294 lines
11 KiB
C
294 lines
11 KiB
C
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/*
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* Intel MediaSDK QSV based HEVC encoder
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include <sys/types.h>
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#include <mfx/mfxvideo.h>
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "bytestream.h"
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#include "get_bits.h"
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#include "hevc.h"
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#include "hevcdec.h"
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#include "h2645_parse.h"
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#include "internal.h"
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#include "qsv.h"
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#include "qsv_internal.h"
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#include "qsvenc.h"
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enum LoadPlugin {
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LOAD_PLUGIN_NONE,
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LOAD_PLUGIN_HEVC_SW,
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LOAD_PLUGIN_HEVC_HW,
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};
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typedef struct QSVHEVCEncContext {
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AVClass *class;
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QSVEncContext qsv;
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int load_plugin;
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} QSVHEVCEncContext;
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static int generate_fake_vps(QSVEncContext *q, AVCodecContext *avctx)
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{
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GetByteContext gbc;
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PutByteContext pbc;
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GetBitContext gb;
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H2645RBSP sps_rbsp = { NULL };
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H2645NAL sps_nal = { NULL };
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HEVCSPS sps = { 0 };
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HEVCVPS vps = { 0 };
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uint8_t vps_buf[128], vps_rbsp_buf[128];
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uint8_t *new_extradata;
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unsigned int sps_id;
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int ret, i, type, vps_size;
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if (!avctx->extradata_size) {
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av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx\n");
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return AVERROR_UNKNOWN;
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}
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av_fast_padded_malloc(&sps_rbsp.rbsp_buffer, &sps_rbsp.rbsp_buffer_alloc_size, avctx->extradata_size);
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if (!sps_rbsp.rbsp_buffer)
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return AVERROR(ENOMEM);
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/* parse the SPS */
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ret = ff_h2645_extract_rbsp(avctx->extradata + 4, avctx->extradata_size - 4, &sps_rbsp, &sps_nal, 1);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error unescaping the SPS buffer\n");
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return ret;
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}
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ret = init_get_bits8(&gb, sps_nal.data, sps_nal.size);
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if (ret < 0) {
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av_freep(&sps_rbsp.rbsp_buffer);
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return ret;
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}
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get_bits(&gb, 1);
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type = get_bits(&gb, 6);
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if (type != HEVC_NAL_SPS) {
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av_log(avctx, AV_LOG_ERROR, "Unexpected NAL type in the extradata: %d\n",
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type);
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av_freep(&sps_rbsp.rbsp_buffer);
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return AVERROR_INVALIDDATA;
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}
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get_bits(&gb, 9);
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ret = ff_hevc_parse_sps(&sps, &gb, &sps_id, 0, NULL, avctx);
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av_freep(&sps_rbsp.rbsp_buffer);
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error parsing the SPS\n");
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return ret;
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}
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/* generate the VPS */
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vps.vps_max_layers = 1;
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vps.vps_max_sub_layers = sps.max_sub_layers;
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vps.vps_temporal_id_nesting_flag = sps.temporal_id_nesting_flag;
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memcpy(&vps.ptl, &sps.ptl, sizeof(vps.ptl));
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vps.vps_sub_layer_ordering_info_present_flag = 1;
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for (i = 0; i < HEVC_MAX_SUB_LAYERS; i++) {
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vps.vps_max_dec_pic_buffering[i] = sps.temporal_layer[i].max_dec_pic_buffering;
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vps.vps_num_reorder_pics[i] = sps.temporal_layer[i].num_reorder_pics;
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vps.vps_max_latency_increase[i] = sps.temporal_layer[i].max_latency_increase;
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}
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vps.vps_num_layer_sets = 1;
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vps.vps_timing_info_present_flag = sps.vui.vui_timing_info_present_flag;
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vps.vps_num_units_in_tick = sps.vui.vui_num_units_in_tick;
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vps.vps_time_scale = sps.vui.vui_time_scale;
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vps.vps_poc_proportional_to_timing_flag = sps.vui.vui_poc_proportional_to_timing_flag;
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vps.vps_num_ticks_poc_diff_one = sps.vui.vui_num_ticks_poc_diff_one_minus1 + 1;
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vps.vps_num_hrd_parameters = 0;
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/* generate the encoded RBSP form of the VPS */
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ret = ff_hevc_encode_nal_vps(&vps, sps.vps_id, vps_rbsp_buf, sizeof(vps_rbsp_buf));
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if (ret < 0) {
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av_log(avctx, AV_LOG_ERROR, "Error writing the VPS\n");
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return ret;
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}
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/* escape and add the startcode */
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bytestream2_init(&gbc, vps_rbsp_buf, ret);
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bytestream2_init_writer(&pbc, vps_buf, sizeof(vps_buf));
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bytestream2_put_be32(&pbc, 1); // startcode
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bytestream2_put_byte(&pbc, HEVC_NAL_VPS << 1); // NAL
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bytestream2_put_byte(&pbc, 1); // header
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while (bytestream2_get_bytes_left(&gbc)) {
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if (bytestream2_get_bytes_left(&gbc) >= 3 && bytestream2_peek_be24(&gbc) <= 3) {
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bytestream2_put_be24(&pbc, 3);
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bytestream2_skip(&gbc, 2);
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} else
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bytestream2_put_byte(&pbc, bytestream2_get_byte(&gbc));
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}
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vps_size = bytestream2_tell_p(&pbc);
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new_extradata = av_mallocz(vps_size + avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
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if (!new_extradata)
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return AVERROR(ENOMEM);
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memcpy(new_extradata, vps_buf, vps_size);
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memcpy(new_extradata + vps_size, avctx->extradata, avctx->extradata_size);
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av_freep(&avctx->extradata);
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avctx->extradata = new_extradata;
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avctx->extradata_size += vps_size;
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return 0;
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}
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static av_cold int qsv_enc_init(AVCodecContext *avctx)
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{
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QSVHEVCEncContext *q = avctx->priv_data;
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int ret;
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if (q->load_plugin != LOAD_PLUGIN_NONE) {
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static const char * const uid_hevcenc_sw = "2fca99749fdb49aeb121a5b63ef568f7";
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static const char * const uid_hevcenc_hw = "6fadc791a0c2eb479ab6dcd5ea9da347";
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if (q->qsv.load_plugins[0]) {
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av_log(avctx, AV_LOG_WARNING,
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"load_plugins is not empty, but load_plugin is not set to 'none'."
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"The load_plugin value will be ignored.\n");
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} else {
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av_freep(&q->qsv.load_plugins);
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if (q->load_plugin == LOAD_PLUGIN_HEVC_SW)
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q->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
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else
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q->qsv.load_plugins = av_strdup(uid_hevcenc_hw);
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if (!q->qsv.load_plugins)
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return AVERROR(ENOMEM);
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}
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}
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// HEVC and H264 meaning of the value is shifted by 1, make it consistent
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q->qsv.idr_interval++;
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ret = ff_qsv_enc_init(avctx, &q->qsv);
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if (ret < 0)
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return ret;
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if (!q->qsv.hevc_vps) {
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ret = generate_fake_vps(&q->qsv, avctx);
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if (ret < 0) {
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ff_qsv_enc_close(avctx, &q->qsv);
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return ret;
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}
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}
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return 0;
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}
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static int qsv_enc_frame(AVCodecContext *avctx, AVPacket *pkt,
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const AVFrame *frame, int *got_packet)
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{
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QSVHEVCEncContext *q = avctx->priv_data;
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return ff_qsv_encode(avctx, &q->qsv, pkt, frame, got_packet);
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}
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static av_cold int qsv_enc_close(AVCodecContext *avctx)
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{
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QSVHEVCEncContext *q = avctx->priv_data;
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return ff_qsv_enc_close(avctx, &q->qsv);
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}
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#define OFFSET(x) offsetof(QSVHEVCEncContext, x)
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#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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QSV_COMMON_OPTS
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{ "idr_interval", "Distance (in I-frames) between IDR frames", OFFSET(qsv.idr_interval), AV_OPT_TYPE_INT, { .i64 = 0 }, -1, INT_MAX, VE, "idr_interval" },
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{ "begin_only", "Output an IDR-frame only at the beginning of the stream", 0, AV_OPT_TYPE_CONST, { .i64 = -1 }, 0, 0, VE, "idr_interval" },
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{ "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_HEVC_HW }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_HW, VE, "load_plugin" },
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{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VE, "load_plugin" },
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{ "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VE, "load_plugin" },
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{ "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VE, "load_plugin" },
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{ "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
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OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VE },
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{ "profile", NULL, OFFSET(qsv.profile), AV_OPT_TYPE_INT, { .i64 = MFX_PROFILE_UNKNOWN }, 0, INT_MAX, VE, "profile" },
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{ "unknown", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_UNKNOWN }, INT_MIN, INT_MAX, VE, "profile" },
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{ "main", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN }, INT_MIN, INT_MAX, VE, "profile" },
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{ "main10", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAIN10 }, INT_MIN, INT_MAX, VE, "profile" },
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{ "mainsp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_MAINSP }, INT_MIN, INT_MAX, VE, "profile" },
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{ "rext", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_PROFILE_HEVC_REXT }, INT_MIN, INT_MAX, VE, "profile" },
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{ "gpb", "1: GPB (generalized P/B frame); 0: regular P frame", OFFSET(qsv.gpb), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, VE},
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{ "tile_cols", "Number of columns for tiled encoding", OFFSET(qsv.tile_cols), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, VE },
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{ "tile_rows", "Number of rows for tiled encoding", OFFSET(qsv.tile_rows), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, UINT16_MAX, VE },
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{ NULL },
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};
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static const AVClass class = {
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.class_name = "hevc_qsv encoder",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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static const AVCodecDefault qsv_enc_defaults[] = {
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{ "b", "1M" },
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{ "refs", "0" },
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// same as the x264 default
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{ "g", "248" },
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{ "bf", "8" },
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{ "trellis", "-1" },
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{ "flags", "+cgop" },
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#if FF_API_PRIVATE_OPT
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{ "b_strategy", "-1" },
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#endif
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{ NULL },
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};
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AVCodec ff_hevc_qsv_encoder = {
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.name = "hevc_qsv",
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.long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
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.priv_data_size = sizeof(QSVHEVCEncContext),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_HEVC,
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.init = qsv_enc_init,
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.encode2 = qsv_enc_frame,
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.close = qsv_enc_close,
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.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HYBRID,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
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AV_PIX_FMT_P010,
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AV_PIX_FMT_QSV,
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AV_PIX_FMT_NONE },
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.priv_class = &class,
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.defaults = qsv_enc_defaults,
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.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
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.wrapper_name = "qsv",
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.hw_configs = ff_qsv_enc_hw_configs,
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};
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