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/*
* Copyright (c) 2021, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 3-Clause Clear License
* and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
* License was not distributed with this source code in the LICENSE file, you
* can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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
* aomedia.org/license/patent-license/.
*/
/*!\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;
if (ver != AOM_ENCODER_ABI_VERSION)
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 {
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;
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;
int i;
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 (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;
break;
}
}
}
/* default values */
if (cfg) {
memset(&cfg->encoder_cfg, 0, sizeof(cfg->encoder_cfg));
cfg->encoder_cfg.superblock_size = 0; // Dynamic
cfg->encoder_cfg.max_partition_size = 128;
cfg->encoder_cfg.min_partition_size = 4;
cfg->encoder_cfg.enable_trellis_quant = 3;
}
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 "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 // ARCH_X86 || 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 \
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 {
/* 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;
}