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ffmpeg/libavcodec/qsvdec.c

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/*
* Intel MediaSDK QSV codec-independent code
*
* copyright (c) 2013 Luca Barbato
* copyright (c) 2015 Anton Khirnov <anton@khirnov.net>
*
* 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 <string.h>
#include <sys/types.h>
#include <mfx/mfxvideo.h>
#include "libavutil/common.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_qsv.h"
#include "libavutil/mem.h"
#include "libavutil/log.h"
#include "libavutil/pixdesc.h"
#include "libavutil/pixfmt.h"
#include "libavutil/time.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "internal.h"
#include "decode.h"
#include "qsv.h"
#include "qsv_internal.h"
#include "qsvdec.h"
const AVCodecHWConfigInternal *const ff_qsv_hw_configs[] = {
&(const AVCodecHWConfigInternal) {
.public = {
.pix_fmt = AV_PIX_FMT_QSV,
.methods = AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX |
AV_CODEC_HW_CONFIG_METHOD_AD_HOC,
.device_type = AV_HWDEVICE_TYPE_QSV,
},
.hwaccel = NULL,
},
NULL
};
static int ff_qsv_get_continuous_buffer(AVCodecContext *avctx, AVFrame *frame, AVBufferPool *pool)
{
int ret = 0;
ff_decode_frame_props(avctx, frame);
frame->width = avctx->width;
frame->height = avctx->height;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_NV12:
frame->linesize[0] = FFALIGN(avctx->width, 128);
break;
case AV_PIX_FMT_P010:
frame->linesize[0] = 2 * FFALIGN(avctx->width, 128);
break;
default:
av_log(avctx, AV_LOG_ERROR, "Unsupported pixel format.\n");
return AVERROR(EINVAL);
}
frame->linesize[1] = frame->linesize[0];
frame->buf[0] = av_buffer_pool_get(pool);
if (!frame->buf[0])
return AVERROR(ENOMEM);
frame->data[0] = frame->buf[0]->data;
frame->data[1] = frame->data[0] +
frame->linesize[0] * FFALIGN(avctx->height, 64);
ret = ff_attach_decode_data(frame);
if (ret < 0)
return ret;
return 0;
}
static int qsv_init_session(AVCodecContext *avctx, QSVContext *q, mfxSession session,
AVBufferRef *hw_frames_ref, AVBufferRef *hw_device_ref)
{
int ret;
if (q->gpu_copy == MFX_GPUCOPY_ON &&
!(q->iopattern & MFX_IOPATTERN_OUT_SYSTEM_MEMORY)) {
av_log(avctx, AV_LOG_WARNING, "GPU-accelerated memory copy "
"only works in system memory mode.\n");
q->gpu_copy = MFX_GPUCOPY_OFF;
}
if (session) {
q->session = session;
} else if (hw_frames_ref) {
if (q->internal_qs.session) {
MFXClose(q->internal_qs.session);
q->internal_qs.session = NULL;
}
av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
q->frames_ctx.hw_frames_ctx = av_buffer_ref(hw_frames_ref);
if (!q->frames_ctx.hw_frames_ctx)
return AVERROR(ENOMEM);
ret = ff_qsv_init_session_frames(avctx, &q->internal_qs.session,
&q->frames_ctx, q->load_plugins,
q->iopattern == MFX_IOPATTERN_OUT_OPAQUE_MEMORY,
q->gpu_copy);
if (ret < 0) {
av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
return ret;
}
q->session = q->internal_qs.session;
} else if (hw_device_ref) {
if (q->internal_qs.session) {
MFXClose(q->internal_qs.session);
q->internal_qs.session = NULL;
}
ret = ff_qsv_init_session_device(avctx, &q->internal_qs.session,
hw_device_ref, q->load_plugins, q->gpu_copy);
if (ret < 0)
return ret;
q->session = q->internal_qs.session;
} else {
if (!q->internal_qs.session) {
ret = ff_qsv_init_internal_session(avctx, &q->internal_qs,
q->load_plugins, q->gpu_copy);
if (ret < 0)
return ret;
}
q->session = q->internal_qs.session;
}
/* make sure the decoder is uninitialized */
MFXVideoDECODE_Close(q->session);
return 0;
}
static inline unsigned int qsv_fifo_item_size(void)
{
return sizeof(mfxSyncPoint*) + sizeof(QSVFrame*);
}
static inline unsigned int qsv_fifo_size(const AVFifoBuffer* fifo)
{
return av_fifo_size(fifo) / qsv_fifo_item_size();
}
static int qsv_decode_preinit(AVCodecContext *avctx, QSVContext *q, enum AVPixelFormat pix_fmt, mfxVideoParam *param)
{
mfxSession session = NULL;
int iopattern = 0;
int ret;
enum AVPixelFormat pix_fmts[3] = {
AV_PIX_FMT_QSV, /* opaque format in case of video memory output */
pix_fmt, /* system memory format obtained from bitstream parser */
AV_PIX_FMT_NONE };
ret = ff_get_format(avctx, pix_fmts);
if (ret < 0) {
q->orig_pix_fmt = avctx->pix_fmt = AV_PIX_FMT_NONE;
return ret;
}
if (!q->async_fifo) {
q->async_fifo = av_fifo_alloc(q->async_depth * qsv_fifo_item_size());
if (!q->async_fifo)
return AVERROR(ENOMEM);
}
if (avctx->pix_fmt == AV_PIX_FMT_QSV && avctx->hwaccel_context) {
AVQSVContext *user_ctx = avctx->hwaccel_context;
session = user_ctx->session;
iopattern = user_ctx->iopattern;
q->ext_buffers = user_ctx->ext_buffers;
q->nb_ext_buffers = user_ctx->nb_ext_buffers;
}
if (avctx->hw_frames_ctx) {
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
AVQSVFramesContext *frames_hwctx = frames_ctx->hwctx;
if (!iopattern) {
if (frames_hwctx->frame_type & MFX_MEMTYPE_OPAQUE_FRAME)
iopattern = MFX_IOPATTERN_OUT_OPAQUE_MEMORY;
else if (frames_hwctx->frame_type & MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET)
iopattern = MFX_IOPATTERN_OUT_VIDEO_MEMORY;
}
}
if (!iopattern)
iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
q->iopattern = iopattern;
ff_qsv_print_iopattern(avctx, q->iopattern, "Decoder");
ret = qsv_init_session(avctx, q, session, avctx->hw_frames_ctx, avctx->hw_device_ctx);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error initializing an MFX session\n");
return ret;
}
param->IOPattern = q->iopattern;
param->AsyncDepth = q->async_depth;
param->ExtParam = q->ext_buffers;
param->NumExtParam = q->nb_ext_buffers;
return 0;
}
static int qsv_decode_init(AVCodecContext *avctx, QSVContext *q, mfxVideoParam *param)
{
int ret;
avctx->width = param->mfx.FrameInfo.CropW;
avctx->height = param->mfx.FrameInfo.CropH;
avctx->coded_width = param->mfx.FrameInfo.Width;
avctx->coded_height = param->mfx.FrameInfo.Height;
avctx->level = param->mfx.CodecLevel;
avctx->profile = param->mfx.CodecProfile;
avctx->field_order = ff_qsv_map_picstruct(param->mfx.FrameInfo.PicStruct);
avctx->pix_fmt = ff_qsv_map_fourcc(param->mfx.FrameInfo.FourCC);
ret = MFXVideoDECODE_Init(q->session, param);
if (ret < 0)
return ff_qsv_print_error(avctx, ret,
"Error initializing the MFX video decoder");
q->frame_info = param->mfx.FrameInfo;
if (!avctx->hw_frames_ctx)
q->pool = av_buffer_pool_init(av_image_get_buffer_size(avctx->pix_fmt,
FFALIGN(avctx->width, 128), FFALIGN(avctx->height, 64), 1), av_buffer_allocz);
return 0;
}
static int qsv_decode_header(AVCodecContext *avctx, QSVContext *q, AVPacket *avpkt, enum AVPixelFormat pix_fmt, mfxVideoParam *param)
{
int ret;
mfxBitstream bs = { 0 };
if (avpkt->size) {
bs.Data = avpkt->data;
bs.DataLength = avpkt->size;
bs.MaxLength = bs.DataLength;
bs.TimeStamp = avpkt->pts;
if (avctx->field_order == AV_FIELD_PROGRESSIVE)
bs.DataFlag |= MFX_BITSTREAM_COMPLETE_FRAME;
} else
return AVERROR_INVALIDDATA;
if(!q->session) {
ret = qsv_decode_preinit(avctx, q, pix_fmt, param);
if (ret < 0)
return ret;
}
ret = ff_qsv_codec_id_to_mfx(avctx->codec_id);
if (ret < 0)
return ret;
param->mfx.CodecId = ret;
ret = MFXVideoDECODE_DecodeHeader(q->session, &bs, param);
if (MFX_ERR_MORE_DATA == ret) {
return AVERROR(EAGAIN);
}
if (ret < 0)
return ff_qsv_print_error(avctx, ret,
"Error decoding stream header");
return 0;
}
static int alloc_frame(AVCodecContext *avctx, QSVContext *q, QSVFrame *frame)
{
int ret;
if (q->pool)
ret = ff_qsv_get_continuous_buffer(avctx, frame->frame, q->pool);
else
ret = ff_get_buffer(avctx, frame->frame, AV_GET_BUFFER_FLAG_REF);
if (ret < 0)
return ret;
if (frame->frame->format == AV_PIX_FMT_QSV) {
frame->surface = *(mfxFrameSurface1*)frame->frame->data[3];
} else {
frame->surface.Info = q->frame_info;
frame->surface.Data.PitchLow = frame->frame->linesize[0];
frame->surface.Data.Y = frame->frame->data[0];
frame->surface.Data.UV = frame->frame->data[1];
}
if (q->frames_ctx.mids) {
ret = ff_qsv_find_surface_idx(&q->frames_ctx, frame);
if (ret < 0)
return ret;
frame->surface.Data.MemId = &q->frames_ctx.mids[ret];
}
frame->surface.Data.ExtParam = &frame->ext_param;
frame->surface.Data.NumExtParam = 1;
frame->ext_param = (mfxExtBuffer*)&frame->dec_info;
frame->dec_info.Header.BufferId = MFX_EXTBUFF_DECODED_FRAME_INFO;
frame->dec_info.Header.BufferSz = sizeof(frame->dec_info);
frame->used = 1;
return 0;
}
static void qsv_clear_unused_frames(QSVContext *q)
{
QSVFrame *cur = q->work_frames;
while (cur) {
if (cur->used && !cur->surface.Data.Locked && !cur->queued) {
cur->used = 0;
av_frame_unref(cur->frame);
}
cur = cur->next;
}
}
static int get_surface(AVCodecContext *avctx, QSVContext *q, mfxFrameSurface1 **surf)
{
QSVFrame *frame, **last;
int ret;
qsv_clear_unused_frames(q);
frame = q->work_frames;
last = &q->work_frames;
while (frame) {
if (!frame->used) {
ret = alloc_frame(avctx, q, frame);
if (ret < 0)
return ret;
*surf = &frame->surface;
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;
ret = alloc_frame(avctx, q, frame);
if (ret < 0)
return ret;
*surf = &frame->surface;
return 0;
}
static QSVFrame *find_frame(QSVContext *q, mfxFrameSurface1 *surf)
{
QSVFrame *cur = q->work_frames;
while (cur) {
if (surf == &cur->surface)
return cur;
cur = cur->next;
}
return NULL;
}
static int qsv_decode(AVCodecContext *avctx, QSVContext *q,
AVFrame *frame, int *got_frame,
AVPacket *avpkt)
{
QSVFrame *out_frame;
mfxFrameSurface1 *insurf;
mfxFrameSurface1 *outsurf;
mfxSyncPoint *sync;
mfxBitstream bs = { { { 0 } } };
int ret;
if (avpkt->size) {
bs.Data = avpkt->data;
bs.DataLength = avpkt->size;
bs.MaxLength = bs.DataLength;
bs.TimeStamp = avpkt->pts;
if (avctx->field_order == AV_FIELD_PROGRESSIVE)
bs.DataFlag |= MFX_BITSTREAM_COMPLETE_FRAME;
}
sync = av_mallocz(sizeof(*sync));
if (!sync) {
av_freep(&sync);
return AVERROR(ENOMEM);
}
do {
ret = get_surface(avctx, q, &insurf);
if (ret < 0) {
av_freep(&sync);
return ret;
}
ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
insurf, &outsurf, sync);
if (ret == MFX_WRN_DEVICE_BUSY)
av_usleep(500);
} while (ret == MFX_WRN_DEVICE_BUSY || ret == MFX_ERR_MORE_SURFACE);
if (ret != MFX_ERR_NONE &&
ret != MFX_ERR_MORE_DATA &&
ret != MFX_WRN_VIDEO_PARAM_CHANGED &&
ret != MFX_ERR_MORE_SURFACE) {
av_freep(&sync);
return ff_qsv_print_error(avctx, ret,
"Error during QSV decoding.");
}
/* make sure we do not enter an infinite loop if the SDK
* did not consume any data and did not return anything */
if (!*sync && !bs.DataOffset) {
bs.DataOffset = avpkt->size;
++q->zero_consume_run;
if (q->zero_consume_run > 1)
ff_qsv_print_warning(avctx, ret, "A decode call did not consume any data");
} else if (!*sync && bs.DataOffset) {
++q->buffered_count;
} else {
q->zero_consume_run = 0;
}
if (*sync) {
QSVFrame *out_frame = find_frame(q, outsurf);
if (!out_frame) {
av_log(avctx, AV_LOG_ERROR,
"The returned surface does not correspond to any frame\n");
av_freep(&sync);
return AVERROR_BUG;
}
out_frame->queued = 1;
av_fifo_generic_write(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
av_fifo_generic_write(q->async_fifo, &sync, sizeof(sync), NULL);
} else {
av_freep(&sync);
}
if ((qsv_fifo_size(q->async_fifo) >= q->async_depth) ||
(!avpkt->size && av_fifo_size(q->async_fifo))) {
AVFrame *src_frame;
av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
out_frame->queued = 0;
if (avctx->pix_fmt != AV_PIX_FMT_QSV) {
do {
ret = MFXVideoCORE_SyncOperation(q->session, *sync, 1000);
} while (ret == MFX_WRN_IN_EXECUTION);
}
av_freep(&sync);
src_frame = out_frame->frame;
ret = av_frame_ref(frame, src_frame);
if (ret < 0)
return ret;
outsurf = &out_frame->surface;
#if FF_API_PKT_PTS
FF_DISABLE_DEPRECATION_WARNINGS
frame->pkt_pts = outsurf->Data.TimeStamp;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
frame->pts = outsurf->Data.TimeStamp;
frame->repeat_pict =
outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_TRIPLING ? 4 :
outsurf->Info.PicStruct & MFX_PICSTRUCT_FRAME_DOUBLING ? 2 :
outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_REPEATED ? 1 : 0;
frame->top_field_first =
outsurf->Info.PicStruct & MFX_PICSTRUCT_FIELD_TFF;
frame->interlaced_frame =
!(outsurf->Info.PicStruct & MFX_PICSTRUCT_PROGRESSIVE);
frame->pict_type = ff_qsv_map_pictype(out_frame->dec_info.FrameType);
//Key frame is IDR frame is only suitable for H264. For HEVC, IRAPs are key frames.
if (avctx->codec_id == AV_CODEC_ID_H264)
frame->key_frame = !!(out_frame->dec_info.FrameType & MFX_FRAMETYPE_IDR);
/* update the surface properties */
if (avctx->pix_fmt == AV_PIX_FMT_QSV)
((mfxFrameSurface1*)frame->data[3])->Info = outsurf->Info;
*got_frame = 1;
}
return bs.DataOffset;
}
int ff_qsv_decode_close(QSVContext *q)
{
QSVFrame *cur = q->work_frames;
if (q->session)
MFXVideoDECODE_Close(q->session);
while (q->async_fifo && av_fifo_size(q->async_fifo)) {
QSVFrame *out_frame;
mfxSyncPoint *sync;
av_fifo_generic_read(q->async_fifo, &out_frame, sizeof(out_frame), NULL);
av_fifo_generic_read(q->async_fifo, &sync, sizeof(sync), NULL);
av_freep(&sync);
}
while (cur) {
q->work_frames = cur->next;
av_frame_free(&cur->frame);
av_freep(&cur);
cur = q->work_frames;
}
av_fifo_free(q->async_fifo);
q->async_fifo = NULL;
ff_qsv_close_internal_session(&q->internal_qs);
av_buffer_unref(&q->frames_ctx.hw_frames_ctx);
av_buffer_unref(&q->frames_ctx.mids_buf);
av_buffer_pool_uninit(&q->pool);
return 0;
}
int ff_qsv_process_data(AVCodecContext *avctx, QSVContext *q,
AVFrame *frame, int *got_frame, AVPacket *pkt)
{
int ret;
mfxVideoParam param = { 0 };
enum AVPixelFormat pix_fmt = AV_PIX_FMT_NV12;
if (!pkt->size)
return qsv_decode(avctx, q, frame, got_frame, pkt);
/* TODO: flush delayed frames on reinit */
// sw_pix_fmt, coded_width/height should be set for ff_get_format(),
// assume sw_pix_fmt is NV12 and coded_width/height to be 1280x720,
// the assumption may be not corret but will be updated after header decoded if not true.
if (q->orig_pix_fmt != AV_PIX_FMT_NONE)
pix_fmt = q->orig_pix_fmt;
if (!avctx->coded_width)
avctx->coded_width = 1280;
if (!avctx->coded_height)
avctx->coded_height = 720;
ret = qsv_decode_header(avctx, q, pkt, pix_fmt, &param);
if (ret >= 0 && (q->orig_pix_fmt != ff_qsv_map_fourcc(param.mfx.FrameInfo.FourCC) ||
avctx->coded_width != param.mfx.FrameInfo.Width ||
avctx->coded_height != param.mfx.FrameInfo.Height)) {
AVPacket zero_pkt = {0};
if (q->buffered_count) {
q->reinit_flag = 1;
/* decode zero-size pkt to flush the buffered pkt before reinit */
q->buffered_count--;
return qsv_decode(avctx, q, frame, got_frame, &zero_pkt);
}
q->reinit_flag = 0;
q->orig_pix_fmt = avctx->pix_fmt = pix_fmt = ff_qsv_map_fourcc(param.mfx.FrameInfo.FourCC);
avctx->coded_width = param.mfx.FrameInfo.Width;
avctx->coded_height = param.mfx.FrameInfo.Height;
ret = qsv_decode_preinit(avctx, q, pix_fmt, &param);
if (ret < 0)
goto reinit_fail;
q->initialized = 0;
}
if (!q->initialized) {
ret = qsv_decode_init(avctx, q, &param);
if (ret < 0)
goto reinit_fail;
q->initialized = 1;
}
return qsv_decode(avctx, q, frame, got_frame, pkt);
reinit_fail:
q->orig_pix_fmt = avctx->pix_fmt = AV_PIX_FMT_NONE;
return ret;
}
void ff_qsv_decode_flush(AVCodecContext *avctx, QSVContext *q)
{
q->orig_pix_fmt = AV_PIX_FMT_NONE;
q->initialized = 0;
}
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