GstElement * _owr_payload_create_decoder(OwrPayload *payload)
{
GstElement * decoder = NULL;
gchar *element_name = NULL;
g_return_val_if_fail(payload, NULL);
switch (payload->priv->codec_type) {
case OWR_CODEC_TYPE_H264:
decoder = try_codecs(h264_decoders, "decoder");
g_return_val_if_fail(decoder, NULL);
break;
case OWR_CODEC_TYPE_VP8:
decoder = try_codecs(vp8_decoders, "decoder");
g_return_val_if_fail(decoder, NULL);
break;
default:
element_name = g_strdup_printf("decoder_%s_%u", OwrCodecTypeDecoderElementName[payload->priv->codec_type], get_unique_id());
decoder = gst_element_factory_make(OwrCodecTypeDecoderElementName[payload->priv->codec_type], element_name);
g_free(element_name);
g_return_val_if_fail(decoder, NULL);
break;
}
return decoder;
}
GstElement * _owr_payload_create_encoder(OwrPayload *payload)
{
GstElement *encoder = NULL;
gchar *element_name = NULL;
GstElementFactory *factory;
const gchar *factory_name;
g_return_val_if_fail(payload, NULL);
switch (payload->priv->codec_type) {
case OWR_CODEC_TYPE_H264:
encoder = try_codecs(h264_encoders, "encoder");
g_return_val_if_fail(encoder, NULL);
factory = gst_element_get_factory(encoder);
factory_name = gst_plugin_feature_get_name(factory);
if (!strcmp(factory_name, "openh264enc")) {
g_object_set(encoder, "gop-size", 0, NULL);
gst_util_set_object_arg(G_OBJECT(encoder), "rate-control", "bitrate");
g_object_bind_property(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE);
} else if (!strcmp(factory_name, "x264enc")) {
g_object_bind_property_full(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE,
binding_transform_to_kbps, NULL, NULL, NULL);
g_object_set(encoder, "tune", 0x04 /* zero-latency */, NULL);
} else if (!strcmp(factory_name, "vtenc_h264")) {
g_object_bind_property_full(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE,
binding_transform_to_kbps, NULL, NULL, NULL);
} else {
/* Assume bits/s instead of kbit/s */
g_object_bind_property(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE);
}
g_object_set(payload, "bitrate", evaluate_bitrate_from_payload(payload), NULL);
break;
case OWR_CODEC_TYPE_VP8:
encoder = try_codecs(vp8_encoders, "encoder");
g_return_val_if_fail(encoder, NULL);
g_object_set(encoder, "end-usage", 1, "deadline", G_GINT64_CONSTANT(1), "lag-in-frames", 0,
"error-resilient", 1, "keyframe-mode", 0, NULL);
g_object_bind_property(payload, "bitrate", encoder, "target-bitrate", G_BINDING_SYNC_CREATE);
g_object_set(payload, "bitrate", evaluate_bitrate_from_payload(payload), NULL);
break;
default:
element_name = g_strdup_printf("encoder_%s_%u", OwrCodecTypeEncoderElementName[payload->priv->codec_type], get_unique_id());
encoder = gst_element_factory_make(OwrCodecTypeEncoderElementName[payload->priv->codec_type], element_name);
g_free(element_name);
g_return_val_if_fail(encoder, NULL);
break;
}
return encoder;
}
GstElement * _owr_payload_create_encoder(OwrPayload *payload)
{
GstElement *encoder = NULL;
gchar *element_name = NULL;
GstElementFactory *factory;
const gchar *factory_name;
gint cpu_used;
g_return_val_if_fail(payload, NULL);
switch (payload->priv->codec_type) {
case OWR_CODEC_TYPE_H264:
encoder = try_codecs(h264_encoders, "encoder");
g_return_val_if_fail(encoder, NULL);
factory = gst_element_get_factory(encoder);
factory_name = gst_plugin_feature_get_name(factory);
if (!strcmp(factory_name, "openh264enc")) {
g_object_set(encoder, "gop-size", 0, NULL);
gst_util_set_object_arg(G_OBJECT(encoder), "rate-control", "bitrate");
gst_util_set_object_arg(G_OBJECT(encoder), "complexity", "low");
g_object_bind_property(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE);
} else if (!strcmp(factory_name, "x264enc")) {
g_object_bind_property_full(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE,
binding_transform_to_kbps, NULL, NULL, NULL);
gst_util_set_object_arg(G_OBJECT(encoder), "speed-preset", "ultrafast");
gst_util_set_object_arg(G_OBJECT(encoder), "tune", "fastdecode+zerolatency");
} else if (!strcmp(factory_name, "vtenc_h264")) {
g_object_bind_property_full(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE,
binding_transform_to_kbps, NULL, NULL, NULL);
g_object_set(encoder,
"allow-frame-reordering", FALSE,
"realtime", TRUE,
#if defined(__APPLE__) && TARGET_OS_IPHONE
"quality", 0.0,
#else
"quality", 0.5,
#endif
"max-keyframe-interval", G_MAXINT,
NULL);
} else if (!strcmp(factory_name, "omxh264enc")) {
g_object_set(encoder, "control-rate", 2, NULL);
g_object_bind_property(payload, "bitrate", encoder, "target-bitrate", G_BINDING_SYNC_CREATE);
} else {
/* Assume bits/s instead of kbit/s */
g_object_bind_property(payload, "bitrate", encoder, "bitrate", G_BINDING_SYNC_CREATE);
}
g_object_set(payload, "bitrate", evaluate_bitrate_from_payload(payload), NULL);
//make_preset = TRUE;
break;
case OWR_CODEC_TYPE_VP8:
encoder = try_codecs(vp8_encoders, "encoder");
g_return_val_if_fail(encoder, NULL);
factory = gst_element_get_factory(encoder);
factory_name = gst_plugin_feature_get_name(factory);
#if (defined(__APPLE__) && TARGET_OS_IPHONE && !TARGET_IPHONE_SIMULATOR) || defined(__ANDROID__)
cpu_used = -12; /* Mobile */
#else
cpu_used = -6; /* Desktop */
#endif
if (!strcmp(factory_name, "omxvp8enc"))
{
g_object_set(encoder, "control-rate", 2, NULL);
}
else // vp8enc
{
/* values are inspired by webrtc.org values in vp8_impl.cc */
g_object_set(encoder,
"end-usage", 1, /* VPX_CBR */
"deadline", G_GINT64_CONSTANT(1), /* VPX_DL_REALTIME */
"cpu-used", cpu_used,
"min-quantizer", 2,
"buffer-initial-size", 500,
"buffer-optimal-size", 600,
"buffer-size", 1000,
"lag-in-frames", 0,
"timebase", 1, 90000,
"error-resilient", 1,
"keyframe-mode", 0, /* VPX_KF_DISABLED */
NULL);
}
g_object_bind_property(payload, "bitrate", encoder, "target-bitrate", G_BINDING_SYNC_CREATE);
g_object_set(payload, "bitrate", evaluate_bitrate_from_payload(payload), NULL);
//make_preset = TRUE;
break;
default:
element_name = g_strdup_printf("encoder_%s_%u", OwrCodecTypeEncoderElementName[payload->priv->codec_type], get_unique_id());
encoder = gst_element_factory_make(OwrCodecTypeEncoderElementName[payload->priv->codec_type], element_name);
g_free(element_name);
g_return_val_if_fail(encoder, NULL);
break;
}
return encoder;
}
