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https://github.com/xenia-project/FFmpeg.git
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b945fed629
Explicitly identify decoder/encoder wrappers with a common name. This
saves API users from guessing by the name suffix. For example, they
don't have to guess that "h264_qsv" is the h264 QSV implementation, and
instead they can just check the AVCodec .codec and .wrapper_name fields.
Explicitly mark AVCodec entries that are hardware decoders or most
likely hardware decoders with new AV_CODEC_CAPs. The purpose is allowing
API users listing hardware decoders in a more generic way. The proposed
AVCodecHWConfig does not provide this information fully, because it's
concerned with decoder configuration, not information about the fact
whether the hardware is used or not.
AV_CODEC_CAP_HYBRID exists specifically for QSV, which can have software
implementations in case the hardware is not capable.
Based on a patch by Philip Langdale <philipl@overt.org>.
Merges Libav commit 47687a2f8a.
290 lines
10 KiB
C
290 lines
10 KiB
C
/*
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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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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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/* 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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uint32_t b = bytestream2_peek_be24(&gbc);
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if (b <= 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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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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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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#if defined(_WIN32)
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#define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_SW
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#else
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#define LOAD_PLUGIN_DEFAULT LOAD_PLUGIN_HEVC_HW
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#endif
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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_DEFAULT }, 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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{ 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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{ "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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};
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