2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
13 * \brief Provides the high level interface to wrap encoder algorithms.
18 #include "vpx/internal/vpx_codec_internal.h"
19 #include "vpx_config.h"
21 #define SAVE_STATUS(ctx,var) (ctx?(ctx->err = var):var)
23 vpx_codec_err_t vpx_codec_enc_init_ver(vpx_codec_ctx_t *ctx,
24 vpx_codec_iface_t *iface,
25 vpx_codec_enc_cfg_t *cfg,
26 vpx_codec_flags_t flags,
31 if (ver != VPX_ENCODER_ABI_VERSION)
32 res = VPX_CODEC_ABI_MISMATCH;
33 else if (!ctx || !iface || !cfg)
34 res = VPX_CODEC_INVALID_PARAM;
35 else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
36 res = VPX_CODEC_ABI_MISMATCH;
37 else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
38 res = VPX_CODEC_INCAPABLE;
39 else if ((flags & VPX_CODEC_USE_XMA) && !(iface->caps & VPX_CODEC_CAP_XMA))
40 res = VPX_CODEC_INCAPABLE;
41 else if ((flags & VPX_CODEC_USE_PSNR)
42 && !(iface->caps & VPX_CODEC_CAP_PSNR))
43 res = VPX_CODEC_INCAPABLE;
47 ctx->name = iface->name;
49 ctx->init_flags = flags;
50 ctx->config.enc = cfg;
51 res = ctx->iface->init(ctx);
55 ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
56 vpx_codec_destroy(ctx);
60 ctx->priv->iface = ctx->iface;
63 return SAVE_STATUS(ctx, res);
68 vpx_codec_err_t vpx_codec_enc_config_default(vpx_codec_iface_t *iface,
69 vpx_codec_enc_cfg_t *cfg,
73 vpx_codec_enc_cfg_map_t *map;
75 if (!iface || !cfg || usage > INT_MAX)
76 res = VPX_CODEC_INVALID_PARAM;
77 else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
78 res = VPX_CODEC_INCAPABLE;
81 res = VPX_CODEC_INVALID_PARAM;
83 for (map = iface->enc.cfg_maps; map->usage >= 0; map++)
85 if (map->usage == (int)usage)
99 #if ARCH_X86 || ARCH_X86_64
100 /* On X86, disable the x87 unit's internal 80 bit precision for better
101 * consistency with the SSE unit's 64 bit precision.
103 #include "vpx_ports/x86.h"
104 #define FLOATING_POINT_INIT() do {\
105 unsigned short x87_orig_mode = x87_set_double_precision();
106 #define FLOATING_POINT_RESTORE() \
107 x87_set_control_word(x87_orig_mode); }while(0)
111 static void FLOATING_POINT_INIT() {}
112 static void FLOATING_POINT_RESTORE() {}
116 vpx_codec_err_t vpx_codec_encode(vpx_codec_ctx_t *ctx,
117 const vpx_image_t *img,
119 unsigned long duration,
120 vpx_enc_frame_flags_t flags,
121 unsigned long deadline)
125 if (!ctx || (img && !duration))
126 res = VPX_CODEC_INVALID_PARAM;
127 else if (!ctx->iface || !ctx->priv)
128 res = VPX_CODEC_ERROR;
129 else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
130 res = VPX_CODEC_INCAPABLE;
133 /* Execute in a normalized floating point environment, if the platform
136 FLOATING_POINT_INIT();
137 res = ctx->iface->enc.encode(ctx->priv->alg_priv, img, pts,
138 duration, flags, deadline);
139 FLOATING_POINT_RESTORE();
142 return SAVE_STATUS(ctx, res);
146 const vpx_codec_cx_pkt_t *vpx_codec_get_cx_data(vpx_codec_ctx_t *ctx,
147 vpx_codec_iter_t *iter)
149 const vpx_codec_cx_pkt_t *pkt = NULL;
154 ctx->err = VPX_CODEC_INVALID_PARAM;
155 else if (!ctx->iface || !ctx->priv)
156 ctx->err = VPX_CODEC_ERROR;
157 else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
158 ctx->err = VPX_CODEC_INCAPABLE;
160 pkt = ctx->iface->enc.get_cx_data(ctx->priv->alg_priv, iter);
163 if (pkt && pkt->kind == VPX_CODEC_CX_FRAME_PKT)
165 /* If the application has specified a destination area for the
166 * compressed data, and the codec has not placed the data there,
167 * and it fits, copy it.
169 char *dst_buf = ctx->priv->enc.cx_data_dst_buf.buf;
172 && pkt->data.raw.buf != dst_buf
174 + ctx->priv->enc.cx_data_pad_before
175 + ctx->priv->enc.cx_data_pad_after
176 <= ctx->priv->enc.cx_data_dst_buf.sz)
178 vpx_codec_cx_pkt_t *modified_pkt = &ctx->priv->enc.cx_data_pkt;
180 memcpy(dst_buf + ctx->priv->enc.cx_data_pad_before,
181 pkt->data.raw.buf, pkt->data.raw.sz);
182 *modified_pkt = *pkt;
183 modified_pkt->data.raw.buf = dst_buf;
184 modified_pkt->data.raw.sz += ctx->priv->enc.cx_data_pad_before
185 + ctx->priv->enc.cx_data_pad_after;
189 if (dst_buf == pkt->data.raw.buf)
191 ctx->priv->enc.cx_data_dst_buf.buf = dst_buf + pkt->data.raw.sz;
192 ctx->priv->enc.cx_data_dst_buf.sz -= pkt->data.raw.sz;
200 vpx_codec_err_t vpx_codec_set_cx_data_buf(vpx_codec_ctx_t *ctx,
201 const vpx_fixed_buf_t *buf,
202 unsigned int pad_before,
203 unsigned int pad_after)
205 if (!ctx || !ctx->priv)
206 return VPX_CODEC_INVALID_PARAM;
210 ctx->priv->enc.cx_data_dst_buf = *buf;
211 ctx->priv->enc.cx_data_pad_before = pad_before;
212 ctx->priv->enc.cx_data_pad_after = pad_after;
216 ctx->priv->enc.cx_data_dst_buf.buf = NULL;
217 ctx->priv->enc.cx_data_dst_buf.sz = 0;
218 ctx->priv->enc.cx_data_pad_before = 0;
219 ctx->priv->enc.cx_data_pad_after = 0;
226 const vpx_image_t *vpx_codec_get_preview_frame(vpx_codec_ctx_t *ctx)
228 vpx_image_t *img = NULL;
232 if (!ctx->iface || !ctx->priv)
233 ctx->err = VPX_CODEC_ERROR;
234 else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
235 ctx->err = VPX_CODEC_INCAPABLE;
236 else if (!ctx->iface->enc.get_preview)
237 ctx->err = VPX_CODEC_INCAPABLE;
239 img = ctx->iface->enc.get_preview(ctx->priv->alg_priv);
246 vpx_fixed_buf_t *vpx_codec_get_global_headers(vpx_codec_ctx_t *ctx)
248 vpx_fixed_buf_t *buf = NULL;
252 if (!ctx->iface || !ctx->priv)
253 ctx->err = VPX_CODEC_ERROR;
254 else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
255 ctx->err = VPX_CODEC_INCAPABLE;
256 else if (!ctx->iface->enc.get_glob_hdrs)
257 ctx->err = VPX_CODEC_INCAPABLE;
259 buf = ctx->iface->enc.get_glob_hdrs(ctx->priv->alg_priv);
266 vpx_codec_err_t vpx_codec_enc_config_set(vpx_codec_ctx_t *ctx,
267 const vpx_codec_enc_cfg_t *cfg)
271 if (!ctx || !ctx->iface || !ctx->priv || !cfg)
272 res = VPX_CODEC_INVALID_PARAM;
273 else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
274 res = VPX_CODEC_INCAPABLE;
276 res = ctx->iface->enc.cfg_set(ctx->priv->alg_priv, cfg);
278 return SAVE_STATUS(ctx, res);
282 int vpx_codec_pkt_list_add(struct vpx_codec_pkt_list *list,
283 const struct vpx_codec_cx_pkt *pkt)
285 if (list->cnt < list->max)
287 list->pkts[list->cnt++] = *pkt;
295 const vpx_codec_cx_pkt_t *vpx_codec_pkt_list_get(struct vpx_codec_pkt_list *list,
296 vpx_codec_iter_t *iter)
298 const vpx_codec_cx_pkt_t *pkt;
305 pkt = (const void *) * iter;
307 if ((size_t)(pkt - list->pkts) < list->cnt)