Port folder renaming changes from AOM

Manually cherry-picked commits:
ceef0583 libvpx->libaom part2
3d26d916 libvpx -> libaom
cfea7dd7 vp10/ -> av1/
3a8eff73 Fix a build issue for a test
bf4202ed Rename vpx to aom

Change-Id: I1b0eb5a40796e3aaf41c58984b4229a439a597dc

.gitignore

@@ -45,8 +45,8 @@
 /ivfdec.dox
 /ivfenc
 /ivfenc.dox
-/libvpx.so*
-/libvpx.ver
+/libaom.so*
+/libaom.ver
 /samples.dox
 /test_intra_pred_speed
 /test_libvpx

README

@@ -33,13 +33,13 @@ COMPILING THE APPLICATIONS/LIBRARIES:
 
     $ mkdir build
     $ cd build
-    $ ../libvpx/configure <options>
+    $ ../libaom/configure <options>
     $ make
 
   3. Configuration options
   The 'configure' script supports a number of options. The --help option can be
   used to get a list of supported options:
-    $ ../libvpx/configure --help
+    $ ../libaom/configure --help
 
   4. Cross development
   For cross development, the most notable option is the --target option. The
@@ -108,7 +108,7 @@ COMPILING THE APPLICATIONS/LIBRARIES:
   toolchain, the following command could be used (note, POSIX SH syntax, adapt
   to your shell as necessary):
 
-    $ CROSS=mipsel-linux-uclibc- ../libvpx/configure
+    $ CROSS=mipsel-linux-uclibc- ../libaom/configure
 
   In addition, the executables to be invoked can be overridden by specifying the
   environment variables: CC, AR, LD, AS, STRIP, NM. Additional flags can be
@@ -125,7 +125,7 @@ VP8/VP9 TEST VECTORS:
   LIBVPX_TEST_DATA_PATH environment variable can be used.
 
   $ ./configure --enable-unit-tests
-  $ LIBVPX_TEST_DATA_PATH=../libvpx-test-data make testdata
+  $ LIBVPX_TEST_DATA_PATH=../-test-data make testdata
 
 CODE STYLE:
   The coding style used by this project is enforced with clang-format using the

aom/internal/vpx_codec_internal.h

+/*
+ *  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.
+ */
+
+/*!\file
+ * \brief Describes the decoder algorithm interface for algorithm
+ *        implementations.
+ *
+ * This file defines the private structures and data types that are only
+ * relevant to implementing an algorithm, as opposed to using it.
+ *
+ * To create a decoder algorithm class, an interface structure is put
+ * into the global namespace:
+ *     <pre>
+ *     my_codec.c:
+ *       vpx_codec_iface_t my_codec = {
+ *           "My Codec v1.0",
+ *           VPX_CODEC_ALG_ABI_VERSION,
+ *           ...
+ *       };
+ *     </pre>
+ *
+ * An application instantiates a specific decoder 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_INTERNAL_VPX_CODEC_INTERNAL_H_
+#define VPX_INTERNAL_VPX_CODEC_INTERNAL_H_
+#include "../vpx_decoder.h"
+#include "../vpx_encoder.h"
+#include <stdarg.h>
+
+#ifdef __cplusplus
+extern "C" {
+#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_INTERNAL_ABI_VERSION (5) /**<\hideinitializer*/
+
+typedef struct vpx_codec_alg_priv vpx_codec_alg_priv_t;
+typedef struct vpx_codec_priv_enc_mr_cfg vpx_codec_priv_enc_mr_cfg_t;
+
+/*!\brief init function pointer prototype
+ *
+ * Performs algorithm-specific initialization of the decoder context. This
+ * function is called by the generic vpx_codec_init() wrapper function, so
+ * plugins implementing this interface may trust the input parameters to be
+ * properly initialized.
+ *
+ * \param[in] ctx   Pointer to this instance's context
+ * \retval #VPX_CODEC_OK
+ *     The input stream was recognized and decoder initialized.
+ * \retval #VPX_CODEC_MEM_ERROR
+ *     Memory operation failed.
+ */
+typedef vpx_codec_err_t (*vpx_codec_init_fn_t)(
+    vpx_codec_ctx_t *ctx, vpx_codec_priv_enc_mr_cfg_t *data);
+
+/*!\brief destroy function pointer prototype
+ *
+ * Performs algorithm-specific destruction of the decoder context. This
+ * function is called by the generic vpx_codec_destroy() wrapper function,
+ * so plugins implementing this interface may trust the input parameters
+ * to be properly initialized.
+ *
+ * \param[in] ctx   Pointer to this instance's context
+ * \retval #VPX_CODEC_OK
+ *     The input stream was recognized and decoder initialized.
+ * \retval #VPX_CODEC_MEM_ERROR
+ *     Memory operation failed.
+ */
+typedef vpx_codec_err_t (*vpx_codec_destroy_fn_t)(vpx_codec_alg_priv_t *ctx);
+
+/*!\brief parse stream info function pointer prototype
+ *
+ * Performs high level parsing of the bitstream. This function is called by the
+ * generic vpx_codec_peek_stream_info() wrapper function, so plugins
+ * implementing this interface may trust the input parameters to be properly
+ * initialized.
+ *
+ * \param[in]      data    Pointer to a block of data to parse
+ * \param[in]      data_sz Size of the data buffer
+ * \param[in,out]  si      Pointer to stream info to update. The size member
+ *                         \ref MUST be properly initialized, but \ref MAY be
+ *                         clobbered by the algorithm. This parameter \ref MAY
+ *                         be NULL.
+ *
+ * \retval #VPX_CODEC_OK
+ *     Bitstream is parsable and stream information updated
+ */
+typedef vpx_codec_err_t (*vpx_codec_peek_si_fn_t)(const uint8_t *data,
+                                                  unsigned int data_sz,
+                                                  vpx_codec_stream_info_t *si);
+
+/*!\brief Return information about the current stream.
+ *
+ * Returns information about the stream that has been parsed during decoding.
+ *
+ * \param[in]      ctx     Pointer to this instance's context
+ * \param[in,out]  si      Pointer to stream info to update. The size member
+ *                         \ref MUST be properly initialized, but \ref MAY be
+ *                         clobbered by the algorithm. This parameter \ref MAY
+ *                         be NULL.
+ *
+ * \retval #VPX_CODEC_OK
+ *     Bitstream is parsable and stream information updated
+ */
+typedef vpx_codec_err_t (*vpx_codec_get_si_fn_t)(vpx_codec_alg_priv_t *ctx,
+                                                 vpx_codec_stream_info_t *si);
+
+/*!\brief control function pointer prototype
+ *
+ * This function is used to exchange algorithm specific data with the decoder
+ * instance. This can be used to implement features specific to a particular
+ * algorithm.
+ *
+ * This function is called by the generic vpx_codec_control() wrapper
+ * function, so plugins implementing this interface may trust the input
+ * parameters to be properly initialized. However,  this interface does not
+ * provide type safety for the exchanged data or assign meanings to the
+ * control codes. Those details should be specified in the algorithm's
+ * header file. In particular, the ctrl_id parameter is guaranteed to exist
+ * in the algorithm's control mapping table, and the data parameter may be NULL.
+ *
+ *
+ * \param[in]     ctx              Pointer to this instance's context
+ * \param[in]     ctrl_id          Algorithm specific control identifier
+ * \param[in,out] data             Data to exchange with algorithm instance.
+ *
+ * \retval #VPX_CODEC_OK
+ *     The internal state data was deserialized.
+ */
+typedef vpx_codec_err_t (*vpx_codec_control_fn_t)(vpx_codec_alg_priv_t *ctx,
+                                                  va_list ap);
+
+/*!\brief control function pointer mapping
+ *
+ * This structure stores the mapping between control identifiers and
+ * implementing functions. Each algorithm provides a list of these
+ * mappings. This list is searched by the vpx_codec_control() wrapper
+ * function to determine which function to invoke. The special
+ * value {0, NULL} is used to indicate end-of-list, and must be
+ * present. The special value {0, <non-null>} can be used as a catch-all
+ * mapping. This implies that ctrl_id values chosen by the algorithm
+ * \ref MUST be non-zero.
+ */
+typedef const struct vpx_codec_ctrl_fn_map {
+  int ctrl_id;
+  vpx_codec_control_fn_t fn;
+} vpx_codec_ctrl_fn_map_t;
+
+/*!\brief decode data function pointer prototype
+ *
+ * Processes a buffer of coded data. If the processing results in a new
+ * decoded frame becoming available, #VPX_CODEC_CB_PUT_SLICE and
+ * #VPX_CODEC_CB_PUT_FRAME events are generated as appropriate. This
+ * function is called by the generic vpx_codec_decode() wrapper function,
+ * so plugins implementing this interface may trust the input parameters
+ * to be properly initialized.
+ *
+ * \param[in] ctx          Pointer to this instance's context
+ * \param[in] data         Pointer to this block of new coded data. If
+ *                         NULL, a #VPX_CODEC_CB_PUT_FRAME event is posted
+ *                         for the previously decoded frame.
+ * \param[in] data_sz      Size of the coded data, in bytes.
+ *
+ * \return Returns #VPX_CODEC_OK if the coded data was processed completely
+ *         and future pictures can be decoded without error. Otherwise,
+ *         see the descriptions of the other error codes in ::vpx_codec_err_t
+ *         for recoverability capabilities.
+ */
+typedef vpx_codec_err_t (*vpx_codec_decode_fn_t)(vpx_codec_alg_priv_t *ctx,
+                                                 const uint8_t *data,
+                                                 unsigned int data_sz,
+                                                 void *user_priv,
+                                                 long deadline);
+
+/*!\brief Decoded frames iterator
+ *
+ * Iterates over a list of the frames available for display. The iterator
+ * storage should be initialized to NULL to start the iteration. Iteration is
+ * complete when this function returns NULL.
+ *
+ * The list of available frames becomes valid upon completion of the
+ * vpx_codec_decode call, and remains valid until the next call to
+ * vpx_codec_decode.
+ *
+ * \param[in]     ctx      Pointer to this instance's context
+ * \param[in out] iter     Iterator storage, initialized to NULL
+ *
+ * \return Returns a pointer to an image, if one is ready for display. Frames
+ *         produced will always be in PTS (presentation time stamp) order.
+ */
+typedef vpx_image_t *(*vpx_codec_get_frame_fn_t)(vpx_codec_alg_priv_t *ctx,
+                                                 vpx_codec_iter_t *iter);
+
+/*!\brief Pass in external frame buffers for the decoder to use.
+ *
+ * Registers functions to be called when libaom needs a frame buffer
+ * to decode the current frame and a function to be called when libaom does
+ * not internally reference the frame buffer. This set function must
+ * be called before the first call to decode or libaom will assume the
+ * default behavior of allocating frame buffers internally.
+ *
+ * \param[in] ctx          Pointer to this instance's context
+ * \param[in] cb_get       Pointer to the get callback function
+ * \param[in] cb_release   Pointer to the release callback function
+ * \param[in] cb_priv      Callback's private data
+ *
+ * \retval #VPX_CODEC_OK
+ *     External frame buffers will be used by libaom.
+ * \retval #VPX_CODEC_INVALID_PARAM
+ *     One or more of the callbacks were NULL.
+ * \retval #VPX_CODEC_ERROR
+ *     Decoder context not initialized, or algorithm not capable of
+ *     using external frame buffers.
+ *
+ * \note
+ * When decoding VP9, the application may be required to pass in at least
+ * #VPX_MAXIMUM_WORK_BUFFERS external frame
+ * buffers.
+ */
+typedef vpx_codec_err_t (*vpx_codec_set_fb_fn_t)(
+    vpx_codec_alg_priv_t *ctx, vpx_get_frame_buffer_cb_fn_t cb_get,
+    vpx_release_frame_buffer_cb_fn_t cb_release, void *cb_priv);
+
+typedef vpx_codec_err_t (*vpx_codec_encode_fn_t)(vpx_codec_alg_priv_t *ctx,
+                                                 const vpx_image_t *img,
+                                                 vpx_codec_pts_t pts,
+                                                 unsigned long duration,
+                                                 vpx_enc_frame_flags_t flags,
+                                                 unsigned long deadline);
+typedef const vpx_codec_cx_pkt_t *(*vpx_codec_get_cx_data_fn_t)(
+    vpx_codec_alg_priv_t *ctx, vpx_codec_iter_t *iter);
+
+typedef vpx_codec_err_t (*vpx_codec_enc_config_set_fn_t)(
+    vpx_codec_alg_priv_t *ctx, const vpx_codec_enc_cfg_t *cfg);
+typedef vpx_fixed_buf_t *(*vpx_codec_get_global_headers_fn_t)(
+    vpx_codec_alg_priv_t *ctx);
+
+typedef vpx_image_t *(*vpx_codec_get_preview_frame_fn_t)(
+    vpx_codec_alg_priv_t *ctx);
+
+typedef vpx_codec_err_t (*vpx_codec_enc_mr_get_mem_loc_fn_t)(
+    const vpx_codec_enc_cfg_t *cfg, void **mem_loc);
+
+/*!\brief usage configuration mapping
+ *
+ * This structure stores the mapping between usage identifiers and
+ * configuration structures. Each algorithm provides a list of these
+ * mappings. This list is searched by the vpx_codec_enc_config_default()
+ * wrapper function to determine which config to return. The special value
+ * {-1, {0}} is used to indicate end-of-list, and must be present. At least
+ * one mapping must be present, in addition to the end-of-list.
+ *
+ */
+typedef const struct vpx_codec_enc_cfg_map {
+  int usage;
+  vpx_codec_enc_cfg_t cfg;
+} vpx_codec_enc_cfg_map_t;
+
+/*!\brief Decoder algorithm interface interface
+ *
+ * All decoders \ref MUST expose a variable of this type.
+ */
+struct vpx_codec_iface {
+  const char *name;                   /**< Identification String  */
+  int abi_version;                    /**< Implemented ABI version */
+  vpx_codec_caps_t caps;              /**< Decoder capabilities */
+  vpx_codec_init_fn_t init;           /**< \copydoc ::vpx_codec_init_fn_t */
+  vpx_codec_destroy_fn_t destroy;     /**< \copydoc ::vpx_codec_destroy_fn_t */
+  vpx_codec_ctrl_fn_map_t *ctrl_maps; /**< \copydoc ::vpx_codec_ctrl_fn_map_t */
+  struct vpx_codec_dec_iface {
+    vpx_codec_peek_si_fn_t peek_si; /**< \copydoc ::vpx_codec_peek_si_fn_t */
+    vpx_codec_get_si_fn_t get_si;   /**< \copydoc ::vpx_codec_get_si_fn_t */
+    vpx_codec_decode_fn_t decode;   /**< \copydoc ::vpx_codec_decode_fn_t */
+    vpx_codec_get_frame_fn_t
+        get_frame;                   /**< \copydoc ::vpx_codec_get_frame_fn_t */
+    vpx_codec_set_fb_fn_t set_fb_fn; /**< \copydoc ::vpx_codec_set_fb_fn_t */
+  } dec;
+  struct vpx_codec_enc_iface {
+    int cfg_map_count;
+    vpx_codec_enc_cfg_map_t
+        *cfg_maps;                /**< \copydoc ::vpx_codec_enc_cfg_map_t */
+    vpx_codec_encode_fn_t encode; /**< \copydoc ::vpx_codec_encode_fn_t */
+    vpx_codec_get_cx_data_fn_t
+        get_cx_data; /**< \copydoc ::vpx_codec_get_cx_data_fn_t */
+    vpx_codec_enc_config_set_fn_t
+        cfg_set; /**< \copydoc ::vpx_codec_enc_config_set_fn_t */
+    vpx_codec_get_global_headers_fn_t
+        get_glob_hdrs; /**< \copydoc ::vpx_codec_get_global_headers_fn_t */
+    vpx_codec_get_preview_frame_fn_t
+        get_preview; /**< \copydoc ::vpx_codec_get_preview_frame_fn_t */
+    vpx_codec_enc_mr_get_mem_loc_fn_t
+        mr_get_mem_loc; /**< \copydoc ::vpx_codec_enc_mr_get_mem_loc_fn_t */
+  } enc;
+};
+
+/*!\brief Callback function pointer / user data pair storage */
+typedef struct vpx_codec_priv_cb_pair {
+  union {
+    vpx_codec_put_frame_cb_fn_t put_frame;
+    vpx_codec_put_slice_cb_fn_t put_slice;
+  } u;
+  void *user_priv;
+} vpx_codec_priv_cb_pair_t;
+
+/*!\brief Instance private storage
+ *
+ * This structure is allocated by the algorithm's init function. It can be
+ * extended in one of two ways. First, a second, algorithm specific structure
+ * can be allocated and the priv member pointed to it. Alternatively, this
+ * structure can be made the first member of the algorithm specific structure,
+ * and the pointer cast to the proper type.
+ */
+struct vpx_codec_priv {
+  const char *err_detail;
+  vpx_codec_flags_t init_flags;
+  struct {
+    vpx_codec_priv_cb_pair_t put_frame_cb;
+    vpx_codec_priv_cb_pair_t put_slice_cb;
+  } dec;
+  struct {
+    vpx_fixed_buf_t cx_data_dst_buf;
+    unsigned int cx_data_pad_before;
+    unsigned int cx_data_pad_after;
+    vpx_codec_cx_pkt_t cx_data_pkt;
+    unsigned int total_encoders;
+  } enc;
+};
+
+/*
+ * Multi-resolution encoding internal configuration
+ */
+struct vpx_codec_priv_enc_mr_cfg {
+  unsigned int mr_total_resolutions;
+  unsigned int mr_encoder_id;
+  struct vpx_rational mr_down_sampling_factor;
+  void *mr_low_res_mode_info;
+};
+
+#undef VPX_CTRL_USE_TYPE
+#define VPX_CTRL_USE_TYPE(id, typ) \
+  static VPX_INLINE typ id##__value(va_list args) { return va_arg(args, typ); }
+
+#undef VPX_CTRL_USE_TYPE_DEPRECATED
+#define VPX_CTRL_USE_TYPE_DEPRECATED(id, typ) \
+  static VPX_INLINE typ id##__value(va_list args) { return va_arg(args, typ); }
+
+#define CAST(id, arg) id##__value(arg)
+
+/* CODEC_INTERFACE convenience macro
+ *
+ * By convention, each codec interface is a struct with extern linkage, where
+ * the symbol is suffixed with _algo. A getter function is also defined to
+ * return a pointer to the struct, since in some cases it's easier to work
+ * with text symbols than data symbols (see issue #169). This function has
+ * the same name as the struct, less the _algo suffix. The CODEC_INTERFACE
+ * macro is provided to define this getter function automatically.
+ */
+#define CODEC_INTERFACE(id)                          \
+  vpx_codec_iface_t *id(void) { return &id##_algo; } \
+  vpx_codec_iface_t id##_algo
+
+/* Internal Utility Functions
+ *
+ * The following functions are intended to be used inside algorithms as
+ * utilities for manipulating vpx_codec_* data structures.
+ */
+struct vpx_codec_pkt_list {
+  unsigned int cnt;
+  unsigned int max;
+  struct vpx_codec_cx_pkt pkts[1];
+};
+
+#define vpx_codec_pkt_list_decl(n)     \
+  union {                              \
+    struct vpx_codec_pkt_list head;    \
+    struct {                           \
+      struct vpx_codec_pkt_list head;  \
+      struct vpx_codec_cx_pkt pkts[n]; \
+    } alloc;                           \
+  }
+
+#define vpx_codec_pkt_list_init(m) \
+  (m)->alloc.head.cnt = 0,         \
+  (m)->alloc.head.max = sizeof((m)->alloc.pkts) / sizeof((m)->alloc.pkts[0])
+
+int vpx_codec_pkt_list_add(struct vpx_codec_pkt_list *,
+                           const struct vpx_codec_cx_pkt *);
+
+const vpx_codec_cx_pkt_t *vpx_codec_pkt_list_get(
+    struct vpx_codec_pkt_list *list, vpx_codec_iter_t *iter);
+
+#include <stdio.h>
+#include <setjmp.h>
+
+struct vpx_internal_error_info {
+  vpx_codec_err_t error_code;
+  int has_detail;
+  char detail[80];
+  int setjmp;
+  jmp_buf jmp;
+};
+
+#define CLANG_ANALYZER_NORETURN
+#if defined(__has_feature)
+#if __has_feature(attribute_analyzer_noreturn)
+#undef CLANG_ANALYZER_NORETURN
+#define CLANG_ANALYZER_NORETURN __attribute__((analyzer_noreturn))
+#endif
+#endif
+
+void vpx_internal_error(struct vpx_internal_error_info *info,
+                        vpx_codec_err_t error, const char *fmt,
+                        ...) CLANG_ANALYZER_NORETURN;
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VPX_INTERNAL_VPX_CODEC_INTERNAL_H_

aom/src/vpx_codec.c

+/*
+ *  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.
+ */
+
+/*!\file
+ * \brief Provides the high level interface to wrap decoder algorithms.
+ *
+ */
+#include <stdarg.h>
+#include <stdlib.h>
+#include "aom/vpx_integer.h"
+#include "aom/internal/vpx_codec_internal.h"
+#include "vpx_version.h"
+
+#define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var)
+
+int vpx_codec_version(void) { return VERSION_PACKED; }
+
+const char *vpx_codec_version_str(void) { return VERSION_STRING_NOSP; }
+
+const char *vpx_codec_version_extra_str(void) { return VERSION_EXTRA; }
+
+const char *vpx_codec_iface_name(vpx_codec_iface_t *iface) {
+  return iface ? iface->name : "<invalid interface>";
+}
+
+const char *vpx_codec_err_to_string(vpx_codec_err_t err) {
+  switch (err) {
+    case VPX_CODEC_OK: return "Success";
+    case VPX_CODEC_ERROR: return "Unspecified internal error";
+    case VPX_CODEC_MEM_ERROR: return "Memory allocation error";
+    case VPX_CODEC_ABI_MISMATCH: return "ABI version mismatch";
+    case VPX_CODEC_INCAPABLE:
+      return "Codec does not implement requested capability";
+    case VPX_CODEC_UNSUP_BITSTREAM:
+      return "Bitstream not supported by this decoder";
+    case VPX_CODEC_UNSUP_FEATURE:
+      return "Bitstream required feature not supported by this decoder";
+    case VPX_CODEC_CORRUPT_FRAME: return "Corrupt frame detected";
+    case VPX_CODEC_INVALID_PARAM: return "Invalid parameter";
+    case VPX_CODEC_LIST_END: return "End of iterated list";
+  }
+
+  return "Unrecognized error code";
+}
+
+const char *vpx_codec_error(vpx_codec_ctx_t *ctx) {
+  return (ctx) ? vpx_codec_err_to_string(ctx->err)
+               : vpx_codec_err_to_string(VPX_CODEC_INVALID_PARAM);
+}
+
+const char *vpx_codec_error_detail(vpx_codec_ctx_t *ctx) {
+  if (ctx && ctx->err)
+    return ctx->priv ? ctx->priv->err_detail : ctx->err_detail;
+
+  return NULL;
+}
+
+vpx_codec_err_t vpx_codec_destroy(vpx_codec_ctx_t *ctx) {
+  vpx_codec_err_t res;
+
+  if (!ctx)
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv)
+    res = VPX_CODEC_ERROR;
+  else {
+    ctx->iface->destroy((vpx_codec_alg_priv_t *)ctx->priv);
+
+    ctx->iface = NULL;
+    ctx->name = NULL;
+    ctx->priv = NULL;
+    res = VPX_CODEC_OK;
+  }
+
+  return SAVE_STATUS(ctx, res);
+}
+
+vpx_codec_caps_t vpx_codec_get_caps(vpx_codec_iface_t *iface) {
+  return (iface) ? iface->caps : 0;
+}
+
+vpx_codec_err_t vpx_codec_control_(vpx_codec_ctx_t *ctx, int ctrl_id, ...) {
+  vpx_codec_err_t res;
+
+  if (!ctx || !ctrl_id)
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv || !ctx->iface->ctrl_maps)
+    res = VPX_CODEC_ERROR;
+  else {
+    vpx_codec_ctrl_fn_map_t *entry;
+
+    res = VPX_CODEC_ERROR;
+
+    for (entry = ctx->iface->ctrl_maps; entry && entry->fn; entry++) {
+      if (!entry->ctrl_id || entry->ctrl_id == ctrl_id) {
+        va_list ap;
+