1 files changed, 333 insertions, 0 deletions

diff --git a/third_party/aom/aom/src/aom_encoder.c b/third_party/aom/aom/src/aom_encoder.c
new file mode 100644
index 0000000000..70e0b75bcd
--- /dev/null
+++ b/third_party/aom/aom/src/aom_encoder.c
@@ -0,0 +1,333 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+/*!\file
+ * \brief Provides the high level interface to wrap encoder algorithms.
+ *
+ */
+#include "config/aom_config.h"
+
+#if HAVE_FEXCEPT
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <fenv.h>
+#endif
+
+#include <limits.h>
+#include <string.h>
+
+#include "aom/aom_encoder.h"
+#include "aom/internal/aom_codec_internal.h"
+
+#define SAVE_STATUS(ctx, var) (ctx ? (ctx->err = var) : var)
+
+static aom_codec_alg_priv_t *get_alg_priv(aom_codec_ctx_t *ctx) {
+  return (aom_codec_alg_priv_t *)ctx->priv;
+}
+
+aom_codec_err_t aom_codec_enc_init_ver(aom_codec_ctx_t *ctx,
+                                       aom_codec_iface_t *iface,
+                                       const aom_codec_enc_cfg_t *cfg,
+                                       aom_codec_flags_t flags, int ver) {
+  aom_codec_err_t res;
+  // The value of AOM_ENCODER_ABI_VERSION in libaom v3.0.0 and v3.1.0 - v3.1.3.
+  //
+  // We are compatible with these older libaom releases. AOM_ENCODER_ABI_VERSION
+  // was incremented after these releases for two reasons:
+  // 1. AOM_ENCODER_ABI_VERSION takes contribution from
+  //    AOM_EXT_PART_ABI_VERSION. The external partition API is still
+  //    experimental, so it should not be considered as part of the stable ABI.
+  //    fd9ed8366 External partition: Define APIs
+  //    https://aomedia-review.googlesource.com/c/aom/+/135663
+  // 2. As a way to detect the presence of speeds 7-9 in all-intra mode. I (wtc)
+  //    suggested this change because I misunderstood how
+  //    AOM_ENCODER_ABI_VERSION was used.
+  //    bbdfa68d1 AllIntra: Redefine all-intra mode speed features for speed 7+
+  //    https://aomedia-review.googlesource.com/c/aom/+/140624
+  const int aom_encoder_abi_version_25 = 25;
+
+  // TODO(bug aomedia:3228): Remove the check for aom_encoder_abi_version_25 in
+  // libaom v4.0.0.
+  if (ver != AOM_ENCODER_ABI_VERSION && ver != aom_encoder_abi_version_25)
+    res = AOM_CODEC_ABI_MISMATCH;
+  else if (!ctx || !iface || !cfg)
+    res = AOM_CODEC_INVALID_PARAM;
+  else if (iface->abi_version != AOM_CODEC_INTERNAL_ABI_VERSION)
+    res = AOM_CODEC_ABI_MISMATCH;
+  else if (!(iface->caps & AOM_CODEC_CAP_ENCODER))
+    res = AOM_CODEC_INCAPABLE;
+  else if ((flags & AOM_CODEC_USE_PSNR) && !(iface->caps & AOM_CODEC_CAP_PSNR))
+    res = AOM_CODEC_INCAPABLE;
+  else if ((flags & AOM_CODEC_USE_HIGHBITDEPTH) &&
+           !(iface->caps & AOM_CODEC_CAP_HIGHBITDEPTH)) {
+    res = AOM_CODEC_INCAPABLE;
+  } else if (cfg->g_bit_depth > 8 &&
+             (flags & AOM_CODEC_USE_HIGHBITDEPTH) == 0) {
+    res = AOM_CODEC_INVALID_PARAM;
+    ctx->err_detail =
+        "High bit-depth used without the AOM_CODEC_USE_HIGHBITDEPTH flag.";
+  } else {
+    ctx->iface = iface;
+    ctx->name = iface->name;
+    ctx->priv = NULL;
+    ctx->init_flags = flags;
+    ctx->config.enc = cfg;
+    res = ctx->iface->init(ctx);
+
+    if (res) {
+      // IMPORTANT: ctx->priv->err_detail must be null or point to a string
+      // that remains valid after ctx->priv is destroyed, such as a C string
+      // literal. This makes it safe to call aom_codec_error_detail() after
+      // aom_codec_enc_init_ver() failed.
+      ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
+      aom_codec_destroy(ctx);
+    }
+  }
+
+  return SAVE_STATUS(ctx, res);
+}
+
+aom_codec_err_t aom_codec_enc_config_default(aom_codec_iface_t *iface,
+                                             aom_codec_enc_cfg_t *cfg,
+                                             unsigned int usage) {
+  aom_codec_err_t res;
+
+  if (!iface || !cfg)
+    res = AOM_CODEC_INVALID_PARAM;
+  else if (!(iface->caps & AOM_CODEC_CAP_ENCODER))
+    res = AOM_CODEC_INCAPABLE;
+  else {
+    res = AOM_CODEC_INVALID_PARAM;
+
+    for (int i = 0; i < iface->enc.cfg_count; ++i) {
+      if (iface->enc.cfgs[i].g_usage == usage) {
+        *cfg = iface->enc.cfgs[i];
+        res = AOM_CODEC_OK;
+        /* default values */
+        memset(&cfg->encoder_cfg, 0, sizeof(cfg->encoder_cfg));
+        cfg->encoder_cfg.super_block_size = 0;  // Dynamic
+        cfg->encoder_cfg.max_partition_size = 128;
+        cfg->encoder_cfg.min_partition_size = 4;
+        cfg->encoder_cfg.disable_trellis_quant = 3;
+        break;
+      }
+    }
+  }
+  return res;
+}
+
+#if AOM_ARCH_X86 || AOM_ARCH_X86_64
+/* On X86, disable the x87 unit's internal 80 bit precision for better
+ * consistency with the SSE unit's 64 bit precision.
+ */
+#include "aom_ports/x86.h"
+#define FLOATING_POINT_SET_PRECISION \
+  unsigned short x87_orig_mode = x87_set_double_precision();
+#define FLOATING_POINT_RESTORE_PRECISION x87_set_control_word(x87_orig_mode);
+#else
+#define FLOATING_POINT_SET_PRECISION
+#define FLOATING_POINT_RESTORE_PRECISION
+#endif  // AOM_ARCH_X86 || AOM_ARCH_X86_64
+
+#if HAVE_FEXCEPT && CONFIG_DEBUG
+#define FLOATING_POINT_SET_EXCEPTIONS \
+  const int float_excepts =           \
+      feenableexcept(FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW);
+#define FLOATING_POINT_RESTORE_EXCEPTIONS \
+  if (float_excepts != -1) {              \
+    fedisableexcept(FE_ALL_EXCEPT);       \
+    feenableexcept(float_excepts);        \
+  }
+#else
+#define FLOATING_POINT_SET_EXCEPTIONS
+#define FLOATING_POINT_RESTORE_EXCEPTIONS
+#endif  // HAVE_FEXCEPT && CONFIG_DEBUG
+
+/* clang-format off */
+#define FLOATING_POINT_INIT    \
+  do {                         \
+  FLOATING_POINT_SET_PRECISION \
+  FLOATING_POINT_SET_EXCEPTIONS
+
+#define FLOATING_POINT_RESTORE      \
+  FLOATING_POINT_RESTORE_EXCEPTIONS \
+  FLOATING_POINT_RESTORE_PRECISION  \
+  } while (0);
+/* clang-format on */
+
+aom_codec_err_t aom_codec_encode(aom_codec_ctx_t *ctx, const aom_image_t *img,
+                                 aom_codec_pts_t pts, unsigned long duration,
+                                 aom_enc_frame_flags_t flags) {
+  aom_codec_err_t res = AOM_CODEC_OK;
+
+  if (!ctx || (img && !duration))
+    res = AOM_CODEC_INVALID_PARAM;
+  else if (!ctx->iface || !ctx->priv)
+    res = AOM_CODEC_ERROR;
+  else if (!(ctx->iface->caps & AOM_CODEC_CAP_ENCODER))
+    res = AOM_CODEC_INCAPABLE;
+  else if (img && ((img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) != 0) !=
+                      ((ctx->init_flags & AOM_CODEC_USE_HIGHBITDEPTH) != 0)) {
+    res = AOM_CODEC_INVALID_PARAM;
+  } else {
+    /* Execute in a normalized floating point environment, if the platform
+     * requires it.
+     */
+    FLOATING_POINT_INIT
+    res = ctx->iface->enc.encode(get_alg_priv(ctx), img, pts, duration, flags);
+    FLOATING_POINT_RESTORE
+  }
+
+  return SAVE_STATUS(ctx, res);
+}
+
+const aom_codec_cx_pkt_t *aom_codec_get_cx_data(aom_codec_ctx_t *ctx,
+                                                aom_codec_iter_t *iter) {
+  const aom_codec_cx_pkt_t *pkt = NULL;
+
+  if (ctx) {
+    if (!iter)
+      ctx->err = AOM_CODEC_INVALID_PARAM;
+    else if (!ctx->iface || !ctx->priv)
+      ctx->err = AOM_CODEC_ERROR;
+    else if (!(ctx->iface->caps & AOM_CODEC_CAP_ENCODER))
+      ctx->err = AOM_CODEC_INCAPABLE;
+    else
+      pkt = ctx->iface->enc.get_cx_data(get_alg_priv(ctx), iter);
+  }
+
+  if (pkt && pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
+    // If the application has specified a destination area for the
+    // compressed data, and the codec has not placed the data there,
+    // and it fits, copy it.
+    aom_codec_priv_t *const priv = ctx->priv;
+    char *const dst_buf = (char *)priv->enc.cx_data_dst_buf.buf;
+
+    if (dst_buf && pkt->data.raw.buf != dst_buf &&
+        pkt->data.raw.sz + priv->enc.cx_data_pad_before +
+                priv->enc.cx_data_pad_after <=
+            priv->enc.cx_data_dst_buf.sz) {
+      aom_codec_cx_pkt_t *modified_pkt = &priv->enc.cx_data_pkt;
+
+      memcpy(dst_buf + priv->enc.cx_data_pad_before, pkt->data.raw.buf,
+             pkt->data.raw.sz);
+      *modified_pkt = *pkt;
+      modified_pkt->data.raw.buf = dst_buf;
+      modified_pkt->data.raw.sz +=
+          priv->enc.cx_data_pad_before + priv->enc.cx_data_pad_after;
+      pkt = modified_pkt;
+    }
+
+    if (dst_buf == pkt->data.raw.buf) {
+      priv->enc.cx_data_dst_buf.buf = dst_buf + pkt->data.raw.sz;
+      priv->enc.cx_data_dst_buf.sz -= pkt->data.raw.sz;
+    }
+  }
+
+  return pkt;
+}
+
+aom_codec_err_t aom_codec_set_cx_data_buf(aom_codec_ctx_t *ctx,
+                                          const aom_fixed_buf_t *buf,
+                                          unsigned int pad_before,
+                                          unsigned int pad_after) {
+  if (!ctx || !ctx->priv) return AOM_CODEC_INVALID_PARAM;
+
+  if (buf) {
+    ctx->priv->enc.cx_data_dst_buf = *buf;
+    ctx->priv->enc.cx_data_pad_before = pad_before;
+    ctx->priv->enc.cx_data_pad_after = pad_after;
+  } else {
+    ctx->priv->enc.cx_data_dst_buf.buf = NULL;
+    ctx->priv->enc.cx_data_dst_buf.sz = 0;
+    ctx->priv->enc.cx_data_pad_before = 0;
+    ctx->priv->enc.cx_data_pad_after = 0;
+  }
+
+  return AOM_CODEC_OK;
+}
+
+const aom_image_t *aom_codec_get_preview_frame(aom_codec_ctx_t *ctx) {
+  aom_image_t *img = NULL;
+
+  if (ctx) {
+    if (!ctx->iface || !ctx->priv)
+      ctx->err = AOM_CODEC_ERROR;
+    else if (!(ctx->iface->caps & AOM_CODEC_CAP_ENCODER))
+      ctx->err = AOM_CODEC_INCAPABLE;
+    else if (!ctx->iface->enc.get_preview)
+      ctx->err = AOM_CODEC_INCAPABLE;
+    else
+      img = ctx->iface->enc.get_preview(get_alg_priv(ctx));
+  }
+
+  return img;
+}
+
+aom_fixed_buf_t *aom_codec_get_global_headers(aom_codec_ctx_t *ctx) {
+  aom_fixed_buf_t *buf = NULL;
+
+  if (ctx) {
+    if (!ctx->iface || !ctx->priv)
+      ctx->err = AOM_CODEC_ERROR;
+    else if (!(ctx->iface->caps & AOM_CODEC_CAP_ENCODER))
+      ctx->err = AOM_CODEC_INCAPABLE;
+    else if (!ctx->iface->enc.get_glob_hdrs)
+      ctx->err = AOM_CODEC_INCAPABLE;
+    else
+      buf = ctx->iface->enc.get_glob_hdrs(get_alg_priv(ctx));
+  }
+
+  return buf;
+}
+
+aom_codec_err_t aom_codec_enc_config_set(aom_codec_ctx_t *ctx,
+                                         const aom_codec_enc_cfg_t *cfg) {
+  aom_codec_err_t res;
+
+  if (!ctx || !ctx->iface || !ctx->priv || !cfg)
+    res = AOM_CODEC_INVALID_PARAM;
+  else if (!(ctx->iface->caps & AOM_CODEC_CAP_ENCODER))
+    res = AOM_CODEC_INCAPABLE;
+  else
+    res = ctx->iface->enc.cfg_set(get_alg_priv(ctx), cfg);
+
+  return SAVE_STATUS(ctx, res);
+}
+
+int aom_codec_pkt_list_add(struct aom_codec_pkt_list *list,
+                           const struct aom_codec_cx_pkt *pkt) {
+  if (list->cnt < list->max) {
+    list->pkts[list->cnt++] = *pkt;
+    return 0;
+  }
+
+  return 1;
+}
+
+const aom_codec_cx_pkt_t *aom_codec_pkt_list_get(
+    struct aom_codec_pkt_list *list, aom_codec_iter_t *iter) {
+  const aom_codec_cx_pkt_t *pkt;
+
+  if (!(*iter)) {
+    *iter = list->pkts;
+  }
+
+  pkt = (const aom_codec_cx_pkt_t *)*iter;
+
+  if ((size_t)(pkt - list->pkts) < list->cnt)
+    *iter = pkt + 1;
+  else
+    pkt = NULL;
+
+  return pkt;
+}