From: Derek Lesho dlesho@codeweavers.com
In order to reduce wg_parser initialization time by skipping the round-trip to the PE thread.
Signed-off-by: Derek Lesho dlesho@codeweavers.com --- dlls/winegstreamer/wg_parser.c | 168 ++++++++++++++++++++++++++++----- 1 file changed, 147 insertions(+), 21 deletions(-)
diff --git a/dlls/winegstreamer/wg_parser.c b/dlls/winegstreamer/wg_parser.c index 5bb824f4399..e0ade940716 100644 --- a/dlls/winegstreamer/wg_parser.c +++ b/dlls/winegstreamer/wg_parser.c @@ -59,6 +59,12 @@ GST_DEBUG_CATEGORY(wine);
typedef BOOL (*init_gst_cb)(struct wg_parser *parser);
+struct input_cache_chunk +{ + guint64 position; + uint8_t *data; +}; + struct wg_parser { init_gst_cb init_gst; @@ -96,7 +102,10 @@ struct wg_parser bool unlimited_buffering;
gchar *sink_caps; + + struct input_cache_chunk input_cache_chunks[4]; }; +static unsigned int input_cache_chunk_size = 512 << 10;
struct wg_parser_stream { @@ -967,30 +976,10 @@ static void pad_removed_cb(GstElement *element, GstPad *pad, gpointer user) g_free(name); }
-static GstFlowReturn src_getrange_cb(GstPad *pad, GstObject *parent, - guint64 offset, guint size, GstBuffer **buffer) +static GstFlowReturn issue_read_request(struct wg_parser *parser, guint64 offset, guint size, GstBuffer **buffer) { - struct wg_parser *parser = gst_pad_get_element_private(pad); GstFlowReturn ret;
- GST_LOG("pad %p, offset %" G_GINT64_MODIFIER "u, size %u, buffer %p.", pad, offset, size, *buffer); - - if (offset == GST_BUFFER_OFFSET_NONE) - offset = parser->next_pull_offset; - parser->next_pull_offset = offset + size; - - if (!size) - { - /* asfreader occasionally asks for zero bytes. gst_buffer_map() will - * return NULL in this case. Avoid confusing the read thread by asking - * it for zero bytes. */ - if (!*buffer) - *buffer = gst_buffer_new_and_alloc(0); - gst_buffer_set_size(*buffer, 0); - GST_LOG("Returning empty buffer."); - return GST_FLOW_OK; - } - pthread_mutex_lock(&parser->mutex);
assert(!parser->read_request.size); @@ -1017,6 +1006,134 @@ static GstFlowReturn src_getrange_cb(GstPad *pad, GstObject *parent, return ret; }
+static struct input_cache_chunk * get_cache_entry(struct wg_parser *parser, guint64 position) +{ + struct input_cache_chunk chunk; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(parser->input_cache_chunks); i++) + { + chunk = parser->input_cache_chunks[i]; + + if (chunk.data && position == chunk.position) + { + if (i != 0) + { + memmove(&parser->input_cache_chunks[1], &parser->input_cache_chunks[0], i * sizeof(chunk)); + parser->input_cache_chunks[0] = chunk; + } + + return &parser->input_cache_chunks[0]; + } + } + + return NULL; +} + +static gsize read_cached_chunk(struct wg_parser *parser, guint64 chunk_position, unsigned int chunk_offset, GstBuffer *buffer, guint64 buffer_offset) +{ + struct input_cache_chunk *chunk; + GstBuffer *chunk_buffer; + void *chunk_data; + GstFlowReturn ret; + + if ((chunk = get_cache_entry(parser, chunk_position))) + { + return !!gst_buffer_fill(buffer, buffer_offset, chunk->data + chunk_offset, input_cache_chunk_size - chunk_offset) ? GST_FLOW_OK : GST_FLOW_ERROR; + } + + chunk = &parser->input_cache_chunks[ ARRAY_SIZE(parser->input_cache_chunks) - 1 ]; + + if (!(chunk_data = chunk->data)) + chunk_data = malloc(input_cache_chunk_size); + + chunk_buffer = gst_buffer_new_wrapped_full(0, chunk_data, input_cache_chunk_size, 0, input_cache_chunk_size, NULL, NULL); + ret = issue_read_request(parser, chunk_position, input_cache_chunk_size, &chunk_buffer); + gst_buffer_unref(chunk_buffer); + + if (ret != GST_FLOW_OK) + { + if (!chunk->data) + free(chunk_data); + return ret; + } + + memmove(&parser->input_cache_chunks[1], &parser->input_cache_chunks[0], (ARRAY_SIZE(parser->input_cache_chunks) - 1) * sizeof(*chunk)); + parser->input_cache_chunks[0].data = chunk_data; + parser->input_cache_chunks[0].position = chunk_position; + + chunk = &parser->input_cache_chunks[0]; + return !!gst_buffer_fill(buffer, buffer_offset, chunk->data + chunk_offset, input_cache_chunk_size - chunk_offset) ? GST_FLOW_OK : GST_FLOW_ERROR; +} + +static GstFlowReturn read_input_cache(struct wg_parser *parser, guint64 offset, guint size, GstBuffer **buffer) +{ + unsigned int i, chunk_count, chunk_offset, buffer_offset = 0; + GstBuffer *working_buffer; + guint64 chunk_position; + GstFlowReturn ret; + + working_buffer = *buffer; + if (!working_buffer) + working_buffer = gst_buffer_new_and_alloc(size); + + chunk_position = offset - (offset % input_cache_chunk_size); + chunk_count = (offset + size + input_cache_chunk_size - chunk_position - 1) / input_cache_chunk_size; + chunk_offset = offset - chunk_position; + + for (i = 0; i < chunk_count; i++) + { + if ((ret = read_cached_chunk(parser, chunk_position, chunk_offset, working_buffer, buffer_offset)) != GST_FLOW_OK) + { + if (!*buffer) + gst_buffer_unref(working_buffer); + return ret; + } + + chunk_position += input_cache_chunk_size; + buffer_offset += input_cache_chunk_size - chunk_offset; + chunk_offset = 0; + } + + *buffer = working_buffer; + return GST_FLOW_OK; +} + +static GstFlowReturn src_getrange_cb(GstPad *pad, GstObject *parent, + guint64 offset, guint size, GstBuffer **buffer) +{ + struct wg_parser *parser = gst_pad_get_element_private(pad); + + GST_LOG("pad %p, offset %" G_GINT64_MODIFIER "u, size %u, buffer %p.", pad, offset, size, *buffer); + + if (offset == GST_BUFFER_OFFSET_NONE) + offset = parser->next_pull_offset; + parser->next_pull_offset = offset + size; + + if (!size) + { + /* asfreader occasionally asks for zero bytes. gst_buffer_map() will + * return NULL in this case. Avoid confusing the read thread by asking + * it for zero bytes. */ + if (!*buffer) + *buffer = gst_buffer_new_and_alloc(0); + gst_buffer_set_size(*buffer, 0); + GST_LOG("Returning empty buffer."); + return GST_FLOW_OK; + } + + if (size >= input_cache_chunk_size || sizeof(void*) == 4) + return issue_read_request(parser, offset, size, buffer); + + if (offset >= parser->file_size) + return GST_FLOW_EOS; + + if ((offset + size) >= parser->file_size) + size = parser->file_size - offset; + + return read_input_cache(parser, offset, size, buffer); +} + static gboolean src_query_cb(GstPad *pad, GstObject *parent, GstQuery *query) { struct wg_parser *parser = gst_pad_get_element_private(pad); @@ -1562,6 +1679,15 @@ static NTSTATUS wg_parser_disconnect(void *args) g_free(parser->sink_caps); parser->sink_caps = NULL;
+ for (i = 0; i < ARRAY_SIZE(parser->input_cache_chunks); i++) + { + if (parser->input_cache_chunks[i].data) + { + free(parser->input_cache_chunks[i].data); + parser->input_cache_chunks[i].data = NULL; + } + } + return S_OK; }