[Spice-devel] [PATCH spice 4/7] server: Add a GStreamer 0.10 MJPEG video encoder and use it by default. (take 2)
Francois Gouget
fgouget at codeweavers.com
Wed May 27 06:13:10 PDT 2015
The GStreamer video encoder is quite primitive and mostly meant to introduce, test and debug the basic infrastructure.
The main limitation is the lack of rate control: the bitrate is set at startup and will not react to changes in the network conditions. Still it should work fine on LANs.
---
Changes since take 1:
- Use autovideoconvert instead of ffmpegcolorspace.
- The width/height comments are now correct in the previous patch of
the series.
- Added a comment suggesting to avoid copying the compressed buffer as
a future improvement.
configure.ac | 18 ++
server/Makefile.am | 8 +
server/gstreamer_encoder.c | 440 +++++++++++++++++++++++++++++++++++++++++++++
server/red_worker.c | 11 +-
server/video_encoder.h | 6 +
5 files changed, 481 insertions(+), 2 deletions(-)
create mode 100644 server/gstreamer_encoder.c
diff --git a/configure.ac b/configure.ac
index 7a9fc4b..919bf88 100644
--- a/configure.ac
+++ b/configure.ac
@@ -91,6 +91,15 @@ if test "x$enable_smartcard" = "xyes"; then
AC_DEFINE([USE_SMARTCARD], [1], [Define if supporting smartcard proxying])
fi
+AC_ARG_ENABLE(gstreamer-0.10,
+[ --enable-gstreamer-0.10 Enable GStreamer 0.10 support],,
+[enable_gstreamer_0_10="yes"])
+AS_IF([test x"$enable_gstreamer_0_10" != "xno"], [enable_gstreamer_0_10="yes"])
+AM_CONDITIONAL(SUPPORT_GSTREAMER_0_10, test "x$enable_gstreamer_0_10" != "xno")
+if test "x$enable_gstreamer_0_10" = "xyes"; then
+ AC_DEFINE([HAVE_GSTREAMER_0_10], [1], [Define if supporting GStreamer 0.10])
+fi
+
AC_ARG_ENABLE(automated_tests,
[ --enable-automated-tests Enable automated tests using spicy-screenshot (part of spice--gtk)],,
[enable_automated_tests="no"])
@@ -127,6 +136,13 @@ if test "x$enable_smartcard" = "xyes"; then
AS_VAR_APPEND([SPICE_REQUIRES], [" libcacard >= 0.1.2"])
fi
+if test "x$enable_gstreamer_0_10" = "xyes"; then
+ PKG_CHECK_MODULES(GSTREAMER_0_10, [gstreamer-0.10, gstreamer-app-0.10])
+ AC_SUBST(GSTREAMER_0_10_LIBS)
+ AC_SUBST(GSTREAMER_0_10_CFLAGS)
+ AS_VAR_APPEND([SPICE_REQUIRES], [" gstreamer-0.10"])
+fi
+
PKG_CHECK_MODULES([GLIB2], [glib-2.0 >= 2.22])
AS_VAR_APPEND([SPICE_REQUIRES], [" glib-2.0 >= 2.22"])
@@ -359,6 +375,8 @@ echo "
Smartcard: ${enable_smartcard}
+ GStreamer-0.10: ${enable_gstreamer_0_10}
+
SASL support: ${enable_sasl}
Automated tests: ${enable_automated_tests}
diff --git a/server/Makefile.am b/server/Makefile.am
index 36b6d45..28c4a46 100644
--- a/server/Makefile.am
+++ b/server/Makefile.am
@@ -11,6 +11,7 @@ AM_CPPFLAGS = \
$(SASL_CFLAGS) \
$(SLIRP_CFLAGS) \
$(SMARTCARD_CFLAGS) \
+ $(GSTREAMER_0_10_CFLAGS) \
$(SSL_CFLAGS) \
$(VISIBILITY_HIDDEN_CFLAGS) \
$(WARN_CFLAGS) \
@@ -41,6 +42,7 @@ libspice_server_la_LIBADD = \
$(PIXMAN_LIBS) \
$(SASL_LIBS) \
$(SLIRP_LIBS) \
+ $(GSTREAMER_0_10_LIBS) \
$(SSL_LIBS) \
$(Z_LIBS) \
$(SPICE_NONPKGCONFIG_LIBS) \
@@ -138,6 +140,12 @@ libspice_server_la_SOURCES += \
$(NULL)
endif
+if SUPPORT_GSTREAMER_0_10
+libspice_server_la_SOURCES += \
+ gstreamer_encoder.c \
+ $(NULL)
+endif
+
EXTRA_DIST = \
glz_encode_match_tmpl.c \
glz_encode_tmpl.c \
diff --git a/server/gstreamer_encoder.c b/server/gstreamer_encoder.c
new file mode 100644
index 0000000..cd80cc9
--- /dev/null
+++ b/server/gstreamer_encoder.c
@@ -0,0 +1,440 @@
+/* -*- Mode: C; c-basic-offset: 4; indent-tabs-mode: nil -*- */
+/*
+ Copyright (C) 2015 Jeremy White
+ Copyright (C) 2015 Francois Gouget
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, see <<A HREF="http://www.gnu.org/licenses/">http://www.gnu.org/licenses/</A>>.
+*/
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <gst/gst.h>
+#include <gst/app/gstappsrc.h>
+#include <gst/app/gstappsink.h>
+
+#include "red_common.h"
+
+typedef struct GstEncoder GstEncoder;
+#define VIDEO_ENCODER_T GstEncoder
+#include "video_encoder.h"
+
+typedef struct {
+ SpiceBitmapFmt spice_format;
+ int bpp;
+ int depth;
+ int endianness;
+ int blue_mask;
+ int green_mask;
+ int red_mask;
+} SpiceFormatForGStreamer;
+
+struct GstEncoder {
+ VideoEncoder base;
+
+ /* The GStreamer pipeline. If pipeline is NULL then the other pointers are
+ * invalid.
+ */
+ GstElement *pipeline;
+ GstCaps *src_caps;
+ GstAppSrc *appsrc;
+ GstElement *gstenc;
+ GstAppSink *appsink;
+
+ /* The frame counter for GStreamer buffers */
+ int frame;
+
+ /* Source video information */
+ int width;
+ int height;
+ SpiceFormatForGStreamer *format;
+ SpiceBitmapFmt spice_format;
+
+ /* Rate control information */
+ uint64_t bit_rate;
+
+ /* Rate control callbacks */
+ VideoEncoderRateControlCbs cbs;
+ void *cbs_opaque;
+
+ /* stats */
+ uint64_t starting_bit_rate;
+};
+
+/* The source fps changes all the time so don't store it */
+uint32_t get_source_fps(GstEncoder *encoder)
+{
+ return encoder->cbs.get_roundtrip_ms ?
+ encoder->cbs.get_source_fps(encoder->cbs_opaque) : 25;
+}
+
+static SpiceFormatForGStreamer *map_format(SpiceBitmapFmt format)
+{
+ int i;
+ static SpiceFormatForGStreamer format_map[] = {
+ { SPICE_BITMAP_FMT_RGBA, 32, 24, 4321, 0xff000000, 0xff0000, 0xff00},
+ /* TODO: Check the other formats */
+ { SPICE_BITMAP_FMT_32BIT, 32, 24, 4321, 0xff000000, 0xff0000, 0xff00},
+ { SPICE_BITMAP_FMT_24BIT, 24, 24, 4321, 0xff0000, 0xff00, 0xff},
+ { SPICE_BITMAP_FMT_16BIT, 16, 16, 4321, 0x001f, 0x03E0, 0x7C00},
+ };
+
+ for (i = 0; i < sizeof(format_map) / sizeof(format_map[0]); i++)
+ if (format_map[i].spice_format == format)
+ return &format_map[i];
+
+ return NULL;
+}
+
+static void reset_pipeline(GstEncoder *encoder)
+{
+ if (!encoder->pipeline)
+ return;
+
+ gst_element_set_state(encoder->pipeline, GST_STATE_NULL);
+ gst_caps_unref(encoder->src_caps);
+ gst_object_unref(encoder->appsrc);
+ gst_object_unref(encoder->gstenc);
+ gst_object_unref(encoder->appsink);
+ gst_object_unref(encoder->pipeline);
+ encoder->pipeline = NULL;
+}
+
+static void adjust_bit_rate(GstEncoder *encoder)
+{
+ uint64_t raw_bit_rate;
+ uint32_t fps, compression;
+
+ fps = get_source_fps(encoder);
+ raw_bit_rate = encoder->width * encoder->height * encoder->format->depth * fps;
+
+ if (!encoder->bit_rate)
+ {
+ /* If no bit rate is available start with 10 Mbps and let the rate
+ * control mechanisms trim it down.
+ */
+ encoder->bit_rate = 10 * 1024 * 1024;
+ spice_debug("resetting the bit rate to 10Mbps");
+ }
+ else if (encoder->bit_rate < 20 * 1024)
+ {
+ /* Don't let the bit rate go below 20kbps. */
+ encoder->bit_rate = 20 * 1024;
+ spice_debug("bottoming the bit rate to 20kpbs");
+ }
+
+ compression = raw_bit_rate / encoder->bit_rate;
+ if (compression < 10)
+ {
+ /* Even MJPEG should achieve good quality with a 10x compression level */
+ encoder->bit_rate = raw_bit_rate / 10;
+ spice_debug("capping the bit rate to %.2fMbps for a 10x compression level", ((double)encoder->bit_rate) / 1024 / 1024);
+ }
+ else
+ {
+ spice_debug("setting the bit rate to %.2fMbps for a %dx compression level", ((double)encoder->bit_rate) / 1024 / 1024, compression);
+ }
+}
+
+static int set_appsrc_caps(GstEncoder *encoder)
+{
+ GstCaps *new_caps = gst_caps_new_simple("video/x-raw-rgb",
+ "bpp", G_TYPE_INT, encoder->format->bpp,
+ "depth", G_TYPE_INT, encoder->format->depth,
+ "width", G_TYPE_INT, encoder->width,
+ "height", G_TYPE_INT, encoder->height,
+ "endianness", G_TYPE_INT, encoder->format->endianness,
+ "red_mask", G_TYPE_INT, encoder->format->red_mask,
+ "green_mask", G_TYPE_INT, encoder->format->green_mask,
+ "blue_mask", G_TYPE_INT, encoder->format->blue_mask,
+ "framerate", GST_TYPE_FRACTION, get_source_fps(encoder), 1,
+ NULL);
+ if (!new_caps)
+ {
+ spice_warning("GStreamer error: could not create the source caps");
+ reset_pipeline(encoder);
+ return FALSE;
+ }
+ g_object_set(G_OBJECT(encoder->appsrc), "caps", new_caps, NULL);
+ if (encoder->src_caps)
+ gst_caps_unref(encoder->src_caps);
+ encoder->src_caps = new_caps;
+ return TRUE;
+}
+
+static int construct_pipeline(GstEncoder *encoder, const SpiceBitmap *bitmap)
+{
+ GstStateChangeReturn ret;
+ GError *err;
+
+ err = NULL;
+ encoder->pipeline = gst_parse_launch_full("appsrc name=src is-live=1 ! autovideoconvert ! ffenc_mjpeg name=encoder ! appsink name=sink", NULL, GST_PARSE_FLAG_FATAL_ERRORS, &err);
+ if (!encoder->pipeline)
+ {
+ spice_warning("GStreamer error: %s", err->message);
+ g_clear_error(&err);
+ return FALSE;
+ }
+ encoder->appsrc = GST_APP_SRC(gst_bin_get_by_name(GST_BIN(encoder->pipeline), "src"));
+ encoder->gstenc = gst_bin_get_by_name(GST_BIN(encoder->pipeline), "encoder");
+ encoder->appsink = GST_APP_SINK(gst_bin_get_by_name(GST_BIN(encoder->pipeline), "sink"));
+
+ /* Set the source caps */
+ encoder->src_caps = NULL;
+ if (!set_appsrc_caps(encoder))
+ return FALSE;
+
+ /* Set the encoder initial bit rate */
+ adjust_bit_rate(encoder);
+ g_object_set(G_OBJECT(encoder->gstenc), "bitrate", encoder->bit_rate, NULL);
+
+ /* Start playing */
+ gst_pipeline_use_clock(GST_PIPELINE(encoder->pipeline), NULL);
+ ret = gst_element_set_state(encoder->pipeline, GST_STATE_PLAYING);
+ if (ret == GST_STATE_CHANGE_FAILURE) {
+ spice_warning("GStreamer error: unable to set the pipeline to the playing state");
+ reset_pipeline(encoder);
+ return FALSE;
+ }
+ return TRUE;
+}
+
+static void reconfigure_pipeline(GstEncoder *encoder)
+{
+ if (gst_element_set_state(encoder->pipeline, GST_STATE_PAUSED) == GST_STATE_CHANGE_FAILURE ||
+ !set_appsrc_caps(encoder) ||
+ gst_element_set_state(encoder->pipeline, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
+ spice_debug("GStreamer error: the pipeline reconfiguration failed, rebuilding it instead");
+ reset_pipeline(encoder); /* we can rebuild it... */
+ }
+}
+
+static inline uint8_t *get_image_line(SpiceChunks *chunks, size_t *offset,
+ int *chunk_nr, int stride)
+{
+ uint8_t *ret;
+ SpiceChunk *chunk;
+
+ chunk = &chunks->chunk[*chunk_nr];
+
+ if (*offset == chunk->len) {
+ if (*chunk_nr == chunks->num_chunks - 1) {
+ return NULL; /* Last chunk */
+ }
+ *offset = 0;
+ (*chunk_nr)++;
+ chunk = &chunks->chunk[*chunk_nr];
+ }
+
+ if (chunk->len - *offset < stride) {
+ spice_warning("bad chunk alignment");
+ return NULL;
+ }
+ ret = chunk->data + *offset;
+ *offset += stride;
+ return ret;
+}
+
+
+static int push_raw_frame(GstEncoder *encoder, const SpiceBitmap *bitmap,
+ const SpiceRect *src, int top_down)
+{
+ SpiceChunks *chunks;
+ uint32_t image_stride;
+ size_t offset;
+ int i, chunk;
+ uint8_t *p;
+
+ GstBuffer *buffer;
+ GstFlowReturn ret;
+
+ const unsigned int stream_height = src->bottom - src->top;
+ const unsigned int stream_width = src->right - src->left;
+
+ /* We could create a bunch of GstMemory objects, one per line, to avoid
+ * copying the raw frame. But this may run into alignment problems and it's
+ * unclear that it would be any faster, particularly if we're unable to
+ * cache these objects.
+ */
+ buffer = gst_buffer_new_and_alloc (stream_width * stream_height * (encoder->format->bpp / 8));
+
+ chunks = bitmap->data;
+ offset = 0;
+ chunk = 0;
+ image_stride = bitmap->stride;
+
+ const int skip_lines = top_down ? src->top : bitmap->y - (src->bottom - 0);
+ for (i = 0; i < skip_lines; i++) {
+ get_image_line(chunks, &offset, &chunk, image_stride);
+ }
+
+ for (i = 0, p = GST_BUFFER_DATA(buffer); i < stream_height; i++) {
+ uint8_t *src_line =
+ (uint8_t *)get_image_line(chunks, &offset, &chunk, image_stride);
+
+ if (!src_line) {
+ return VIDEO_ENCODER_FRAME_UNSUPPORTED;
+ }
+
+ src_line += src->left * (encoder->format->bpp / 8);
+
+ memcpy(p, src_line, stream_width * (encoder->format->bpp / 8));
+ p += stream_width * (encoder->format->bpp / 8);
+ }
+
+ /* The GStreamer buffer timestamps and framerate are irrelevant and would
+ * be hard to set right because they can arrive a bit irregularly
+ */
+ GST_BUFFER_TIMESTAMP(buffer) = GST_CLOCK_TIME_NONE;
+ GST_BUFFER_DURATION(buffer) = GST_CLOCK_TIME_NONE;
+ GST_BUFFER_OFFSET(buffer) = encoder->frame++;
+ gst_buffer_set_caps(buffer, encoder->src_caps);
+
+ ret = gst_app_src_push_buffer(encoder->appsrc, buffer);
+ if (ret != GST_FLOW_OK)
+ {
+ spice_debug("unable to push source buffer");
+ return VIDEO_ENCODER_FRAME_UNSUPPORTED;
+ }
+
+ return VIDEO_ENCODER_FRAME_ENCODE_DONE;
+}
+
+static int pull_compressed_buffer(GstEncoder *encoder,
+ uint8_t **outbuf, size_t *outbuf_size,
+ int *data_size)
+{
+ GstBuffer *buffer;
+
+ buffer = gst_app_sink_pull_buffer(encoder->appsink);
+
+ if (buffer) {
+ int len = GST_BUFFER_SIZE(buffer);
+ spice_assert(outbuf && outbuf_size);
+ if (!*outbuf || *outbuf_size < len)
+ {
+ *outbuf = spice_realloc(*outbuf, len);
+ *outbuf_size = len;
+ }
+ /* TODO Try to avoid this copy by changing the GstBuffer handling */
+ memcpy(*outbuf, GST_BUFFER_DATA(buffer), len);
+ gst_buffer_unref(buffer);
+ *data_size = len;
+ return VIDEO_ENCODER_FRAME_ENCODE_DONE;
+ }
+ return VIDEO_ENCODER_FRAME_UNSUPPORTED;
+}
+
+static void gst_encoder_destroy(GstEncoder *encoder)
+{
+ reset_pipeline(encoder);
+ free(encoder);
+}
+
+static int gst_encoder_encode_frame(GstEncoder *encoder,
+ const SpiceBitmap *bitmap,
+ int width, int height,
+ const SpiceRect *src, int top_down,
+ uint32_t frame_mm_time,
+ uint8_t **outbuf, size_t *outbuf_size,
+ int *data_size)
+{
+ int rc;
+
+ if (!encoder->pipeline || width != encoder->width ||
+ height != encoder->height || encoder->spice_format != bitmap->format) {
+ spice_debug("video format change: width %d -> %d, height %d -> %d, format %d -> %d", encoder->width, width, encoder->height, height, encoder->spice_format, bitmap->format);
+ encoder->format = map_format(bitmap->format);
+ if (!encoder->format) {
+ spice_debug("unable to map format type %d", bitmap->format);
+ return VIDEO_ENCODER_FRAME_UNSUPPORTED;
+ }
+ encoder->spice_format = bitmap->format;
+ encoder->width = width;
+ encoder->height = height;
+ if (encoder->pipeline)
+ reconfigure_pipeline(encoder);
+ }
+ if (!encoder->pipeline && !construct_pipeline(encoder, bitmap))
+ return VIDEO_ENCODER_FRAME_DROP;
+
+ rc = push_raw_frame(encoder, bitmap, src, top_down);
+ if (rc == VIDEO_ENCODER_FRAME_ENCODE_DONE)
+ rc = pull_compressed_buffer(encoder, outbuf, outbuf_size, data_size);
+ return rc;
+}
+
+void gst_encoder_client_stream_report(GstEncoder *encoder,
+ uint32_t num_frames, uint32_t num_drops,
+ uint32_t start_frame_mm_time,
+ uint32_t end_frame_mm_time,
+ int32_t end_frame_delay,
+ uint32_t audio_delay)
+{
+ spice_debug("client report: #frames %u, #drops %d, duration %u video-delay %d audio-delay %u",
+ num_frames, num_drops,
+ end_frame_mm_time - start_frame_mm_time,
+ end_frame_delay, audio_delay);
+}
+
+void gst_encoder_notify_server_frame_drop(GstEncoder *encoder)
+{
+ spice_debug("server frame drop");
+}
+
+uint64_t gst_encoder_get_bit_rate(GstEncoder *encoder)
+{
+ return encoder->bit_rate;
+}
+
+void gst_encoder_get_stats(GstEncoder *encoder, VideoEncoderStats *stats)
+{
+ uint64_t raw_bit_rate = encoder->width * encoder->height * encoder->format->bpp * get_source_fps(encoder);
+
+ spice_assert(encoder != NULL && stats != NULL);
+ stats->starting_bit_rate = encoder->starting_bit_rate;
+ stats->cur_bit_rate = encoder->bit_rate;
+
+ /* Use the compression level as a proxy for the quality */
+ stats->avg_quality = 100.0 - raw_bit_rate / encoder->bit_rate;
+ if (stats->avg_quality < 0)
+ stats->avg_quality = 0;
+}
+
+GstEncoder *create_gstreamer_encoder(uint64_t starting_bit_rate, VideoEncoderRateControlCbs *cbs, void *cbs_opaque)
+{
+ GstEncoder *encoder;
+
+ spice_assert(!cbs || (cbs && cbs->get_roundtrip_ms && cbs->get_source_fps));
+
+ gst_init(NULL, NULL);
+
+ encoder = spice_new0(GstEncoder, 1);
+ encoder->base.destroy = &gst_encoder_destroy;
+ encoder->base.encode_frame = &gst_encoder_encode_frame;
+ encoder->base.client_stream_report = &gst_encoder_client_stream_report;
+ encoder->base.notify_server_frame_drop = &gst_encoder_notify_server_frame_drop;
+ encoder->base.get_bit_rate = &gst_encoder_get_bit_rate;
+ encoder->base.get_stats = &gst_encoder_get_stats;
+ encoder->pipeline = NULL;
+
+ if (cbs)
+ encoder->cbs = *cbs;
+ else
+ encoder->cbs.get_roundtrip_ms = NULL;
+ encoder->cbs_opaque = cbs_opaque;
+ encoder->bit_rate = encoder->starting_bit_rate = starting_bit_rate;
+
+ return encoder;
+}
diff --git a/server/red_worker.c b/server/red_worker.c
index c6b39cb..19e27c5 100644
--- a/server/red_worker.c
+++ b/server/red_worker.c
@@ -3077,6 +3077,7 @@ static void red_stream_update_client_playback_latency(void *opaque, uint32_t del
static void red_display_create_stream(DisplayChannelClient *dcc, Stream *stream)
{
StreamAgent *agent = &dcc->stream_agents[get_stream_id(dcc->common.worker, stream)];
+ create_video_encoder_proc create_video_encoder;
stream->refs++;
spice_assert(region_is_empty(&agent->vis_region));
@@ -3091,6 +3092,12 @@ static void red_display_create_stream(DisplayChannelClient *dcc, Stream *stream)
agent->fps = MAX_FPS;
agent->dcc = dcc;
+#ifdef HAVE_GSTREAMER_0_10
+ create_video_encoder = &create_gstreamer_encoder;
+#else
+ create_video_encoder = &create_mjpeg_encoder;
+#endif
+
if (dcc->use_video_encoder_rate_control) {
VideoEncoderRateControlCbs video_cbs;
uint64_t initial_bit_rate;
@@ -3100,9 +3107,9 @@ static void red_display_create_stream(DisplayChannelClient *dcc, Stream *stream)
video_cbs.update_client_playback_delay = red_stream_update_client_playback_latency;
initial_bit_rate = red_stream_get_initial_bit_rate(dcc, stream);
- agent->video_encoder = create_mjpeg_encoder(initial_bit_rate, &video_cbs, agent);
+ agent->video_encoder = create_video_encoder(initial_bit_rate, &video_cbs, agent);
} else {
- agent->video_encoder = create_mjpeg_encoder(0, NULL, NULL);
+ agent->video_encoder = create_video_encoder(0, NULL, NULL);
}
red_channel_client_pipe_add(&dcc->common.base, &agent->create_item);
diff --git a/server/video_encoder.h b/server/video_encoder.h
index d07138b..70547b0 100644
--- a/server/video_encoder.h
+++ b/server/video_encoder.h
@@ -155,8 +155,14 @@ typedef struct VideoEncoderRateControlCbs {
* @return: A pointer to a structure implementing the VideoEncoder
* methods.
*/
+typedef VIDEO_ENCODER_T* (*create_video_encoder_proc)(uint64_t starting_bit_rate, VideoEncoderRateControlCbs *cbs, void *cbs_opaque);
+
VIDEO_ENCODER_T* create_mjpeg_encoder(uint64_t starting_bit_rate,
VideoEncoderRateControlCbs *cbs,
void *cbs_opaque);
+VIDEO_ENCODER_T* create_gstreamer_encoder(uint64_t starting_bit_rate,
+ VideoEncoderRateControlCbs *cbs,
+ void *cbs_opaque);
+
#endif
--
2.1.4
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