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FFmpeg/libavcodec/qsvenc.c
Anton Khirnov 72b7441a10 lavc: add Intel libmfx-based H.264 encoder
2015-03-27 22:02:10 +01:00

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/*
* Intel MediaSDK QSV encoder utility functions
*
* copyright (c) 2013 Yukinori Yamazoe
* copyright (c) 2015 Anton Khirnov
*
* 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 <string.h>
#include <sys/types.h>
#include <mfx/mfxvideo.h>
#include "libavutil/common.h"
#include "libavutil/mem.h"
#include "libavutil/log.h"
#include "libavutil/time.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "internal.h"
#include "qsv.h"
#include "qsv_internal.h"
#include "qsvenc.h"
static int init_video_param(AVCodecContext *avctx, QSVEncContext *q)
{
const char *ratecontrol_desc;
float quant;
int ret;
ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
if (ret < 0)
return AVERROR_BUG;
q->param.mfx.CodecId = ret;
if (avctx->level > 0)
q->param.mfx.CodecLevel = avctx->level;
q->param.mfx.CodecProfile = q->profile;
q->param.mfx.TargetUsage = q->preset;
q->param.mfx.GopPicSize = FFMAX(0, avctx->gop_size);
q->param.mfx.GopRefDist = FFMAX(-1, avctx->max_b_frames) + 1;
q->param.mfx.GopOptFlag = avctx->flags & CODEC_FLAG_CLOSED_GOP ?
MFX_GOP_CLOSED : 0;
q->param.mfx.IdrInterval = q->idr_interval;
q->param.mfx.NumSlice = avctx->slices;
q->param.mfx.NumRefFrame = FFMAX(0, avctx->refs);
q->param.mfx.EncodedOrder = 0;
q->param.mfx.BufferSizeInKB = 0;
q->param.mfx.FrameInfo.FourCC = MFX_FOURCC_NV12;
q->param.mfx.FrameInfo.Width = FFALIGN(avctx->width, 16);
q->param.mfx.FrameInfo.Height = FFALIGN(avctx->height, 32);
q->param.mfx.FrameInfo.CropX = 0;
q->param.mfx.FrameInfo.CropY = 0;
q->param.mfx.FrameInfo.CropW = avctx->width;
q->param.mfx.FrameInfo.CropH = avctx->height;
q->param.mfx.FrameInfo.AspectRatioW = avctx->sample_aspect_ratio.num;
q->param.mfx.FrameInfo.AspectRatioH = avctx->sample_aspect_ratio.den;
q->param.mfx.FrameInfo.PicStruct = MFX_PICSTRUCT_PROGRESSIVE;
q->param.mfx.FrameInfo.ChromaFormat = MFX_CHROMAFORMAT_YUV420;
q->param.mfx.FrameInfo.BitDepthLuma = 8;
q->param.mfx.FrameInfo.BitDepthChroma = 8;
if (avctx->framerate.den > 0 && avctx->framerate.num > 0) {
q->param.mfx.FrameInfo.FrameRateExtN = avctx->framerate.num;
q->param.mfx.FrameInfo.FrameRateExtD = avctx->framerate.den;
} else {
q->param.mfx.FrameInfo.FrameRateExtN = avctx->time_base.den;
q->param.mfx.FrameInfo.FrameRateExtD = avctx->time_base.num;
}
if (avctx->flags & CODEC_FLAG_QSCALE) {
q->param.mfx.RateControlMethod = MFX_RATECONTROL_CQP;
ratecontrol_desc = "constant quantization parameter (CQP)";
} else if (avctx->rc_max_rate == avctx->bit_rate) {
q->param.mfx.RateControlMethod = MFX_RATECONTROL_CBR;
ratecontrol_desc = "constant bitrate (CBR)";
} else if (!avctx->rc_max_rate) {
q->param.mfx.RateControlMethod = MFX_RATECONTROL_AVBR;
ratecontrol_desc = "average variable bitrate (AVBR)";
} else {
q->param.mfx.RateControlMethod = MFX_RATECONTROL_VBR;
ratecontrol_desc = "variable bitrate (VBR)";
}
av_log(avctx, AV_LOG_VERBOSE, "Using the %s ratecontrol method\n", ratecontrol_desc);
switch (q->param.mfx.RateControlMethod) {
case MFX_RATECONTROL_CBR:
case MFX_RATECONTROL_VBR:
q->param.mfx.InitialDelayInKB = avctx->rc_initial_buffer_occupancy / 1000;
q->param.mfx.TargetKbps = avctx->bit_rate / 1000;
q->param.mfx.MaxKbps = avctx->bit_rate / 1000;
break;
case MFX_RATECONTROL_CQP:
quant = avctx->global_quality / FF_QP2LAMBDA;
q->param.mfx.QPI = av_clip(quant * fabs(avctx->i_quant_factor) + avctx->i_quant_offset, 0, 51);
q->param.mfx.QPP = av_clip(quant, 0, 51);
q->param.mfx.QPB = av_clip(quant * fabs(avctx->b_quant_factor) + avctx->b_quant_offset, 0, 51);
break;
case MFX_RATECONTROL_AVBR:
q->param.mfx.TargetKbps = avctx->bit_rate / 1000;
q->param.mfx.Convergence = q->avbr_convergence;
q->param.mfx.Accuracy = q->avbr_accuracy;
break;
}
q->extco.Header.BufferId = MFX_EXTBUFF_CODING_OPTION;
q->extco.Header.BufferSz = sizeof(q->extco);
q->extco.CAVLC = avctx->coder_type == FF_CODER_TYPE_VLC ?
MFX_CODINGOPTION_ON : MFX_CODINGOPTION_UNKNOWN;
q->extparam[0] = (mfxExtBuffer *)&q->extco;
q->param.ExtParam = q->extparam;
q->param.NumExtParam = FF_ARRAY_ELEMS(q->extparam);
return 0;
}
static int qsv_retrieve_enc_params(AVCodecContext *avctx, QSVEncContext *q)
{
uint8_t sps_buf[128];
uint8_t pps_buf[128];
mfxExtCodingOptionSPSPPS extradata = {
.Header.BufferId = MFX_EXTBUFF_CODING_OPTION_SPSPPS,
.Header.BufferSz = sizeof(extradata),
.SPSBuffer = sps_buf, .SPSBufSize = sizeof(sps_buf),
.PPSBuffer = pps_buf, .PPSBufSize = sizeof(pps_buf)
};
mfxExtBuffer *ext_buffers[] = {
(mfxExtBuffer*)&extradata,
};
int ret;
q->param.ExtParam = ext_buffers;
q->param.NumExtParam = FF_ARRAY_ELEMS(ext_buffers);
ret = MFXVideoENCODE_GetVideoParam(q->session, &q->param);
if (ret < 0)
return ff_qsv_error(ret);
q->packet_size = q->param.mfx.BufferSizeInKB * 1000;
if (!extradata.SPSBufSize || !extradata.PPSBufSize) {
av_log(avctx, AV_LOG_ERROR, "No extradata returned from libmfx.\n");
return AVERROR_UNKNOWN;
}
avctx->extradata = av_malloc(extradata.SPSBufSize + extradata.PPSBufSize +
FF_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata)
return AVERROR(ENOMEM);
memcpy(avctx->extradata, sps_buf, extradata.SPSBufSize);
memcpy(avctx->extradata + extradata.SPSBufSize, pps_buf, extradata.PPSBufSize);
avctx->extradata_size = extradata.SPSBufSize + extradata.PPSBufSize;
memset(avctx->extradata + avctx->extradata_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
return 0;
}
int ff_qsv_enc_init(AVCodecContext *avctx, QSVEncContext *q)
{
int ret;
q->param.IOPattern = MFX_IOPATTERN_IN_SYSTEM_MEMORY;
q->param.AsyncDepth = q->async_depth;
if (avctx->hwaccel_context) {
AVQSVContext *qsv = avctx->hwaccel_context;
q->session = qsv->session;
q->param.IOPattern = qsv->iopattern;
}
if (!q->session) {
ret = ff_qsv_init_internal_session(avctx, &q->internal_session);
if (ret < 0)
return ret;
q->session = q->internal_session;
}
ret = init_video_param(avctx, q);
if (ret < 0)
return ret;
ret = MFXVideoENCODE_QueryIOSurf(q->session, &q->param, &q->req);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error querying the encoding parameters\n");
return ff_qsv_error(ret);
}
ret = MFXVideoENCODE_Init(q->session, &q->param);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error initializing the encoder\n");
return ff_qsv_error(ret);
}
ret = qsv_retrieve_enc_params(avctx, q);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error retrieving encoding parameters.\n");
return ret;
}
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame)
return AVERROR(ENOMEM);
q->avctx = avctx;
return 0;
}
static void clear_unused_frames(QSVEncContext *q)
{
QSVFrame *cur = q->work_frames;
while (cur) {
if (cur->surface && !cur->surface->Data.Locked) {
cur->surface = NULL;
av_frame_unref(cur->frame);
}
cur = cur->next;
}
}
static int get_free_frame(QSVEncContext *q, QSVFrame **f)
{
QSVFrame *frame, **last;
clear_unused_frames(q);
frame = q->work_frames;
last = &q->work_frames;
while (frame) {
if (!frame->surface) {
*f = frame;
return 0;
}
last = &frame->next;
frame = frame->next;
}
frame = av_mallocz(sizeof(*frame));
if (!frame)
return AVERROR(ENOMEM);
frame->frame = av_frame_alloc();
if (!frame->frame) {
av_freep(&frame);
return AVERROR(ENOMEM);
}
*last = frame;
*f = frame;
return 0;
}
static int submit_frame(QSVEncContext *q, const AVFrame *frame,
mfxFrameSurface1 **surface)
{
QSVFrame *qf;
int ret;
ret = get_free_frame(q, &qf);
if (ret < 0)
return ret;
if (frame->format == AV_PIX_FMT_QSV) {
ret = av_frame_ref(qf->frame, frame);
if (ret < 0)
return ret;
qf->surface = (mfxFrameSurface1*)qf->frame->data[3];
*surface = qf->surface;
return 0;
}
/* make a copy if the input is not padded as libmfx requires */
if (frame->height & 31 || frame->linesize[0] & 15) {
qf->frame->height = FFALIGN(frame->height, 32);
qf->frame->width = FFALIGN(frame->width, 16);
ret = ff_get_buffer(q->avctx, qf->frame, AV_GET_BUFFER_FLAG_REF);
if (ret < 0)
return ret;
qf->frame->height = frame->height;
qf->frame->width = frame->width;
ret = av_frame_copy(qf->frame, frame);
if (ret < 0) {
av_frame_unref(qf->frame);
return ret;
}
} else {
ret = av_frame_ref(qf->frame, frame);
if (ret < 0)
return ret;
}
qf->surface_internal.Info = q->param.mfx.FrameInfo;
qf->surface_internal.Info.PicStruct =
!frame->interlaced_frame ? MFX_PICSTRUCT_PROGRESSIVE :
frame->top_field_first ? MFX_PICSTRUCT_FIELD_TFF :
MFX_PICSTRUCT_FIELD_BFF;
if (frame->repeat_pict == 1)
qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FIELD_REPEATED;
else if (frame->repeat_pict == 2)
qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FRAME_DOUBLING;
else if (frame->repeat_pict == 4)
qf->surface_internal.Info.PicStruct |= MFX_PICSTRUCT_FRAME_TRIPLING;
qf->surface_internal.Data.PitchLow = qf->frame->linesize[0];
qf->surface_internal.Data.Y = qf->frame->data[0];
qf->surface_internal.Data.UV = qf->frame->data[1];
qf->surface_internal.Data.TimeStamp = av_rescale_q(frame->pts, q->avctx->time_base, (AVRational){1, 90000});
qf->surface = &qf->surface_internal;
*surface = qf->surface;
return 0;
}
static void print_interlace_msg(AVCodecContext *avctx, QSVEncContext *q)
{
if (q->param.mfx.CodecId == MFX_CODEC_AVC) {
if (q->param.mfx.CodecProfile == MFX_PROFILE_AVC_BASELINE ||
q->param.mfx.CodecLevel < MFX_LEVEL_AVC_21 ||
q->param.mfx.CodecLevel > MFX_LEVEL_AVC_41)
av_log(avctx, AV_LOG_WARNING,
"Interlaced coding is supported"
" at Main/High Profile Level 2.1-4.1\n");
}
}
int ff_qsv_encode(AVCodecContext *avctx, QSVEncContext *q,
AVPacket *pkt, const AVFrame *frame, int *got_packet)
{
mfxBitstream bs = { { { 0 } } };
mfxFrameSurface1 *surf = NULL;
mfxSyncPoint sync = NULL;
int ret;
if (frame) {
ret = submit_frame(q, frame, &surf);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error submitting the frame for encoding.\n");
return ret;
}
}
ret = ff_alloc_packet(pkt, q->packet_size);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error allocating the output packet\n");
return ret;
}
bs.Data = pkt->data;
bs.MaxLength = pkt->size;
do {
ret = MFXVideoENCODE_EncodeFrameAsync(q->session, NULL, surf, &bs, &sync);
if (ret == MFX_WRN_DEVICE_BUSY)
av_usleep(1);
} while (ret > 0);
if (ret < 0)
return (ret == MFX_ERR_MORE_DATA) ? 0 : ff_qsv_error(ret);
if (ret == MFX_WRN_INCOMPATIBLE_VIDEO_PARAM && frame->interlaced_frame)
print_interlace_msg(avctx, q);
if (sync) {
MFXVideoCORE_SyncOperation(q->session, sync, 60000);
if (bs.FrameType & MFX_FRAMETYPE_I || bs.FrameType & MFX_FRAMETYPE_xI)
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
else if (bs.FrameType & MFX_FRAMETYPE_P || bs.FrameType & MFX_FRAMETYPE_xP)
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
else if (bs.FrameType & MFX_FRAMETYPE_B || bs.FrameType & MFX_FRAMETYPE_xB)
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
pkt->dts = av_rescale_q(bs.DecodeTimeStamp, (AVRational){1, 90000}, avctx->time_base);
pkt->pts = av_rescale_q(bs.TimeStamp, (AVRational){1, 90000}, avctx->time_base);
pkt->size = bs.DataLength;
if (bs.FrameType & MFX_FRAMETYPE_IDR ||
bs.FrameType & MFX_FRAMETYPE_xIDR)
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
}
return 0;
}
int ff_qsv_enc_close(AVCodecContext *avctx, QSVEncContext *q)
{
QSVFrame *cur;
MFXVideoENCODE_Close(q->session);
if (q->internal_session)
MFXClose(q->internal_session);
q->session = NULL;
q->internal_session = NULL;
cur = q->work_frames;
while (cur) {
q->work_frames = cur->next;
av_frame_free(&cur->frame);
av_freep(&cur);
cur = q->work_frames;
}
av_frame_free(&avctx->coded_frame);
return 0;
}
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