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, 479 deletions

diff --git a/thirdparty/libvpx/vpx/vpx_codec.h b/thirdparty/libvpx/vpx/vpx_codec.h
deleted file mode 100644
index b6037bb4d7..0000000000
--- a/thirdparty/libvpx/vpx/vpx_codec.h
+++ /dev/null
@@ -1,479 +0,0 @@
-/*
- *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree. An additional intellectual property rights grant can be found
- *  in the file PATENTS.  All contributing project authors may
- *  be found in the AUTHORS file in the root of the source tree.
- */
-
-
-/*!\defgroup codec Common Algorithm Interface
- * This abstraction allows applications to easily support multiple video
- * formats with minimal code duplication. This section describes the interface
- * common to all codecs (both encoders and decoders).
- * @{
- */
-
-/*!\file
- * \brief Describes the codec algorithm interface to applications.
- *
- * This file describes the interface between an application and a
- * video codec algorithm.
- *
- * An application instantiates a specific codec instance by using
- * vpx_codec_init() and a pointer to the algorithm's interface structure:
- *     <pre>
- *     my_app.c:
- *       extern vpx_codec_iface_t my_codec;
- *       {
- *           vpx_codec_ctx_t algo;
- *           res = vpx_codec_init(&algo, &my_codec);
- *       }
- *     </pre>
- *
- * Once initialized, the instance is manged using other functions from
- * the vpx_codec_* family.
- */
-#ifndef VPX_VPX_CODEC_H_
-#define VPX_VPX_CODEC_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include "./vpx_integer.h"
-#include "./vpx_image.h"
-
-  /*!\brief Decorator indicating a function is deprecated */
-#ifndef DEPRECATED
-#if defined(__GNUC__) && __GNUC__
-#define DEPRECATED          __attribute__ ((deprecated))
-#elif defined(_MSC_VER)
-#define DEPRECATED
-#else
-#define DEPRECATED
-#endif
-#endif  /* DEPRECATED */
-
-#ifndef DECLSPEC_DEPRECATED
-#if defined(__GNUC__) && __GNUC__
-#define DECLSPEC_DEPRECATED /**< \copydoc #DEPRECATED */
-#elif defined(_MSC_VER)
-#define DECLSPEC_DEPRECATED __declspec(deprecated) /**< \copydoc #DEPRECATED */
-#else
-#define DECLSPEC_DEPRECATED /**< \copydoc #DEPRECATED */
-#endif
-#endif  /* DECLSPEC_DEPRECATED */
-
-  /*!\brief Decorator indicating a function is potentially unused */
-#ifdef UNUSED
-#elif defined(__GNUC__) || defined(__clang__)
-#define UNUSED __attribute__ ((unused))
-#else
-#define UNUSED
-#endif
-
-  /*!\brief Current ABI version number
-   *
-   * \internal
-   * If this file is altered in any way that changes the ABI, this value
-   * must be bumped.  Examples include, but are not limited to, changing
-   * types, removing or reassigning enums, adding/removing/rearranging
-   * fields to structures
-   */
-#define VPX_CODEC_ABI_VERSION (3 + VPX_IMAGE_ABI_VERSION) /**<\hideinitializer*/
-
-  /*!\brief Algorithm return codes */
-  typedef enum {
-    /*!\brief Operation completed without error */
-    VPX_CODEC_OK,
-
-    /*!\brief Unspecified error */
-    VPX_CODEC_ERROR,
-
-    /*!\brief Memory operation failed */
-    VPX_CODEC_MEM_ERROR,
-
-    /*!\brief ABI version mismatch */
-    VPX_CODEC_ABI_MISMATCH,
-
-    /*!\brief Algorithm does not have required capability */
-    VPX_CODEC_INCAPABLE,
-
-    /*!\brief The given bitstream is not supported.
-     *
-     * The bitstream was unable to be parsed at the highest level. The decoder
-     * is unable to proceed. This error \ref SHOULD be treated as fatal to the
-     * stream. */
-    VPX_CODEC_UNSUP_BITSTREAM,
-
-    /*!\brief Encoded bitstream uses an unsupported feature
-     *
-     * The decoder does not implement a feature required by the encoder. This
-     * return code should only be used for features that prevent future
-     * pictures from being properly decoded. This error \ref MAY be treated as
-     * fatal to the stream or \ref MAY be treated as fatal to the current GOP.
-     */
-    VPX_CODEC_UNSUP_FEATURE,
-
-    /*!\brief The coded data for this stream is corrupt or incomplete
-     *
-     * There was a problem decoding the current frame.  This return code
-     * should only be used for failures that prevent future pictures from
-     * being properly decoded. This error \ref MAY be treated as fatal to the
-     * stream or \ref MAY be treated as fatal to the current GOP. If decoding
-     * is continued for the current GOP, artifacts may be present.
-     */
-    VPX_CODEC_CORRUPT_FRAME,
-
-    /*!\brief An application-supplied parameter is not valid.
-     *
-     */
-    VPX_CODEC_INVALID_PARAM,
-
-    /*!\brief An iterator reached the end of list.
-     *
-     */
-    VPX_CODEC_LIST_END
-
-  }
-  vpx_codec_err_t;
-
-
-  /*! \brief Codec capabilities bitfield
-   *
-   *  Each codec advertises the capabilities it supports as part of its
-   *  ::vpx_codec_iface_t interface structure. Capabilities are extra interfaces
-   *  or functionality, and are not required to be supported.
-   *
-   *  The available flags are specified by VPX_CODEC_CAP_* defines.
-   */
-  typedef long vpx_codec_caps_t;
-#define VPX_CODEC_CAP_DECODER 0x1 /**< Is a decoder */
-#define VPX_CODEC_CAP_ENCODER 0x2 /**< Is an encoder */
-
-
-  /*! \brief Initialization-time Feature Enabling
-   *
-   *  Certain codec features must be known at initialization time, to allow for
-   *  proper memory allocation.
-   *
-   *  The available flags are specified by VPX_CODEC_USE_* defines.
-   */
-  typedef long vpx_codec_flags_t;
-
-
-  /*!\brief Codec interface structure.
-   *
-   * Contains function pointers and other data private to the codec
-   * implementation. This structure is opaque to the application.
-   */
-  typedef const struct vpx_codec_iface vpx_codec_iface_t;
-
-
-  /*!\brief Codec private data structure.
-   *
-   * Contains data private to the codec implementation. This structure is opaque
-   * to the application.
-   */
-  typedef       struct vpx_codec_priv  vpx_codec_priv_t;
-
-
-  /*!\brief Iterator
-   *
-   * Opaque storage used for iterating over lists.
-   */
-  typedef const void *vpx_codec_iter_t;
-
-
-  /*!\brief Codec context structure
-   *
-   * All codecs \ref MUST support this context structure fully. In general,
-   * this data should be considered private to the codec algorithm, and
-   * not be manipulated or examined by the calling application. Applications
-   * may reference the 'name' member to get a printable description of the
-   * algorithm.
-   */
-  typedef struct vpx_codec_ctx {
-    const char              *name;        /**< Printable interface name */
-    vpx_codec_iface_t       *iface;       /**< Interface pointers */
-    vpx_codec_err_t          err;         /**< Last returned error */
-    const char              *err_detail;  /**< Detailed info, if available */
-    vpx_codec_flags_t        init_flags;  /**< Flags passed at init time */
-    union {
-      /**< Decoder Configuration Pointer */
-      const struct vpx_codec_dec_cfg *dec;
-      /**< Encoder Configuration Pointer */
-      const struct vpx_codec_enc_cfg *enc;
-      const void                     *raw;
-    }                        config;      /**< Configuration pointer aliasing union */
-    vpx_codec_priv_t        *priv;        /**< Algorithm private storage */
-  } vpx_codec_ctx_t;
-
-  /*!\brief Bit depth for codec
-   * *
-   * This enumeration determines the bit depth of the codec.
-   */
-  typedef enum vpx_bit_depth {
-    VPX_BITS_8  =  8,  /**<  8 bits */
-    VPX_BITS_10 = 10,  /**< 10 bits */
-    VPX_BITS_12 = 12,  /**< 12 bits */
-  } vpx_bit_depth_t;
-
-  /*
-   * Library Version Number Interface
-   *
-   * For example, see the following sample return values:
-   *     vpx_codec_version()           (1<<16 | 2<<8 | 3)
-   *     vpx_codec_version_str()       "v1.2.3-rc1-16-gec6a1ba"
-   *     vpx_codec_version_extra_str() "rc1-16-gec6a1ba"
-   */
-
-  /*!\brief Return the version information (as an integer)
-   *
-   * Returns a packed encoding of the library version number. This will only include
-   * the major.minor.patch component of the version number. Note that this encoded
-   * value should be accessed through the macros provided, as the encoding may change
-   * in the future.
-   *
-   */
-  int vpx_codec_version(void);
-#define VPX_VERSION_MAJOR(v) ((v>>16)&0xff) /**< extract major from packed version */
-#define VPX_VERSION_MINOR(v) ((v>>8)&0xff)  /**< extract minor from packed version */
-#define VPX_VERSION_PATCH(v) ((v>>0)&0xff)  /**< extract patch from packed version */
-
-  /*!\brief Return the version major number */
-#define vpx_codec_version_major() ((vpx_codec_version()>>16)&0xff)
-
-  /*!\brief Return the version minor number */
-#define vpx_codec_version_minor() ((vpx_codec_version()>>8)&0xff)
-
-  /*!\brief Return the version patch number */
-#define vpx_codec_version_patch() ((vpx_codec_version()>>0)&0xff)
-
-
-  /*!\brief Return the version information (as a string)
-   *
-   * Returns a printable string containing the full library version number. This may
-   * contain additional text following the three digit version number, as to indicate
-   * release candidates, prerelease versions, etc.
-   *
-   */
-  const char *vpx_codec_version_str(void);
-
-
-  /*!\brief Return the version information (as a string)
-   *
-   * Returns a printable "extra string". This is the component of the string returned
-   * by vpx_codec_version_str() following the three digit version number.
-   *
-   */
-  const char *vpx_codec_version_extra_str(void);
-
-
-  /*!\brief Return the build configuration
-   *
-   * Returns a printable string containing an encoded version of the build
-   * configuration. This may be useful to vpx support.
-   *
-   */
-  const char *vpx_codec_build_config(void);
-
-
-  /*!\brief Return the name for a given interface
-   *
-   * Returns a human readable string for name of the given codec interface.
-   *
-   * \param[in]    iface     Interface pointer
-   *
-   */
-  const char *vpx_codec_iface_name(vpx_codec_iface_t *iface);
-
-
-  /*!\brief Convert error number to printable string
-   *
-   * Returns a human readable string for the last error returned by the
-   * algorithm. The returned error will be one line and will not contain
-   * any newline characters.
-   *
-   *
-   * \param[in]    err     Error number.
-   *
-   */
-  const char *vpx_codec_err_to_string(vpx_codec_err_t  err);
-
-
-  /*!\brief Retrieve error synopsis for codec context
-   *
-   * Returns a human readable string for the last error returned by the
-   * algorithm. The returned error will be one line and will not contain
-   * any newline characters.
-   *
-   *
-   * \param[in]    ctx     Pointer to this instance's context.
-   *
-   */
-  const char *vpx_codec_error(vpx_codec_ctx_t  *ctx);
-
-
-  /*!\brief Retrieve detailed error information for codec context
-   *
-   * Returns a human readable string providing detailed information about
-   * the last error.
-   *
-   * \param[in]    ctx     Pointer to this instance's context.
-   *
-   * \retval NULL
-   *     No detailed information is available.
-   */
-  const char *vpx_codec_error_detail(vpx_codec_ctx_t  *ctx);
-
-
-  /* REQUIRED FUNCTIONS
-   *
-   * The following functions are required to be implemented for all codecs.
-   * They represent the base case functionality expected of all codecs.
-   */
-
-  /*!\brief Destroy a codec instance
-   *
-   * Destroys a codec context, freeing any associated memory buffers.
-   *
-   * \param[in] ctx   Pointer to this instance's context
-   *
-   * \retval #VPX_CODEC_OK
-   *     The codec algorithm initialized.
-   * \retval #VPX_CODEC_MEM_ERROR
-   *     Memory allocation failed.
-   */
-  vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx);
-
-
-  /*!\brief Get the capabilities of an algorithm.
-   *
-   * Retrieves the capabilities bitfield from the algorithm's interface.
-   *
-   * \param[in] iface   Pointer to the algorithm interface
-   *
-   */
-  vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface);
-
-
-  /*!\brief Control algorithm
-   *
-   * This function is used to exchange algorithm specific data with the codec
-   * instance. This can be used to implement features specific to a particular
-   * algorithm.
-   *
-   * This wrapper function dispatches the request to the helper function
-   * associated with the given ctrl_id. It tries to call this function
-   * transparently, but will return #VPX_CODEC_ERROR if the request could not
-   * be dispatched.
-   *
-   * Note that this function should not be used directly. Call the
-   * #vpx_codec_control wrapper macro instead.
-   *
-   * \param[in]     ctx              Pointer to this instance's context
-   * \param[in]     ctrl_id          Algorithm specific control identifier
-   *
-   * \retval #VPX_CODEC_OK
-   *     The control request was processed.
-   * \retval #VPX_CODEC_ERROR
-   *     The control request was not processed.
-   * \retval #VPX_CODEC_INVALID_PARAM
-   *     The data was not valid.
-   */
-  vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t  *ctx,
-                                     int               ctrl_id,
-                                     ...);
-#if defined(VPX_DISABLE_CTRL_TYPECHECKS) && VPX_DISABLE_CTRL_TYPECHECKS
-#    define vpx_codec_control(ctx,id,data) vpx_codec_control_(ctx,id,data)
-#    define VPX_CTRL_USE_TYPE(id, typ)
-#    define VPX_CTRL_USE_TYPE_DEPRECATED(id, typ)
-#    define VPX_CTRL_VOID(id, typ)
-
-#else
-  /*!\brief vpx_codec_control wrapper macro
-   *
-   * This macro allows for type safe conversions across the variadic parameter
-   * to vpx_codec_control_().
-   *
-   * \internal
-   * It works by dispatching the call to the control function through a wrapper
-   * function named with the id parameter.
-   */
-#    define vpx_codec_control(ctx,id,data) vpx_codec_control_##id(ctx,id,data)\
-  /**<\hideinitializer*/
-
-
-  /*!\brief vpx_codec_control type definition macro
-   *
-   * This macro allows for type safe conversions across the variadic parameter
-   * to vpx_codec_control_(). It defines the type of the argument for a given
-   * control identifier.
-   *
-   * \internal
-   * It defines a static function with
-   * the correctly typed arguments as a wrapper to the type-unsafe internal
-   * function.
-   */
-#    define VPX_CTRL_USE_TYPE(id, typ) \
-  static vpx_codec_err_t \
-  vpx_codec_control_##id(vpx_codec_ctx_t*, int, typ) UNUSED;\
-  \
-  static vpx_codec_err_t \
-  vpx_codec_control_##id(vpx_codec_ctx_t  *ctx, int ctrl_id, typ data) {\
-    return vpx_codec_control_(ctx, ctrl_id, data);\
-  } /**<\hideinitializer*/
-
-
-  /*!\brief vpx_codec_control deprecated type definition macro
-   *
-   * Like #VPX_CTRL_USE_TYPE, but indicates that the specified control is
-   * deprecated and should not be used. Consult the documentation for your
-   * codec for more information.
-   *
-   * \internal
-   * It defines a static function with the correctly typed arguments as a
-   * wrapper to the type-unsafe internal function.
-   */
-#    define VPX_CTRL_USE_TYPE_DEPRECATED(id, typ) \
-  DECLSPEC_DEPRECATED static vpx_codec_err_t \
-  vpx_codec_control_##id(vpx_codec_ctx_t*, int, typ) DEPRECATED UNUSED;\
-  \
-  DECLSPEC_DEPRECATED static vpx_codec_err_t \
-  vpx_codec_control_##id(vpx_codec_ctx_t  *ctx, int ctrl_id, typ data) {\
-    return vpx_codec_control_(ctx, ctrl_id, data);\
-  } /**<\hideinitializer*/
-
-
-  /*!\brief vpx_codec_control void type definition macro
-   *
-   * This macro allows for type safe conversions across the variadic parameter
-   * to vpx_codec_control_(). It indicates that a given control identifier takes
-   * no argument.
-   *
-   * \internal
-   * It defines a static function without a data argument as a wrapper to the
-   * type-unsafe internal function.
-   */
-#    define VPX_CTRL_VOID(id) \
-  static vpx_codec_err_t \
-  vpx_codec_control_##id(vpx_codec_ctx_t*, int) UNUSED;\
-  \
-  static vpx_codec_err_t \
-  vpx_codec_control_##id(vpx_codec_ctx_t  *ctx, int ctrl_id) {\
-    return vpx_codec_control_(ctx, ctrl_id);\
-  } /**<\hideinitializer*/
-
-
-#endif
-
-  /*!@} - end defgroup codec*/
-#ifdef __cplusplus
-}
-#endif
-#endif  // VPX_VPX_CODEC_H_
-