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-rw-r--r--media/libvpx/vpx/src/vpx_decoder.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/media/libvpx/vpx/src/vpx_decoder.c b/media/libvpx/vpx/src/vpx_decoder.c
new file mode 100644
index 000000000..802d8edd8
--- /dev/null
+++ b/media/libvpx/vpx/src/vpx_decoder.c
@@ -0,0 +1,197 @@
+/*
+ * 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)
+
+static vpx_codec_alg_priv_t *get_alg_priv(vpx_codec_ctx_t *ctx) {
+ return (vpx_codec_alg_priv_t *)ctx->priv;
+}
+
+vpx_codec_err_t vpx_codec_dec_init_ver(vpx_codec_ctx_t *ctx,
+ vpx_codec_iface_t *iface,
+ const vpx_codec_dec_cfg_t *cfg,
+ vpx_codec_flags_t flags,
+ 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_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 = ctx->iface->init(ctx, NULL);
+ if (res) {
+ ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
+ vpx_codec_destroy(ctx);
+ }
+ }
+
+ 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;
+
+ 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);
+ }
+
+ 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;
+
+ 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(get_alg_priv(ctx), si);
+ }
+
+ 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;
+
+ /* Sanity checks */
+ /* NULL data ptr allowed if data_sz is 0 too */
+ if (!ctx || (!data && data_sz) || (data && !data_sz))
+ res = VPX_CODEC_INVALID_PARAM;
+ else if (!ctx->iface || !ctx->priv)
+ res = VPX_CODEC_ERROR;
+ else {
+ res = ctx->iface->dec.decode(get_alg_priv(ctx), data, data_sz, user_priv,
+ deadline);
+ }
+
+ 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;
+
+ if (!ctx || !iter || !ctx->iface || !ctx->priv)
+ img = NULL;
+ else
+ img = ctx->iface->dec.get_frame(get_alg_priv(ctx), iter);
+
+ 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;
+
+ 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);
+}
+
+
+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;
+
+ if (!ctx || !cb)
+ res = VPX_CODEC_INVALID_PARAM;
+ else if (!ctx->iface || !ctx->priv
+ || !(ctx->iface->caps & VPX_CODEC_CAP_PUT_SLICE))
+ 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);
+}
+
+vpx_codec_err_t vpx_codec_set_frame_buffer_functions(
+ vpx_codec_ctx_t *ctx, vpx_get_frame_buffer_cb_fn_t cb_get,
+ vpx_release_frame_buffer_cb_fn_t cb_release, void *cb_priv) {
+ vpx_codec_err_t res;
+
+ if (!ctx || !cb_get || !cb_release) {
+ res = VPX_CODEC_INVALID_PARAM;
+ } else if (!ctx->iface || !ctx->priv ||
+ !(ctx->iface->caps & VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER)) {
+ res = VPX_CODEC_ERROR;
+ } else {
+ res = ctx->iface->dec.set_fb_fn(get_alg_priv(ctx), cb_get, cb_release,
+ cb_priv);
+ }
+
+ return SAVE_STATUS(ctx, res);
+}