mirror of
git://source.winehq.org/git/wine.git
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winegstreamer: Replace source pad interface with GstAppSrc.
Signed-off-by: Derek Lesho <dlesho@codeweavers.com> Signed-off-by: Zebediah Figura <zfigura@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Derek Lesho
Alexandre Julliard
parent
8b7390f80d
commit
1aa359a100
1 changed files with 122 additions and 313 deletions
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@ -33,6 +33,7 @@
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#include <gst/gst.h>
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#include <gst/video/video.h>
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#include <gst/audio/audio.h>
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#include <gst/app/gstappsrc.h>
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/* GStreamer callbacks may be called on threads not created by Wine, and
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* therefore cannot access the Wine TEB. This means that we must use GStreamer
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@ -49,28 +50,20 @@ struct wg_parser
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struct wg_parser_stream **streams;
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unsigned int stream_count;
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GstElement *container, *decodebin;
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GstElement *container, *appsrc, *decodebin;
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GstBus *bus;
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GstPad *my_src, *their_sink;
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guint64 file_size, start_offset, next_offset, stop_offset;
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guint64 next_pull_offset;
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pthread_t push_thread;
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pthread_mutex_t mutex;
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pthread_cond_t init_cond;
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bool no_more_pads, has_duration, error;
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pthread_cond_t read_cond, read_done_cond;
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pthread_cond_t read_cond;
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struct
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{
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void *data;
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uint64_t offset;
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uint32_t size;
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bool done;
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bool ret;
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bool pending;
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} read_request;
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bool flushing, sink_connected;
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@ -522,7 +515,7 @@ static bool CDECL wg_parser_get_next_read_offset(struct wg_parser *parser,
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{
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pthread_mutex_lock(&parser->mutex);
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while (parser->sink_connected && !parser->read_request.data)
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while (parser->sink_connected && !parser->read_request.pending)
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pthread_cond_wait(&parser->read_cond, &parser->mutex);
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if (!parser->sink_connected)
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@ -541,15 +534,69 @@ static bool CDECL wg_parser_get_next_read_offset(struct wg_parser *parser,
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static void CDECL wg_parser_push_data(struct wg_parser *parser,
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const void *data, uint32_t size)
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{
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GstMessage *message;
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GstFlowReturn ret;
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GstBuffer *buffer;
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GError *error;
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if (!data)
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{
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pthread_mutex_lock(&parser->mutex);
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if (parser->sink_connected)
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{
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error = g_error_new(G_FILE_ERROR, G_FILE_ERROR_FAILED, "WG-Parser client failed to read data at offset %" G_GUINT64_FORMAT, parser->read_request.offset);
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message = gst_message_new_error(NULL, error, "");
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gst_bus_post(parser->bus, message);
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parser->read_request.pending = false;
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}
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pthread_mutex_unlock(&parser->mutex);
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return;
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}
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if (!size)
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{
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pthread_mutex_lock(&parser->mutex);
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if (parser->sink_connected)
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g_signal_emit_by_name(G_OBJECT(parser->appsrc), "end-of-stream", &ret);
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parser->read_request.pending = false;
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pthread_mutex_unlock(&parser->mutex);
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return;
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}
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/* We will always perform an extra blit here. We can avoid this in some
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* cases by wrapping a client-allocated buffer using
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* gst_buffer_new_wrapped(). However, releasing the memory is non-trivial,
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* since GStreamer will hold onto a reference for an arbitrarily long
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* period of time. Until there's evidence to suggest that the blit causes a
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* performance problem, leave it alone. */
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buffer = gst_buffer_new_and_alloc(size);
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gst_buffer_fill(buffer, 0, data, size);
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pthread_mutex_lock(&parser->mutex);
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parser->read_request.size = size;
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parser->read_request.done = true;
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parser->read_request.ret = !!data;
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if (data)
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memcpy(parser->read_request.data, data, size);
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parser->read_request.data = NULL;
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if (!parser->sink_connected)
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{
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pthread_mutex_unlock(&parser->mutex);
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gst_buffer_unref(buffer);
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return;
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}
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assert(parser->read_request.pending);
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GST_BUFFER_OFFSET(buffer) = parser->read_request.offset;
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g_signal_emit_by_name(G_OBJECT(parser->appsrc), "push-buffer", buffer, &ret);
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/* In random-access mode, GST_FLOW_EOS shouldn't be returned. */
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assert(ret == GST_FLOW_OK || ret == GST_FLOW_FLUSHING);
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if (ret == GST_FLOW_OK)
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parser->read_request.offset += size;
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parser->read_request.pending = false;
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pthread_mutex_unlock(&parser->mutex);
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pthread_cond_signal(&parser->read_done_cond);
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}
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static void CDECL wg_parser_set_unlimited_buffering(struct wg_parser *parser)
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@ -1204,196 +1251,56 @@ static void pad_removed_cb(GstElement *element, GstPad *pad, gpointer user)
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g_free(name);
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}
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static GstFlowReturn src_getrange_cb(GstPad *pad, GstObject *parent,
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guint64 offset, guint size, GstBuffer **buffer)
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static void src_need_data(GstElement *appsrc, guint length, gpointer user)
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{
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struct wg_parser *parser = gst_pad_get_element_private(pad);
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GstBuffer *new_buffer = NULL;
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GstMapInfo map_info;
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bool ret;
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GST_LOG("pad %p, offset %" G_GINT64_MODIFIER "u, length %u, buffer %p.", pad, offset, size, *buffer);
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if (offset == GST_BUFFER_OFFSET_NONE)
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offset = parser->next_pull_offset;
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parser->next_pull_offset = offset + size;
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if (!*buffer)
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*buffer = new_buffer = gst_buffer_new_and_alloc(size);
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gst_buffer_map(*buffer, &map_info, GST_MAP_WRITE);
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struct wg_parser *parser = user;
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guint64 queued_bytes;
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pthread_mutex_lock(&parser->mutex);
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assert(!parser->read_request.data);
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parser->read_request.data = map_info.data;
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parser->read_request.offset = offset;
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parser->read_request.size = size;
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parser->read_request.done = false;
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/* As of GStreamer 1.18, appsrc suffers from a race condition. When in
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* random access mode (and when underlyingly in pull mode), appsrc may
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* spuriously send multiple requests for the same offset and length. If it
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* receives the same buffer twice (or consecutive buffers), it will blindly
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* queue them and satisfy subsequent getrange requests from downstream
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* elements with the wrong buffers.
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*
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* Internally, this function is called inside of a loop, which also pops
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* buffers from the internal queue. Accordingly we can safely treat this
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* request as spurious by checking if we have already sent data; since the
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* data is consumed by this thread it will not have been consumed yet.
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*
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* The bug is documented in greater detail here:
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*
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* https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/issues/937
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*/
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g_object_get(G_OBJECT(appsrc), "current-level-bytes", &queued_bytes, NULL);
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if (queued_bytes)
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{
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pthread_mutex_unlock(&parser->mutex);
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return;
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}
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parser->read_request.pending = true;
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parser->read_request.size = length;
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pthread_cond_signal(&parser->read_cond);
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/* Note that we don't unblock this wait on GST_EVENT_FLUSH_START. We expect
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* the upstream pin to flush if necessary. We should never be blocked on
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* read_thread() not running. */
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pthread_mutex_unlock(&parser->mutex);
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}
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while (!parser->read_request.done)
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pthread_cond_wait(&parser->read_done_cond, &parser->mutex);
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static gboolean src_seek_data(GstElement *appsrc, guint64 offset, gpointer user)
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{
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struct wg_parser *parser = user;
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ret = parser->read_request.ret;
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gst_buffer_set_size(*buffer, parser->read_request.size);
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pthread_mutex_lock(&parser->mutex);
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assert(!parser->read_request.pending);
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parser->read_request.offset = offset;
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pthread_mutex_unlock(&parser->mutex);
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gst_buffer_unmap(*buffer, &map_info);
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GST_LOG("Request returned %d.", ret);
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if ((!ret || !size) && new_buffer)
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gst_buffer_unref(new_buffer);
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if (ret)
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return size ? GST_FLOW_OK : GST_FLOW_EOS;
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return GST_FLOW_ERROR;
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}
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static gboolean src_query_cb(GstPad *pad, GstObject *parent, GstQuery *query)
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{
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struct wg_parser *parser = gst_pad_get_element_private(pad);
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GstFormat format;
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GST_LOG("parser %p, type %s.", parser, GST_QUERY_TYPE_NAME(query));
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switch (GST_QUERY_TYPE(query))
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{
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case GST_QUERY_DURATION:
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gst_query_parse_duration(query, &format, NULL);
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if (format == GST_FORMAT_PERCENT)
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{
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gst_query_set_duration(query, GST_FORMAT_PERCENT, GST_FORMAT_PERCENT_MAX);
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return TRUE;
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}
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else if (format == GST_FORMAT_BYTES)
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{
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gst_query_set_duration(query, GST_FORMAT_BYTES, parser->file_size);
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return TRUE;
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}
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return FALSE;
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case GST_QUERY_SEEKING:
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gst_query_parse_seeking (query, &format, NULL, NULL, NULL);
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if (format != GST_FORMAT_BYTES)
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{
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GST_WARNING("Cannot seek using format \"%s\".", gst_format_get_name(format));
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return FALSE;
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}
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gst_query_set_seeking(query, GST_FORMAT_BYTES, 1, 0, parser->file_size);
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return TRUE;
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case GST_QUERY_SCHEDULING:
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gst_query_set_scheduling(query, GST_SCHEDULING_FLAG_SEEKABLE, 1, -1, 0);
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gst_query_add_scheduling_mode(query, GST_PAD_MODE_PUSH);
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gst_query_add_scheduling_mode(query, GST_PAD_MODE_PULL);
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return TRUE;
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default:
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GST_WARNING("Unhandled query type %s.", GST_QUERY_TYPE_NAME(query));
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return FALSE;
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}
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}
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static void *push_data(void *arg)
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{
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struct wg_parser *parser = arg;
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GstBuffer *buffer;
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guint max_size;
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GST_DEBUG("Starting push thread.");
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if (!(buffer = gst_buffer_new_allocate(NULL, 16384, NULL)))
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{
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GST_ERROR("Failed to allocate memory.");
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return NULL;
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}
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max_size = parser->stop_offset ? parser->stop_offset : parser->file_size;
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for (;;)
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{
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ULONG size;
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int ret;
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if (parser->next_offset >= max_size)
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break;
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size = min(16384, max_size - parser->next_offset);
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if ((ret = src_getrange_cb(parser->my_src, NULL, parser->next_offset, size, &buffer)) < 0)
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{
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GST_ERROR("Failed to read data, ret %s.", gst_flow_get_name(ret));
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break;
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}
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parser->next_offset += size;
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buffer->duration = buffer->pts = -1;
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if ((ret = gst_pad_push(parser->my_src, buffer)) < 0)
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{
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GST_ERROR("Failed to push data, ret %s.", gst_flow_get_name(ret));
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break;
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}
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}
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gst_buffer_unref(buffer);
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gst_pad_push_event(parser->my_src, gst_event_new_eos());
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GST_DEBUG("Stopping push thread.");
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return NULL;
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}
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static gboolean activate_push(GstPad *pad, gboolean activate)
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{
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struct wg_parser *parser = gst_pad_get_element_private(pad);
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if (!activate)
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{
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if (parser->push_thread)
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{
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pthread_join(parser->push_thread, NULL);
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parser->push_thread = 0;
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}
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}
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else if (!parser->push_thread)
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{
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int ret;
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if ((ret = pthread_create(&parser->push_thread, NULL, push_data, parser)))
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{
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GST_ERROR("Failed to create push thread: %s", strerror(errno));
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parser->push_thread = 0;
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return FALSE;
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}
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}
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return TRUE;
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}
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static gboolean src_activate_mode_cb(GstPad *pad, GstObject *parent, GstPadMode mode, gboolean activate)
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{
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struct wg_parser *parser = gst_pad_get_element_private(pad);
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GST_DEBUG("%s source pad for parser %p in %s mode.",
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activate ? "Activating" : "Deactivating", parser, gst_pad_mode_get_name(mode));
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switch (mode)
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{
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case GST_PAD_MODE_PULL:
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return TRUE;
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case GST_PAD_MODE_PUSH:
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return activate_push(pad, activate);
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case GST_PAD_MODE_NONE:
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break;
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}
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return FALSE;
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return true;
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}
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static GstBusSyncReply bus_handler_cb(GstBus *bus, GstMessage *msg, gpointer user)
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@ -1440,89 +1347,11 @@ static GstBusSyncReply bus_handler_cb(GstBus *bus, GstMessage *msg, gpointer use
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return GST_BUS_DROP;
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}
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static gboolean src_perform_seek(struct wg_parser *parser, GstEvent *event)
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{
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BOOL thread = !!parser->push_thread;
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GstSeekType cur_type, stop_type;
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GstFormat seek_format;
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GstEvent *flush_event;
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GstSeekFlags flags;
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gint64 cur, stop;
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guint32 seqnum;
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gdouble rate;
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gst_event_parse_seek(event, &rate, &seek_format, &flags,
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&cur_type, &cur, &stop_type, &stop);
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if (seek_format != GST_FORMAT_BYTES)
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{
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GST_FIXME("Unhandled format \"%s\".", gst_format_get_name(seek_format));
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return FALSE;
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}
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seqnum = gst_event_get_seqnum(event);
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/* send flush start */
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if (flags & GST_SEEK_FLAG_FLUSH)
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{
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flush_event = gst_event_new_flush_start();
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gst_event_set_seqnum(flush_event, seqnum);
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gst_pad_push_event(parser->my_src, flush_event);
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if (thread)
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gst_pad_set_active(parser->my_src, 1);
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}
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parser->next_offset = parser->start_offset = cur;
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/* and prepare to continue streaming */
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if (flags & GST_SEEK_FLAG_FLUSH)
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{
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flush_event = gst_event_new_flush_stop(TRUE);
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gst_event_set_seqnum(flush_event, seqnum);
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gst_pad_push_event(parser->my_src, flush_event);
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if (thread)
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gst_pad_set_active(parser->my_src, 1);
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}
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return TRUE;
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}
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static gboolean src_event_cb(GstPad *pad, GstObject *parent, GstEvent *event)
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{
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struct wg_parser *parser = gst_pad_get_element_private(pad);
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gboolean ret = TRUE;
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GST_LOG("parser %p, type \"%s\".", parser, GST_EVENT_TYPE_NAME(event));
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switch (event->type)
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{
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case GST_EVENT_SEEK:
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ret = src_perform_seek(parser, event);
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break;
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case GST_EVENT_FLUSH_START:
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case GST_EVENT_FLUSH_STOP:
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case GST_EVENT_QOS:
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case GST_EVENT_RECONFIGURE:
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break;
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default:
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GST_WARNING("Ignoring \"%s\" event.", GST_EVENT_TYPE_NAME(event));
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ret = FALSE;
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break;
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}
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gst_event_unref(event);
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return ret;
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}
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static HRESULT CDECL wg_parser_connect(struct wg_parser *parser, uint64_t file_size)
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{
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GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE("quartz_src",
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GST_PAD_SRC, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY);
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unsigned int i;
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int ret;
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parser->file_size = file_size;
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parser->sink_connected = true;
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if (!parser->bus)
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|
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@ -1534,15 +1363,16 @@ static HRESULT CDECL wg_parser_connect(struct wg_parser *parser, uint64_t file_s
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parser->container = gst_bin_new(NULL);
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gst_element_set_bus(parser->container, parser->bus);
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parser->my_src = gst_pad_new_from_static_template(&src_template, "quartz-src");
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gst_pad_set_getrange_function(parser->my_src, src_getrange_cb);
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gst_pad_set_query_function(parser->my_src, src_query_cb);
|
||||
gst_pad_set_activatemode_function(parser->my_src, src_activate_mode_cb);
|
||||
gst_pad_set_event_function(parser->my_src, src_event_cb);
|
||||
gst_pad_set_element_private(parser->my_src, parser);
|
||||
if (!(parser->appsrc = create_element("appsrc", "base")))
|
||||
return E_FAIL;
|
||||
gst_bin_add(GST_BIN(parser->container), parser->appsrc);
|
||||
|
||||
parser->start_offset = parser->next_offset = parser->stop_offset = 0;
|
||||
parser->next_pull_offset = 0;
|
||||
g_object_set(parser->appsrc, "stream-type", GST_APP_STREAM_TYPE_RANDOM_ACCESS, NULL);
|
||||
g_object_set(parser->appsrc, "size", file_size, NULL);
|
||||
g_signal_connect(parser->appsrc, "need-data", G_CALLBACK(src_need_data), parser);
|
||||
g_signal_connect(parser->appsrc, "seek-data", G_CALLBACK(src_seek_data), parser);
|
||||
|
||||
parser->read_request.offset = 0;
|
||||
parser->error = false;
|
||||
|
||||
if (!parser->init_gst(parser))
|
||||
|
|
@ -1638,18 +1468,11 @@ static HRESULT CDECL wg_parser_connect(struct wg_parser *parser, uint64_t file_s
|
|||
|
||||
pthread_mutex_unlock(&parser->mutex);
|
||||
|
||||
parser->next_offset = 0;
|
||||
return S_OK;
|
||||
|
||||
out:
|
||||
if (parser->container)
|
||||
gst_element_set_state(parser->container, GST_STATE_NULL);
|
||||
if (parser->their_sink)
|
||||
{
|
||||
gst_pad_unlink(parser->my_src, parser->their_sink);
|
||||
gst_object_unref(parser->their_sink);
|
||||
parser->my_src = parser->their_sink = NULL;
|
||||
}
|
||||
|
||||
for (i = 0; i < parser->stream_count; ++i)
|
||||
free_stream(parser->streams[i]);
|
||||
|
|
@ -1686,10 +1509,6 @@ static void CDECL wg_parser_disconnect(struct wg_parser *parser)
|
|||
pthread_mutex_unlock(&parser->mutex);
|
||||
|
||||
gst_element_set_state(parser->container, GST_STATE_NULL);
|
||||
gst_pad_unlink(parser->my_src, parser->their_sink);
|
||||
gst_object_unref(parser->my_src);
|
||||
gst_object_unref(parser->their_sink);
|
||||
parser->my_src = parser->their_sink = NULL;
|
||||
|
||||
pthread_mutex_lock(&parser->mutex);
|
||||
parser->sink_connected = false;
|
||||
|
|
@ -1711,7 +1530,6 @@ static void CDECL wg_parser_disconnect(struct wg_parser *parser)
|
|||
static BOOL decodebin_parser_init_gst(struct wg_parser *parser)
|
||||
{
|
||||
GstElement *element;
|
||||
int ret;
|
||||
|
||||
if (!(element = create_element("decodebin", "base")))
|
||||
return FALSE;
|
||||
|
|
@ -1724,15 +1542,13 @@ static BOOL decodebin_parser_init_gst(struct wg_parser *parser)
|
|||
g_signal_connect(element, "autoplug-select", G_CALLBACK(autoplug_select_cb), parser);
|
||||
g_signal_connect(element, "no-more-pads", G_CALLBACK(no_more_pads_cb), parser);
|
||||
|
||||
parser->their_sink = gst_element_get_static_pad(element, "sink");
|
||||
|
||||
pthread_mutex_lock(&parser->mutex);
|
||||
parser->no_more_pads = false;
|
||||
pthread_mutex_unlock(&parser->mutex);
|
||||
|
||||
if ((ret = gst_pad_link(parser->my_src, parser->their_sink)) < 0)
|
||||
if (!gst_element_link(parser->appsrc, parser->decodebin))
|
||||
{
|
||||
GST_ERROR("Failed to link pads, error %d.\n", ret);
|
||||
GST_ERROR("Failed to link appsrc.\n");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
|
|
@ -1742,7 +1558,6 @@ static BOOL decodebin_parser_init_gst(struct wg_parser *parser)
|
|||
static BOOL avi_parser_init_gst(struct wg_parser *parser)
|
||||
{
|
||||
GstElement *element;
|
||||
int ret;
|
||||
|
||||
if (!(element = create_element("avidemux", "good")))
|
||||
return FALSE;
|
||||
|
|
@ -1753,15 +1568,13 @@ static BOOL avi_parser_init_gst(struct wg_parser *parser)
|
|||
g_signal_connect(element, "pad-removed", G_CALLBACK(pad_removed_cb), parser);
|
||||
g_signal_connect(element, "no-more-pads", G_CALLBACK(no_more_pads_cb), parser);
|
||||
|
||||
parser->their_sink = gst_element_get_static_pad(element, "sink");
|
||||
|
||||
pthread_mutex_lock(&parser->mutex);
|
||||
parser->no_more_pads = false;
|
||||
pthread_mutex_unlock(&parser->mutex);
|
||||
|
||||
if ((ret = gst_pad_link(parser->my_src, parser->their_sink)) < 0)
|
||||
if (!gst_element_link(parser->appsrc, element))
|
||||
{
|
||||
GST_ERROR("Failed to link pads, error %d.\n", ret);
|
||||
GST_ERROR("Failed to link appsrc.\n");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
|
|
@ -1779,10 +1592,9 @@ static BOOL mpeg_audio_parser_init_gst(struct wg_parser *parser)
|
|||
|
||||
gst_bin_add(GST_BIN(parser->container), element);
|
||||
|
||||
parser->their_sink = gst_element_get_static_pad(element, "sink");
|
||||
if ((ret = gst_pad_link(parser->my_src, parser->their_sink)) < 0)
|
||||
if (!gst_element_link(parser->appsrc, element))
|
||||
{
|
||||
GST_ERROR("Failed to link sink pads, error %d.\n", ret);
|
||||
GST_ERROR("Failed to link appsrc.\n");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
|
|
@ -1813,10 +1625,9 @@ static BOOL wave_parser_init_gst(struct wg_parser *parser)
|
|||
|
||||
gst_bin_add(GST_BIN(parser->container), element);
|
||||
|
||||
parser->their_sink = gst_element_get_static_pad(element, "sink");
|
||||
if ((ret = gst_pad_link(parser->my_src, parser->their_sink)) < 0)
|
||||
if (!gst_element_link(parser->appsrc, element))
|
||||
{
|
||||
GST_ERROR("Failed to link sink pads, error %d.\n", ret);
|
||||
GST_ERROR("Failed to link appsrc.\n");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
|
|
@ -1847,7 +1658,6 @@ static struct wg_parser *wg_parser_create(void)
|
|||
pthread_mutex_init(&parser->mutex, NULL);
|
||||
pthread_cond_init(&parser->init_cond, NULL);
|
||||
pthread_cond_init(&parser->read_cond, NULL);
|
||||
pthread_cond_init(&parser->read_done_cond, NULL);
|
||||
parser->flushing = true;
|
||||
|
||||
GST_DEBUG("Created winegstreamer parser %p.\n", parser);
|
||||
|
|
@ -1901,7 +1711,6 @@ static void CDECL wg_parser_destroy(struct wg_parser *parser)
|
|||
pthread_mutex_destroy(&parser->mutex);
|
||||
pthread_cond_destroy(&parser->init_cond);
|
||||
pthread_cond_destroy(&parser->read_cond);
|
||||
pthread_cond_destroy(&parser->read_done_cond);
|
||||
|
||||
free(parser);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue