#include <string.h>
#include <gst/gst_private.h>
+#include <gst/glib-compat-private.h>
#include "gstbasesrc.h"
#include "gsttypefindhelper.h"
-#include <gst/gstmarshal.h>
#include <gst/gst-i18n-lib.h>
GST_DEBUG_CATEGORY_STATIC (gst_base_src_debug);
#define GST_CAT_DEFAULT gst_base_src_debug
-#define GST_LIVE_GET_LOCK(elem) (GST_BASE_SRC_CAST(elem)->live_lock)
+#define GST_LIVE_GET_LOCK(elem) (&GST_BASE_SRC_CAST(elem)->live_lock)
#define GST_LIVE_LOCK(elem) g_mutex_lock(GST_LIVE_GET_LOCK(elem))
#define GST_LIVE_TRYLOCK(elem) g_mutex_trylock(GST_LIVE_GET_LOCK(elem))
#define GST_LIVE_UNLOCK(elem) g_mutex_unlock(GST_LIVE_GET_LOCK(elem))
-#define GST_LIVE_GET_COND(elem) (GST_BASE_SRC_CAST(elem)->live_cond)
+#define GST_LIVE_GET_COND(elem) (&GST_BASE_SRC_CAST(elem)->live_cond)
#define GST_LIVE_WAIT(elem) g_cond_wait (GST_LIVE_GET_COND (elem), GST_LIVE_GET_LOCK (elem))
-#define GST_LIVE_TIMED_WAIT(elem, timeval) g_cond_timed_wait (GST_LIVE_GET_COND (elem), GST_LIVE_GET_LOCK (elem),\
- timeval)
+#define GST_LIVE_WAIT_UNTIL(elem, end_time) g_cond_timed_wait (GST_LIVE_GET_COND (elem), GST_LIVE_GET_LOCK (elem), end_time)
#define GST_LIVE_SIGNAL(elem) g_cond_signal (GST_LIVE_GET_COND (elem));
#define GST_LIVE_BROADCAST(elem) g_cond_broadcast (GST_LIVE_GET_COND (elem));
gboolean discont;
gboolean flushing;
+ GstFlowReturn start_result;
+ gboolean async;
+
+ /* if a stream-start event should be sent */
+ gboolean stream_start_pending;
+
/* if segment should be sent */
gboolean segment_pending;
GstClockTime earliest_time;
GstBufferPool *pool;
- const GstAllocator *allocator;
- guint prefix;
- guint alignment;
+ GstAllocator *allocator;
+ GstAllocationParams params;
};
static GstElementClass *parent_class = NULL;
static GstCaps *gst_base_src_default_get_caps (GstBaseSrc * bsrc,
GstCaps * filter);
-static void gst_base_src_default_fixate (GstBaseSrc * src, GstCaps * caps);
-static void gst_base_src_fixate (GstBaseSrc * src, GstCaps * caps);
+static GstCaps *gst_base_src_default_fixate (GstBaseSrc * src, GstCaps * caps);
+static GstCaps *gst_base_src_fixate (GstBaseSrc * src, GstCaps * caps);
static gboolean gst_base_src_is_random_access (GstBaseSrc * src);
-static gboolean gst_base_src_activate_push (GstPad * pad, gboolean active);
-static gboolean gst_base_src_activate_pull (GstPad * pad, gboolean active);
+static gboolean gst_base_src_activate_mode (GstPad * pad, GstObject * parent,
+ GstPadMode mode, gboolean active);
static void gst_base_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_base_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
-static gboolean gst_base_src_event_handler (GstPad * pad, GstEvent * event);
+static gboolean gst_base_src_event (GstPad * pad, GstObject * parent,
+ GstEvent * event);
static gboolean gst_base_src_send_event (GstElement * elem, GstEvent * event);
static gboolean gst_base_src_default_event (GstBaseSrc * src, GstEvent * event);
-static gboolean gst_base_src_query (GstPad * pad, GstQuery * query);
+static gboolean gst_base_src_query (GstPad * pad, GstObject * parent,
+ GstQuery * query);
static gboolean gst_base_src_activate_pool (GstBaseSrc * basesrc,
gboolean active);
static gboolean gst_base_src_set_flushing (GstBaseSrc * basesrc,
gboolean flushing, gboolean live_play, gboolean unlock, gboolean * playing);
+
static gboolean gst_base_src_start (GstBaseSrc * basesrc);
static gboolean gst_base_src_stop (GstBaseSrc * basesrc);
GstStateChange transition);
static void gst_base_src_loop (GstPad * pad);
-static GstFlowReturn gst_base_src_pad_get_range (GstPad * pad, guint64 offset,
- guint length, GstBuffer ** buf);
+static GstFlowReturn gst_base_src_getrange (GstPad * pad, GstObject * parent,
+ guint64 offset, guint length, GstBuffer ** buf);
static GstFlowReturn gst_base_src_get_range (GstBaseSrc * src, guint64 offset,
guint length, GstBuffer ** buf);
static gboolean gst_base_src_seekable (GstBaseSrc * src);
klass->alloc = GST_DEBUG_FUNCPTR (gst_base_src_default_alloc);
/* Registering debug symbols for function pointers */
- GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_activate_push);
- GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_activate_pull);
- GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_event_handler);
+ GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_activate_mode);
+ GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_event);
GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_query);
- GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_pad_get_range);
+ GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_getrange);
GST_DEBUG_REGISTER_FUNCPTR (gst_base_src_fixate);
}
basesrc->priv = GST_BASE_SRC_GET_PRIVATE (basesrc);
basesrc->is_live = FALSE;
- basesrc->live_lock = g_mutex_new ();
- basesrc->live_cond = g_cond_new ();
+ g_mutex_init (&basesrc->live_lock);
+ g_cond_init (&basesrc->live_cond);
basesrc->num_buffers = DEFAULT_NUM_BUFFERS;
basesrc->num_buffers_left = -1;
pad = gst_pad_new_from_template (pad_template, "src");
GST_DEBUG_OBJECT (basesrc, "setting functions on src pad");
- gst_pad_set_activatepush_function (pad, gst_base_src_activate_push);
- gst_pad_set_activatepull_function (pad, gst_base_src_activate_pull);
- gst_pad_set_event_function (pad, gst_base_src_event_handler);
+ gst_pad_set_activatemode_function (pad, gst_base_src_activate_mode);
+ gst_pad_set_event_function (pad, gst_base_src_event);
gst_pad_set_query_function (pad, gst_base_src_query);
- gst_pad_set_getrange_function (pad, gst_base_src_pad_get_range);
+ gst_pad_set_getrange_function (pad, gst_base_src_getrange);
/* hold pointer to pad */
basesrc->srcpad = pad;
basesrc->priv->do_timestamp = DEFAULT_DO_TIMESTAMP;
g_atomic_int_set (&basesrc->priv->have_events, FALSE);
- GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_STARTED);
- GST_OBJECT_FLAG_SET (basesrc, GST_ELEMENT_IS_SOURCE);
+ basesrc->priv->start_result = GST_FLOW_FLUSHING;
+ GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_FLAG_STARTED);
+ GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_FLAG_STARTING);
+ GST_OBJECT_FLAG_SET (basesrc, GST_ELEMENT_FLAG_SOURCE);
GST_DEBUG_OBJECT (basesrc, "init done");
}
basesrc = GST_BASE_SRC (object);
- g_mutex_free (basesrc->live_lock);
- g_cond_free (basesrc->live_cond);
+ g_mutex_clear (&basesrc->live_lock);
+ g_cond_clear (&basesrc->live_cond);
event_p = &basesrc->pending_seek;
gst_event_replace (event_p, NULL);
* This function will block until a state change to PLAYING happens (in which
* case this function returns #GST_FLOW_OK) or the processing must be stopped due
* to a state change to READY or a FLUSH event (in which case this function
- * returns #GST_FLOW_WRONG_STATE).
+ * returns #GST_FLOW_FLUSHING).
*
* Since: 0.10.12
*
flushing:
{
GST_DEBUG_OBJECT (src, "we are flushing");
- return GST_FLOW_WRONG_STATE;
+ return GST_FLOW_FLUSHING;
}
}
}
/**
+ * gst_base_src_set_async:
+ * @src: base source instance
+ * @async: new async mode
+ *
+ * Configure async behaviour in @src, no state change will block. The open,
+ * close, start, stop, play and pause virtual methods will be executed in a
+ * different thread and are thus allowed to perform blocking operations. Any
+ * blocking operation should be unblocked with the unlock vmethod.
+ */
+void
+gst_base_src_set_async (GstBaseSrc * src, gboolean async)
+{
+ g_return_if_fail (GST_IS_BASE_SRC (src));
+
+ GST_OBJECT_LOCK (src);
+ src->priv->async = async;
+ GST_OBJECT_UNLOCK (src);
+}
+
+/**
+ * gst_base_src_is_async:
+ * @src: base source instance
+ *
+ * Get the current async behaviour of @src. See also gst_base_src_set_async().
+ *
+ * Returns: %TRUE if @src is operating in async mode.
+ */
+gboolean
+gst_base_src_is_async (GstBaseSrc * src)
+{
+ gboolean res;
+
+ g_return_val_if_fail (GST_IS_BASE_SRC (src), FALSE);
+
+ GST_OBJECT_LOCK (src);
+ res = src->priv->async;
+ GST_OBJECT_UNLOCK (src);
+
+ return res;
+}
+
+
+/**
* gst_base_src_query_latency:
* @src: the source
* @live: (out) (allow-none): if the source is live
return res;
}
+static gboolean
+gst_base_src_send_stream_start (GstBaseSrc * src)
+{
+ gboolean ret = TRUE;
+
+ if (src->priv->stream_start_pending) {
+ ret = gst_pad_push_event (src->srcpad, gst_event_new_stream_start ());
+ src->priv->stream_start_pending = FALSE;
+ }
+
+ return ret;
+}
+
/**
* gst_base_src_set_caps:
* @src: a #GstBaseSrc
bclass = GST_BASE_SRC_GET_CLASS (src);
+ gst_base_src_send_stream_start (src);
gst_pad_push_event (src->srcpad, gst_event_new_caps (caps));
if (bclass->set_caps)
return caps;
}
-static void
+static GstCaps *
gst_base_src_default_fixate (GstBaseSrc * bsrc, GstCaps * caps)
{
GST_DEBUG_OBJECT (bsrc, "using default caps fixate function");
- gst_caps_fixate (caps);
+ return gst_caps_fixate (caps);
}
-static void
+static GstCaps *
gst_base_src_fixate (GstBaseSrc * bsrc, GstCaps * caps)
{
GstBaseSrcClass *bclass;
bclass = GST_BASE_SRC_GET_CLASS (bsrc);
if (bclass->fixate)
- bclass->fixate (bsrc, caps);
+ caps = bclass->fixate (bsrc, caps);
+
+ return caps;
}
static gboolean
/* we can operate in getrange mode if the native format is bytes
* and we are seekable, this condition is set in the random_access
* flag and is set in the _start() method. */
- gst_query_set_scheduling (query, random_access, TRUE, FALSE, 1, -1, 1);
+ gst_query_set_scheduling (query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1, 0);
+ if (random_access)
+ gst_query_add_scheduling_mode (query, GST_PAD_MODE_PULL);
+ gst_query_add_scheduling_mode (query, GST_PAD_MODE_PUSH);
res = TRUE;
break;
bclass = GST_BASE_SRC_GET_CLASS (src);
if (bclass->get_caps) {
gst_query_parse_caps (query, &filter);
- caps = bclass->get_caps (src, filter);
- gst_query_set_caps_result (query, caps);
- gst_caps_unref (caps);
- res = TRUE;
+ if ((caps = bclass->get_caps (src, filter))) {
+ gst_query_set_caps_result (query, caps);
+ gst_caps_unref (caps);
+ res = TRUE;
+ } else {
+ res = FALSE;
+ }
} else
res = FALSE;
break;
}
static gboolean
-gst_base_src_query (GstPad * pad, GstQuery * query)
+gst_base_src_query (GstPad * pad, GstObject * parent, GstQuery * query)
{
GstBaseSrc *src;
GstBaseSrcClass *bclass;
gboolean result = FALSE;
- src = GST_BASE_SRC (gst_pad_get_parent (pad));
- if (G_UNLIKELY (src == NULL))
- return FALSE;
-
+ src = GST_BASE_SRC (parent);
bclass = GST_BASE_SRC_GET_CLASS (src);
if (bclass->query)
result = bclass->query (src, query);
- gst_object_unref (src);
-
return result;
}
if (priv->pool) {
ret = gst_buffer_pool_acquire_buffer (priv->pool, buffer, NULL);
} else if (size != -1) {
- *buffer = gst_buffer_new_allocate (priv->allocator, size, priv->alignment);
+ *buffer = gst_buffer_new_allocate (priv->allocator, size, &priv->params);
if (G_UNLIKELY (*buffer == NULL))
goto alloc_failed;
{
GstBaseSrcClass *bclass;
GstFlowReturn ret;
+ GstBuffer *res_buf;
bclass = GST_BASE_SRC_GET_CLASS (src);
if (G_UNLIKELY (!bclass->fill))
goto no_function;
- ret = bclass->alloc (src, offset, size, buffer);
- if (G_UNLIKELY (ret != GST_FLOW_OK))
- goto alloc_failed;
+ if (*buffer == NULL) {
+ /* downstream did not provide us with a buffer to fill, allocate one
+ * ourselves */
+ ret = bclass->alloc (src, offset, size, &res_buf);
+ if (G_UNLIKELY (ret != GST_FLOW_OK))
+ goto alloc_failed;
+ } else {
+ res_buf = *buffer;
+ }
if (G_LIKELY (size > 0)) {
/* only call fill when there is a size */
- ret = bclass->fill (src, offset, size, *buffer);
+ ret = bclass->fill (src, offset, size, res_buf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto not_ok;
}
+ *buffer = res_buf;
+
return GST_FLOW_OK;
/* ERRORS */
{
GST_DEBUG_OBJECT (src, "fill returned %d (%s)", ret,
gst_flow_get_name (ret));
- gst_buffer_unref (*buffer);
+ if (*buffer == NULL)
+ gst_buffer_unref (res_buf);
return ret;
}
}
gboolean started;
GST_OBJECT_LOCK (src->srcpad);
- if (GST_PAD_ACTIVATE_MODE (src->srcpad) == GST_PAD_ACTIVATE_PULL)
+ if (GST_PAD_MODE (src->srcpad) == GST_PAD_MODE_PULL)
goto wrong_mode;
- started = GST_PAD_ACTIVATE_MODE (src->srcpad) == GST_PAD_ACTIVATE_PUSH;
+ started = GST_PAD_MODE (src->srcpad) == GST_PAD_MODE_PUSH;
GST_OBJECT_UNLOCK (src->srcpad);
if (started) {
result = TRUE;
break;
}
+ case GST_EVENT_RECONFIGURE:
+ result = TRUE;
+ break;
+ case GST_EVENT_LATENCY:
+ result = TRUE;
+ break;
default:
result = FALSE;
break;
}
static gboolean
-gst_base_src_event_handler (GstPad * pad, GstEvent * event)
+gst_base_src_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
GstBaseSrc *src;
GstBaseSrcClass *bclass;
gboolean result = FALSE;
- src = GST_BASE_SRC (gst_pad_get_parent (pad));
- if (G_UNLIKELY (src == NULL)) {
- gst_event_unref (event);
- return FALSE;
- }
-
+ src = GST_BASE_SRC (parent);
bclass = GST_BASE_SRC_GET_CLASS (src);
if (bclass->event) {
done:
gst_event_unref (event);
- gst_object_unref (src);
return result;
GstFlowReturn ret;
GstBaseSrcClass *bclass;
GstClockReturn status;
+ GstBuffer *res_buf;
bclass = GST_BASE_SRC_GET_CLASS (src);
}
}
- if (G_UNLIKELY (!GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED)))
+ if (G_UNLIKELY (!GST_BASE_SRC_IS_STARTED (src)
+ && !GST_BASE_SRC_IS_STARTING (src)))
goto not_started;
if (G_UNLIKELY (!bclass->create))
"calling create offset %" G_GUINT64_FORMAT " length %u, time %"
G_GINT64_FORMAT, offset, length, src->segment.time);
- ret = bclass->create (src, offset, length, buf);
+ res_buf = *buf;
+
+ ret = bclass->create (src, offset, length, &res_buf);
/* The create function could be unlocked because we have a pending EOS. It's
* possible that we have a valid buffer from create that we need to
* discard when the create function returned _OK. */
if (G_UNLIKELY (g_atomic_int_get (&src->priv->pending_eos))) {
if (ret == GST_FLOW_OK) {
- gst_buffer_unref (*buf);
- *buf = NULL;
+ if (*buf == NULL)
+ gst_buffer_unref (res_buf);
}
goto eos;
}
/* no timestamp set and we are at offset 0, we can timestamp with 0 */
if (offset == 0 && src->segment.time == 0
- && GST_BUFFER_TIMESTAMP (*buf) == -1 && !src->is_live) {
- *buf = gst_buffer_make_writable (*buf);
- GST_BUFFER_TIMESTAMP (*buf) = 0;
+ && GST_BUFFER_TIMESTAMP (res_buf) == -1 && !src->is_live) {
+ GST_DEBUG_OBJECT (src, "setting first timestamp to 0");
+ res_buf = gst_buffer_make_writable (res_buf);
+ GST_BUFFER_TIMESTAMP (res_buf) = 0;
}
/* now sync before pushing the buffer */
- status = gst_base_src_do_sync (src, *buf);
+ status = gst_base_src_do_sync (src, res_buf);
/* waiting for the clock could have made us flushing */
if (G_UNLIKELY (src->priv->flushing))
/* this case is triggered when we were waiting for the clock and
* it got unlocked because we did a state change. In any case, get rid of
* the buffer. */
- gst_buffer_unref (*buf);
- *buf = NULL;
+ if (*buf == NULL)
+ gst_buffer_unref (res_buf);
+
if (!src->live_running) {
/* We return WRONG_STATE when we are not running to stop the dataflow also
* get rid of the produced buffer. */
GST_DEBUG_OBJECT (src,
"clock was unscheduled (%d), returning WRONG_STATE", status);
- ret = GST_FLOW_WRONG_STATE;
+ ret = GST_FLOW_FLUSHING;
} else {
/* If we are running when this happens, we quickly switched between
* pause and playing. We try to produce a new buffer */
GST_ELEMENT_ERROR (src, CORE, CLOCK,
(_("Internal clock error.")),
("clock returned unexpected return value %d", status));
- gst_buffer_unref (*buf);
- *buf = NULL;
+ if (*buf == NULL)
+ gst_buffer_unref (res_buf);
ret = GST_FLOW_ERROR;
break;
}
+ if (G_LIKELY (ret == GST_FLOW_OK))
+ *buf = res_buf;
+
return ret;
/* ERROR */
not_started:
{
GST_DEBUG_OBJECT (src, "getrange but not started");
- return GST_FLOW_WRONG_STATE;
+ return GST_FLOW_FLUSHING;
}
no_function:
{
flushing:
{
GST_DEBUG_OBJECT (src, "we are flushing");
- gst_buffer_unref (*buf);
- *buf = NULL;
- return GST_FLOW_WRONG_STATE;
+ if (*buf == NULL)
+ gst_buffer_unref (res_buf);
+ return GST_FLOW_FLUSHING;
}
eos:
{
}
static GstFlowReturn
-gst_base_src_pad_get_range (GstPad * pad, guint64 offset, guint length,
- GstBuffer ** buf)
+gst_base_src_getrange (GstPad * pad, GstObject * parent, guint64 offset,
+ guint length, GstBuffer ** buf)
{
GstBaseSrc *src;
GstFlowReturn res;
- src = GST_BASE_SRC_CAST (gst_object_ref (GST_OBJECT_PARENT (pad)));
+ src = GST_BASE_SRC_CAST (parent);
GST_LIVE_LOCK (src);
if (G_UNLIKELY (src->priv->flushing))
done:
GST_LIVE_UNLOCK (src);
- gst_object_unref (src);
-
return res;
/* ERRORS */
flushing:
{
GST_DEBUG_OBJECT (src, "we are flushing");
- res = GST_FLOW_WRONG_STATE;
+ res = GST_FLOW_FLUSHING;
goto done;
}
}
gst_base_src_is_random_access (GstBaseSrc * src)
{
/* we need to start the basesrc to check random access */
- if (!GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_STARTED)) {
+ if (!GST_BASE_SRC_IS_STARTED (src)) {
GST_LOG_OBJECT (src, "doing start/stop to check get_range support");
- if (G_LIKELY (gst_base_src_start (src)))
+ if (G_LIKELY (gst_base_src_start (src))) {
+ if (gst_base_src_start_wait (src) != GST_FLOW_OK)
+ goto start_failed;
gst_base_src_stop (src);
+ }
}
return src->random_access;
+
+ /* ERRORS */
+start_failed:
+ {
+ GST_DEBUG_OBJECT (src, "failed to start");
+ return FALSE;
+ }
}
static void
src = GST_BASE_SRC (GST_OBJECT_PARENT (pad));
+ gst_base_src_send_stream_start (src);
+
/* check if we need to renegotiate */
if (gst_pad_check_reconfigure (pad)) {
if (!gst_base_src_negotiate (src))
- GST_DEBUG_OBJECT (src, "Failed to renegotiate");
+ goto not_negotiated;
}
GST_LIVE_LOCK (src);
}
if (G_UNLIKELY (src->priv->discont)) {
+ GST_INFO_OBJECT (src, "marking pending DISCONT");
buf = gst_buffer_make_writable (buf);
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
src->priv->discont = FALSE;
return;
/* special cases */
+not_negotiated:
+ {
+ GST_DEBUG_OBJECT (src, "Failed to renegotiate");
+ ret = GST_FLOW_NOT_NEGOTIATED;
+ goto pause;
+ }
flushing:
{
GST_DEBUG_OBJECT (src, "we are flushing");
GST_LIVE_UNLOCK (src);
- ret = GST_FLOW_WRONG_STATE;
+ ret = GST_FLOW_FLUSHING;
goto pause;
}
pause:
static gboolean
gst_base_src_set_allocation (GstBaseSrc * basesrc, GstBufferPool * pool,
- const GstAllocator * allocator, guint prefix, guint alignment)
+ GstAllocator * allocator, GstAllocationParams * params)
{
+ GstAllocator *oldalloc;
GstBufferPool *oldpool;
GstBaseSrcPrivate *priv = basesrc->priv;
oldpool = priv->pool;
priv->pool = pool;
+ oldalloc = priv->allocator;
priv->allocator = allocator;
- priv->prefix = prefix;
- priv->alignment = alignment;
+ if (params)
+ priv->params = *params;
+ else
+ gst_allocation_params_init (&priv->params);
GST_OBJECT_UNLOCK (basesrc);
if (oldpool) {
}
gst_object_unref (oldpool);
}
+ if (oldalloc) {
+ gst_allocator_unref (oldalloc);
+ }
return TRUE;
/* ERRORS */
gboolean result = TRUE;
GstQuery *query;
GstBufferPool *pool = NULL;
- const GstAllocator *allocator = NULL;
- guint size, min, max, prefix, alignment;
+ GstAllocator *allocator = NULL;
+ guint size, min, max;
+ GstAllocationParams params;
bclass = GST_BASE_SRC_GET_CLASS (basesrc);
GST_DEBUG_OBJECT (basesrc, "ALLOCATION (%d) params: %" GST_PTR_FORMAT, result,
query);
- gst_query_parse_allocation_params (query, &size, &min, &max, &prefix,
- &alignment, &pool);
- if (size == 0) {
- const gchar *mem = NULL;
+ if (gst_query_get_n_allocation_params (query) > 0) {
+ /* try the allocator */
+ gst_query_parse_nth_allocation_param (query, 0, &allocator, ¶ms);
+ } else {
+ allocator = NULL;
+ gst_allocation_params_init (¶ms);
+ }
+
+ if (gst_query_get_n_allocation_pools (query) > 0) {
+ gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max);
- /* no size, we have variable size buffers */
- if (gst_query_get_n_allocation_memories (query) > 0) {
- mem = gst_query_parse_nth_allocation_memory (query, 0);
+ if (pool == NULL) {
+ /* no pool, just parameters, we can make our own */
+ GST_DEBUG_OBJECT (basesrc, "no pool, making new pool");
+ pool = gst_buffer_pool_new ();
}
- GST_DEBUG_OBJECT (basesrc, "0 size, getting allocator %s",
- GST_STR_NULL (mem));
- allocator = gst_allocator_find (mem);
- } else if (pool == NULL) {
- /* fixed size, we can use a bufferpool */
- GstStructure *config;
+ } else {
+ pool = NULL;
+ size = min = max = 0;
+ }
- /* we did not get a pool, make one ourselves then */
- pool = gst_buffer_pool_new ();
- GST_DEBUG_OBJECT (basesrc, "no pool, making new pool");
+ /* now configure */
+ if (pool) {
+ GstStructure *config;
config = gst_buffer_pool_get_config (pool);
- gst_buffer_pool_config_set (config, caps, size, min, max, prefix,
- alignment);
+ gst_buffer_pool_config_set_params (config, caps, size, min, max);
+ gst_buffer_pool_config_set_allocator (config, allocator, ¶ms);
gst_buffer_pool_set_config (pool, config);
}
- gst_query_unref (query);
+ result = gst_base_src_set_allocation (basesrc, pool, allocator, ¶ms);
- result =
- gst_base_src_set_allocation (basesrc, pool, allocator, prefix, alignment);
+ gst_query_unref (query);
return result;
* nego is not needed */
result = TRUE;
} else {
- caps = gst_caps_make_writable (caps);
- gst_base_src_fixate (basesrc, caps);
+ caps = gst_base_src_fixate (basesrc, caps);
GST_DEBUG_OBJECT (basesrc, "fixated to: %" GST_PTR_FORMAT, caps);
if (gst_caps_is_fixed (caps)) {
/* yay, fixed caps, use those then, it's possible that the subclass does
}
gst_caps_unref (caps);
} else {
+ if (caps)
+ gst_caps_unref (caps);
GST_DEBUG_OBJECT (basesrc, "no common caps");
}
return result;
gst_base_src_start (GstBaseSrc * basesrc)
{
GstBaseSrcClass *bclass;
- gboolean result, have_size;
- guint64 size;
- gboolean seekable;
- GstFormat format;
-
- if (GST_OBJECT_FLAG_IS_SET (basesrc, GST_BASE_SRC_STARTED))
- return TRUE;
+ gboolean result;
- GST_DEBUG_OBJECT (basesrc, "starting source");
+ GST_LIVE_LOCK (basesrc);
+ if (GST_BASE_SRC_IS_STARTING (basesrc))
+ goto was_starting;
+ if (GST_BASE_SRC_IS_STARTED (basesrc))
+ goto was_started;
+ basesrc->priv->start_result = GST_FLOW_FLUSHING;
+ GST_OBJECT_FLAG_SET (basesrc, GST_BASE_SRC_FLAG_STARTING);
basesrc->num_buffers_left = basesrc->num_buffers;
-
+ basesrc->running = FALSE;
+ basesrc->priv->segment_pending = FALSE;
GST_OBJECT_LOCK (basesrc);
gst_segment_init (&basesrc->segment, basesrc->segment.format);
GST_OBJECT_UNLOCK (basesrc);
-
- basesrc->running = FALSE;
- basesrc->priv->segment_pending = FALSE;
+ GST_LIVE_UNLOCK (basesrc);
bclass = GST_BASE_SRC_GET_CLASS (basesrc);
if (bclass->start)
if (!result)
goto could_not_start;
- GST_OBJECT_FLAG_SET (basesrc, GST_BASE_SRC_STARTED);
+ if (!gst_base_src_is_async (basesrc))
+ gst_base_src_start_complete (basesrc, GST_FLOW_OK);
+
+ return result;
+ /* ERROR */
+was_starting:
+ {
+ GST_DEBUG_OBJECT (basesrc, "was starting");
+ GST_LIVE_UNLOCK (basesrc);
+ return TRUE;
+ }
+was_started:
+ {
+ GST_DEBUG_OBJECT (basesrc, "was started");
+ GST_LIVE_UNLOCK (basesrc);
+ return TRUE;
+ }
+could_not_start:
+ {
+ GST_DEBUG_OBJECT (basesrc, "could not start");
+ /* subclass is supposed to post a message. We don't have to call _stop. */
+ gst_base_src_start_complete (basesrc, GST_FLOW_ERROR);
+ return FALSE;
+ }
+}
+
+/**
+ * gst_base_src_start_complete:
+ * @src: base source instance
+ * @ret: a #GstFlowReturn
+ *
+ * Complete an asynchronous start operation. When the subclass overrides the
+ * start method, it should call gst_base_src_start_complete() when the start
+ * operation completes either from the same thread or from an asynchronous
+ * helper thread.
+ */
+void
+gst_base_src_start_complete (GstBaseSrc * basesrc, GstFlowReturn ret)
+{
+ gboolean have_size;
+ guint64 size;
+ gboolean seekable;
+ GstFormat format;
+ GstPadMode mode;
+ GstEvent *event;
+
+ if (ret != GST_FLOW_OK)
+ goto error;
+
+ GST_DEBUG_OBJECT (basesrc, "starting source");
format = basesrc->segment.format;
/* figure out the size */
have_size = FALSE;
size = -1;
if (format == GST_FORMAT_BYTES) {
+ GstBaseSrcClass *bclass = GST_BASE_SRC_GET_CLASS (basesrc);
+
if (bclass->get_size) {
if (!(have_size = bclass->get_size (basesrc, &size)))
size = -1;
GST_DEBUG_OBJECT (basesrc, "is random_access: %d", basesrc->random_access);
+ /* stop flushing now but for live sources, still block in the LIVE lock when
+ * we are not yet PLAYING */
+ gst_base_src_set_flushing (basesrc, FALSE, FALSE, FALSE, NULL);
+
gst_pad_mark_reconfigure (GST_BASE_SRC_PAD (basesrc));
- return TRUE;
+ GST_OBJECT_LOCK (basesrc->srcpad);
+ mode = GST_PAD_MODE (basesrc->srcpad);
+ GST_OBJECT_UNLOCK (basesrc->srcpad);
- /* ERROR */
-could_not_start:
+ if (mode == GST_PAD_MODE_PUSH) {
+ /* do initial seek, which will start the task */
+ GST_OBJECT_LOCK (basesrc);
+ event = basesrc->pending_seek;
+ basesrc->pending_seek = NULL;
+ GST_OBJECT_UNLOCK (basesrc);
+
+ /* no need to unlock anything, the task is certainly
+ * not running here. The perform seek code will start the task when
+ * finished. */
+ if (G_UNLIKELY (!gst_base_src_perform_seek (basesrc, event, FALSE)))
+ goto seek_failed;
+
+ if (event)
+ gst_event_unref (event);
+ } else {
+ /* if not random_access, we cannot operate in pull mode for now */
+ if (G_UNLIKELY (!basesrc->random_access))
+ goto no_get_range;
+ }
+
+ GST_LIVE_LOCK (basesrc);
+ GST_OBJECT_FLAG_SET (basesrc, GST_BASE_SRC_FLAG_STARTED);
+ GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_FLAG_STARTING);
+ basesrc->priv->start_result = ret;
+ GST_LIVE_SIGNAL (basesrc);
+ GST_LIVE_UNLOCK (basesrc);
+
+ return;
+
+seek_failed:
{
- GST_DEBUG_OBJECT (basesrc, "could not start");
- /* subclass is supposed to post a message. We don't have to call _stop. */
- return FALSE;
+ GST_ERROR_OBJECT (basesrc, "Failed to perform initial seek");
+ gst_base_src_set_flushing (basesrc, TRUE, FALSE, TRUE, NULL);
+ if (event)
+ gst_event_unref (event);
+ ret = GST_FLOW_ERROR;
+ goto error;
+ }
+no_get_range:
+ {
+ gst_base_src_set_flushing (basesrc, TRUE, FALSE, TRUE, NULL);
+ GST_ERROR_OBJECT (basesrc, "Cannot operate in pull mode, stopping");
+ ret = GST_FLOW_ERROR;
+ goto error;
+ }
+error:
+ {
+ GST_LIVE_LOCK (basesrc);
+ basesrc->priv->start_result = ret;
+ GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_FLAG_STARTING);
+ GST_LIVE_SIGNAL (basesrc);
+ GST_LIVE_UNLOCK (basesrc);
+ return;
+ }
+}
+
+/**
+ * gst_base_src_start_wait:
+ * @src: base source instance
+ * @ret: a #GstFlowReturn
+ *
+ * Wait until the start operation completes.
+ *
+ * Returns: a #GstFlowReturn.
+ */
+GstFlowReturn
+gst_base_src_start_wait (GstBaseSrc * basesrc)
+{
+ GstFlowReturn result;
+
+ GST_LIVE_LOCK (basesrc);
+ if (G_UNLIKELY (basesrc->priv->flushing))
+ goto flushing;
+
+ while (GST_BASE_SRC_IS_STARTING (basesrc)) {
+ GST_LIVE_WAIT (basesrc);
+ if (G_UNLIKELY (basesrc->priv->flushing))
+ goto flushing;
+ }
+ result = basesrc->priv->start_result;
+ GST_LIVE_UNLOCK (basesrc);
+
+ return result;
+
+ /* ERRORS */
+flushing:
+ {
+ GST_DEBUG_OBJECT (basesrc, "we are flushing");
+ GST_LIVE_UNLOCK (basesrc);
+ return GST_FLOW_FLUSHING;
}
}
GstBaseSrcClass *bclass;
gboolean result = TRUE;
- if (!GST_OBJECT_FLAG_IS_SET (basesrc, GST_BASE_SRC_STARTED))
- return TRUE;
-
GST_DEBUG_OBJECT (basesrc, "stopping source");
+ /* flush all */
+ gst_base_src_set_flushing (basesrc, TRUE, FALSE, TRUE, NULL);
+ /* stop the task */
+ gst_pad_stop_task (basesrc->srcpad);
+
+ GST_LIVE_LOCK (basesrc);
+ if (!GST_BASE_SRC_IS_STARTED (basesrc) && !GST_BASE_SRC_IS_STARTING (basesrc))
+ goto was_stopped;
+
+ GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_FLAG_STARTING);
+ GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_FLAG_STARTED);
+ basesrc->priv->start_result = GST_FLOW_FLUSHING;
+ GST_LIVE_SIGNAL (basesrc);
+ GST_LIVE_UNLOCK (basesrc);
+
bclass = GST_BASE_SRC_GET_CLASS (basesrc);
if (bclass->stop)
result = bclass->stop (basesrc);
- gst_base_src_set_allocation (basesrc, NULL, NULL, 0, 0);
-
- if (result)
- GST_OBJECT_FLAG_UNSET (basesrc, GST_BASE_SRC_STARTED);
+ gst_base_src_set_allocation (basesrc, NULL, NULL, NULL);
return result;
+
+was_stopped:
+ {
+ GST_DEBUG_OBJECT (basesrc, "was started");
+ GST_LIVE_UNLOCK (basesrc);
+ return TRUE;
+ }
}
/* start or stop flushing dataprocessing
/* have to restart the task in case it stopped because of the unlock when
* we went to PAUSED. Only do this if we operating in push mode. */
GST_OBJECT_LOCK (basesrc->srcpad);
- start = (GST_PAD_ACTIVATE_MODE (basesrc->srcpad) == GST_PAD_ACTIVATE_PUSH);
+ start = (GST_PAD_MODE (basesrc->srcpad) == GST_PAD_MODE_PUSH);
GST_OBJECT_UNLOCK (basesrc->srcpad);
if (start)
gst_pad_start_task (basesrc->srcpad, (GstTaskFunction) gst_base_src_loop,
}
static gboolean
-gst_base_src_activate_push (GstPad * pad, gboolean active)
+gst_base_src_activate_push (GstPad * pad, GstObject * parent, gboolean active)
{
GstBaseSrc *basesrc;
- GstEvent *event;
- basesrc = GST_BASE_SRC (GST_OBJECT_PARENT (pad));
+ basesrc = GST_BASE_SRC (parent);
/* prepare subclass first */
if (active) {
if (G_UNLIKELY (!gst_base_src_start (basesrc)))
goto error_start;
-
- basesrc->priv->discont = TRUE;
- gst_base_src_set_flushing (basesrc, FALSE, FALSE, FALSE, NULL);
-
- /* do initial seek, which will start the task */
- GST_OBJECT_LOCK (basesrc);
- event = basesrc->pending_seek;
- basesrc->pending_seek = NULL;
- GST_OBJECT_UNLOCK (basesrc);
-
- /* no need to unlock anything, the task is certainly
- * not running here. The perform seek code will start the task when
- * finished. */
- if (G_UNLIKELY (!gst_base_src_perform_seek (basesrc, event, FALSE)))
- goto seek_failed;
-
- if (event)
- gst_event_unref (event);
} else {
GST_DEBUG_OBJECT (basesrc, "Deactivating in push mode");
- /* flush all */
- gst_base_src_set_flushing (basesrc, TRUE, FALSE, TRUE, NULL);
- /* stop the task */
- gst_pad_stop_task (pad);
/* now we can stop the source */
if (G_UNLIKELY (!gst_base_src_stop (basesrc)))
goto error_stop;
GST_WARNING_OBJECT (basesrc, "Failed to start in push mode");
return FALSE;
}
-seek_failed:
- {
- GST_ERROR_OBJECT (basesrc, "Failed to perform initial seek");
- /* flush all */
- gst_base_src_set_flushing (basesrc, TRUE, FALSE, TRUE, NULL);
- /* stop the task */
- gst_pad_stop_task (pad);
- /* Stop the basesrc */
- gst_base_src_stop (basesrc);
- if (event)
- gst_event_unref (event);
- return FALSE;
- }
error_stop:
{
GST_DEBUG_OBJECT (basesrc, "Failed to stop in push mode");
}
static gboolean
-gst_base_src_activate_pull (GstPad * pad, gboolean active)
+gst_base_src_activate_pull (GstPad * pad, GstObject * parent, gboolean active)
{
GstBaseSrc *basesrc;
- basesrc = GST_BASE_SRC (GST_OBJECT_PARENT (pad));
+ basesrc = GST_BASE_SRC (parent);
/* prepare subclass first */
if (active) {
GST_DEBUG_OBJECT (basesrc, "Activating in pull mode");
if (G_UNLIKELY (!gst_base_src_start (basesrc)))
goto error_start;
-
- /* if not random_access, we cannot operate in pull mode for now */
- if (G_UNLIKELY (!gst_base_src_is_random_access (basesrc)))
- goto no_get_range;
-
- /* stop flushing now but for live sources, still block in the LIVE lock when
- * we are not yet PLAYING */
- gst_base_src_set_flushing (basesrc, FALSE, FALSE, FALSE, NULL);
} else {
GST_DEBUG_OBJECT (basesrc, "Deactivating in pull mode");
- /* flush all, there is no task to stop */
- gst_base_src_set_flushing (basesrc, TRUE, FALSE, TRUE, NULL);
-
if (G_UNLIKELY (!gst_base_src_stop (basesrc)))
goto error_stop;
}
GST_ERROR_OBJECT (basesrc, "Failed to start in pull mode");
return FALSE;
}
-no_get_range:
- {
- GST_ERROR_OBJECT (basesrc, "Cannot operate in pull mode, stopping");
- gst_base_src_stop (basesrc);
- return FALSE;
- }
error_stop:
{
GST_ERROR_OBJECT (basesrc, "Failed to stop in pull mode");
}
}
+static gboolean
+gst_base_src_activate_mode (GstPad * pad, GstObject * parent,
+ GstPadMode mode, gboolean active)
+{
+ gboolean res;
+
+ switch (mode) {
+ case GST_PAD_MODE_PULL:
+ res = gst_base_src_activate_pull (pad, parent, active);
+ break;
+ case GST_PAD_MODE_PUSH:
+ res = gst_base_src_activate_push (pad, parent, active);
+ break;
+ default:
+ GST_LOG_OBJECT (pad, "unknown activation mode %d", mode);
+ res = FALSE;
+ break;
+ }
+ return res;
+}
+
+
static GstStateChangeReturn
gst_base_src_change_state (GstElement * element, GstStateChange transition)
{
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
+ basesrc->priv->stream_start_pending = TRUE;
no_preroll = gst_base_src_is_live (basesrc);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
{
- GstEvent **event_p;
-
/* we don't need to unblock anything here, the pad deactivation code
* already did this */
g_atomic_int_set (&basesrc->priv->pending_eos, FALSE);
- event_p = &basesrc->pending_seek;
- gst_event_replace (event_p, NULL);
+ gst_event_replace (&basesrc->pending_seek, NULL);
+ basesrc->priv->stream_start_pending = FALSE;
break;
}
case GST_STATE_CHANGE_READY_TO_NULL:
projects / platform / upstream / gstreamer.git / blobdiff