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-rw-r--r--vpx/src/vpx_encoder.c324
1 files changed, 324 insertions, 0 deletions
diff --git a/vpx/src/vpx_encoder.c b/vpx/src/vpx_encoder.c
new file mode 100644
index 000000000..a9a40de71
--- /dev/null
+++ b/vpx/src/vpx_encoder.c
@@ -0,0 +1,324 @@
+/*
+ * Copyright (c) 2010 The VP8 project authors. All Rights Reserved.
+ *
+ * Use of this source code is governed by a BSD-style license and patent
+ * grant that can be found in the LICENSE file in the root of the source
+ * tree. All contributing project authors may be found in the AUTHORS
+ * file in the root of the source tree.
+ */
+
+
+/*!\file vpx_encoder.c
+ * \brief Provides the high level interface to wrap encoder algorithms.
+ *
+ */
+#include <limits.h>
+#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_enc_init_ver(vpx_codec_ctx_t *ctx,
+ vpx_codec_iface_t *iface,
+ vpx_codec_enc_cfg_t *cfg,
+ vpx_codec_flags_t flags,
+ int ver)
+{
+ vpx_codec_err_t res;
+
+ if (ver != VPX_ENCODER_ABI_VERSION)
+ res = VPX_CODEC_ABI_MISMATCH;
+ else if (!ctx || !iface || !cfg)
+ res = VPX_CODEC_INVALID_PARAM;
+ else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
+ 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;
+ 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)
+ {
+ ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
+ vpx_codec_destroy(ctx);
+ }
+
+ if (ctx->priv)
+ ctx->priv->iface = ctx->iface;
+ }
+
+ return SAVE_STATUS(ctx, res);
+}
+
+
+
+vpx_codec_err_t vpx_codec_enc_config_default(vpx_codec_iface_t *iface,
+ vpx_codec_enc_cfg_t *cfg,
+ unsigned int usage)
+{
+ vpx_codec_err_t res;
+ vpx_codec_enc_cfg_map_t *map;
+
+ if (!iface || !cfg || usage > INT_MAX)
+ res = VPX_CODEC_INVALID_PARAM;
+ else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
+ res = VPX_CODEC_INCAPABLE;
+ else
+ {
+ res = VPX_CODEC_INVALID_PARAM;
+
+ for (map = iface->enc.cfg_maps; map->usage >= 0; map++)
+ {
+ if (map->usage == (int)usage)
+ {
+ *cfg = map->cfg;
+ cfg->g_usage = usage;
+ res = VPX_CODEC_OK;
+ break;
+ }
+ }
+ }
+
+ return res;
+}
+
+
+#if ARCH_X86 || 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 "vpx_ports/x86.h"
+#define FLOATING_POINT_INIT() do {\
+ unsigned short x87_orig_mode = x87_set_double_precision();
+#define FLOATING_POINT_RESTORE() \
+ x87_set_control_word(x87_orig_mode); }while(0)
+
+
+#else
+static void FLOATING_POINT_INIT() {}
+static void FLOATING_POINT_RESTORE() {}
+#endif
+
+
+vpx_codec_err_t vpx_codec_encode(vpx_codec_ctx_t *ctx,
+ const vpx_image_t *img,
+ vpx_codec_pts_t pts,
+ unsigned long duration,
+ vpx_enc_frame_flags_t flags,
+ unsigned long deadline)
+{
+ vpx_codec_err_t res;
+
+ if (!ctx || (img && !duration))
+ res = VPX_CODEC_INVALID_PARAM;
+ else if (!ctx->iface || !ctx->priv)
+ res = VPX_CODEC_ERROR;
+ else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
+ res = VPX_CODEC_INCAPABLE;
+
+#if CONFIG_EVAL_LIMIT
+ else if (ctx->priv->eval_counter >= 500)
+ {
+ ctx->priv->err_detail = "Evaluation limit exceeded.";
+ res = VPX_CODEC_ERROR;
+ }
+
+#endif
+ else
+ {
+ /* Execute in a normalized floating point environment, if the platform
+ * requires it.
+ */
+ FLOATING_POINT_INIT();
+ res = ctx->iface->enc.encode(ctx->priv->alg_priv, img, pts,
+ duration, flags, deadline);
+ FLOATING_POINT_RESTORE();
+
+#if CONFIG_EVAL_LIMIT
+ ctx->priv->eval_counter++;
+#endif
+ }
+
+ return SAVE_STATUS(ctx, res);
+}
+
+
+const vpx_codec_cx_pkt_t *vpx_codec_get_cx_data(vpx_codec_ctx_t *ctx,
+ vpx_codec_iter_t *iter)
+{
+ const vpx_codec_cx_pkt_t *pkt = NULL;
+
+ if (ctx)
+ {
+ if (!iter)
+ ctx->err = VPX_CODEC_INVALID_PARAM;
+ else if (!ctx->iface || !ctx->priv)
+ ctx->err = VPX_CODEC_ERROR;
+ else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
+ ctx->err = VPX_CODEC_INCAPABLE;
+ else
+ pkt = ctx->iface->enc.get_cx_data(ctx->priv->alg_priv, iter);
+ }
+
+ if (pkt && pkt->kind == VPX_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.
+ */
+ char *dst_buf = ctx->priv->enc.cx_data_dst_buf.buf;
+
+ if (dst_buf
+ && pkt->data.raw.buf != dst_buf
+ && pkt->data.raw.sz
+ + ctx->priv->enc.cx_data_pad_before
+ + ctx->priv->enc.cx_data_pad_after
+ <= ctx->priv->enc.cx_data_dst_buf.sz)
+ {
+ vpx_codec_cx_pkt_t *modified_pkt = &ctx->priv->enc.cx_data_pkt;
+
+ memcpy(dst_buf + ctx->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 += ctx->priv->enc.cx_data_pad_before
+ + ctx->priv->enc.cx_data_pad_after;
+ pkt = modified_pkt;
+ }
+
+ if (dst_buf == pkt->data.raw.buf)
+ {
+ ctx->priv->enc.cx_data_dst_buf.buf = dst_buf + pkt->data.raw.sz;
+ ctx->priv->enc.cx_data_dst_buf.sz -= pkt->data.raw.sz;
+ }
+ }
+
+ return pkt;
+}
+
+
+vpx_codec_err_t vpx_codec_set_cx_data_buf(vpx_codec_ctx_t *ctx,
+ const vpx_fixed_buf_t *buf,
+ unsigned int pad_before,
+ unsigned int pad_after)
+{
+ if (!ctx || !ctx->priv)
+ return VPX_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 VPX_CODEC_OK;
+}
+
+
+const vpx_image_t *vpx_codec_get_preview_frame(vpx_codec_ctx_t *ctx)
+{
+ vpx_image_t *img = NULL;
+
+ if (ctx)
+ {
+ if (!ctx->iface || !ctx->priv)
+ ctx->err = VPX_CODEC_ERROR;
+ else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
+ ctx->err = VPX_CODEC_INCAPABLE;
+ else if (!ctx->iface->enc.get_preview)
+ ctx->err = VPX_CODEC_INCAPABLE;
+ else
+ img = ctx->iface->enc.get_preview(ctx->priv->alg_priv);
+ }
+
+ return img;
+}
+
+
+vpx_fixed_buf_t *vpx_codec_get_global_headers(vpx_codec_ctx_t *ctx)
+{
+ vpx_fixed_buf_t *buf = NULL;
+
+ if (ctx)
+ {
+ if (!ctx->iface || !ctx->priv)
+ ctx->err = VPX_CODEC_ERROR;
+ else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
+ ctx->err = VPX_CODEC_INCAPABLE;
+ else if (!ctx->iface->enc.get_glob_hdrs)
+ ctx->err = VPX_CODEC_INCAPABLE;
+ else
+ buf = ctx->iface->enc.get_glob_hdrs(ctx->priv->alg_priv);
+ }
+
+ return buf;
+}
+
+
+vpx_codec_err_t vpx_codec_enc_config_set(vpx_codec_ctx_t *ctx,
+ const vpx_codec_enc_cfg_t *cfg)
+{
+ vpx_codec_err_t res;
+
+ if (!ctx || !ctx->iface || !ctx->priv || !cfg)
+ res = VPX_CODEC_INVALID_PARAM;
+ else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
+ res = VPX_CODEC_INCAPABLE;
+ else
+ res = ctx->iface->enc.cfg_set(ctx->priv->alg_priv, cfg);
+
+ return SAVE_STATUS(ctx, res);
+}
+
+
+int vpx_codec_pkt_list_add(struct vpx_codec_pkt_list *list,
+ const struct vpx_codec_cx_pkt *pkt)
+{
+ if (list->cnt < list->max)
+ {
+ list->pkts[list->cnt++] = *pkt;
+ return 0;
+ }
+
+ return 1;
+}
+
+
+const vpx_codec_cx_pkt_t *vpx_codec_pkt_list_get(struct vpx_codec_pkt_list *list,
+ vpx_codec_iter_t *iter)
+{
+ const vpx_codec_cx_pkt_t *pkt;
+
+ if (!(*iter))
+ {
+ *iter = list->pkts;
+ }
+
+ pkt = (const void *) * iter;
+
+ if (pkt - list->pkts < list->cnt)
+ *iter = pkt + 1;
+ else
+ pkt = NULL;
+
+ return pkt;
+}
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