Remove WebM support (and deps libvpx and opus)

We've had many issues with WebM support and specifically the libvpx library
over the years, mostly due to its poor integration in Godot's buildsystem,
but without anyone really interested in improving this state.

With the new GDExtensions in Godot 4.0, we intend to move video decoding to
first-party extensions, and this would likely be done using something like
libvlc to expose more codecs.

Removing the `webm` module means we can remove libsimplewebm, libvpx and
opus, which we were only used for that purpose. Both libvpx and opus were
fairly complex pieces of the buildsystem, so this is a nice cleanup.

This also removes the compile-time dependency on `yasm`.

Fixes lots of compilation or non-working WebM issues which will be linked
in the PR.

1 files changed, 0 insertions, 142 deletions

diff --git a/thirdparty/opus/silk/control.h b/thirdparty/opus/silk/control.h
deleted file mode 100644
index 747e5426a0..0000000000
--- a/thirdparty/opus/silk/control.h
+++ /dev/null
@@ -1,142 +0,0 @@
-/***********************************************************************
-Copyright (c) 2006-2011, Skype Limited. All rights reserved.
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
-- Redistributions of source code must retain the above copyright notice,
-this list of conditions and the following disclaimer.
-- Redistributions in binary form must reproduce the above copyright
-notice, this list of conditions and the following disclaimer in the
-documentation and/or other materials provided with the distribution.
-- Neither the name of Internet Society, IETF or IETF Trust, nor the
-names of specific contributors, may be used to endorse or promote
-products derived from this software without specific prior written
-permission.
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
-LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
-CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
-SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
-INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
-CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
-ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.
-***********************************************************************/
-
-#ifndef SILK_CONTROL_H
-#define SILK_CONTROL_H
-
-#include "typedef.h"
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-/* Decoder API flags */
-#define FLAG_DECODE_NORMAL                      0
-#define FLAG_PACKET_LOST                        1
-#define FLAG_DECODE_LBRR                        2
-
-/***********************************************/
-/* Structure for controlling encoder operation */
-/***********************************************/
-typedef struct {
-    /* I:   Number of channels; 1/2                                                         */
-    opus_int32 nChannelsAPI;
-
-    /* I:   Number of channels; 1/2                                                         */
-    opus_int32 nChannelsInternal;
-
-    /* I:   Input signal sampling rate in Hertz; 8000/12000/16000/24000/32000/44100/48000   */
-    opus_int32 API_sampleRate;
-
-    /* I:   Maximum internal sampling rate in Hertz; 8000/12000/16000                       */
-    opus_int32 maxInternalSampleRate;
-
-    /* I:   Minimum internal sampling rate in Hertz; 8000/12000/16000                       */
-    opus_int32 minInternalSampleRate;
-
-    /* I:   Soft request for internal sampling rate in Hertz; 8000/12000/16000              */
-    opus_int32 desiredInternalSampleRate;
-
-    /* I:   Number of samples per packet in milliseconds; 10/20/40/60                       */
-    opus_int payloadSize_ms;
-
-    /* I:   Bitrate during active speech in bits/second; internally limited                 */
-    opus_int32 bitRate;
-
-    /* I:   Uplink packet loss in percent (0-100)                                           */
-    opus_int packetLossPercentage;
-
-    /* I:   Complexity mode; 0 is lowest, 10 is highest complexity                          */
-    opus_int complexity;
-
-    /* I:   Flag to enable in-band Forward Error Correction (FEC); 0/1                      */
-    opus_int useInBandFEC;
-
-    /* I:   Flag to enable discontinuous transmission (DTX); 0/1                            */
-    opus_int useDTX;
-
-    /* I:   Flag to use constant bitrate                                                    */
-    opus_int useCBR;
-
-    /* I:   Maximum number of bits allowed for the frame                                    */
-    opus_int maxBits;
-
-    /* I:   Causes a smooth downmix to mono                                                 */
-    opus_int toMono;
-
-    /* I:   Opus encoder is allowing us to switch bandwidth                                 */
-    opus_int opusCanSwitch;
-
-    /* I: Make frames as independent as possible (but still use LPC)                        */
-    opus_int reducedDependency;
-
-    /* O:   Internal sampling rate used, in Hertz; 8000/12000/16000                         */
-    opus_int32 internalSampleRate;
-
-    /* O: Flag that bandwidth switching is allowed (because low voice activity)             */
-    opus_int allowBandwidthSwitch;
-
-    /* O:   Flag that SILK runs in WB mode without variable LP filter (use for switching between WB/SWB/FB) */
-    opus_int inWBmodeWithoutVariableLP;
-
-    /* O:   Stereo width */
-    opus_int stereoWidth_Q14;
-
-    /* O:   Tells the Opus encoder we're ready to switch                                    */
-    opus_int switchReady;
-
-} silk_EncControlStruct;
-
-/**************************************************************************/
-/* Structure for controlling decoder operation and reading decoder status */
-/**************************************************************************/
-typedef struct {
-    /* I:   Number of channels; 1/2                                                         */
-    opus_int32 nChannelsAPI;
-
-    /* I:   Number of channels; 1/2                                                         */
-    opus_int32 nChannelsInternal;
-
-    /* I:   Output signal sampling rate in Hertz; 8000/12000/16000/24000/32000/44100/48000  */
-    opus_int32 API_sampleRate;
-
-    /* I:   Internal sampling rate used, in Hertz; 8000/12000/16000                         */
-    opus_int32 internalSampleRate;
-
-    /* I:   Number of samples per packet in milliseconds; 10/20/40/60                       */
-    opus_int payloadSize_ms;
-
-    /* O:   Pitch lag of previous frame (0 if unvoiced), measured in samples at 48 kHz      */
-    opus_int prevPitchLag;
-} silk_DecControlStruct;
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif