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vp8enc: Add property to manually specify the timebase of the encoder
https://bugzilla.gnome.org/show_bug.cgi?id=695709
This commit is contained in:
Tom Greenwood
Sebastian Dröge
parent
7a3df1ab31
commit
5532989728
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@ -146,6 +146,8 @@ gst_vp8_enc_user_data_free (GstVP8EncUserData * user_data)
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#define DEFAULT_TUNING VP8_TUNE_PSNR
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#define DEFAULT_CQ_LEVEL 10
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#define DEFAULT_MAX_INTRA_BITRATE_PCT 0
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#define DEFAULT_TIMEBASE_N 0
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#define DEFAULT_TIMEBASE_D 1
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enum
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{
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@ -192,7 +194,8 @@ enum
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PROP_ARNR_TYPE,
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PROP_TUNING,
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PROP_CQ_LEVEL,
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PROP_MAX_INTRA_BITRATE_PCT
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PROP_MAX_INTRA_BITRATE_PCT,
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PROP_TIMEBASE
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};
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#define GST_VP8_ENC_END_USAGE_TYPE (gst_vp8_enc_end_usage_get_type())
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@ -393,8 +396,7 @@ GST_STATIC_PAD_TEMPLATE ("src",
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#define parent_class gst_vp8_enc_parent_class
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G_DEFINE_TYPE_WITH_CODE (GstVP8Enc, gst_vp8_enc, GST_TYPE_VIDEO_ENCODER,
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G_IMPLEMENT_INTERFACE (GST_TYPE_TAG_SETTER, NULL);
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G_IMPLEMENT_INTERFACE (GST_TYPE_PRESET, NULL);
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);
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G_IMPLEMENT_INTERFACE (GST_TYPE_PRESET, NULL););
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static void
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gst_vp8_enc_class_init (GstVP8EncClass * klass)
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@ -700,6 +702,12 @@ gst_vp8_enc_class_init (GstVP8EncClass * klass)
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0, G_MAXINT, DEFAULT_MAX_INTRA_BITRATE_PCT,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (gobject_class, PROP_TIMEBASE,
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gst_param_spec_fraction ("timebase", "Shortest interframe time",
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"Fraction of one second that is the shortest interframe time - normally left as zero which will default to the framerate",
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0, 1, G_MAXINT, 1, DEFAULT_TIMEBASE_N, DEFAULT_TIMEBASE_D,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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GST_DEBUG_CATEGORY_INIT (gst_vp8enc_debug, "vp8enc", 0, "VP8 Encoder");
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}
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@ -768,6 +776,8 @@ gst_vp8_enc_init (GstVP8Enc * gst_vp8_enc)
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gst_vp8_enc->tuning = DEFAULT_TUNING;
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gst_vp8_enc->cq_level = DEFAULT_CQ_LEVEL;
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gst_vp8_enc->max_intra_bitrate_pct = DEFAULT_MAX_INTRA_BITRATE_PCT;
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gst_vp8_enc->timebase_n = DEFAULT_TIMEBASE_N;
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gst_vp8_enc->timebase_d = DEFAULT_TIMEBASE_D;
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gst_vp8_enc->cfg.g_profile = DEFAULT_PROFILE;
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@ -1162,6 +1172,10 @@ gst_vp8_enc_set_property (GObject * object, guint prop_id,
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}
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}
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break;
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case PROP_TIMEBASE:
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gst_vp8_enc->timebase_n = gst_value_get_fraction_numerator (value);
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gst_vp8_enc->timebase_d = gst_value_get_fraction_denominator (value);
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break;
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default:
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break;
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}
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@ -1379,6 +1393,10 @@ gst_vp8_enc_get_property (GObject * object, guint prop_id, GValue * value,
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case PROP_MAX_INTRA_BITRATE_PCT:
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g_value_set_int (value, gst_vp8_enc->max_intra_bitrate_pct);
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break;
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case PROP_TIMEBASE:
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gst_value_set_fraction (value, gst_vp8_enc->timebase_n,
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gst_vp8_enc->timebase_d);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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@ -1508,16 +1526,29 @@ gst_vp8_enc_set_format (GstVideoEncoder * video_encoder,
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encoder->cfg.g_w = GST_VIDEO_INFO_WIDTH (info);
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encoder->cfg.g_h = GST_VIDEO_INFO_HEIGHT (info);
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if (GST_VIDEO_INFO_FPS_D (info) == 0 || GST_VIDEO_INFO_FPS_N (info) == 0) {
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/* Zero framerate but still need to setup the timebase so we
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* presume this is RTP - VP8 payload draft states clock rate of 90000
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* see specification http://tools.ietf.org/html/draft-ietf-payload-vp8-01
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* section 6.3.1 */
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encoder->cfg.g_timebase.num = 1;
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encoder->cfg.g_timebase.den = 90000;
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} else {
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if (encoder->timebase_n != 0 && encoder->timebase_d != 0) {
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GST_DEBUG_OBJECT (video_encoder, "Using timebase configuration");
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encoder->cfg.g_timebase.num = encoder->timebase_n;
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encoder->cfg.g_timebase.den = encoder->timebase_d;
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} else if (GST_VIDEO_INFO_FPS_D (info) != 0
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&& GST_VIDEO_INFO_FPS_N (info) != 0) {
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/* GstVideoInfo holds either the framerate or max-framerate (if framerate
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* is 0) in FPS so this will be used if max-framerate or framerate
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* is set */
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GST_DEBUG_OBJECT (video_encoder, "Setting timebase from framerate");
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encoder->cfg.g_timebase.num = GST_VIDEO_INFO_FPS_D (info);
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encoder->cfg.g_timebase.den = GST_VIDEO_INFO_FPS_N (info);
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} else {
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/* Zero framerate and max-framerate but still need to setup the timebase to avoid
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* a divide by zero error. Presuming the lowest common denominator will be RTP -
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* VP8 payload draft states clock rate of 90000 which should work for anyone where
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* FPS < 90000 (shouldn't be too many cases where it's higher) though wouldn't be optimal. RTP specification
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* http://tools.ietf.org/html/draft-ietf-payload-vp8-01 section 6.3.1 */
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GST_WARNING_OBJECT (encoder,
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"No timebase and zero framerate setting timebase to 1/90000");
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encoder->cfg.g_timebase.num = 1;
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encoder->cfg.g_timebase.den = 90000;
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}
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if (encoder->cfg.g_pass == VPX_RC_FIRST_PASS) {
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@ -87,6 +87,9 @@ struct _GstVP8Enc
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vp8e_tuning tuning;
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unsigned int cq_level;
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unsigned int max_intra_bitrate_pct;
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/* Timebase - a value of 0 will use the framerate */
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unsigned int timebase_n;
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unsigned int timebase_d;
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/* state */
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gboolean inited;
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