/src/libvpx/vpx/src/vpx_encoder.c

Source (jump to first uncovered line)
/*
 *  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 <stdint.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) {
      // IMPORTANT: ctx->priv->err_detail must be null or point to a string
      // that remains valid after ctx->priv is destroyed, such as a C string
      // literal. This makes it safe to call vpx_codec_error_detail() after
      // vpx_codec_enc_init_ver() failed.
      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;
#if CONFIG_MULTI_RES_ENCODING
    int mem_loc_owned = 0;
#endif
    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;

          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
          if (!mem_loc_owned) {
            assert(mem_loc);
            free(((LOWER_RES_FRAME_INFO *)mem_loc)->mb_info);
            free(mem_loc);
          }
#endif
          return SAVE_STATUS(ctx, res);
        }
#if CONFIG_MULTI_RES_ENCODING
        mem_loc_owned = 1;
#endif
        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;

  if (!iface || !cfg || usage != 0)
    res = VPX_CODEC_INVALID_PARAM;
  else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
    res = VPX_CODEC_INCAPABLE;
  else {
    assert(iface->enc.cfg_map_count == 1);
    *cfg = iface->enc.cfg_maps->cfg;
    res = VPX_CODEC_OK;
  }

  return res;
}

#if VPX_ARCH_X86 || VPX_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(void) {}
static void FLOATING_POINT_RESTORE(void) {}
#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,
                                 vpx_enc_deadline_t 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;
#if ULONG_MAX > UINT32_MAX
  else if (duration > UINT32_MAX || deadline > UINT32_MAX)
    res = VPX_CODEC_INVALID_PARAM;
#endif
  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;
}

Coverage Report

Created: 2024-09-06 07:53

Line	Count	Source (jump to first uncovered line)
1		/*
2		* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
3		*
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.
9		*/
10
11		/*!\file
12		* \brief Provides the high level interface to wrap encoder algorithms.
13		*
14		*/
15		#include <assert.h>
16		#include <limits.h>
17		#include <stdint.h>
18		#include <stdlib.h>
19		#include <string.h>
20		#include "vp8/common/blockd.h"
21		#include "vpx_config.h"
22		#include "vpx/internal/vpx_codec_internal.h"
23
24	152k	#define SAVE_STATUS(ctx, var) ((ctx) ? ((ctx)->err = (var)) : (var))
25
26	400k	static vpx_codec_alg_priv_t get_alg_priv(vpx_codec_ctx_t ctx) {
27	400k	return (vpx_codec_alg_priv_t *)ctx->priv;
28	400k	}
29
30		vpx_codec_err_t vpx_codec_enc_init_ver(vpx_codec_ctx_t *ctx,
31		vpx_codec_iface_t *iface,
32		const vpx_codec_enc_cfg_t *cfg,
33	8.09k	vpx_codec_flags_t flags, int ver) {
34	8.09k	vpx_codec_err_t res;
35
36	8.09k	if (ver != VPX_ENCODER_ABI_VERSION)
37	0	res = VPX_CODEC_ABI_MISMATCH;
38	8.09k	else if (!ctx \|\| !iface \|\| !cfg)
39	0	res = VPX_CODEC_INVALID_PARAM;
40	8.09k	else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
41	0	res = VPX_CODEC_ABI_MISMATCH;
42	8.09k	else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
43	0	res = VPX_CODEC_INCAPABLE;
44	8.09k	else if ((flags & VPX_CODEC_USE_PSNR) && !(iface->caps & VPX_CODEC_CAP_PSNR))
45	0	res = VPX_CODEC_INCAPABLE;
46	8.09k	else if ((flags & VPX_CODEC_USE_OUTPUT_PARTITION) &&
47	8.09k	!(iface->caps & VPX_CODEC_CAP_OUTPUT_PARTITION))
48	0	res = VPX_CODEC_INCAPABLE;
49	8.09k	else {
50	8.09k	ctx->iface = iface;
51	8.09k	ctx->name = iface->name;
52	8.09k	ctx->priv = NULL;
53	8.09k	ctx->init_flags = flags;
54	8.09k	ctx->config.enc = cfg;
55	8.09k	res = ctx->iface->init(ctx, NULL);
56
57	8.09k	if (res) {
58		// IMPORTANT: ctx->priv->err_detail must be null or point to a string
59		// that remains valid after ctx->priv is destroyed, such as a C string
60		// literal. This makes it safe to call vpx_codec_error_detail() after
61		// vpx_codec_enc_init_ver() failed.
62	197	ctx->err_detail = ctx->priv ? ctx->priv->err_detail : NULL;
63	197	vpx_codec_destroy(ctx);
64	197	}
65	8.09k	}
66
67	8.09k	return SAVE_STATUS(ctx, res);
68	8.09k	}
69
70		vpx_codec_err_t vpx_codec_enc_init_multi_ver(
71		vpx_codec_ctx_t ctx, vpx_codec_iface_t iface, vpx_codec_enc_cfg_t *cfg,
72	0	int num_enc, vpx_codec_flags_t flags, vpx_rational_t *dsf, int ver) {
73	0	vpx_codec_err_t res = VPX_CODEC_OK;
74
75	0	if (ver != VPX_ENCODER_ABI_VERSION)
76	0	res = VPX_CODEC_ABI_MISMATCH;
77	0	else if (!ctx \|\| !iface \|\| !cfg \|\| (num_enc > 16 \|\| num_enc < 1))
78	0	res = VPX_CODEC_INVALID_PARAM;
79	0	else if (iface->abi_version != VPX_CODEC_INTERNAL_ABI_VERSION)
80	0	res = VPX_CODEC_ABI_MISMATCH;
81	0	else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
82	0	res = VPX_CODEC_INCAPABLE;
83	0	else if ((flags & VPX_CODEC_USE_PSNR) && !(iface->caps & VPX_CODEC_CAP_PSNR))
84	0	res = VPX_CODEC_INCAPABLE;
85	0	else if ((flags & VPX_CODEC_USE_OUTPUT_PARTITION) &&
86	0	!(iface->caps & VPX_CODEC_CAP_OUTPUT_PARTITION))
87	0	res = VPX_CODEC_INCAPABLE;
88	0	else {
89	0	int i;
90		#if CONFIG_MULTI_RES_ENCODING
91		int mem_loc_owned = 0;
92		#endif
93	0	void *mem_loc = NULL;
94
95	0	if (iface->enc.mr_get_mem_loc == NULL) return VPX_CODEC_INCAPABLE;
96
97	0	if (!(res = iface->enc.mr_get_mem_loc(cfg, &mem_loc))) {
98	0	for (i = 0; i < num_enc; i++) {
99	0	vpx_codec_priv_enc_mr_cfg_t mr_cfg;
100
101		/* Validate down-sampling factor. */
102	0	if (dsf->num < 1 \|\| dsf->num > 4096 \|\| dsf->den < 1 \|\|
103	0	dsf->den > dsf->num) {
104	0	res = VPX_CODEC_INVALID_PARAM;
105	0	} else {
106	0	mr_cfg.mr_low_res_mode_info = mem_loc;
107	0	mr_cfg.mr_total_resolutions = num_enc;
108	0	mr_cfg.mr_encoder_id = num_enc - 1 - i;
109	0	mr_cfg.mr_down_sampling_factor.num = dsf->num;
110	0	mr_cfg.mr_down_sampling_factor.den = dsf->den;
111
112	0	ctx->iface = iface;
113	0	ctx->name = iface->name;
114	0	ctx->priv = NULL;
115	0	ctx->init_flags = flags;
116	0	ctx->config.enc = cfg;
117	0	res = ctx->iface->init(ctx, &mr_cfg);
118	0	}
119
120	0	if (res) {
121	0	const char *error_detail = ctx->priv ? ctx->priv->err_detail : NULL;
122		/* Destroy current ctx */
123	0	ctx->err_detail = error_detail;
124	0	vpx_codec_destroy(ctx);
125
126		/* Destroy already allocated high-level ctx */
127	0	while (i) {
128	0	ctx--;
129	0	ctx->err_detail = error_detail;
130	0	vpx_codec_destroy(ctx);
131	0	i--;
132	0	}
133		#if CONFIG_MULTI_RES_ENCODING
134		if (!mem_loc_owned) {
135		assert(mem_loc);
136		free(((LOWER_RES_FRAME_INFO *)mem_loc)->mb_info);
137		free(mem_loc);
138		}
139		#endif
140	0	return SAVE_STATUS(ctx, res);
141	0	}
142		#if CONFIG_MULTI_RES_ENCODING
143		mem_loc_owned = 1;
144		#endif
145	0	ctx++;
146	0	cfg++;
147	0	dsf++;
148	0	}
149	0	ctx--;
150	0	}
151	0	}
152
153	0	return SAVE_STATUS(ctx, res);
154	0	}
155
156		vpx_codec_err_t vpx_codec_enc_config_default(vpx_codec_iface_t *iface,
157		vpx_codec_enc_cfg_t *cfg,
158	8.06k	unsigned int usage) {
159	8.06k	vpx_codec_err_t res;
160
161	8.06k	if (!iface \|\| !cfg \|\| usage != 0)
162	0	res = VPX_CODEC_INVALID_PARAM;
163	8.06k	else if (!(iface->caps & VPX_CODEC_CAP_ENCODER))
164	0	res = VPX_CODEC_INCAPABLE;
165	8.06k	else {
166	8.06k	assert(iface->enc.cfg_map_count == 1);
167	8.06k	*cfg = iface->enc.cfg_maps->cfg;
168	8.06k	res = VPX_CODEC_OK;
169	8.06k	}
170
171	8.06k	return res;
172	8.06k	}
173
174		#if VPX_ARCH_X86 \|\| VPX_ARCH_X86_64
175		/* On X86, disable the x87 unit's internal 80 bit precision for better
176		* consistency with the SSE unit's 64 bit precision.
177		*/
178		#include "vpx_ports/x86.h"
179		#define FLOATING_POINT_INIT() \
180	144k	do { \
181	144k	unsigned short x87_orig_mode = x87_set_double_precision()
182		#define FLOATING_POINT_RESTORE() \
183	144k	x87_set_control_word(x87_orig_mode); \
184	144k	} \
185	144k	while (0)
186
187		#else
188		static void FLOATING_POINT_INIT(void) {}
189		static void FLOATING_POINT_RESTORE(void) {}
190		#endif
191
192		vpx_codec_err_t vpx_codec_encode(vpx_codec_ctx_t ctx, const vpx_image_t img,
193		vpx_codec_pts_t pts, unsigned long duration,
194		vpx_enc_frame_flags_t flags,
195	144k	vpx_enc_deadline_t deadline) {
196	144k	vpx_codec_err_t res = VPX_CODEC_OK;
197
198	144k	if (!ctx \|\| (img && !duration))
199	159	res = VPX_CODEC_INVALID_PARAM;
200	144k	else if (!ctx->iface \|\| !ctx->priv)
201	0	res = VPX_CODEC_ERROR;
202	144k	else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
203	0	res = VPX_CODEC_INCAPABLE;
204	144k	#if ULONG_MAX > UINT32_MAX
205	144k	else if (duration > UINT32_MAX \|\| deadline > UINT32_MAX)
206	52	res = VPX_CODEC_INVALID_PARAM;
207	144k	#endif
208	144k	else {
209	144k	unsigned int num_enc = ctx->priv->enc.total_encoders;
210
211		/* Execute in a normalized floating point environment, if the platform
212		* requires it.
213		*/
214	144k	FLOATING_POINT_INIT();
215
216	144k	if (num_enc == 1)
217	144k	res = ctx->iface->enc.encode(get_alg_priv(ctx), img, pts, duration, flags,
218	144k	deadline);
219	0	else {
220		/* Multi-resolution encoding:
221		* Encode multi-levels in reverse order. For example,
222		* if mr_total_resolutions = 3, first encode level 2,
223		* then encode level 1, and finally encode level 0.
224		*/
225	0	int i;
226
227	0	ctx += num_enc - 1;
228	0	if (img) img += num_enc - 1;
229
230	0	for (i = num_enc - 1; i >= 0; i--) {
231	0	if ((res = ctx->iface->enc.encode(get_alg_priv(ctx), img, pts, duration,
232	0	flags, deadline)))
233	0	break;
234
235	0	ctx--;
236	0	if (img) img--;
237	0	}
238	0	ctx++;
239	0	}
240
241	144k	FLOATING_POINT_RESTORE();
242	144k	}
243
244	144k	return SAVE_STATUS(ctx, res);
245	144k	}
246
247		const vpx_codec_cx_pkt_t vpx_codec_get_cx_data(vpx_codec_ctx_t ctx,
248	256k	vpx_codec_iter_t *iter) {
249	256k	const vpx_codec_cx_pkt_t *pkt = NULL;
250
251	256k	if (ctx) {
252	256k	if (!iter)
253	0	ctx->err = VPX_CODEC_INVALID_PARAM;
254	256k	else if (!ctx->iface \|\| !ctx->priv)
255	0	ctx->err = VPX_CODEC_ERROR;
256	256k	else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
257	0	ctx->err = VPX_CODEC_INCAPABLE;
258	256k	else
259	256k	pkt = ctx->iface->enc.get_cx_data(get_alg_priv(ctx), iter);
260	256k	}
261
262	256k	if (pkt && pkt->kind == VPX_CODEC_CX_FRAME_PKT) {
263		// If the application has specified a destination area for the
264		// compressed data, and the codec has not placed the data there,
265		// and it fits, copy it.
266	112k	vpx_codec_priv_t *const priv = ctx->priv;
267	112k	char const dst_buf = (char )priv->enc.cx_data_dst_buf.buf;
268
269	112k	if (dst_buf && pkt->data.raw.buf != dst_buf &&
270	112k	pkt->data.raw.sz + priv->enc.cx_data_pad_before +
271	0	priv->enc.cx_data_pad_after <=
272	0	priv->enc.cx_data_dst_buf.sz) {
273	0	vpx_codec_cx_pkt_t *modified_pkt = &priv->enc.cx_data_pkt;
274
275	0	memcpy(dst_buf + priv->enc.cx_data_pad_before, pkt->data.raw.buf,
276	0	pkt->data.raw.sz);
277	0	modified_pkt = pkt;
278	0	modified_pkt->data.raw.buf = dst_buf;
279	0	modified_pkt->data.raw.sz +=
280	0	priv->enc.cx_data_pad_before + priv->enc.cx_data_pad_after;
281	0	pkt = modified_pkt;
282	0	}
283
284	112k	if (dst_buf == pkt->data.raw.buf) {
285	0	priv->enc.cx_data_dst_buf.buf = dst_buf + pkt->data.raw.sz;
286	0	priv->enc.cx_data_dst_buf.sz -= pkt->data.raw.sz;
287	0	}
288	112k	}
289
290	256k	return pkt;
291	256k	}
292
293		vpx_codec_err_t vpx_codec_set_cx_data_buf(vpx_codec_ctx_t *ctx,
294		const vpx_fixed_buf_t *buf,
295		unsigned int pad_before,
296	0	unsigned int pad_after) {
297	0	if (!ctx \|\| !ctx->priv) return VPX_CODEC_INVALID_PARAM;
298
299	0	if (buf) {
300	0	ctx->priv->enc.cx_data_dst_buf = *buf;
301	0	ctx->priv->enc.cx_data_pad_before = pad_before;
302	0	ctx->priv->enc.cx_data_pad_after = pad_after;
303	0	} else {
304	0	ctx->priv->enc.cx_data_dst_buf.buf = NULL;
305	0	ctx->priv->enc.cx_data_dst_buf.sz = 0;
306	0	ctx->priv->enc.cx_data_pad_before = 0;
307	0	ctx->priv->enc.cx_data_pad_after = 0;
308	0	}
309
310	0	return VPX_CODEC_OK;
311	0	}
312
313	0	const vpx_image_t vpx_codec_get_preview_frame(vpx_codec_ctx_t ctx) {
314	0	vpx_image_t *img = NULL;
315
316	0	if (ctx) {
317	0	if (!ctx->iface \|\| !ctx->priv)
318	0	ctx->err = VPX_CODEC_ERROR;
319	0	else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
320	0	ctx->err = VPX_CODEC_INCAPABLE;
321	0	else if (!ctx->iface->enc.get_preview)
322	0	ctx->err = VPX_CODEC_INCAPABLE;
323	0	else
324	0	img = ctx->iface->enc.get_preview(get_alg_priv(ctx));
325	0	}
326
327	0	return img;
328	0	}
329
330	0	vpx_fixed_buf_t vpx_codec_get_global_headers(vpx_codec_ctx_t ctx) {
331	0	vpx_fixed_buf_t *buf = NULL;
332
333	0	if (ctx) {
334	0	if (!ctx->iface \|\| !ctx->priv)
335	0	ctx->err = VPX_CODEC_ERROR;
336	0	else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
337	0	ctx->err = VPX_CODEC_INCAPABLE;
338	0	else if (!ctx->iface->enc.get_glob_hdrs)
339	0	ctx->err = VPX_CODEC_INCAPABLE;
340	0	else
341	0	buf = ctx->iface->enc.get_glob_hdrs(get_alg_priv(ctx));
342	0	}
343
344	0	return buf;
345	0	}
346
347		vpx_codec_err_t vpx_codec_enc_config_set(vpx_codec_ctx_t *ctx,
348	0	const vpx_codec_enc_cfg_t *cfg) {
349	0	vpx_codec_err_t res;
350
351	0	if (!ctx \|\| !ctx->iface \|\| !ctx->priv \|\| !cfg)
352	0	res = VPX_CODEC_INVALID_PARAM;
353	0	else if (!(ctx->iface->caps & VPX_CODEC_CAP_ENCODER))
354	0	res = VPX_CODEC_INCAPABLE;
355	0	else
356	0	res = ctx->iface->enc.cfg_set(get_alg_priv(ctx), cfg);
357
358	0	return SAVE_STATUS(ctx, res);
359	0	}
360
361		int vpx_codec_pkt_list_add(struct vpx_codec_pkt_list *list,
362	112k	const struct vpx_codec_cx_pkt *pkt) {
363	112k	if (list->cnt < list->max) {
364	112k	list->pkts[list->cnt++] = *pkt;
365	112k	return 0;
366	112k	}
367
368	0	return 1;
369	112k	}
370
371		const vpx_codec_cx_pkt_t *vpx_codec_pkt_list_get(
372	256k	struct vpx_codec_pkt_list list, vpx_codec_iter_t iter) {
373	256k	const vpx_codec_cx_pkt_t *pkt;
374
375	256k	if (!(*iter)) {
376	143k	*iter = list->pkts;
377	143k	}
378
379	256k	pkt = (const vpx_codec_cx_pkt_t )iter;
380
381	256k	if ((size_t)(pkt - list->pkts) < list->cnt)
382	112k	*iter = pkt + 1;
383	143k	else
384	143k	pkt = NULL;
385
386	256k	return pkt;
387	256k	}