ref: bf59fb119eef062e35b01121d63f9eb94f6cd7eb
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 <assert.h>
#include <limits.h>
#include <stdlib.h>
#include <string.h>
#include "vp8/common/blockd.h"
#include "vpx_config.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_enc_init_ver(vpx_codec_ctx_t *ctx,
vpx_codec_iface_t *iface,
const 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_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, 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_enc_init_multi_ver(
vpx_codec_ctx_t *ctx, vpx_codec_iface_t *iface, vpx_codec_enc_cfg_t *cfg,
int num_enc, vpx_codec_flags_t flags, vpx_rational_t *dsf, int ver) {
vpx_codec_err_t res = VPX_CODEC_OK;
if (ver != VPX_ENCODER_ABI_VERSION)
res = VPX_CODEC_ABI_MISMATCH;
else if (!ctx || !iface || !cfg || (num_enc > 16 || num_enc < 1))
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_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 {
int i;
void *mem_loc = NULL;
if (iface->enc.mr_get_mem_loc == NULL) return VPX_CODEC_INCAPABLE;
if (!(res = iface->enc.mr_get_mem_loc(cfg, &mem_loc))) {
for (i = 0; i < num_enc; i++) {
vpx_codec_priv_enc_mr_cfg_t mr_cfg;
/* Validate down-sampling factor. */
if (dsf->num < 1 || dsf->num > 4096 || dsf->den < 1 ||
dsf->den > dsf->num) {
res = VPX_CODEC_INVALID_PARAM;
} else {
mr_cfg.mr_low_res_mode_info = mem_loc;
mr_cfg.mr_total_resolutions = num_enc;
mr_cfg.mr_encoder_id = num_enc - 1 - i;
mr_cfg.mr_down_sampling_factor.num = dsf->num;
mr_cfg.mr_down_sampling_factor.den = dsf->den;
/* Force Key-frame synchronization. Namely, encoder at higher
* resolution always use the same frame_type chosen by the
* lowest-resolution encoder.
*/
if (mr_cfg.mr_encoder_id) cfg->kf_mode = VPX_KF_DISABLED;
ctx->iface = iface;
ctx->name = iface->name;
ctx->priv = NULL;
ctx->init_flags = flags;
ctx->config.enc = cfg;
res = ctx->iface->init(ctx, &mr_cfg);
}
if (res) {
const char *error_detail = ctx->priv ? ctx->priv->err_detail : NULL;
/* Destroy current ctx */
ctx->err_detail = error_detail;
vpx_codec_destroy(ctx);
/* Destroy already allocated high-level ctx */
while (i) {
ctx--;
ctx->err_detail = error_detail;
vpx_codec_destroy(ctx);
i--;
}
#if CONFIG_MULTI_RES_ENCODING
assert(mem_loc);
free(((LOWER_RES_FRAME_INFO *)mem_loc)->mb_info);
free(mem_loc);
#endif
return SAVE_STATUS(ctx, res);
}
ctx++;
cfg++;
dsf++;
}
ctx--;
}
}
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;
int i;
if (!iface || !cfg || usage != 0)
res = VPX_CODEC_INVALID_PARAM;
else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
res = VPX_CODEC_INCAPABLE;
else {
res = VPX_CODEC_INVALID_PARAM;
for (i = 0; i < iface->enc.cfg_map_count; ++i) {
map = iface->enc.cfg_maps + i;
*cfg = map->cfg;
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 = VPX_CODEC_OK;
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 {
unsigned int num_enc = ctx->priv->enc.total_encoders;
/* Execute in a normalized floating point environment, if the platform
* requires it.
*/
FLOATING_POINT_INIT();
if (num_enc == 1)
res = ctx->iface->enc.encode(get_alg_priv(ctx), img, pts, duration, flags,
deadline);
else {
/* Multi-resolution encoding:
* Encode multi-levels in reverse order. For example,
* if mr_total_resolutions = 3, first encode level 2,
* then encode level 1, and finally encode level 0.
*/
int i;
ctx += num_enc - 1;
if (img) img += num_enc - 1;
for (i = num_enc - 1; i >= 0; i--) {
if ((res = ctx->iface->enc.encode(get_alg_priv(ctx), img, pts, duration,
flags, deadline)))
break;
ctx--;
if (img) img--;
}
ctx++;
}
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(get_alg_priv(ctx), 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.
vpx_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) {
vpx_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;
}
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(get_alg_priv(ctx));
}
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(get_alg_priv(ctx));
}
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(get_alg_priv(ctx), 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 vpx_codec_cx_pkt_t *)*iter;
if ((size_t)(pkt - list->pkts) < list->cnt)
*iter = pkt + 1;
else
pkt = NULL;
return pkt;
}