Implement Opus bandwidth adjustment behind a FieldTrial
Bug: webrtc:8522
Change-Id: I3a32ebfecd27ff74b507c2cee9e16aab17153442
Reviewed-on: https://webrtc-review.googlesource.com/22210
Commit-Queue: Alejandro Luebs <aluebs@webrtc.org>
Reviewed-by: Henrik Lundin <henrik.lundin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20799}diff --git a/modules/audio_coding/codecs/opus/opus_interface.h b/modules/audio_coding/codecs/opus/opus_interface.h
index 13e2ee3..4b8e892 100644
--- a/modules/audio_coding/codecs/opus/opus_interface.h
+++ b/modules/audio_coding/codecs/opus/opus_interface.h
@@ -13,6 +13,7 @@
#include <stddef.h>
+#include "modules/audio_coding/codecs/opus/opus_inst.h"
#include "typedefs.h" // NOLINT(build/include)
#ifdef __cplusplus
@@ -222,6 +223,40 @@
int16_t WebRtcOpus_SetComplexity(OpusEncInst* inst, int32_t complexity);
/*
+ * WebRtcOpus_GetBandwidth(...)
+ *
+ * This function returns the current bandwidth.
+ *
+ * Input:
+ * - inst : Encoder context
+ *
+ * Return value : Bandwidth - Success
+ * -1 - Error
+ */
+int32_t WebRtcOpus_GetBandwidth(OpusEncInst* inst);
+
+/*
+ * WebRtcOpus_SetBandwidth(...)
+ *
+ * By default Opus decides which bandwidth to encode the signal in depending on
+ * the the bitrate. This function overrules the previous setting and forces the
+ * encoder to encode in narrowband/wideband/fullband/etc.
+ *
+ * Input:
+ * - inst : Encoder context
+ * - bandwidth : New target bandwidth. Valid values are:
+ * OPUS_BANDWIDTH_NARROWBAND
+ * OPUS_BANDWIDTH_MEDIUMBAND
+ * OPUS_BANDWIDTH_WIDEBAND
+ * OPUS_BANDWIDTH_SUPERWIDEBAND
+ * OPUS_BANDWIDTH_FULLBAND
+ *
+ * Return value : 0 - Success
+ * -1 - Error
+ */
+int16_t WebRtcOpus_SetBandwidth(OpusEncInst* inst, int32_t bandwidth);
+
+/*
* WebRtcOpus_SetForceChannels(...)
*
* If the encoder is initialized as a stereo encoder, Opus will by default