| /* |
| * Intel MediaSDK QSV based HEVC encoder |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <mfx/mfxvideo.h> |
| |
| #include "libavutil/common.h" |
| #include "libavutil/opt.h" |
| |
| #include "avcodec.h" |
| #include "bytestream.h" |
| #include "get_bits.h" |
| #include "hevc.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; |
| HEVCNAL 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_hevc_extract_rbsp(NULL, 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, |
| }; |
