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openh264enc: allow to dynamically change bitrate

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=784988
This commit is contained in:
Nicola Murino 2017-07-18 00:49:12 +02:00 committed by Olivier Crête
parent 20b5db0615
commit 11e8cf92f2
2 changed files with 54 additions and 2 deletions
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54
ext/openh264/gstopenh264enc.cpp
View file

@ -392,6 +392,8 @@ gst_openh264enc_init (GstOpenh264Enc * openh264enc)
openh264enc->num_slices = DEFAULT_NUM_SLICES;
openh264enc->encoder = NULL;
openh264enc->complexity = DEFAULT_COMPLEXITY;
openh264enc->bitrate_changed = FALSE;
openh264enc->max_bitrate_changed = FALSE;
gst_openh264enc_set_usage_type (openh264enc, CAMERA_VIDEO_REAL_TIME);
gst_openh264enc_set_rate_control (openh264enc, RC_QUALITY_MODE);
}
@ -442,11 +444,21 @@ gst_openh264enc_set_property (GObject * object, guint property_id,
switch (property_id) {
case PROP_BITRATE:
openh264enc->bitrate = g_value_get_uint (value);
GST_OBJECT_LOCK (openh264enc);
if (openh264enc->bitrate != g_value_get_uint (value)) {
openh264enc->bitrate = g_value_get_uint (value);
openh264enc->bitrate_changed = TRUE;
}
GST_OBJECT_UNLOCK (openh264enc);
break;
case PROP_MAX_BITRATE:
openh264enc->max_bitrate = g_value_get_uint (value);
GST_OBJECT_LOCK (openh264enc);
if (openh264enc->max_bitrate != g_value_get_uint (value)) {
openh264enc->max_bitrate = g_value_get_uint (value);
openh264enc->max_bitrate_changed = TRUE;
}
GST_OBJECT_UNLOCK (openh264enc);
break;
case PROP_QP_MIN:
@ -701,6 +713,8 @@ gst_openh264enc_set_format (GstVideoEncoder * encoder,
unsigned int uiTraceLevel = WELS_LOG_ERROR;
openh264enc->encoder->SetOption (ENCODER_OPTION_TRACE_LEVEL, &uiTraceLevel);
GST_OBJECT_LOCK (openh264enc);
openh264enc->encoder->GetDefaultParams (&enc_params);
enc_params.iUsageType = openh264enc->usage_type;
@ -769,6 +783,11 @@ gst_openh264enc_set_format (GstVideoEncoder * encoder,
ret = openh264enc->encoder->InitializeExt (&enc_params);
openh264enc->bitrate_changed = FALSE;
openh264enc->max_bitrate_changed = FALSE;
GST_OBJECT_UNLOCK (openh264enc);
if (ret != cmResultSuccess) {
GST_ERROR_OBJECT (openh264enc, "failed to initialize encoder");
return FALSE;
@ -811,6 +830,37 @@ gst_openh264enc_handle_frame (GstVideoEncoder * encoder,
gint i, j;
gsize buf_length = 0;
GST_OBJECT_LOCK (openh264enc);
if (openh264enc->bitrate_changed || openh264enc->max_bitrate_changed) {
SEncParamExt enc_params;
if (openh264enc->encoder->GetOption (ENCODER_OPTION_SVC_ENCODE_PARAM_EXT,
&enc_params) == cmResultSuccess) {
if (openh264enc->bitrate_changed) {
enc_params.iTargetBitrate = openh264enc->bitrate;
enc_params.sSpatialLayers[0].iSpatialBitrate =
enc_params.iTargetBitrate;
}
if (openh264enc->max_bitrate_changed) {
enc_params.iMaxBitrate = openh264enc->max_bitrate;
enc_params.sSpatialLayers[0].iMaxSpatialBitrate =
enc_params.iMaxBitrate;
}
if (openh264enc->encoder->SetOption (ENCODER_OPTION_SVC_ENCODE_PARAM_EXT,
&enc_params) != cmResultSuccess) {
GST_WARNING_OBJECT (openh264enc,
"Error changing bitrate/max bitrate, unable to set new enc_params");
}
} else {
GST_WARNING_OBJECT (openh264enc,
"Error changing bitrate/max bitrate, unable to get enc_params");
}
openh264enc->bitrate_changed = FALSE;
openh264enc->max_bitrate_changed = FALSE;
}
GST_OBJECT_UNLOCK (openh264enc);
if (frame) {
src_pic = new SSourcePicture;

2
ext/openh264/gstopenh264enc.h
View file

@ -91,6 +91,8 @@ struct _GstOpenh264Enc
GstOpenh264EncSliceMode slice_mode;
guint num_slices;
ECOMPLEXITY_MODE complexity;
gboolean bitrate_changed;
gboolean max_bitrate_changed;
};
struct _GstOpenh264EncClass