diff options
Diffstat (limited to 'plugins/rtp/src/device.vala')
| -rw-r--r-- | plugins/rtp/src/device.vala | 85 |
1 files changed, 83 insertions, 2 deletions
diff --git a/plugins/rtp/src/device.vala b/plugins/rtp/src/device.vala index 3546ab94..89d499ed 100644 --- a/plugins/rtp/src/device.vala +++ b/plugins/rtp/src/device.vala @@ -36,6 +36,7 @@ public class Dino.Plugins.Rtp.Device : MediaDevice, Object { return device.has_classes("Sink"); }} + private Gst.Caps device_caps; private Gst.Element element; private Gst.Element tee; private Gst.Element dsp; @@ -46,9 +47,13 @@ public class Dino.Plugins.Rtp.Device : MediaDevice, Object { // Codecs private Gee.Map<PayloadType, Gst.Element> codecs = new HashMap<PayloadType, Gst.Element>(PayloadType.hash_func, PayloadType.equals_func); private Gee.Map<PayloadType, Gst.Element> codec_tees = new HashMap<PayloadType, Gst.Element>(PayloadType.hash_func, PayloadType.equals_func); + + // Payloaders private Gee.Map<PayloadType, Gee.Map<uint, Gst.Element>> payloaders = new HashMap<PayloadType, Gee.Map<uint, Gst.Element>>(PayloadType.hash_func, PayloadType.equals_func); private Gee.Map<PayloadType, Gee.Map<uint, Gst.Element>> payloader_tees = new HashMap<PayloadType, Gee.Map<uint, Gst.Element>>(PayloadType.hash_func, PayloadType.equals_func); private Gee.Map<PayloadType, Gee.Map<uint, uint>> payloader_links = new HashMap<PayloadType, Gee.Map<uint, uint>>(PayloadType.hash_func, PayloadType.equals_func); + + // Bitrate private Gee.Map<PayloadType, Gee.List<CodecBitrate>> codec_bitrates = new HashMap<PayloadType, Gee.List<CodecBitrate>>(PayloadType.hash_func, PayloadType.equals_func); private class CodecBitrate { @@ -146,6 +151,51 @@ public class Dino.Plugins.Rtp.Device : MediaDevice, Object { return element; } + private static double get_target_bitrate(Gst.Caps caps) { + if (caps == null || caps.get_size() == 0) return uint.MAX; + unowned Gst.Structure? that = caps.get_structure(0); + int num = 0, den = 0, width = 0, height = 0; + if (!that.has_field("width") || !that.get_int("width", out width)) return uint.MAX; + if (!that.has_field("height") || !that.get_int("height", out height)) return uint.MAX; + if (!that.has_field("framerate")) return uint.MAX; + Value framerate = that.get_value("framerate"); + if (framerate.type() != typeof(Gst.Fraction)) return uint.MAX; + num = Gst.Value.get_fraction_numerator(framerate); + den = Gst.Value.get_fraction_denominator(framerate); + double pxs = ((double)num/(double)den) * (double)width * (double)height; + double br = Math.sqrt(Math.sqrt(pxs)) * 100.0 - 3700.0; + if (br < 128.0) return 128.0; + return br; + } + + private const int[] common_widths = {320, 480, 640, 960, 1280, 1920, 2560, 3840}; + private Gst.Caps get_active_caps(PayloadType payload_type) { + return codec_util.get_rescale_caps(codecs[payload_type]) ?? device_caps; + } + private void apply_caps(PayloadType payload_type, Gst.Caps caps) { + plugin.pause(); + debug("Set scaled caps to %s", caps.to_string()); + codec_util.update_rescale_caps(codecs[payload_type], caps); + plugin.unpause(); + } + private void apply_width(PayloadType payload_type, int new_width, uint bitrate) { + int device_caps_width, device_caps_height, active_caps_width, device_caps_framerate_num, device_caps_framerate_den; + device_caps.get_structure(0).get_int("width", out device_caps_width); + device_caps.get_structure(0).get_int("height", out device_caps_height); + device_caps.get_structure(0).get_fraction("framerate", out device_caps_framerate_num, out device_caps_framerate_den); + Gst.Caps active_caps = get_active_caps(payload_type); + if (active_caps != null && active_caps.get_size() > 0) { + active_caps.get_structure(0).get_int("width", out active_caps_width); + } else { + active_caps_width = device_caps_width; + } + if (new_width == active_caps_width) return; + int new_height = device_caps_height * new_width / device_caps_width; + Gst.Caps new_caps = new Gst.Caps.simple("video/x-raw", "width", typeof(int), new_width, "height", typeof(int), new_height, "framerate", typeof(Gst.Fraction), device_caps_framerate_num, device_caps_framerate_den, null); + double required_bitrate = get_target_bitrate(new_caps); + if (bitrate < required_bitrate) return; + apply_caps(payload_type, new_caps); + } public void update_bitrate(PayloadType payload_type, uint bitrate) { if (codecs.has_key(payload_type)) { lock(codec_bitrates); @@ -164,6 +214,36 @@ public class Dino.Plugins.Rtp.Device : MediaDevice, Object { } } codec_bitrates[payload_type].remove_all(remove); + if (media == "video") { + if (bitrate < 128) bitrate = 128; + Gst.Caps active_caps = get_active_caps(payload_type); + double max_bitrate = get_target_bitrate(device_caps) * 2; + double current_target_bitrate = get_target_bitrate(active_caps); + int device_caps_width, active_caps_width; + device_caps.get_structure(0).get_int("width", out device_caps_width); + if (active_caps != null && active_caps.get_size() > 0) { + active_caps.get_structure(0).get_int("width", out active_caps_width); + } else { + active_caps_width = device_caps_width; + } + if (bitrate < 0.75 * current_target_bitrate && active_caps_width > common_widths[0]) { + // Lower video resolution + int i = 1; + for(; i < common_widths.length && common_widths[i] < active_caps_width; i++); + apply_width(payload_type, common_widths[i-1], bitrate); + } else if (bitrate > 2 * current_target_bitrate && active_caps_width < device_caps_width) { + // Higher video resolution + int i = 0; + for(; i < common_widths.length && common_widths[i] <= active_caps_width; i++); + if (common_widths[i] > device_caps_width) { + // We never scale up, so just stick with what the device gives + apply_width(payload_type, device_caps_width, bitrate); + } else if (common_widths[i] != active_caps_width) { + apply_width(payload_type, common_widths[i], bitrate); + } + } + if (bitrate > max_bitrate) bitrate = (uint) max_bitrate; + } codec_util.update_bitrate(media, payload_type, codecs[payload_type], bitrate); unlock(codec_bitrates); } @@ -348,10 +428,11 @@ public class Dino.Plugins.Rtp.Device : MediaDevice, Object { element.@set("sync", false); } pipe.add(element); + device_caps = get_best_caps(); if (is_source) { element.@set("do-timestamp", true); filter = Gst.ElementFactory.make("capsfilter", @"caps_filter_$id"); - filter.@set("caps", get_best_caps()); + filter.@set("caps", device_caps); filter.get_static_pad("src").add_probe(Gst.PadProbeType.BLOCK, log_probe); pipe.add(filter); element.link(filter); @@ -377,7 +458,7 @@ public class Dino.Plugins.Rtp.Device : MediaDevice, Object { plugin.echoprobe.link(element); } else { filter = Gst.ElementFactory.make("capsfilter", @"caps_filter_$id"); - filter.@set("caps", get_best_caps()); + filter.@set("caps", device_caps); pipe.add(filter); mixer.link(filter); filter.link(element); |