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FFmpeg/libavcodec/qsvdec.c
Haihao Xiang ecee3b07cd qsvdec: add support for HW_DEVICE_CTX method 
This allows user set hw_device_ctx instead of hw_frames_ctx for QSV
decoders, hence we may remove the ad-hoc libmfx setup code from FFmpeg.

"-hwaccel_output_format format" is applied to QSV decoders after
removing the ad-hoc libmfx code. In order to keep compatibility with old
commandlines, the default format is set to AV_PIX_FMT_QSV, but this
behavior will be removed in the future. Please set "-hwaccel_output_format qsv"
explicitly if AV_PIX_FMT_QSV is expected.

The normal device stuff works for QSV decoders now, user may use
"-init_hw_device args" to initialise device and "-hwaccel_device
devicename" to select a device for QSV decoders.

"-qsv_device device" which was added for workarounding device selection
in the ad-hoc libmfx code still works

For example:

$> ffmpeg -init_hw_device qsv=qsv:hw_any,child_device=/dev/dri/card0
-hwaccel qsv -c:v h264_qsv -i input.h264  -f null -

/dev/dri/renderD128 is actually open for h264_qsv decoder in the above
command without this patch. After applying this patch, /dev/dri/card0
is used.

$> ffmpeg -init_hw_device vaapi=va:/dev/dri/card0 -init_hw_device
qsv=hw@va -hwaccel_device hw -hwaccel qsv -c:v h264_qsv -i input.h264
-f null -

device hw of type qsv is not usable in the above command without this
patch. After applying this patch, this command works as expected.

Reviewed-by: Soft Works <softworkz@hotmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2021-08-11 13:45:36 -03:00

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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 <stdint.h>
#include <string.h>
#include <sys/types.h>
#include <mfx/mfxvideo.h>
#include "libavutil/common.h"
#include "libavutil/fifo.h"
#include "libavutil/frame.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_qsv.h"
#include "libavutil/mem.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
#include "libavutil/time.h"
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "internal.h"
#include "decode.h"
#include "hwconfig.h"
#include "qsv.h"
#include "qsv_internal.h"
static const AVRational mfx_tb = { 1, 90000 };
#define PTS_TO_MFX_PTS(pts, pts_tb) ((pts) == AV_NOPTS_VALUE ? \
MFX_TIMESTAMP_UNKNOWN : pts_tb.num ? \
av_rescale_q(pts, pts_tb, mfx_tb) : pts)
#define MFX_PTS_TO_PTS(mfx_pts, pts_tb) ((mfx_pts) == MFX_TIMESTAMP_UNKNOWN ? \
AV_NOPTS_VALUE : pts_tb.num ? \
av_rescale_q(mfx_pts, mfx_tb, pts_tb) : mfx_pts)
typedef struct QSVContext {
// the session used for decoding
mfxSession session;
// the session we allocated internally, in case the caller did not provide
// one
QSVSession internal_qs;
QSVFramesContext frames_ctx;
/**
* a linked list of frames currently being used by QSV
*/
QSVFrame *work_frames;
AVFifoBuffer *async_fifo;
int zero_consume_run;
int buffered_count;
int reinit_flag;
enum AVPixelFormat orig_pix_fmt;
uint32_t fourcc;
mfxFrameInfo frame_info;
AVBufferPool *pool;
int initialized;
// options set by the caller
int async_depth;
int iopattern;
int gpu_copy;
char *load_plugins;
mfxExtBuffer **ext_buffers;
int nb_ext_buffers;
} QSVContext;
static const AVCodecHWConfigInternal *const 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_HW_DEVICE_CTX,
.device_type = AV_HWDEVICE_TYPE_QSV,
},
.hwaccel = NULL,
},
NULL
};
static int 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_device_ctx && !avctx->hw_frames_ctx && ret == AV_PIX_FMT_QSV) {
AVHWFramesContext *hwframes_ctx;
AVQSVFramesContext *frames_hwctx;
avctx->hw_frames_ctx = av_hwframe_ctx_alloc(avctx->hw_device_ctx);
if (!avctx->hw_frames_ctx) {
av_log(avctx, AV_LOG_ERROR, "av_hwframe_ctx_alloc failed\n");
return AVERROR(ENOMEM);
}
hwframes_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
frames_hwctx = hwframes_ctx->hwctx;
hwframes_ctx->width = FFALIGN(avctx->coded_width, 32);
hwframes_ctx->height = FFALIGN(avctx->coded_height, 32);
hwframes_ctx->format = AV_PIX_FMT_QSV;
hwframes_ctx->sw_format = avctx->sw_pix_fmt;
hwframes_ctx->initial_pool_size = 64 + avctx->extra_hw_frames;
frames_hwctx->frame_type = MFX_MEMTYPE_VIDEO_MEMORY_DECODER_TARGET;
ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Error initializing a QSV frame pool\n");
av_buffer_unref(&avctx->hw_frames_ctx);
return ret;
}
}
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_context(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,
const AVPacket *avpkt, enum AVPixelFormat pix_fmt,
mfxVideoParam *param)
{
int ret;
mfxExtVideoSignalInfo video_signal_info = { 0 };
mfxExtBuffer *header_ext_params[1] = { (mfxExtBuffer *)&video_signal_info };
mfxBitstream bs = { 0 };
if (avpkt->size) {
bs.Data = avpkt->data;
bs.DataLength = avpkt->size;
bs.MaxLength = bs.DataLength;
bs.TimeStamp = PTS_TO_MFX_PTS(avpkt->pts, avctx->pkt_timebase);
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;
video_signal_info.Header.BufferId = MFX_EXTBUFF_VIDEO_SIGNAL_INFO;
video_signal_info.Header.BufferSz = sizeof(video_signal_info);
// The SDK doesn't support other ext buffers when calling MFXVideoDECODE_DecodeHeader,
// so do not append this buffer to the existent buffer array
param->ExtParam = header_ext_params;
param->NumExtParam = 1;
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");
avctx->color_range = video_signal_info.VideoFullRange ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG;
if (video_signal_info.ColourDescriptionPresent) {
avctx->color_primaries = video_signal_info.ColourPrimaries;
avctx->color_trc = video_signal_info.TransferCharacteristics;
avctx->colorspace = video_signal_info.MatrixCoefficients;
}
param->ExtParam = q->ext_buffers;
param->NumExtParam = q->nb_ext_buffers;
return 0;
}
static int alloc_frame(AVCodecContext *avctx, QSVContext *q, QSVFrame *frame)
{
int ret;
if (q->pool)
ret = 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,
const 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 = PTS_TO_MFX_PTS(avpkt->pts, avctx->pkt_timebase);
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;
frame->pts = MFX_PTS_TO_PTS(outsurf->Data.TimeStamp, avctx->pkt_timebase);
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;
}
static void qsv_decode_close_qsvcontext(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);
}
static int qsv_process_data(AVCodecContext *avctx, QSVContext *q,
AVFrame *frame, int *got_frame, const 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_context(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;
}
enum LoadPlugin {
LOAD_PLUGIN_NONE,
LOAD_PLUGIN_HEVC_SW,
LOAD_PLUGIN_HEVC_HW,
};
typedef struct QSVDecContext {
AVClass *class;
QSVContext qsv;
int load_plugin;
AVFifoBuffer *packet_fifo;
AVPacket buffer_pkt;
} QSVDecContext;
static void qsv_clear_buffers(QSVDecContext *s)
{
AVPacket pkt;
while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
av_packet_unref(&pkt);
}
av_packet_unref(&s->buffer_pkt);
}
static av_cold int qsv_decode_close(AVCodecContext *avctx)
{
QSVDecContext *s = avctx->priv_data;
av_freep(&s->qsv.load_plugins);
qsv_decode_close_qsvcontext(&s->qsv);
qsv_clear_buffers(s);
av_fifo_free(s->packet_fifo);
return 0;
}
static av_cold int qsv_decode_init(AVCodecContext *avctx)
{
QSVDecContext *s = avctx->priv_data;
int ret;
const char *uid = NULL;
if (avctx->codec_id == AV_CODEC_ID_VP8) {
uid = "f622394d8d87452f878c51f2fc9b4131";
} else if (avctx->codec_id == AV_CODEC_ID_VP9) {
uid = "a922394d8d87452f878c51f2fc9b4131";
}
else if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
static const char * const uid_hevcdec_sw = "15dd936825ad475ea34e35f3f54217a6";
static const char * const uid_hevcdec_hw = "33a61c0b4c27454ca8d85dde757c6f8e";
if (s->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 {
if (s->load_plugin == LOAD_PLUGIN_HEVC_SW)
uid = uid_hevcdec_sw;
else
uid = uid_hevcdec_hw;
}
}
if (uid) {
av_freep(&s->qsv.load_plugins);
s->qsv.load_plugins = av_strdup(uid);
if (!s->qsv.load_plugins)
return AVERROR(ENOMEM);
}
s->qsv.orig_pix_fmt = AV_PIX_FMT_NV12;
s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
if (!s->packet_fifo) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (!avctx->pkt_timebase.num)
av_log(avctx, AV_LOG_WARNING, "Invalid pkt_timebase, passing timestamps as-is.\n");
return 0;
fail:
qsv_decode_close(avctx);
return ret;
}
static int qsv_decode_frame(AVCodecContext *avctx, void *data,
int *got_frame, AVPacket *avpkt)
{
QSVDecContext *s = avctx->priv_data;
AVFrame *frame = data;
int ret;
/* buffer the input packet */
if (avpkt->size) {
AVPacket input_ref;
if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
ret = av_fifo_realloc2(s->packet_fifo,
av_fifo_size(s->packet_fifo) + sizeof(input_ref));
if (ret < 0)
return ret;
}
ret = av_packet_ref(&input_ref, avpkt);
if (ret < 0)
return ret;
av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
}
/* process buffered data */
while (!*got_frame) {
/* prepare the input data */
if (s->buffer_pkt.size <= 0) {
/* no more data */
if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
return avpkt->size ? avpkt->size : qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
/* in progress of reinit, no read from fifo and keep the buffer_pkt */
if (!s->qsv.reinit_flag) {
av_packet_unref(&s->buffer_pkt);
av_fifo_generic_read(s->packet_fifo, &s->buffer_pkt, sizeof(s->buffer_pkt), NULL);
}
}
ret = qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->buffer_pkt);
if (ret < 0){
/* Drop buffer_pkt when failed to decode the packet. Otherwise,
the decoder will keep decoding the failure packet. */
av_packet_unref(&s->buffer_pkt);
return ret;
}
if (s->qsv.reinit_flag)
continue;
s->buffer_pkt.size -= ret;
s->buffer_pkt.data += ret;
}
return avpkt->size;
}
static void qsv_decode_flush(AVCodecContext *avctx)
{
QSVDecContext *s = avctx->priv_data;
qsv_clear_buffers(s);
s->qsv.orig_pix_fmt = AV_PIX_FMT_NONE;
s->qsv.initialized = 0;
}
#define OFFSET(x) offsetof(QSVDecContext, x)
#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
#define DEFINE_QSV_DECODER_WITH_OPTION(x, X, bsf_name, opt) \
static const AVClass x##_qsv_class = { \
.class_name = #x "_qsv", \
.item_name = av_default_item_name, \
.option = opt, \
.version = LIBAVUTIL_VERSION_INT, \
}; \
const AVCodec ff_##x##_qsv_decoder = { \
.name = #x "_qsv", \
.long_name = NULL_IF_CONFIG_SMALL(#X " video (Intel Quick Sync Video acceleration)"), \
.priv_data_size = sizeof(QSVDecContext), \
.type = AVMEDIA_TYPE_VIDEO, \
.id = AV_CODEC_ID_##X, \
.init = qsv_decode_init, \
.decode = qsv_decode_frame, \
.flush = qsv_decode_flush, \
.close = qsv_decode_close, \
.bsfs = bsf_name, \
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1 | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HYBRID, \
.priv_class = &x##_qsv_class, \
.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12, \
AV_PIX_FMT_P010, \
AV_PIX_FMT_QSV, \
AV_PIX_FMT_NONE }, \
.hw_configs = qsv_hw_configs, \
.wrapper_name = "qsv", \
}; \
#define DEFINE_QSV_DECODER(x, X, bsf_name) DEFINE_QSV_DECODER_WITH_OPTION(x, X, bsf_name, options)
#if CONFIG_HEVC_QSV_DECODER
static const AVOption hevc_options[] = {
{ "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 1, INT_MAX, VD },
{ "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, VD, "load_plugin" },
{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" },
{ "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
{ "hevc_hw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_HW }, 0, 0, VD, "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, VD },
{ "gpu_copy", "A GPU-accelerated copy between video and system memory", OFFSET(qsv.gpu_copy), AV_OPT_TYPE_INT, { .i64 = MFX_GPUCOPY_DEFAULT }, MFX_GPUCOPY_DEFAULT, MFX_GPUCOPY_OFF, VD, "gpu_copy"},
{ "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_GPUCOPY_DEFAULT }, 0, 0, VD, "gpu_copy"},
{ "on", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_GPUCOPY_ON }, 0, 0, VD, "gpu_copy"},
{ "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_GPUCOPY_OFF }, 0, 0, VD, "gpu_copy"},
{ NULL },
};
DEFINE_QSV_DECODER_WITH_OPTION(hevc, HEVC, "hevc_mp4toannexb", hevc_options)
#endif
static const AVOption options[] = {
{ "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 1, INT_MAX, VD },
{ "gpu_copy", "A GPU-accelerated copy between video and system memory", OFFSET(qsv.gpu_copy), AV_OPT_TYPE_INT, { .i64 = MFX_GPUCOPY_DEFAULT }, MFX_GPUCOPY_DEFAULT, MFX_GPUCOPY_OFF, VD, "gpu_copy"},
{ "default", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_GPUCOPY_DEFAULT }, 0, 0, VD, "gpu_copy"},
{ "on", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_GPUCOPY_ON }, 0, 0, VD, "gpu_copy"},
{ "off", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = MFX_GPUCOPY_OFF }, 0, 0, VD, "gpu_copy"},
{ NULL },
};
#if CONFIG_H264_QSV_DECODER
DEFINE_QSV_DECODER(h264, H264, "h264_mp4toannexb")
#endif
#if CONFIG_MPEG2_QSV_DECODER
DEFINE_QSV_DECODER(mpeg2, MPEG2VIDEO, NULL)
#endif
#if CONFIG_VC1_QSV_DECODER
DEFINE_QSV_DECODER(vc1, VC1, NULL)
#endif
#if CONFIG_MJPEG_QSV_DECODER
DEFINE_QSV_DECODER(mjpeg, MJPEG, NULL)
#endif
#if CONFIG_VP8_QSV_DECODER
DEFINE_QSV_DECODER(vp8, VP8, NULL)
#endif
#if CONFIG_VP9_QSV_DECODER
DEFINE_QSV_DECODER(vp9, VP9, NULL)
#endif
#if CONFIG_AV1_QSV_DECODER
DEFINE_QSV_DECODER(av1, AV1, NULL)
#endif
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