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FFmpeg/libavcodec/qsvdec.c
Andreas Rheinhardt a247ac640d avcodec: Constify AVCodecs 
Given that the AVCodec.next pointer has now been removed, most of the
AVCodecs are not modified at all any more and can therefore be made
const (as this patch does); the only exceptions are the very few codecs
for external libraries that have a init_static_data callback.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2021-04-27 10:43:15 -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"
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_AD_HOC,
.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_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;
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 = 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 = 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;
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;
}
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;
}
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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