/* * Intel MediaSDK QSV based HEVC encoder * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "libavutil/common.h" #include "libavutil/opt.h" #include "avcodec.h" #include "bytestream.h" #include "get_bits.h" #include "hevc.h" #include "h2645_parse.h" #include "internal.h" #include "qsv.h" #include "qsv_internal.h" #include "qsvenc.h" enum LoadPlugin { LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_SW, LOAD_PLUGIN_HEVC_HW, }; typedef struct QSVHEVCEncContext { AVClass *class; QSVEncContext qsv; int load_plugin; } QSVHEVCEncContext; static int generate_fake_vps(QSVEncContext *q, AVCodecContext *avctx) { GetByteContext gbc; PutByteContext pbc; GetBitContext gb; H2645NAL sps_nal = { NULL }; HEVCSPS sps = { 0 }; HEVCVPS vps = { 0 }; uint8_t vps_buf[128], vps_rbsp_buf[128]; uint8_t *new_extradata; unsigned int sps_id; int ret, i, type, vps_size; if (!avctx->extradata_size) { av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx\n"); return AVERROR_UNKNOWN; } /* parse the SPS */ ret = ff_h2645_extract_rbsp(avctx->extradata + 4, avctx->extradata_size - 4, &sps_nal); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "Error unescaping the SPS buffer\n"); return ret; } ret = init_get_bits8(&gb, sps_nal.data, sps_nal.size); if (ret < 0) { av_freep(&sps_nal.rbsp_buffer); return ret; } get_bits(&gb, 1); type = get_bits(&gb, 6); if (type != NAL_SPS) { av_log(avctx, AV_LOG_ERROR, "Unexpected NAL type in the extradata: %d\n", type); av_freep(&sps_nal.rbsp_buffer); return AVERROR_INVALIDDATA; } get_bits(&gb, 9); ret = ff_hevc_parse_sps(&sps, &gb, &sps_id, 0, NULL, avctx); av_freep(&sps_nal.rbsp_buffer); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "Error parsing the SPS\n"); return ret; } /* generate the VPS */ vps.vps_max_layers = 1; vps.vps_max_sub_layers = sps.max_sub_layers; memcpy(&vps.ptl, &sps.ptl, sizeof(vps.ptl)); vps.vps_sub_layer_ordering_info_present_flag = 1; for (i = 0; i < MAX_SUB_LAYERS; i++) { vps.vps_max_dec_pic_buffering[i] = sps.temporal_layer[i].max_dec_pic_buffering; vps.vps_num_reorder_pics[i] = sps.temporal_layer[i].num_reorder_pics; vps.vps_max_latency_increase[i] = sps.temporal_layer[i].max_latency_increase; } vps.vps_num_layer_sets = 1; vps.vps_timing_info_present_flag = sps.vui.vui_timing_info_present_flag; vps.vps_num_units_in_tick = sps.vui.vui_num_units_in_tick; vps.vps_time_scale = sps.vui.vui_time_scale; vps.vps_poc_proportional_to_timing_flag = sps.vui.vui_poc_proportional_to_timing_flag; vps.vps_num_ticks_poc_diff_one = sps.vui.vui_num_ticks_poc_diff_one_minus1 + 1; /* generate the encoded RBSP form of the VPS */ ret = ff_hevc_encode_nal_vps(&vps, sps.vps_id, vps_rbsp_buf, sizeof(vps_rbsp_buf)); if (ret < 0) { av_log(avctx, AV_LOG_ERROR, "Error writing the VPS\n"); return ret; } /* escape and add the startcode */ bytestream2_init(&gbc, vps_rbsp_buf, ret); bytestream2_init_writer(&pbc, vps_buf, sizeof(vps_buf)); bytestream2_put_be32(&pbc, 1); // startcode bytestream2_put_byte(&pbc, NAL_VPS << 1); // NAL bytestream2_put_byte(&pbc, 1); // header while (bytestream2_get_bytes_left(&gbc)) { uint32_t b = bytestream2_peek_be24(&gbc); if (b <= 3) { bytestream2_put_be24(&pbc, 3); bytestream2_skip(&gbc, 2); } else bytestream2_put_byte(&pbc, bytestream2_get_byte(&gbc)); } vps_size = bytestream2_tell_p(&pbc); new_extradata = av_mallocz(vps_size + avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); if (!new_extradata) return AVERROR(ENOMEM); memcpy(new_extradata, vps_buf, vps_size); memcpy(new_extradata + vps_size, avctx->extradata, avctx->extradata_size); av_freep(&avctx->extradata); avctx->extradata = new_extradata; avctx->extradata_size += vps_size; return 0; } static av_cold int qsv_enc_init(AVCodecContext *avctx) { QSVHEVCEncContext *q = avctx->priv_data; int ret; if (q->load_plugin != LOAD_PLUGIN_NONE) { static const char *uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7"; static const char *uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347"; if (q->qsv.load_plugins[0]) { av_log(avctx, AV_LOG_WARNING, "load_plugins is not empty, but load_plugin is not set to 'none'." "The load_plugin value will be ignored.\n"); } else { av_freep(&q->qsv.load_plugins); if (q->load_plugin == LOAD_PLUGIN_HEVC_SW) q->qsv.load_plugins = av_strdup(uid_hevcenc_sw); else q->qsv.load_plugins = av_strdup(uid_hevcenc_hw); if (!q->qsv.load_plugins) return AVERROR(ENOMEM); } } ret = ff_qsv_enc_init(avctx, &q->qsv); if (ret < 0) return ret; ret = generate_fake_vps(&q->qsv, avctx); if (ret < 0) { ff_qsv_enc_close(avctx, &q->qsv); return ret; } return 0; } static int qsv_enc_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet) { QSVHEVCEncContext *q = avctx->priv_data; return ff_qsv_encode(avctx, &q->qsv, pkt, frame, got_packet); } static av_cold int qsv_enc_close(AVCodecContext *avctx) { QSVHEVCEncContext *q = avctx->priv_data; return ff_qsv_enc_close(avctx, &q->qsv); } #define OFFSET(x) offsetof(QSVHEVCEncContext, x) #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { QSV_COMMON_OPTS { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_HEVC_SW }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VE, "load_plugin" }, { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VE, "load_plugin" }, { "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VE, "load_plugin" }, { "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VE, "load_plugin" }, { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session", OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VE }, { "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" }, { "unknown", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, VE, "profile" }, { "main", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN }, INT_MIN, INT_MAX, VE, "profile" }, { "main10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" }, { "mainsp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP }, INT_MIN, INT_MAX, VE, "profile" }, { NULL }, }; static const AVClass class = { .class_name = "hevc_qsv encoder", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; static const AVCodecDefault qsv_enc_defaults[] = { { "b", "1M" }, { "refs", "0" }, // same as the x264 default { "g", "248" }, { "bf", "8" }, { "flags", "+cgop" }, #if FF_API_PRIVATE_OPT { "b_strategy", "-1" }, #endif { NULL }, }; AVCodec ff_hevc_qsv_encoder = { .name = "hevc_qsv", .long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"), .priv_data_size = sizeof(QSVHEVCEncContext), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_HEVC, .init = qsv_enc_init, .encode2 = qsv_enc_frame, .close = qsv_enc_close, .capabilities = AV_CODEC_CAP_DELAY, .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12, AV_PIX_FMT_QSV, AV_PIX_FMT_NONE }, .priv_class = &class, .defaults = qsv_enc_defaults, .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, };