libvpx: Add VP9 decoder.

source/libvpx/vpx/src/vpx_decoder.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 <string.h>
 #include "vpx/internal/vpx_codec_internal.h"
 
 #define SAVE_STATUS(ctx,var) (ctx?(ctx->err = var):var)
 
 vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t      *ctx,
                                        vpx_codec_iface_t    *iface,
                                        vpx_codec_dec_cfg_t  *cfg,
                                        vpx_codec_flags_t     flags,
-                                       int                   ver)
-{
-    vpx_codec_err_t res;
+                                       int                   ver) {
+  vpx_codec_err_t res;
 
-    if (ver != VPX_DECODER_ABI_VERSION)
-        res = VPX_CODEC_ABI_MISMATCH;
-    else if (!ctx || !iface)
-        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) &&
-            !(iface->caps & VPX_CODEC_CAP_ERROR_CONCEALMENT))
-        res = VPX_CODEC_INCAPABLE;
-    else if ((flags & VPX_CODEC_USE_INPUT_FRAGMENTS) &&
-            !(iface->caps & VPX_CODEC_CAP_INPUT_FRAGMENTS))
-        res = VPX_CODEC_INCAPABLE;
-    else if (!(iface->caps & VPX_CODEC_CAP_DECODER))
-        res = VPX_CODEC_INCAPABLE;
-    else
-    {
-        memset(ctx, 0, sizeof(*ctx));
-        ctx->iface = iface;
-        ctx->name = iface->name;
-        ctx->priv = NULL;
-        ctx->init_flags = flags;
-        ctx->config.dec = cfg;
-        res = VPX_CODEC_OK;
+  if (ver != VPX_DECODER_ABI_VERSION)
+    res = VPX_CODEC_ABI_MISMATCH;
+  else if (!ctx || !iface)
+    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) &&
+           !(iface->caps & VPX_CODEC_CAP_ERROR_CONCEALMENT))
+    res = VPX_CODEC_INCAPABLE;
+  else if ((flags & VPX_CODEC_USE_INPUT_FRAGMENTS) &&
+           !(iface->caps & VPX_CODEC_CAP_INPUT_FRAGMENTS))
+    res = VPX_CODEC_INCAPABLE;
+  else if (!(iface->caps & VPX_CODEC_CAP_DECODER))
+    res = VPX_CODEC_INCAPABLE;
+  else {
+    memset(ctx, 0, sizeof(*ctx));
+    ctx->iface = iface;
+    ctx->name = iface->name;
+    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 (!(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);
-            }
+      if (res) {
+        ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
+        vpx_codec_destroy(ctx);
+      }
 
-            if (ctx->priv)
-                ctx->priv->iface = ctx->iface;
-        }
+      if (ctx->priv)
+        ctx->priv->iface = ctx->iface;
     }
+  }
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }
 
 
 vpx_codec_err_t vpx_codec_peek_stream_info(vpx_codec_iface_t       *iface,
-        const uint8_t         *data,
-        unsigned int           data_sz,
-        vpx_codec_stream_info_t *si)
-{
-    vpx_codec_err_t res;
+                                           const uint8_t         *data,
+                                           unsigned int           data_sz,
+                                           vpx_codec_stream_info_t *si) {
+  vpx_codec_err_t res;
 
-    if (!iface || !data || !data_sz || !si
-        || si->sz < sizeof(vpx_codec_stream_info_t))
-        res = VPX_CODEC_INVALID_PARAM;
-    else
-    {
-        /* Set default/unknown values */
-        si->w = 0;
-        si->h = 0;
+  if (!iface || !data || !data_sz || !si
+      || si->sz < sizeof(vpx_codec_stream_info_t))
+    res = VPX_CODEC_INVALID_PARAM;
+  else {
+    /* Set default/unknown values */
+    si->w = 0;
+    si->h = 0;
 
-        res = iface->dec.peek_si(data, data_sz, si);
-    }
+    res = iface->dec.peek_si(data, data_sz, si);
+  }
 
-    return res;
+  return res;
 }
 
 
 vpx_codec_err_t vpx_codec_get_stream_info(vpx_codec_ctx_t         *ctx,
-        vpx_codec_stream_info_t *si)
-{
-    vpx_codec_err_t res;
+                                          vpx_codec_stream_info_t *si) {
+  vpx_codec_err_t res;
 
-    if (!ctx || !si || si->sz < sizeof(vpx_codec_stream_info_t))
-        res = VPX_CODEC_INVALID_PARAM;
-    else if (!ctx->iface || !ctx->priv)
-        res = VPX_CODEC_ERROR;
-    else
-    {
-        /* Set default/unknown values */
-        si->w = 0;
-        si->h = 0;
+  if (!ctx || !si || si->sz < sizeof(vpx_codec_stream_info_t))
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv)
+    res = VPX_CODEC_ERROR;
+  else {
+    /* Set default/unknown values */
+    si->w = 0;
+    si->h = 0;
 
-        res = ctx->iface->dec.get_si(ctx->priv->alg_priv, si);
-    }
+    res = ctx->iface->dec.get_si(ctx->priv->alg_priv, si);
+  }
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }
 
 
 vpx_codec_err_t vpx_codec_decode(vpx_codec_ctx_t    *ctx,
                                  const uint8_t        *data,
                                  unsigned int    data_sz,
                                  void       *user_priv,
-                                 long        deadline)
-{
-    vpx_codec_err_t res;
+                                 long        deadline) {
+  vpx_codec_err_t res;
 
-    /* Sanity checks */
-    /* NULL data ptr allowed if data_sz is 0 too */
-    if (!ctx || (!data && data_sz))
-        res = VPX_CODEC_INVALID_PARAM;
-    else if (!ctx->iface || !ctx->priv)
-        res = VPX_CODEC_ERROR;
-    else
-    {
-        res = ctx->iface->dec.decode(ctx->priv->alg_priv, data, data_sz,
-                                     user_priv, deadline);
-    }
+  /* Sanity checks */
+  /* NULL data ptr allowed if data_sz is 0 too */
+  if (!ctx || (!data && data_sz))
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv)
+    res = VPX_CODEC_ERROR;
+  else {
+    res = ctx->iface->dec.decode(ctx->priv->alg_priv, data, data_sz,
+                                 user_priv, deadline);
+  }
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }
 
 vpx_image_t *vpx_codec_get_frame(vpx_codec_ctx_t  *ctx,
-                                 vpx_codec_iter_t *iter)
-{
-    vpx_image_t *img;
+                                 vpx_codec_iter_t *iter) {
+  vpx_image_t *img;
 
-    if (!ctx || !iter || !ctx->iface || !ctx->priv)
-        img = NULL;
-    else
-        img = ctx->iface->dec.get_frame(ctx->priv->alg_priv, iter);
+  if (!ctx || !iter || !ctx->iface || !ctx->priv)
+    img = NULL;
+  else
+    img = ctx->iface->dec.get_frame(ctx->priv->alg_priv, iter);
 
-    return img;
+  return img;
 }
 
 
 vpx_codec_err_t vpx_codec_register_put_frame_cb(vpx_codec_ctx_t             *ctx,
-        vpx_codec_put_frame_cb_fn_t  cb,
-        void                      *user_priv)
-{
-    vpx_codec_err_t res;
+                                                vpx_codec_put_frame_cb_fn_t  cb,
+                                                void                      *user_priv) {
+  vpx_codec_err_t res;
 
-    if (!ctx || !cb)
-        res = VPX_CODEC_INVALID_PARAM;
-    else if (!ctx->iface || !ctx->priv
-             || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))
-        res = VPX_CODEC_ERROR;
-    else
-    {
-        ctx->priv->dec.put_frame_cb.u.put_frame = cb;
-        ctx->priv->dec.put_frame_cb.user_priv = user_priv;
-        res = VPX_CODEC_OK;
-    }
+  if (!ctx || !cb)
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv
+           || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))
+    res = VPX_CODEC_ERROR;
+  else {
+    ctx->priv->dec.put_frame_cb.u.put_frame = cb;
+    ctx->priv->dec.put_frame_cb.user_priv = user_priv;
+    res = VPX_CODEC_OK;
+  }
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }
 
 
 vpx_codec_err_t vpx_codec_register_put_slice_cb(vpx_codec_ctx_t             *ctx,
-        vpx_codec_put_slice_cb_fn_t  cb,
-        void                      *user_priv)
-{
-    vpx_codec_err_t res;
+                                                vpx_codec_put_slice_cb_fn_t  cb,
+                                                void                      *user_priv) {
+  vpx_codec_err_t res;
 
-    if (!ctx || !cb)
-        res = VPX_CODEC_INVALID_PARAM;
-    else if (!ctx->iface || !ctx->priv
-             || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))
-        res = VPX_CODEC_ERROR;
-    else
-    {
-        ctx->priv->dec.put_slice_cb.u.put_slice = cb;
-        ctx->priv->dec.put_slice_cb.user_priv = user_priv;
-        res = VPX_CODEC_OK;
-    }
+  if (!ctx || !cb)
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv
+           || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_FRAME))
+    res = VPX_CODEC_ERROR;
+  else {
+    ctx->priv->dec.put_slice_cb.u.put_slice = cb;
+    ctx->priv->dec.put_slice_cb.user_priv = user_priv;
+    res = VPX_CODEC_OK;
+  }
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }
 
 
 vpx_codec_err_t vpx_codec_get_mem_map(vpx_codec_ctx_t                *ctx,
                                       vpx_codec_mmap_t               *mmap,
-                                      vpx_codec_iter_t               *iter)
-{
-    vpx_codec_err_t res = VPX_CODEC_OK;
+                                      vpx_codec_iter_t               *iter) {
+  vpx_codec_err_t res = VPX_CODEC_OK;
 
-    if (!ctx || !mmap || !iter || !ctx->iface)
-        res = VPX_CODEC_INVALID_PARAM;
-    else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))
-        res = VPX_CODEC_ERROR;
-    else
-        res = ctx->iface->get_mmap(ctx, mmap, iter);
+  if (!ctx || !mmap || !iter || !ctx->iface)
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))
+    res = VPX_CODEC_ERROR;
+  else
+    res = ctx->iface->get_mmap(ctx, mmap, iter);
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }
 
 
 vpx_codec_err_t vpx_codec_set_mem_map(vpx_codec_ctx_t   *ctx,
                                       vpx_codec_mmap_t  *mmap,
-                                      unsigned int     num_maps)
-{
-    vpx_codec_err_t res = VPX_CODEC_MEM_ERROR;
+                                      unsigned int     num_maps) {
+  vpx_codec_err_t res = VPX_CODEC_MEM_ERROR;
 
-    if (!ctx || !mmap || !ctx->iface)
-        res = VPX_CODEC_INVALID_PARAM;
-    else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))
-        res = VPX_CODEC_ERROR;
-    else
-    {
-        unsigned int i;
+  if (!ctx || !mmap || !ctx->iface)
+    res = VPX_CODEC_INVALID_PARAM;
+  else if (!(ctx->iface->caps & VPX_CODEC_CAP_XMA))
+    res = VPX_CODEC_ERROR;
+  else {
+    unsigned int i;
 
-        for (i = 0; i < num_maps; i++, mmap++)
-        {
-            if (!mmap->base)
-                break;
+    for (i = 0; i < num_maps; i++, mmap++) {
+      if (!mmap->base)
+        break;
 
-            /* Everything look ok, set the mmap in the decoder */
-            res = ctx->iface->set_mmap(ctx, mmap);
+      /* Everything look ok, set the mmap in the decoder */
+      res = ctx->iface->set_mmap(ctx, mmap);
 
-            if (res)
-                break;
-        }
+      if (res)
+        break;
     }
+  }
 
-    return SAVE_STATUS(ctx, res);
+  return SAVE_STATUS(ctx, res);
 }