass->n_properties);
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self->property_cache = NULL;
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G_OBJECT_CLASS (g_type_class_peek_parent (klass))->finalize (object);
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}
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static void
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gst_frei0r_src_get_property (GObject * object, guint prop_id, GValue * value,
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GParamSpec * pspec)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (object);
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GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (object);
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GST_OBJECT_LOCK (self);
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if (!gst_frei0r_get_property (self->f0r_instance, klass->ftable,
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klass->properties, klass->n_properties, self->property_cache, prop_id,
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value))
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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GST_OBJECT_UNLOCK (self);
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}
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static void
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gst_frei0r_src_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstFrei0rSrc *self = GST_FREI0R_SRC (object);
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GstFrei0rSrcClass *klass = GST_FREI0R_SRC_GET_CLASS (object);
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GST_OBJECT_LOCK (self);
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if (!gst_frei0r_set_property (self->f0r_instance, klass->ftable,
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klass->properties, klass->n_properties, self->property_cache, prop_id,
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value))
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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GST_OBJECT_UNLOCK (self);
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}
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static void
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gst_frei0r_src_class_init (GstFrei0rSrcClass * klass,
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GstFrei0rSrcClassData * class_data)
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{
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GObjectClass *gobject_class = (GObjectClass *) klass;
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GstElementClass *gstelement_class = (GstElementClass *) klass;
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GstPushSrcClass *gstpushsrc_class = (GstPushSrcClass *) klass;
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GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
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GstPadTemplate *templ;
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const gchar *desc;
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GstCaps *caps;
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gchar *author;
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klass->ftable = &class_data->ftable;
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klass->info = &class_data->info;
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gobject_class->finalize = gst_frei0r_src_finalize;
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gobject_class->set_property = gst_frei0r_src_set_property;
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gobject_class->get_property = gst_frei0r_src_get_property;
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klass->n_properties = klass->info->num_params;
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klass->properties = g_new0 (GstFrei0rProperty, klass->n_properties);
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gst_frei0r_klass_install_properties (gobject_class, klass->ftable,
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klass->properties, klass->n_properties);
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author =
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g_strdup_printf
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("Sebastian Dröge <sebastian.droege@collabora.co.uk>, %s",
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class_data->info.author);
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desc = class_data->info.explanation;
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if (desc == NULL || *desc == '\0')
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desc = "No details";
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gst_element_class_set_metadata (gstelement_class, class_data->info.name,
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"Src/Video", desc, author);
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g_free (author);
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caps = gst_frei0r_caps_from_color_model (class_data->info.color_model);
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templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
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gst_element_class_add_pad_template (gstelement_class, templ);
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gst_caps_unref (caps);
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gstbasesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_frei0r_src_set_caps);
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gstbasesrc_class->is_seekable =
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GST_DEBUG_FUNCPTR (gst_frei0r_src_is_seekable);
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gstbasesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_frei0r_src_do_seek);
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gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_frei0r_src_query);
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gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_frei0r_src_start);
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gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_frei0r_src_stop);
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gstbasesrc_class->fixate = GST_DEBUG_FUNCPTR (gst_frei0r_src_fixate);
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gstpushsrc_class->fill = GST_DEBUG_FUNCPTR (gst_frei0r_src_fill);
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}
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static void
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gst_frei0r_src_init (GstFrei0rSrc * self, GstFrei0rSrcClass * klass)
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{
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self->property_cache =
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gst_frei0r_property_cache_init (klass->properties, klass->n_properties);
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gst_video_info_init (&self->info);
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gst_base_src_set_format (GST_BASE_SRC_CAST (self), GST_FORMAT_TIME);
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}
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GstFrei0rPluginRegisterReturn
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gst_frei0r_src_register (GstPlugin * plugin, const gchar * vendor,
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const f0r_plugin_info_t * info, const GstFrei0rFuncTable * ftable)
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{
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GTypeInfo typeinfo = {
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sizeof (GstFrei0rSrcClass),
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NULL,
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NULL,
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(GClassInitFunc) gst_frei0r_src_class_init,
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NULL,
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NULL,
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sizeof (GstFrei0rSrc),
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0,
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(GInstanceInitFunc) gst_frei0r_src_init
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};
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GType type;
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gchar *type_name, *tmp;
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GstFrei0rSrcClassData *class_data;
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GstFrei0rPluginRegisterReturn ret = GST_FREI0R_PLUGIN_REGISTER_RETURN_FAILED;
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if (vendor)
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tmp = g_strdup_printf ("frei0r-src-%s-%s", vendor, info->name);
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else
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tmp = g_strdup_printf ("frei0r-src-%s", info->name);
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type_name = g_ascii_strdown (tmp, -1);
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g_free (tmp);
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g_strcanon (type_name, G_CSET_A_2_Z G_CSET_a_2_z G_CSET_DIGITS "-+", '-');
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if (g_type_from_name (type_name)) {
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GST_DEBUG ("Type '%s' already exists", type_name);
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return GST_FREI0R_PLUGIN_REGISTER_RETURN_ALREADY_REGISTERED;
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}
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class_data = g_new0 (GstFrei0rSrcClassData, 1);
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memcpy (&class_data->info, info, sizeof (f0r_plugin_info_t));
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memcpy (&class_data->ftable, ftable, sizeof (GstFrei0rFuncTable));
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typeinfo.class_data = class_data;
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type = g_type_register_static (GST_TYPE_PUSH_SRC, type_name, &typeinfo, 0);
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if (gst_element_register (plugin, type_name, GST_RANK_NONE, type))
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ret = GST_FREI0R_PLUGIN_REGISTER_RETURN_OK;
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g_free (type_name);
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return ret;
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}
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