remove remaining references to XMA

the bulk of the functionality was removed in:
a42b5c2 Removing legacy XMA features from libvpx.

BUG=840

Change-Id: I8ca51d6aa76028f36d0eb1a15d2f2e3161e12ea4

usage.dox

@@ -57,9 +57,6 @@
     the vpx_codec_get_caps() method. Attempts to invoke features not supported
     by an algorithm will generally result in #VPX_CODEC_INCAPABLE.
 
-    Currently defined features available in both encoders and decoders include:
-    - \subpage usage_xma
-
     \if decoder
     Currently defined decoder features include:
     - \ref usage_cb
@@ -70,9 +67,7 @@
     To initialize a codec instance, the address of the codec context
     and interface structures are passed to an initialization function. Depending
     on the \ref usage_features that the codec supports, the codec could be
-    initialized in different modes. Most notably, the application may choose to
+    initialized in different modes.
-    use \ref usage_xma mode to gain fine grained control over how and where
-    memory is allocated for the codec.
 
     To prevent cases of confusion where the ABI of the library changes,
     the ABI is versioned. The ABI version number must be passed at
@@ -136,73 +131,3 @@
     possible."
 
 */
-
-
-/*! \page usage_xma External Memory Allocation
-    Applications that wish to have fine grained control over how and where
-    decoders allocate memory \ref MAY make use of the eXternal Memory Allocation
-    (XMA) interface. Not all codecs support the XMA \ref usage_features.
-
-    To use a decoder in XMA mode, the decoder \ref MUST be initialized with the
-    vpx_codec_xma_init_ver() function. The amount of memory a decoder needs to
-    allocate is heavily dependent on the size of the encoded video frames. The
-    size of the video must be known before requesting the decoder's memory map.
-    This stream information can be obtained with the vpx_codec_peek_stream_info()
-    function, which does not require a constructed decoder context. If the exact
-    stream is not known, a stream info structure can be created that reflects
-    the maximum size that the decoder instance is required to support.
-
-    Once the decoder instance has been initialized and the stream information
-    determined, the application calls the vpx_codec_get_mem_map() iterator
-    repeatedly to get a list of the memory segments requested by the decoder.
-    The iterator value should be initialized to NULL to request the first
-    element, and the function will return #VPX_CODEC_LIST_END to signal the end of
-    the list.
-
-    After each segment is identified, it must be passed to the codec through the
-    vpx_codec_set_mem_map() function. Segments \ref MUST be passed in the same
-    order as they are returned from vpx_codec_get_mem_map(), but there is no
-    requirement that vpx_codec_get_mem_map() must finish iterating before
-    vpx_codec_set_mem_map() is called. For instance, some applications may choose
-    to get a list of all requests, construct an optimal heap, and then set all
-    maps at once with one call. Other applications may set one map at a time,
-    allocating it immediately after it is returned from vpx_codec_get_mem_map().
-
-    After all segments have been set using vpx_codec_set_mem_map(), the codec may
-    be used as it would be in normal internal allocation mode.
-
-    \section usage_xma_seg_id Segment Identifiers
-    Each requested segment is identified by an identifier unique to
-    that decoder type. Some of these identifiers are private, while others are
-    enumerated for application use. Identifiers not enumerated publicly are
-    subject to change. Identifiers are non-consecutive.
-
-    \section usage_xma_seg_szalign Segment Size and Alignment
-    The sz (size) and align (alignment) parameters describe the required size
-    and alignment of the requested segment. Alignment will always be a power of
-    two. Applications \ref MUST honor the alignment requested. Failure to do so
-    could result in program crashes or may incur a speed penalty.
-
-    \section usage_xma_seg_flags Segment Flags
-    The flags member of the segment structure indicates any requirements or
-    desires of the codec for the particular segment. The #VPX_CODEC_MEM_ZERO flag
-    indicates that the segment \ref MUST be zeroed by the application prior to
-    passing it to the application. The #VPX_CODEC_MEM_WRONLY flag indicates that
-    the segment will only be written into by the decoder, not read. If this flag
-    is not set, the application \ref MUST insure that the memory segment is
-    readable. On some platforms, framebuffer memory is writable but not
-    readable, for example. The #VPX_CODEC_MEM_FAST flag indicates that the segment
-    will be frequently accessed, and that it should be placed into fast memory,
-    if any is available. The application \ref MAY choose to place other segments
-    in fast memory as well, but the most critical segments will be identified by
-    this flag.
-
-    \section usage_xma_seg_basedtor Segment Base Address and Destructor
-    For each requested memory segment, the application must determine the
-    address of a memory segment that meets the requirements of the codec. This
-    address is set in the <code>base</code> member of the #vpx_codec_mmap
-    structure. If the application requires processing when the segment is no
-    longer used by the codec (for instance to deallocate it or close an
-    associated file descriptor) the <code>dtor</code> and <code>priv</code>
-    members can be set.
-*/

vpx/src/vpx_decoder.c

@@ -31,8 +31,6 @@ vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t      *ctx,
     res = VPX_CODEC_INVALID_PARAM;
   else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
     res = VPX_CODEC_ABI_MISMATCH;
-  else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
-    res = VPX_CODEC_INCAPABLE;
   else if ((flags & VPX_CODEC_USE_POSTPROC) && !(iface->caps & VPX_CODEC_CAP_POSTPROC))
     res = VPX_CODEC_INCAPABLE;
   else if ((flags & VPX_CODEC_USE_ERROR_CONCEALMENT) &&
@@ -50,11 +48,8 @@ vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t      *ctx,
     ctx->priv = NULL;
     ctx->init_flags = flags;
     ctx->config.dec = cfg;
-    res = VPX_CODEC_OK;
 
-    if (!(flags & VPX_CODEC_USE_XMA)) {
     res = ctx->iface->init(ctx, NULL);
-
     if (res) {
       ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
       vpx_codec_destroy(ctx);
@@ -63,7 +58,6 @@ vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t      *ctx,
     if (ctx->priv)
       ctx->priv->iface = ctx->iface;
   }
-  }
 
   return SAVE_STATUS(ctx, res);
 }

vpx/src/vpx_encoder.c

@@ -35,8 +35,6 @@ vpx_codec_err_t vpx_codec_enc_init_ver(vpx_codec_ctx_t      *ctx,
     res = VPX_CODEC_ABI_MISMATCH;
   else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
     res = VPX_CODEC_INCAPABLE;
-  else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
-    res = VPX_CODEC_INCAPABLE;
   else if ((flags & VPX_CODEC_USE_PSNR)
            && !(iface->caps & VPX_CODEC_CAP_PSNR))
     res = VPX_CODEC_INCAPABLE;
@@ -80,8 +78,6 @@ vpx_codec_err_t vpx_codec_enc_init_multi_ver(vpx_codec_ctx_t      *ctx,
     res = VPX_CODEC_ABI_MISMATCH;
   else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
     res = VPX_CODEC_INCAPABLE;
-  else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
-    res = VPX_CODEC_INCAPABLE;
   else if ((flags & VPX_CODEC_USE_PSNR)
            && !(iface->caps & VPX_CODEC_CAP_PSNR))
     res = VPX_CODEC_INCAPABLE;

vpx/vpx_codec.h

@@ -153,7 +153,6 @@ extern "C" {
   typedef long vpx_codec_caps_t;
 #define VPX_CODEC_CAP_DECODER 0x1 /**< Is a decoder */
 #define VPX_CODEC_CAP_ENCODER 0x2 /**< Is an encoder */
-#define VPX_CODEC_CAP_XMA     0x4 /**< Supports eXternal Memory Allocation */
 
 
   /*! \brief Initialization-time Feature Enabling
@@ -164,7 +163,6 @@ extern "C" {
    *  The available flags are specified by VPX_CODEC_USE_* defines.
    */
   typedef long vpx_codec_flags_t;
-#define VPX_CODEC_USE_XMA 0x00000001    /**< Use eXternal Memory Allocation mode */
 
 
   /*!\brief Codec interface structure.

vpx/vpx_decoder.h

@@ -122,10 +122,6 @@ extern "C" {
    * is not thread safe and should be guarded with a lock if being used
    * in a multithreaded context.
    *
-   * In XMA mode (activated by setting VPX_CODEC_USE_XMA in the flags
-   * parameter), the storage pointed to by the cfg parameter must be
-   * kept readable and stable until all memory maps have been set.
-   *
    * \param[in]    ctx     Pointer to this instance's context.
    * \param[in]    iface   Pointer to the algorithm interface to use.
    * \param[in]    cfg     Configuration to use, if known. May be NULL.

vpx/vpx_encoder.h

@@ -704,10 +704,6 @@ extern "C" {
    * is not thread safe and should be guarded with a lock if being used
    * in a multithreaded context.
    *
-   * In XMA mode (activated by setting VPX_CODEC_USE_XMA in the flags
-   * parameter), the storage pointed to by the cfg parameter must be
-   * kept readable and stable until all memory maps have been set.
-   *
    * \param[in]    ctx     Pointer to this instance's context.
    * \param[in]    iface   Pointer to the algorithm interface to use.
    * \param[in]    cfg     Configuration to use, if known. May be NULL.
@@ -741,10 +737,6 @@ extern "C" {
    * instead of this function directly, to ensure that the ABI version number
    * parameter is properly initialized.
    *
-   * In XMA mode (activated by setting VPX_CODEC_USE_XMA in the flags
-   * parameter), the storage pointed to by the cfg parameter must be
-   * kept readable and stable until all memory maps have been set.
-   *
    * \param[in]    ctx     Pointer to this instance's context.
    * \param[in]    iface   Pointer to the algorithm interface to use.
    * \param[in]    cfg     Configuration to use, if known. May be NULL.