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imagesequencesrc: Cleanup and add some features

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* Implement the GstURIHandlerInterface
* Rework the locking
* Implement backward seeking handling
* Generate documentation
This commit is contained in:
Thibault Saunier 2020-02-11 16:19:15 -03:00 committed by GStreamer Merge Bot
parent 7511999083
commit 21bc0d527b
5 changed files with 429 additions and 154 deletions
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99
docs/gst_plugins_cache.json
View file

@ -12630,6 +12630,105 @@
"multifile": {
"description": "Reads/Writes buffers from/to sequentially named files",
"elements": {
"imagesequencesrc": {
"author": "Cesar Fabian Orccon Chipana <cfoch.fabian@gmail.com>\nThibault Saunier <tsaunier@igalia.com>",
"description": "Create a video stream from a sequence of image files",
"hierarchy": [
"GstImageSequenceSrc",
"GstPushSrc",
"GstBaseSrc",
"GstElement",
"GstObject",
"GInitiallyUnowned",
"GObject"
],
"klass": "Source/File/Video",
"long-name": "Image Sequence Source",
"pad-templates": {
"src": {
"caps": "ANY",
"direction": "src",
"presence": "always"
}
},
"properties": {
"blocksize": {
"blurb": "Size in bytes to read per buffer (-1 = default)",
"construct": false,
"construct-only": false,
"default": "4096",
"max": "-1",
"min": "0",
"type-name": "guint",
"writable": true
},
"do-timestamp": {
"blurb": "Apply current stream time to buffers",
"construct": false,
"construct-only": false,
"default": "false",
"type-name": "gboolean",
"writable": true
},
"framerate": {
"blurb": "The output framerate.",
"construct": false,
"construct-only": false,
"default": "30/1",
"max": "2147483647/1",
"min": "1/1",
"type-name": "GstFraction",
"writable": true
},
"location": {
"blurb": "Pattern to create file names of input files. File names are created by calling sprintf() with the pattern and the current index.",
"construct": false,
"construct-only": false,
"default": "NULL",
"type-name": "gchararray",
"writable": true
},
"num-buffers": {
"blurb": "Number of buffers to output before sending EOS (-1 = unlimited)",
"construct": false,
"construct-only": false,
"default": "-1",
"max": "2147483647",
"min": "-1",
"type-name": "gint",
"writable": true
},
"start-index": {
"blurb": "Start value of index. The initial value of index can be set either by setting index or start-index. When the end of the loop is reached, the index will be set to the value start-index.",
"construct": false,
"construct-only": false,
"default": "0",
"max": "2147483647",
"min": "0",
"type-name": "gint",
"writable": true
},
"stop-index": {
"blurb": "Stop value of index. The special value -1 means no stop.",
"construct": false,
"construct-only": false,
"default": "-1",
"max": "2147483647",
"min": "-1",
"type-name": "gint",
"writable": true
},
"typefind": {
"blurb": "Run typefind before negotiating (deprecated, non-functional)",
"construct": false,
"construct-only": false,
"default": "false",
"type-name": "gboolean",
"writable": true
}
},
"rank": "none"
},
"multifilesink": {
"author": "David Schleef <ds@schleef.org>",
"description": "Write buffers to a sequentially named set of files",

444
gst/multifile/gstimagesequencesrc.c
View file

@ -1,5 +1,7 @@
/* GStreamer
* Copyright (C) 2006 David A. Schleef ds@schleef.org
* Copyright (C) 2019 Cesar Fabian Orccon Chipana
* Copyright (C) 2020 Thibault Saunier <tsaunier@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -18,27 +20,41 @@
*/
/**
* SECTION:element-gstimagesequencesrc
* SECTION:element-imagesequencesrc
*
* Stream image sequences from image files.
* <refsect2>
*
* |[
* gst-launch-1.0 imagesequencesrc location=%d.jpg start-index=1 stop-index=50 framerate=24/1 ! decodebin ! videoconvert ! autovideosink
* ]|
* ```
* gst-launch-1.0 imagesequencesrc location=image-%05d.jpg start-index=1 stop-index=50 framerate=24/1 ! decodebin ! videoconvert ! autovideosink
* ```
*
* </refsect2>
* This elements implements the #GstURIHandler interface meaning that you can use it with playbin,
* (make sure to quote the URI for the filename pattern, like: `%2505d` instead of the `%05d` you would use
* when dealing with the location).
*
* Note that you can pass the #imagesequencesrc:framerate, #imagesequencesrc:start-index and #imagesequencesrc:stop-index
* properties directly in the URI using its 'query' component, for example:
*
* ```
* gst-launch-1.0 playbin uri="imagesequence://path/to/image-%2505d.jpeg?start-index=0&framerate=30/1"
* ```
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/gst.h>
#include <gst/base/gsttypefindhelper.h>
#include "gstimagesequencesrc.h"
#define LOCK(self) (g_rec_mutex_lock (&self->fields_lock))
#define UNLOCK(self) (g_rec_mutex_unlock (&self->fields_lock))
static GstFlowReturn gst_image_sequence_src_create (GstPushSrc * src,
GstBuffer ** buffer);
static void gst_image_sequence_src_dispose (GObject * object);
static void gst_image_sequence_src_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
@ -48,10 +64,11 @@ static GstCaps *gst_image_sequence_src_getcaps (GstBaseSrc * src,
GstCaps * filter);
static gboolean gst_image_sequence_src_query (GstBaseSrc * src,
GstQuery * query);
static void gst_image_sequence_src_set_caps (GstImageSequenceSrc * src,
static void gst_image_sequence_src_set_caps (GstImageSequenceSrc * self,
GstCaps * caps);
static void gst_image_sequence_src_set_duration (GstImageSequenceSrc * src);
static gint gst_image_sequence_src_count_frames (GstImageSequenceSrc * self);
static void gst_image_sequence_src_set_duration (GstImageSequenceSrc * self);
static gint gst_image_sequence_src_count_frames (GstImageSequenceSrc * self,
gboolean can_read);
static GstStaticPadTemplate gst_image_sequence_src_pad_template =
@ -67,17 +84,147 @@ enum
{
PROP_0,
PROP_LOCATION,
PROP_INDEX,
PROP_START_INDEX,
PROP_STOP_INDEX,
PROP_FRAMERATE
};
#define DEFAULT_LOCATION "%05d"
#define DEFAULT_INDEX 0
#define DEFAULT_START_INDEX 0
#define DEFAULT_STOP_INDEX -1
#define DEFAULT_FRAMERATE 30
/* Call with LOCK taken */
static gboolean
gst_image_sequence_src_set_location (GstImageSequenceSrc * self,
const gchar * location)
{
g_free (self->path);
if (location != NULL)
self->path = g_strdup (location);
else
self->path = NULL;
return TRUE;
}
/*** GSTURIHANDLER INTERFACE *************************************************/
static GstURIType
gst_image_sequence_src_uri_get_type (GType type)
{
return GST_URI_SRC;
}
static const gchar *const *
gst_image_sequence_src_uri_get_protocols (GType type)
{
static const gchar *protocols[] = { "imagesequence", NULL };
return protocols;
}
static gchar *
gst_image_sequence_src_uri_get_uri (GstURIHandler * handler)
{
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (handler);
gchar *uri = NULL;
LOCK (self);
if (self->uri)
uri = gst_uri_to_string (self->uri);
else if (self->path)
uri = gst_uri_construct ("imagesequence", self->path);
UNLOCK (self);
return uri;
}
static gboolean
gst_image_sequence_src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
GError ** err)
{
gchar *hostname = NULL, *location = NULL, *tmp;
gboolean ret = FALSE;
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (handler);
GstUri *ruri = gst_uri_from_string (uri);
GHashTable *query = NULL;
if (!ruri) {
g_set_error (err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"imagesequencesrc URI is invalid: '%s'", uri);
goto beach;
}
LOCK (self);
g_clear_pointer (&self->uri, gst_uri_unref);
self->uri = ruri;
tmp = gst_filename_to_uri (gst_uri_get_path (ruri), err);
location = g_filename_from_uri (tmp, &hostname, err);
g_free (tmp);
query = gst_uri_get_query_table (ruri);
if (!location || (err != NULL && *err != NULL)) {
GST_WARNING_OBJECT (self, "Invalid URI '%s' for imagesequencesrc: %s", uri,
(err != NULL && *err != NULL) ? (*err)->message : "unknown error");
goto beach;
}
if (hostname && strcmp (hostname, "localhost")) {
/* Only 'localhost' is permitted */
GST_WARNING_OBJECT (self, "Invalid hostname '%s' for filesrc", hostname);
g_set_error (err, GST_URI_ERROR, GST_URI_ERROR_BAD_URI,
"File URI with invalid hostname '%s'", hostname);
goto beach;
}
#ifdef G_OS_WIN32
/* Unfortunately, g_filename_from_uri() doesn't handle some UNC paths
* correctly on windows, it leaves them with an extra backslash
* at the start if they're of the mozilla-style file://///host/path/file
* form. Correct this.
*/
if (location[0] == '\\' && location[1] == '\\' && location[2] == '\\')
memmove (location, location + 1, strlen (location + 1) + 1);
#endif
ret = gst_image_sequence_src_set_location (self, location);
if (query) {
GHashTableIter iter;
gpointer key, value;
g_hash_table_iter_init (&iter, query);
while (g_hash_table_iter_next (&iter, &key, &value)) {
GST_INFO_OBJECT (self, "Setting property from URI: %s=%s", (gchar *) key,
(gchar *) value);
gst_util_set_object_arg (G_OBJECT (self), key, value);
}
}
beach:
UNLOCK (self);
g_free (location);
g_free (hostname);
g_clear_pointer (&query, g_hash_table_unref);
return ret;
}
static void
gst_image_sequence_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_image_sequence_src_uri_get_type;
iface->get_protocols = gst_image_sequence_src_uri_get_protocols;
iface->get_uri = gst_image_sequence_src_uri_get_uri;
iface->set_uri = gst_image_sequence_src_uri_set_uri;
}
#define gst_image_sequence_src_parent_class parent_class
#define _do_init \
G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER, gst_image_sequence_src_uri_handler_init); \
GST_DEBUG_CATEGORY_INIT (gst_image_sequence_src_debug, "imagesequencesrc", \
0, "imagesequencesrc element");
G_DEFINE_TYPE_WITH_CODE (GstImageSequenceSrc, gst_image_sequence_src,
@ -88,7 +235,7 @@ is_seekable (GstBaseSrc * src)
{
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (src);
if ((self->count_frames != 0) && (self->fps_n) && (self->fps_d))
if ((self->n_frames != 0) && (self->fps_n) && (self->fps_d))
return TRUE;
return FALSE;
}
@ -97,27 +244,44 @@ is_seekable (GstBaseSrc * src)
static gboolean
do_seek (GstBaseSrc * bsrc, GstSegment * segment)
{
GstImageSequenceSrc *src;
gboolean reverse;
GstImageSequenceSrc *self;
src = GST_IMAGE_SEQUENCE_SRC (bsrc);
self = GST_IMAGE_SEQUENCE_SRC (bsrc);
reverse = segment->rate < 0;
if (reverse) {
GST_FIXME_OBJECT (src, "Handle reverse playback");
return FALSE;
self->reverse = segment->rate < 0;
if (self->reverse) {
segment->time = segment->start;
}
segment->time = segment->start;
src->index = src->start_index +
segment->position * src->fps_n / (src->fps_d * GST_SECOND);
GST_DEBUG_OBJECT (src, "Seek to frame at index %d.\n", src->index);
self->index =
self->start_index +
segment->position * self->fps_n / (self->fps_d * GST_SECOND);
return TRUE;
}
static void
gst_image_sequence_src_finalize (GObject * object)
{
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (object);
g_clear_pointer (&self->path, g_free);
g_rec_mutex_clear (&self->fields_lock);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_image_sequence_src_dispose (GObject * object)
{
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (object);
gst_clear_caps (&self->caps);
g_clear_pointer (&self->uri, gst_uri_unref);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_image_sequence_src_class_init (GstImageSequenceSrcClass * klass)
{
@ -129,35 +293,32 @@ gst_image_sequence_src_class_init (GstImageSequenceSrcClass * klass)
gobject_class->set_property = gst_image_sequence_src_set_property;
gobject_class->get_property = gst_image_sequence_src_get_property;
g_object_class_install_property (gobject_class, PROP_LOCATION,
g_param_spec_string ("location", "File Location",
"Pattern to create file names of input files. File names are "
"created by calling sprintf() with the pattern and the current "
"index.", DEFAULT_LOCATION,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_INDEX,
g_param_spec_int ("index", "File Index",
"Index to use with location property to create file names. The "
"index is incremented by one for each buffer read.",
0, INT_MAX, DEFAULT_INDEX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_START_INDEX,
g_param_spec_int ("start-index", "Start Index",
"Start value of index. The initial value of index can be set "
"either by setting index or start-index. When the end of the loop "
"is reached, the index will be set to the value start-index.",
0, INT_MAX, DEFAULT_INDEX,
0, INT_MAX, DEFAULT_START_INDEX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_STOP_INDEX,
g_param_spec_int ("stop-index", "Stop Index",
"Stop value of index. The special value -1 means no stop.",
-1, INT_MAX, DEFAULT_INDEX,
-1, INT_MAX, DEFAULT_STOP_INDEX,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_FRAMERATE,
gst_param_spec_fraction ("framerate", "Framerate",
"Set the framerate to internal caps.",
1, 1, G_MAXINT, 1, 1, 1, G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
"The output framerate.",
1, 1, G_MAXINT, 1, DEFAULT_FRAMERATE, 1,
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
gobject_class->finalize = gst_image_sequence_src_finalize;
gobject_class->dispose = gst_image_sequence_src_dispose;
gstbasesrc_class->get_caps = gst_image_sequence_src_getcaps;
@ -170,9 +331,10 @@ gst_image_sequence_src_class_init (GstImageSequenceSrcClass * klass)
gst_element_class_add_static_pad_template (gstelement_class,
&gst_image_sequence_src_pad_template);
gst_element_class_set_static_metadata (gstelement_class,
"ImageSequenceSrc plugin", "Src/File",
"Creates an image-sequence video stream",
"Cesar Fabian Orccon Chipana <cfoch.fabian@gmail.com>");
"Image Sequence Source", "Source/File/Video",
"Create a video stream from a sequence of image files",
"Cesar Fabian Orccon Chipana <cfoch.fabian@gmail.com>\n"
"Thibault Saunier <tsaunier@igalia.com>");
}
static void
@ -185,25 +347,16 @@ gst_image_sequence_src_init (GstImageSequenceSrc * self)
bsrc = GST_BASE_SRC (self);
gst_base_src_set_format (bsrc, GST_FORMAT_TIME);
self->start_index = DEFAULT_INDEX;
self->index = DEFAULT_INDEX;
self->stop_index = -1;
self->filename = g_strdup (DEFAULT_LOCATION);
g_rec_mutex_init (&self->fields_lock);
self->start_index = DEFAULT_START_INDEX;
self->index = 0;
self->stop_index = DEFAULT_STOP_INDEX;
self->path = NULL;
self->caps = NULL;
self->count_frames = 0;
self->fps_n = self->fps_d = 1;
}
static void
gst_image_sequence_src_dispose (GObject * object)
{
GstImageSequenceSrc *src = GST_IMAGE_SEQUENCE_SRC (object);
g_clear_pointer (&src->filename, g_free);
if (src->caps)
gst_clear_caps (&src->caps);
G_OBJECT_CLASS (parent_class)->dispose (object);
self->n_frames = 0;
self->fps_n = 30;
self->fps_d = 1;
}
static GstCaps *
@ -211,7 +364,7 @@ gst_image_sequence_src_getcaps (GstBaseSrc * src, GstCaps * filter)
{
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (src);
GST_DEBUG_OBJECT (src, "returning %" GST_PTR_FORMAT, self->caps);
GST_DEBUG_OBJECT (self, "returning %" GST_PTR_FORMAT, self->caps);
if (filter) {
if (self->caps)
@ -228,9 +381,9 @@ static gboolean
gst_image_sequence_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
gboolean ret;
GstImageSequenceSrc *src;
GstImageSequenceSrc *self;
src = GST_IMAGE_SEQUENCE_SRC (bsrc);
self = GST_IMAGE_SEQUENCE_SRC (bsrc);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_DURATION:
@ -241,8 +394,16 @@ gst_image_sequence_src_query (GstBaseSrc * bsrc, GstQuery * query)
switch (format) {
case GST_FORMAT_TIME:
if (src->count_frames > 0)
gst_query_set_duration (query, format, src->duration);
LOCK (self);
if (self->n_frames <= 0) {
gst_image_sequence_src_count_frames (self, FALSE);
gst_image_sequence_src_set_duration (self);
}
if (self->n_frames > 0)
gst_query_set_duration (query, format, self->duration);
UNLOCK (self);
ret = TRUE;
break;
default:
@ -258,46 +419,24 @@ gst_image_sequence_src_query (GstBaseSrc * bsrc, GstQuery * query)
return ret;
}
static gboolean
gst_image_sequence_src_set_location (GstImageSequenceSrc * src,
const gchar * location)
{
g_free (src->filename);
if (location != NULL)
src->filename = g_strdup (location);
else
src->filename = NULL;
return TRUE;
}
static void
gst_image_sequence_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (object);
LOCK (self);
switch (prop_id) {
case PROP_LOCATION:
gst_image_sequence_src_set_location (self, g_value_get_string (value));
break;
case PROP_INDEX:
GST_OBJECT_LOCK (self);
/* index was really meant to be read-only, but for backwards-compatibility
* we set start_index to make it work as it used to */
if (!GST_OBJECT_FLAG_IS_SET (self, GST_BASE_SRC_FLAG_STARTED))
self->start_index = g_value_get_int (value);
else
self->index = g_value_get_int (value);
GST_OBJECT_UNLOCK (self);
break;
case PROP_START_INDEX:
self->start_index = g_value_get_int (value);
gst_image_sequence_src_count_frames (self);
gst_image_sequence_src_count_frames (self, FALSE);
break;
case PROP_STOP_INDEX:
self->stop_index = g_value_get_int (value);
gst_image_sequence_src_count_frames (self);
gst_image_sequence_src_count_frames (self, FALSE);
break;
case PROP_FRAMERATE:
self->fps_n = gst_value_get_fraction_numerator (value);
@ -307,44 +446,65 @@ gst_image_sequence_src_set_property (GObject * object, guint prop_id,
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
UNLOCK (self);
}
static void
gst_image_sequence_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstImageSequenceSrc *src = GST_IMAGE_SEQUENCE_SRC (object);
GstImageSequenceSrc *self = GST_IMAGE_SEQUENCE_SRC (object);
LOCK (self);
switch (prop_id) {
case PROP_LOCATION:
g_value_set_string (value, src->filename);
break;
case PROP_INDEX:
g_value_set_int (value, src->index);
g_value_set_string (value, self->path);
break;
case PROP_START_INDEX:
g_value_set_int (value, src->start_index);
g_value_set_int (value, self->start_index);
break;
case PROP_STOP_INDEX:
g_value_set_int (value, src->stop_index);
g_value_set_int (value, self->stop_index);
break;
case PROP_FRAMERATE:
src->fps_n = gst_value_get_fraction_numerator (value);
src->fps_d = gst_value_get_fraction_denominator (value);
GST_DEBUG_OBJECT (src, "Set (framerate) property to (%d/%d)", src->fps_n,
src->fps_d);
self->fps_n = gst_value_get_fraction_numerator (value);
self->fps_d = gst_value_get_fraction_denominator (value);
GST_DEBUG_OBJECT (self, "Set (framerate) property to (%d/%d)",
self->fps_n, self->fps_d);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
UNLOCK (self);
}
/* Call with LOCK */
static gint
gst_image_sequence_src_count_frames (GstImageSequenceSrc * self)
gst_image_sequence_src_count_frames (GstImageSequenceSrc * self,
gboolean can_read)
{
self->count_frames = self->stop_index - self->start_index + 1;
return self->count_frames;
if (can_read && self->stop_index < 0 && self->path) {
gint i;
for (i = self->start_index;; i++) {
gchar *filename = g_strdup_printf (self->path, i);
if (!g_file_test (filename, G_FILE_TEST_IS_REGULAR)) {
i--;
g_free (filename);
break;
}
g_free (filename);
}
if (i > self->start_index)
self->stop_index = i;
}
if (self->stop_index >= self->start_index)
self->n_frames = self->stop_index - self->start_index + 1;
return self->n_frames;
}
static void
@ -355,36 +515,50 @@ gst_image_sequence_src_set_caps (GstImageSequenceSrc * self, GstCaps * caps)
g_assert (caps != NULL);
new_caps = gst_caps_copy (caps);
if (self->count_frames > 0) {
if (self->n_frames > 0) {
GValue fps = G_VALUE_INIT;
g_value_init (&fps, GST_TYPE_FRACTION);
gst_value_set_fraction (&fps, self->fps_n, self->fps_d);
gst_caps_set_value (new_caps, "framerate", &fps);
g_value_unset (&fps);
}
gst_caps_replace (&self->caps, new_caps);
gst_pad_set_caps (GST_BASE_SRC_PAD (self), new_caps);
GST_DEBUG_OBJECT (self, "Setting new caps: %s",
gst_caps_to_string (new_caps));
GST_DEBUG_OBJECT (self, "Setting new caps: %" GST_PTR_FORMAT, new_caps);
}
/* Call with LOCK */
static void
gst_image_sequence_src_set_duration (GstImageSequenceSrc * self)
{
GstClockTime old_duration = self->duration;
if (self->n_frames <= 0)
return;
/* Calculate duration */
self->duration =
gst_util_uint64_scale (GST_SECOND * self->count_frames, self->fps_d,
gst_util_uint64_scale (GST_SECOND * self->n_frames, self->fps_d,
self->fps_n);
if (self->duration != old_duration) {
UNLOCK (self);
gst_element_post_message (GST_ELEMENT (self),
gst_message_new_duration_changed (GST_OBJECT (self)));
LOCK (self);
}
}
/* Call with LOCK */
static gchar *
gst_image_sequence_src_get_filename (GstImageSequenceSrc * self)
{
gchar *filename;
GST_DEBUG ("Reading filename at index %d.", self->index);
filename = g_strdup_printf (self->filename, self->index);
filename = g_strdup_printf (self->path, self->index);
return filename;
}
@ -399,58 +573,70 @@ gst_image_sequence_src_create (GstPushSrc * src, GstBuffer ** buffer)
GstBuffer *buf;
gboolean ret;
GError *error = NULL;
gint fps_n, fps_d, start_index, stop_index;
self = GST_IMAGE_SEQUENCE_SRC (src);
if (self->index > self->stop_index)
LOCK (self);
start_index = self->start_index;
stop_index = self->stop_index;
if (self->index > stop_index && stop_index > 0) {
UNLOCK (self);
return GST_FLOW_EOS;
}
if (self->index < self->start_index)
self->index = self->start_index;
g_assert (self->start_index <= self->index &&
self->index <= self->stop_index);
g_assert (start_index <= self->index &&
(self->index <= stop_index || stop_index <= 0));
filename = gst_image_sequence_src_get_filename (self);
fps_n = self->fps_n;
fps_d = self->fps_d;
UNLOCK (self);
GST_DEBUG_OBJECT (self, "reading from file \"%s\".", filename);
if (!filename)
goto handle_error;
ret = g_file_get_contents (filename, &data, &size, &error);
if (!ret)
goto handle_error;
buf = gst_buffer_new_wrapped (data, size);
buf = gst_buffer_new_wrapped_full (0, data, size, 0, size, NULL, g_free);
if (!self->caps) {
GstCaps *caps;
caps = gst_type_find_helper_for_buffer (NULL, buf, NULL);
gst_image_sequence_src_set_caps (self, caps);
if (!caps) {
GST_ELEMENT_ERROR (self, STREAM, TYPE_NOT_FOUND, (NULL),
("Could not determine image type."));
return GST_FLOW_NOT_SUPPORTED;
}
LOCK (self);
gst_image_sequence_src_count_frames (self, TRUE);
gst_image_sequence_src_set_duration (self);
UNLOCK (self);
gst_image_sequence_src_set_caps (self, caps);
gst_caps_unref (caps);
}
self->buffer_duration = GST_SECOND * self->fps_d / self->fps_n;
GST_BUFFER_PTS (buf) =
(self->index - self->start_index) * self->buffer_duration;
GST_BUFFER_DURATION (buf) = self->buffer_duration;
GST_DEBUG_OBJECT (self, "index: %d", self->index);
GST_DEBUG_OBJECT (self, "Timestamp: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (buf)));
GST_DEBUG_OBJECT (self, "Buffer duration: %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
GST_BUFFER_OFFSET (buf) = self->index - self->start_index;
GST_BUFFER_OFFSET_END (buf) = self->index - self->start_index + 1;
GST_DEBUG_OBJECT (self, "read file \"%s\".", filename);
gst_util_uint64_scale_ceil ((self->index - start_index) * GST_SECOND,
fps_d, fps_n);
GST_BUFFER_DURATION (buf) = gst_util_uint64_scale (GST_SECOND, fps_d, fps_n);
GST_BUFFER_OFFSET (buf) = self->index - start_index;
GST_LOG_OBJECT (self, "index: %d, %s - %" GST_PTR_FORMAT, self->index,
filename, buf);
g_free (filename);
*buffer = buf;
self->index++;
self->index += self->reverse ? -1 : 1;
return GST_FLOW_OK;
handle_error:

36
gst/multifile/gstimagesequencesrc.h
View file

@ -1,5 +1,6 @@
/* GStreamer
* Copyright (C) 2019 Cesar Fabian Orccon Chipana
* Copyright (C) 2020 Thibault Saunier <tsaunier@igalia.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -25,44 +26,29 @@
G_BEGIN_DECLS
#define GST_TYPE_IMAGE_SEQUENCE_SRC \
(gst_image_sequence_src_get_type())
#define GST_IMAGE_SEQUENCE_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_IMAGE_SEQUENCE_SRC,GstImageSequenceSrc))
#define GST_IMAGE_SEQUENCE_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_IMAGE_SEQUENCE_SRC,GstImageSequenceSrcClass))
#define GST_IS_IMAGE_SEQUENCE_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_IMAGE_SEQUENCE_SRC))
#define GST_IS_IMAGE_SEQUENCE_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_IMAGE_SEQUENCE_SRC))
typedef struct _GstImageSequenceSrc GstImageSequenceSrc;
typedef struct _GstImageSequenceSrcClass GstImageSequenceSrcClass;
#define GST_TYPE_IMAGE_SEQUENCE_SRC (gst_image_sequence_src_get_type())
G_DECLARE_FINAL_TYPE(GstImageSequenceSrc, gst_image_sequence_src, GST, IMAGE_SEQUENCE_SRC, GstPushSrc)
struct _GstImageSequenceSrc
{
GstPushSrc parent;
gchar *filename;
int start_index;
int stop_index;
int index;
int count_frames;
GRecMutex fields_lock;
gchar* path;
GstUri *uri;
gint start_index;
gint stop_index;
gint index;
gint n_frames;
guint64 duration;
guint64 buffer_duration;
gboolean reverse;
GstCaps *caps;
gint fps_n, fps_d;
};
struct _GstImageSequenceSrcClass
{
GstPushSrcClass parent_class;
};
GType gst_image_sequence_src_get_type (void);
G_END_DECLS

3
gst/multifile/gstmultifile.c
View file

@ -33,6 +33,7 @@
#include "gstsplitfilesrc.h"
#include "gstsplitmuxsink.h"
#include "gstsplitmuxsrc.h"
#include "gstimagesequencesrc.h"
static gboolean
plugin_init (GstPlugin * plugin)
@ -43,6 +44,8 @@ plugin_init (GstPlugin * plugin)
gst_multi_file_sink_get_type ());
gst_element_register (plugin, "splitfilesrc", GST_RANK_NONE,
gst_split_file_src_get_type ());
gst_element_register (plugin, "imagesequencesrc", GST_RANK_NONE,
gst_image_sequence_src_get_type ());
if (!register_splitmuxsink (plugin))
return FALSE;

1
gst/multifile/meson.build
View file

@ -8,6 +8,7 @@ multifile_sources = [
'gstsplitmuxsrc.c',
'gstsplitutils.c',
'patternspec.c',
'gstimagesequencesrc.c',
]
gstmultifile = library('gstmultifile',