ref: 7cb5a750311048245130ce093309d0402bb438c2
dir: /vpx/src/vpx_encoder.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 encoder algorithms.
*
*/
#include <limits.h>
#include <string.h>
#include "vpx/internal/vpx_codec_internal.h"
#include "vpx_config.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 if ((flags & VPX_CODEC_USE_OUTPUT_PARTITION)
&& !(iface->caps & VPX_CODEC_CAP_OUTPUT_PARTITION))
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;
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();
}
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 ((size_t)(pkt - list->pkts) < list->cnt)
*iter = pkt + 1;
else
pkt = NULL;
return pkt;
}