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authorJonathon Jongsma <jjongsma@redhat.com>2015-11-13 18:14:48 +0100
committerFabiano FidĂȘncio <fidencio@redhat.com>2015-11-13 18:35:09 +0100
commitcdb6b92f97679412503f4b726fdddeb892c46f56 (patch)
tree51954db87e7b2bc0f67c06a43d14cf7f5ca1d757
parent018767a0f41f13f793dbe3651cf9ccaaf25086df (diff)
downloadspice-cdb6b92f97679412503f4b726fdddeb892c46f56.zip
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Move stream functions to stream.[ch]
-rw-r--r--server/display-channel.h5
-rw-r--r--server/red_worker.c376
-rw-r--r--server/stream.c359
-rw-r--r--server/stream.h9
4 files changed, 378 insertions, 371 deletions
diff --git a/server/display-channel.h b/server/display-channel.h
index 9c8c7b6..f311d88 100644
--- a/server/display-channel.h
+++ b/server/display-channel.h
@@ -168,6 +168,11 @@ struct Drawable {
uint32_t process_commands_generation;
};
+#define LINK_TO_DPI(ptr) SPICE_CONTAINEROF((ptr), DrawablePipeItem, base)
+#define DRAWABLE_FOREACH_DPI_SAFE(drawable, link, next, dpi) \
+ SAFE_FOREACH(link, next, drawable, &(drawable)->pipes, dpi, LINK_TO_DPI(link))
+
+
struct DisplayChannelClient {
CommonChannelClient common;
diff --git a/server/red_worker.c b/server/red_worker.c
index 9a00ee6..7560b9d 100644
--- a/server/red_worker.c
+++ b/server/red_worker.c
@@ -79,9 +79,6 @@
#define DISPLAY_FREE_LIST_DEFAULT_SIZE 128
-#define FPS_TEST_INTERVAL 1
-#define MAX_FPS 30
-
#define ZLIB_DEFAULT_COMPRESSION_LEVEL 3
#define MIN_GLZ_SIZE_FOR_ZLIB 100
@@ -314,8 +311,6 @@ static void red_draw_drawable(RedWorker *worker, Drawable *item);
static void red_update_area(RedWorker *worker, const SpiceRect *area, int surface_id);
static void red_update_area_till(RedWorker *worker, const SpiceRect *area, int surface_id,
Drawable *last);
-static void detach_stream(DisplayChannel *display, Stream *stream, int detach_sized);
-static inline void display_channel_stream_maintenance(DisplayChannel *display, Drawable *candidate, Drawable *sect);
static inline void display_begin_send_message(RedChannelClient *rcc);
static void red_release_glz(DisplayChannelClient *dcc);
static void red_freeze_glz(DisplayChannelClient *dcc);
@@ -346,10 +341,6 @@ static void display_channel_client_release_item_after_push(DisplayChannelClient
DCC_FOREACH_SAFE(link, next, dcc, RED_CHANNEL(display_channel))
-#define LINK_TO_DPI(ptr) SPICE_CONTAINEROF((ptr), DrawablePipeItem, base)
-#define DRAWABLE_FOREACH_DPI_SAFE(drawable, link, next, dpi) \
- SAFE_FOREACH(link, next, drawable, &(drawable)->pipes, dpi, LINK_TO_DPI(link))
-
#define LINK_TO_GLZ(ptr) SPICE_CONTAINEROF((ptr), RedGlzDrawable, \
drawable_link)
@@ -1180,7 +1171,7 @@ static inline void __exclude_region(RedWorker *worker, Ring *ring, TreeItem *ite
} else {
if (frame_candidate) {
Drawable *drawable = SPICE_CONTAINEROF(draw, Drawable, tree_item);
- display_channel_stream_maintenance(worker->display_channel, frame_candidate, drawable);
+ stream_maintenance(worker->display_channel, frame_candidate, drawable);
}
region_exclude(&draw->base.rgn, &and_rgn);
}
@@ -1284,8 +1275,8 @@ static inline void current_add_drawable(RedWorker *worker, Drawable *drawable, R
drawable->refs++;
}
-static void detach_stream(DisplayChannel *display, Stream *stream,
- int detach_sized)
+void detach_stream(DisplayChannel *display, Stream *stream,
+ int detach_sized)
{
spice_assert(stream->current && stream->current->stream);
spice_assert(stream->current->stream == stream);
@@ -1496,17 +1487,6 @@ static void display_channel_streams_timeout(DisplayChannel *display)
}
}
-static Stream *display_channel_stream_try_new(DisplayChannel *display)
-{
- Stream *stream;
- if (!display->free_streams) {
- return NULL;
- }
- stream = display->free_streams;
- display->free_streams = display->free_streams->next;
- return stream;
-}
-
static uint64_t red_stream_get_initial_bit_rate(DisplayChannelClient *dcc,
Stream *stream)
{
@@ -1682,47 +1662,6 @@ void dcc_create_stream(DisplayChannelClient *dcc, Stream *stream)
#endif
}
-static void display_channel_create_stream(DisplayChannel *display, Drawable *drawable)
-{
- DisplayChannelClient *dcc;
- RingItem *dcc_ring_item, *next;
- Stream *stream;
- SpiceRect* src_rect;
-
- spice_assert(!drawable->stream);
-
- if (!(stream = display_channel_stream_try_new(display))) {
- return;
- }
-
- spice_assert(drawable->red_drawable->type == QXL_DRAW_COPY);
- src_rect = &drawable->red_drawable->u.copy.src_area;
-
- ring_add(&display->streams, &stream->link);
- stream->current = drawable;
- stream->last_time = drawable->creation_time;
- stream->width = src_rect->right - src_rect->left;
- stream->height = src_rect->bottom - src_rect->top;
- stream->dest_area = drawable->red_drawable->bbox;
- stream->refs = 1;
- SpiceBitmap *bitmap = &drawable->red_drawable->u.copy.src_bitmap->u.bitmap;
- stream->top_down = !!(bitmap->flags & SPICE_BITMAP_FLAGS_TOP_DOWN);
- drawable->stream = stream;
- stream->input_fps = MAX_FPS;
- stream->num_input_frames = 0;
- stream->input_fps_start_time = drawable->creation_time;
- display->streams_size_total += stream->width * stream->height;
- display->stream_count++;
- FOREACH_DCC(display, dcc_ring_item, next, dcc) {
- dcc_create_stream(dcc, stream);
- }
- spice_debug("stream %d %dx%d (%d, %d) (%d, %d)",
- (int)(stream - display->streams_buf), stream->width,
- stream->height, stream->dest_area.left, stream->dest_area.top,
- stream->dest_area.right, stream->dest_area.bottom);
- return;
-}
-
static void dcc_create_all_streams(DisplayChannelClient *dcc)
{
Ring *ring = &DCC_TO_DC(dcc)->streams;
@@ -1767,256 +1706,6 @@ static void dcc_destroy_stream_agents(DisplayChannelClient *dcc)
}
}
-static int is_next_stream_frame(DisplayChannel *display,
- const Drawable *candidate,
- const int other_src_width,
- const int other_src_height,
- const SpiceRect *other_dest,
- const red_time_t other_time,
- const Stream *stream,
- int container_candidate_allowed)
-{
- RedDrawable *red_drawable;
- int is_frame_container = FALSE;
-
- if (!candidate->streamable) {
- return STREAM_FRAME_NONE;
- }
-
- if (candidate->creation_time - other_time >
- (stream ? RED_STREAM_CONTINUS_MAX_DELTA : RED_STREAM_DETACTION_MAX_DELTA)) {
- return STREAM_FRAME_NONE;
- }
-
- red_drawable = candidate->red_drawable;
- if (!container_candidate_allowed) {
- SpiceRect* candidate_src;
-
- if (!rect_is_equal(&red_drawable->bbox, other_dest)) {
- return STREAM_FRAME_NONE;
- }
-
- candidate_src = &red_drawable->u.copy.src_area;
- if (candidate_src->right - candidate_src->left != other_src_width ||
- candidate_src->bottom - candidate_src->top != other_src_height) {
- return STREAM_FRAME_NONE;
- }
- } else {
- if (rect_contains(&red_drawable->bbox, other_dest)) {
- int candidate_area = rect_get_area(&red_drawable->bbox);
- int other_area = rect_get_area(other_dest);
- /* do not stream drawables that are significantly
- * bigger than the original frame */
- if (candidate_area > 2 * other_area) {
- spice_debug("too big candidate:");
- spice_debug("prev box ==>");
- rect_debug(other_dest);
- spice_debug("new box ==>");
- rect_debug(&red_drawable->bbox);
- return STREAM_FRAME_NONE;
- }
-
- if (candidate_area > other_area) {
- is_frame_container = TRUE;
- }
- } else {
- return STREAM_FRAME_NONE;
- }
- }
-
- if (stream) {
- SpiceBitmap *bitmap = &red_drawable->u.copy.src_bitmap->u.bitmap;
- if (stream->top_down != !!(bitmap->flags & SPICE_BITMAP_FLAGS_TOP_DOWN)) {
- return STREAM_FRAME_NONE;
- }
- }
- if (is_frame_container) {
- return STREAM_FRAME_CONTAINER;
- } else {
- return STREAM_FRAME_NATIVE;
- }
-}
-
-static void before_reattach_stream(DisplayChannel *display,
- Stream *stream, Drawable *new_frame)
-{
- DrawablePipeItem *dpi;
- DisplayChannelClient *dcc;
- int index;
- StreamAgent *agent;
- RingItem *ring_item, *next;
-
- spice_return_if_fail(stream->current);
-
- if (!red_channel_is_connected(RED_CHANNEL(display))) {
- return;
- }
-
- if (new_frame->process_commands_generation == stream->current->process_commands_generation) {
- spice_debug("ignoring drop, same process_commands_generation as previous frame");
- return;
- }
-
- index = get_stream_id(display, stream);
- DRAWABLE_FOREACH_DPI_SAFE(stream->current, ring_item, next, dpi) {
- dcc = dpi->dcc;
- agent = &dcc->stream_agents[index];
-
- if (!dcc->use_mjpeg_encoder_rate_control &&
- !dcc->common.is_low_bandwidth) {
- continue;
- }
-
- if (pipe_item_is_linked(&dpi->dpi_pipe_item)) {
-#ifdef STREAM_STATS
- agent->stats.num_drops_pipe++;
-#endif
- if (dcc->use_mjpeg_encoder_rate_control) {
- mjpeg_encoder_notify_server_frame_drop(agent->mjpeg_encoder);
- } else {
- ++agent->drops;
- }
- }
- }
-
-
- FOREACH_DCC(display, ring_item, next, dcc) {
- double drop_factor;
-
- agent = &dcc->stream_agents[index];
-
- if (dcc->use_mjpeg_encoder_rate_control) {
- continue;
- }
- if (agent->frames / agent->fps < FPS_TEST_INTERVAL) {
- agent->frames++;
- continue;
- }
- drop_factor = ((double)agent->frames - (double)agent->drops) /
- (double)agent->frames;
- spice_debug("stream %d: #frames %u #drops %u", index, agent->frames, agent->drops);
- if (drop_factor == 1) {
- if (agent->fps < MAX_FPS) {
- agent->fps++;
- spice_debug("stream %d: fps++ %u", index, agent->fps);
- }
- } else if (drop_factor < 0.9) {
- if (agent->fps > 1) {
- agent->fps--;
- spice_debug("stream %d: fps--%u", index, agent->fps);
- }
- }
- agent->frames = 1;
- agent->drops = 0;
- }
-}
-
-static void update_copy_graduality(DisplayChannel *display, Drawable *drawable)
-{
- SpiceBitmap *bitmap;
- spice_return_if_fail(drawable->red_drawable->type == QXL_DRAW_COPY);
-
- if (display->stream_video != SPICE_STREAM_VIDEO_FILTER) {
- drawable->copy_bitmap_graduality = BITMAP_GRADUAL_INVALID;
- return;
- }
-
- if (drawable->copy_bitmap_graduality != BITMAP_GRADUAL_INVALID) {
- return; // already set
- }
-
- bitmap = &drawable->red_drawable->u.copy.src_bitmap->u.bitmap;
-
- if (!bitmap_fmt_has_graduality(bitmap->format) || bitmap_has_extra_stride(bitmap) ||
- (bitmap->data->flags & SPICE_CHUNKS_FLAGS_UNSTABLE)) {
- drawable->copy_bitmap_graduality = BITMAP_GRADUAL_NOT_AVAIL;
- } else {
- drawable->copy_bitmap_graduality = bitmap_get_graduality_level(bitmap);
- }
-}
-
-static int is_stream_start(Drawable *drawable)
-{
- return ((drawable->frames_count >= RED_STREAM_FRAMES_START_CONDITION) &&
- (drawable->gradual_frames_count >=
- (RED_STREAM_GRADUAL_FRAMES_START_CONDITION * drawable->frames_count)));
-}
-
-// returns whether a stream was created
-static int display_channel_stream_add_frame(DisplayChannel *display,
- Drawable *frame_drawable,
- int frames_count,
- int gradual_frames_count,
- int last_gradual_frame)
-{
- update_copy_graduality(display, frame_drawable);
- frame_drawable->frames_count = frames_count + 1;
- frame_drawable->gradual_frames_count = gradual_frames_count;
-
- if (frame_drawable->copy_bitmap_graduality != BITMAP_GRADUAL_LOW) {
- if ((frame_drawable->frames_count - last_gradual_frame) >
- RED_STREAM_FRAMES_RESET_CONDITION) {
- frame_drawable->frames_count = 1;
- frame_drawable->gradual_frames_count = 1;
- } else {
- frame_drawable->gradual_frames_count++;
- }
-
- frame_drawable->last_gradual_frame = frame_drawable->frames_count;
- } else {
- frame_drawable->last_gradual_frame = last_gradual_frame;
- }
-
- if (is_stream_start(frame_drawable)) {
- display_channel_create_stream(display, frame_drawable);
- return TRUE;
- }
- return FALSE;
-}
-
-static void display_channel_stream_maintenance(DisplayChannel *display,
- Drawable *candidate, Drawable *prev)
-{
- int is_next_frame;
-
- if (candidate->stream) {
- return;
- }
-
- if (prev->stream) {
- Stream *stream = prev->stream;
-
- is_next_frame = is_next_stream_frame(display, candidate,
- stream->width, stream->height,
- &stream->dest_area, stream->last_time,
- stream, TRUE);
- if (is_next_frame != STREAM_FRAME_NONE) {
- before_reattach_stream(display, stream, candidate);
- detach_stream(display, stream, FALSE);
- prev->streamable = FALSE; //prevent item trace
- attach_stream(display, candidate, stream);
- if (is_next_frame == STREAM_FRAME_CONTAINER) {
- candidate->sized_stream = stream;
- }
- }
- } else if (candidate->streamable) {
- SpiceRect* prev_src = &prev->red_drawable->u.copy.src_area;
-
- is_next_frame =
- is_next_stream_frame(display, candidate, prev_src->right - prev_src->left,
- prev_src->bottom - prev_src->top,
- &prev->red_drawable->bbox, prev->creation_time,
- prev->stream,
- FALSE);
- if (is_next_frame != STREAM_FRAME_NONE) {
- display_channel_stream_add_frame(display, candidate,
- prev->frames_count,
- prev->gradual_frames_count,
- prev->last_gradual_frame);
- }
- }
-}
-
static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeItem *other)
{
DisplayChannel *display = worker->display_channel;
@@ -2039,7 +1728,7 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
if (item->effect == QXL_EFFECT_OPAQUE) {
int add_after = !!other_drawable->stream &&
is_drawable_independent_from_surfaces(drawable);
- display_channel_stream_maintenance(worker->display_channel, drawable, other_drawable);
+ stream_maintenance(worker->display_channel, drawable, other_drawable);
current_add_drawable(worker, drawable, &other->siblings_link);
other_drawable->refs++;
current_remove_drawable(worker, other_drawable);
@@ -2113,61 +1802,6 @@ static inline int red_current_add_equal(RedWorker *worker, DrawItem *item, TreeI
return FALSE;
}
-#define FOREACH_STREAMS(display, item) \
- for (item = ring_get_head(&(display)->streams); \
- item != NULL; \
- item = ring_next(&(display)->streams, item))
-
-static void red_use_stream_trace(DisplayChannel *display, Drawable *drawable)
-{
- ItemTrace *trace;
- ItemTrace *trace_end;
- RingItem *item;
-
- if (drawable->stream || !drawable->streamable || drawable->frames_count) {
- return;
- }
-
- FOREACH_STREAMS(display, item) {
- Stream *stream = SPICE_CONTAINEROF(item, Stream, link);
- int is_next_frame = is_next_stream_frame(display,
- drawable,
- stream->width,
- stream->height,
- &stream->dest_area,
- stream->last_time,
- stream,
- TRUE);
- if (is_next_frame != STREAM_FRAME_NONE) {
- if (stream->current) {
- stream->current->streamable = FALSE; //prevent item trace
- before_reattach_stream(display, stream, drawable);
- detach_stream(display, stream, FALSE);
- }
- attach_stream(display, drawable, stream);
- if (is_next_frame == STREAM_FRAME_CONTAINER) {
- drawable->sized_stream = stream;
- }
- return;
- }
- }
-
- trace = display->items_trace;
- trace_end = trace + NUM_TRACE_ITEMS;
- for (; trace < trace_end; trace++) {
- if (is_next_stream_frame(display, drawable, trace->width, trace->height,
- &trace->dest_area, trace->time, NULL, FALSE) !=
- STREAM_FRAME_NONE) {
- if (display_channel_stream_add_frame(display, drawable,
- trace->frames_count,
- trace->gradual_frames_count,
- trace->last_gradual_frame)) {
- return;
- }
- }
- }
-}
-
static inline int current_add(RedWorker *worker, Ring *ring, Drawable *drawable)
{
DrawItem *item = &drawable->tree_item;
@@ -2263,7 +1897,7 @@ static inline int current_add(RedWorker *worker, Ring *ring, Drawable *drawable)
if (item->effect == QXL_EFFECT_OPAQUE) {
region_or(&exclude_rgn, &item->base.rgn);
exclude_region(worker, ring, exclude_base, &exclude_rgn, NULL, drawable);
- red_use_stream_trace(worker->display_channel, drawable);
+ stream_trace_update(worker->display_channel, drawable);
streams_update_visible_region(worker->display_channel, drawable);
/*
* Performing the insertion after exclude_region for
diff --git a/server/stream.c b/server/stream.c
index 7ef7876..97b9e0a 100644
--- a/server/stream.c
+++ b/server/stream.c
@@ -21,6 +21,12 @@
#include "stream.h"
#include "display-channel.h"
+#define FPS_TEST_INTERVAL 1
+#define FOREACH_STREAMS(display, item) \
+ for (item = ring_get_head(&(display)->streams); \
+ item != NULL; \
+ item = ring_next(&(display)->streams, item))
+
void stream_agent_stats_print(StreamAgent *agent)
{
#ifdef STREAM_STATS
@@ -68,3 +74,356 @@ StreamClipItem *stream_clip_item_new(DisplayChannelClient* dcc, StreamAgent *age
item->refs = 1;
return item;
}
+
+static int is_stream_start(Drawable *drawable)
+{
+ return ((drawable->frames_count >= RED_STREAM_FRAMES_START_CONDITION) &&
+ (drawable->gradual_frames_count >=
+ (RED_STREAM_GRADUAL_FRAMES_START_CONDITION * drawable->frames_count)));
+}
+
+static void update_copy_graduality(DisplayChannel *display, Drawable *drawable)
+{
+ SpiceBitmap *bitmap;
+ spice_return_if_fail(drawable->red_drawable->type == QXL_DRAW_COPY);
+
+ if (display->stream_video != SPICE_STREAM_VIDEO_FILTER) {
+ drawable->copy_bitmap_graduality = BITMAP_GRADUAL_INVALID;
+ return;
+ }
+
+ if (drawable->copy_bitmap_graduality != BITMAP_GRADUAL_INVALID) {
+ return; // already set
+ }
+
+ bitmap = &drawable->red_drawable->u.copy.src_bitmap->u.bitmap;
+
+ if (!bitmap_fmt_has_graduality(bitmap->format) || bitmap_has_extra_stride(bitmap) ||
+ (bitmap->data->flags & SPICE_CHUNKS_FLAGS_UNSTABLE)) {
+ drawable->copy_bitmap_graduality = BITMAP_GRADUAL_NOT_AVAIL;
+ } else {
+ drawable->copy_bitmap_graduality = bitmap_get_graduality_level(bitmap);
+ }
+}
+
+static int is_next_stream_frame(DisplayChannel *display,
+ const Drawable *candidate,
+ const int other_src_width,
+ const int other_src_height,
+ const SpiceRect *other_dest,
+ const red_time_t other_time,
+ const Stream *stream,
+ int container_candidate_allowed)
+{
+ RedDrawable *red_drawable;
+ int is_frame_container = FALSE;
+
+ if (!candidate->streamable) {
+ return STREAM_FRAME_NONE;
+ }
+
+ if (candidate->creation_time - other_time >
+ (stream ? RED_STREAM_CONTINUS_MAX_DELTA : RED_STREAM_DETACTION_MAX_DELTA)) {
+ return STREAM_FRAME_NONE;
+ }
+
+ red_drawable = candidate->red_drawable;
+ if (!container_candidate_allowed) {
+ SpiceRect* candidate_src;
+
+ if (!rect_is_equal(&red_drawable->bbox, other_dest)) {
+ return STREAM_FRAME_NONE;
+ }
+
+ candidate_src = &red_drawable->u.copy.src_area;
+ if (candidate_src->right - candidate_src->left != other_src_width ||
+ candidate_src->bottom - candidate_src->top != other_src_height) {
+ return STREAM_FRAME_NONE;
+ }
+ } else {
+ if (rect_contains(&red_drawable->bbox, other_dest)) {
+ int candidate_area = rect_get_area(&red_drawable->bbox);
+ int other_area = rect_get_area(other_dest);
+ /* do not stream drawables that are significantly
+ * bigger than the original frame */
+ if (candidate_area > 2 * other_area) {
+ spice_debug("too big candidate:");
+ spice_debug("prev box ==>");
+ rect_debug(other_dest);
+ spice_debug("new box ==>");
+ rect_debug(&red_drawable->bbox);
+ return STREAM_FRAME_NONE;
+ }
+
+ if (candidate_area > other_area) {
+ is_frame_container = TRUE;
+ }
+ } else {
+ return STREAM_FRAME_NONE;
+ }
+ }
+
+ if (stream) {
+ SpiceBitmap *bitmap = &red_drawable->u.copy.src_bitmap->u.bitmap;
+ if (stream->top_down != !!(bitmap->flags & SPICE_BITMAP_FLAGS_TOP_DOWN)) {
+ return STREAM_FRAME_NONE;
+ }
+ }
+ if (is_frame_container) {
+ return STREAM_FRAME_CONTAINER;
+ } else {
+ return STREAM_FRAME_NATIVE;
+ }
+}
+
+static void before_reattach_stream(DisplayChannel *display,
+ Stream *stream, Drawable *new_frame)
+{
+ DrawablePipeItem *dpi;
+ DisplayChannelClient *dcc;
+ int index;
+ StreamAgent *agent;
+ RingItem *ring_item, *next;
+
+ spice_return_if_fail(stream->current);
+
+ if (!red_channel_is_connected(RED_CHANNEL(display))) {
+ return;
+ }
+
+ if (new_frame->process_commands_generation == stream->current->process_commands_generation) {
+ spice_debug("ignoring drop, same process_commands_generation as previous frame");
+ return;
+ }
+
+ index = get_stream_id(display, stream);
+ DRAWABLE_FOREACH_DPI_SAFE(stream->current, ring_item, next, dpi) {
+ dcc = dpi->dcc;
+ agent = &dcc->stream_agents[index];
+
+ if (!dcc->use_mjpeg_encoder_rate_control &&
+ !dcc->common.is_low_bandwidth) {
+ continue;
+ }
+
+ if (pipe_item_is_linked(&dpi->dpi_pipe_item)) {
+#ifdef STREAM_STATS
+ agent->stats.num_drops_pipe++;
+#endif
+ if (dcc->use_mjpeg_encoder_rate_control) {
+ mjpeg_encoder_notify_server_frame_drop(agent->mjpeg_encoder);
+ } else {
+ ++agent->drops;
+ }
+ }
+ }
+
+
+ FOREACH_DCC(display, ring_item, next, dcc) {
+ double drop_factor;
+
+ agent = &dcc->stream_agents[index];
+
+ if (dcc->use_mjpeg_encoder_rate_control) {
+ continue;
+ }
+ if (agent->frames / agent->fps < FPS_TEST_INTERVAL) {
+ agent->frames++;
+ continue;
+ }
+ drop_factor = ((double)agent->frames - (double)agent->drops) /
+ (double)agent->frames;
+ spice_debug("stream %d: #frames %u #drops %u", index, agent->frames, agent->drops);
+ if (drop_factor == 1) {
+ if (agent->fps < MAX_FPS) {
+ agent->fps++;
+ spice_debug("stream %d: fps++ %u", index, agent->fps);
+ }
+ } else if (drop_factor < 0.9) {
+ if (agent->fps > 1) {
+ agent->fps--;
+ spice_debug("stream %d: fps--%u", index, agent->fps);
+ }
+ }
+ agent->frames = 1;
+ agent->drops = 0;
+ }
+}
+
+static Stream *display_channel_stream_try_new(DisplayChannel *display)
+{
+ Stream *stream;
+ if (!display->free_streams) {
+ return NULL;
+ }
+ stream = display->free_streams;
+ display->free_streams = display->free_streams->next;
+ return stream;
+}
+
+static void display_channel_create_stream(DisplayChannel *display, Drawable *drawable)
+{
+ DisplayChannelClient *dcc;
+ RingItem *dcc_ring_item, *next;
+ Stream *stream;
+ SpiceRect* src_rect;
+
+ spice_assert(!drawable->stream);
+
+ if (!(stream = display_channel_stream_try_new(display))) {
+ return;
+ }
+
+ spice_assert(drawable->red_drawable->type == QXL_DRAW_COPY);
+ src_rect = &drawable->red_drawable->u.copy.src_area;
+
+ ring_add(&display->streams, &stream->link);
+ stream->current = drawable;
+ stream->last_time = drawable->creation_time;
+ stream->width = src_rect->right - src_rect->left;
+ stream->height = src_rect->bottom - src_rect->top;
+ stream->dest_area = drawable->red_drawable->bbox;
+ stream->refs = 1;
+ SpiceBitmap *bitmap = &drawable->red_drawable->u.copy.src_bitmap->u.bitmap;
+ stream->top_down = !!(bitmap->flags & SPICE_BITMAP_FLAGS_TOP_DOWN);
+ drawable->stream = stream;
+ stream->input_fps = MAX_FPS;
+ stream->num_input_frames = 0;
+ stream->input_fps_start_time = drawable->creation_time;
+ display->streams_size_total += stream->width * stream->height;
+ display->stream_count++;
+ FOREACH_DCC(display, dcc_ring_item, next, dcc) {
+ dcc_create_stream(dcc, stream);
+ }
+ spice_debug("stream %d %dx%d (%d, %d) (%d, %d)",
+ (int)(stream - display->streams_buf), stream->width,
+ stream->height, stream->dest_area.left, stream->dest_area.top,
+ stream->dest_area.right, stream->dest_area.bottom);
+ return;
+}
+
+// returns whether a stream was created
+static int stream_add_frame(DisplayChannel *display,
+ Drawable *frame_drawable,
+ int frames_count,
+ int gradual_frames_count,
+ int last_gradual_frame)
+{
+ update_copy_graduality(display, frame_drawable);
+ frame_drawable->frames_count = frames_count + 1;
+ frame_drawable->gradual_frames_count = gradual_frames_count;
+
+ if (frame_drawable->copy_bitmap_graduality != BITMAP_GRADUAL_LOW) {
+ if ((frame_drawable->frames_count - last_gradual_frame) >
+ RED_STREAM_FRAMES_RESET_CONDITION) {
+ frame_drawable->frames_count = 1;
+ frame_drawable->gradual_frames_count = 1;
+ } else {
+ frame_drawable->gradual_frames_count++;
+ }
+
+ frame_drawable->last_gradual_frame = frame_drawable->frames_count;
+ } else {
+ frame_drawable->last_gradual_frame = last_gradual_frame;
+ }
+
+ if (is_stream_start(frame_drawable)) {
+ display_channel_create_stream(display, frame_drawable);
+ return TRUE;
+ }
+ return FALSE;
+}
+
+/* TODO: document the difference between the 2 functions below */
+void stream_trace_update(DisplayChannel *display, Drawable *drawable)
+{
+ ItemTrace *trace;
+ ItemTrace *trace_end;
+ RingItem *item;
+
+ if (drawable->stream || !drawable->streamable || drawable->frames_count) {
+ return;
+ }
+
+ FOREACH_STREAMS(display, item) {
+ Stream *stream = SPICE_CONTAINEROF(item, Stream, link);
+ int is_next_frame = is_next_stream_frame(display,
+ drawable,
+ stream->width,
+ stream->height,
+ &stream->dest_area,
+ stream->last_time,
+ stream,
+ TRUE);
+ if (is_next_frame != STREAM_FRAME_NONE) {
+ if (stream->current) {
+ stream->current->streamable = FALSE; //prevent item trace
+ before_reattach_stream(display, stream, drawable);
+ detach_stream(display, stream, FALSE);
+ }
+ attach_stream(display, drawable, stream);
+ if (is_next_frame == STREAM_FRAME_CONTAINER) {
+ drawable->sized_stream = stream;
+ }
+ return;
+ }
+ }
+
+ trace = display->items_trace;
+ trace_end = trace + NUM_TRACE_ITEMS;
+ for (; trace < trace_end; trace++) {
+ if (is_next_stream_frame(display, drawable, trace->width, trace->height,
+ &trace->dest_area, trace->time, NULL, FALSE) !=
+ STREAM_FRAME_NONE) {
+ if (stream_add_frame(display, drawable,
+ trace->frames_count,
+ trace->gradual_frames_count,
+ trace->last_gradual_frame)) {
+ return;
+ }
+ }
+ }
+}
+
+void stream_maintenance(DisplayChannel *display,
+ Drawable *candidate, Drawable *prev)
+{
+ int is_next_frame;
+
+ if (candidate->stream) {
+ return;
+ }
+
+ if (prev->stream) {
+ Stream *stream = prev->stream;
+
+ is_next_frame = is_next_stream_frame(display, candidate,
+ stream->width, stream->height,
+ &stream->dest_area, stream->last_time,
+ stream, TRUE);
+ if (is_next_frame != STREAM_FRAME_NONE) {
+ before_reattach_stream(display, stream, candidate);
+ detach_stream(display, stream, FALSE);
+ prev->streamable = FALSE; //prevent item trace
+ attach_stream(display, candidate, stream);
+ if (is_next_frame == STREAM_FRAME_CONTAINER) {
+ candidate->sized_stream = stream;
+ }
+ }
+ } else if (candidate->streamable) {
+ SpiceRect* prev_src = &prev->red_drawable->u.copy.src_area;
+
+ is_next_frame =
+ is_next_stream_frame(display, candidate, prev_src->right - prev_src->left,
+ prev_src->bottom - prev_src->top,
+ &prev->red_drawable->bbox, prev->creation_time,
+ prev->stream,
+ FALSE);
+ if (is_next_frame != STREAM_FRAME_NONE) {
+ stream_add_frame(display, candidate,
+ prev->frames_count,
+ prev->gradual_frames_count,
+ prev->last_gradual_frame);
+ }
+ }
+}
diff --git a/server/stream.h b/server/stream.h
index f77fa96..e4178c2 100644
--- a/server/stream.h
+++ b/server/stream.h
@@ -39,6 +39,7 @@
#define RED_STREAM_CLIENT_REPORT_TIMEOUT 1000 // milliseconds
#define RED_STREAM_DEFAULT_HIGH_START_BIT_RATE (10 * 1024 * 1024) // 10Mbps
#define RED_STREAM_DEFAULT_LOW_START_BIT_RATE (2.5 * 1024 * 1024) // 2.5Mbps
+#define MAX_FPS 30
typedef struct Stream Stream;
@@ -133,5 +134,13 @@ struct Stream {
};
void stream_agent_stats_print(StreamAgent *agent);
+void stream_trace_update (DisplayChannel *display,
+ Drawable *drawable);
+void stream_maintenance (DisplayChannel *display,
+ Drawable *candidate,
+ Drawable *prev);
+
+void attach_stream(DisplayChannel *display, Drawable *drawable, Stream *stream);
+void detach_stream(DisplayChannel *display, Stream *stream, int detach_sized);
#endif /* STREAM_H */