diff options
Diffstat (limited to 'media/libvpx/libvpx/vpx/src/vpx_encoder.c')
| -rw-r--r-- | media/libvpx/libvpx/vpx/src/vpx_encoder.c | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx/src/vpx_encoder.c b/media/libvpx/libvpx/vpx/src/vpx_encoder.c new file mode 100644 index 0000000000..0d6e48015a --- /dev/null +++ b/media/libvpx/libvpx/vpx/src/vpx_encoder.c @@ -0,0 +1,382 @@ +/* + * 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) { + // 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() {} +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; +} |