int ff_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;
int n_out_frames;
int buffered = 0;
if (!q->engine_ready) {
ret = ff_qsv_decode_init(avctx, q, avpkt);
if (ret)
return ret;
}
if (avpkt->size ) {
if (av_fifo_size(q->input_fifo)) {
/* we have got rest of previous packet into buffer */
if (av_fifo_space(q->input_fifo) < avpkt->size) {
ret = av_fifo_grow(q->input_fifo, avpkt->size);
if (ret < 0)
return ret;
}
av_fifo_generic_write(q->input_fifo, avpkt->data, avpkt->size, NULL);
bs.Data = q->input_fifo->rptr;
bs.DataLength = av_fifo_size(q->input_fifo);
buffered = 1;
} else {
bs.Data = avpkt->data;
bs.DataLength = avpkt->size;
}
bs.MaxLength = bs.DataLength;
bs.TimeStamp = avpkt->pts;
}
while (1) {
ret = get_surface(avctx, q, &insurf);
if (ret < 0)
return ret;
do {
ret = MFXVideoDECODE_DecodeFrameAsync(q->session, avpkt->size ? &bs : NULL,
insurf, &outsurf, &sync);
if (ret != MFX_WRN_DEVICE_BUSY)
break;
av_usleep(500);
} while (1);
if (MFX_WRN_VIDEO_PARAM_CHANGED==ret) {
/* TODO: handle here sequence header changing */
}
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");
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);
continue;
}
if (MFX_ERR_MORE_SURFACE != ret && ret < 0)
break;
}
/* 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) {
av_log(avctx, AV_LOG_WARNING, "A decode call did not consume any data\n");
bs.DataOffset = avpkt->size;
}
if (buffered) {
qsv_fifo_relocate(q->input_fifo, bs.DataOffset);
} else if (bs.DataOffset!=avpkt->size) {
/* some data of packet was not consumed. store it to local buffer */
av_fifo_generic_write(q->input_fifo, avpkt->data+bs.DataOffset,
avpkt->size - bs.DataOffset, NULL);
}
if (MFX_ERR_MORE_DATA!=ret && ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Error %d during QSV decoding.\n", ret);
return ff_qsv_error(ret);
}
n_out_frames = av_fifo_size(q->async_fifo) / (sizeof(out_frame)+sizeof(sync));
if (n_out_frames > q->async_depth || (!avpkt->size && n_out_frames) ) {
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;
MFXVideoCORE_SyncOperation(q->session, sync, 60000);
src_frame = out_frame->frame;
ret = av_frame_ref(frame, src_frame);
if (ret < 0)
return ret;
outsurf = out_frame->surface;
frame->pkt_pts = 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);
*got_frame = 1;
}
return avpkt->size;
}
int main(void)
{
/* create a FIFO buffer */
AVFifoBuffer *fifo = av_fifo_alloc(13 * sizeof(int));
int i, j, n, *p;
/* fill data */
for (i = 0; av_fifo_space(fifo) >= sizeof(int); i++)
av_fifo_generic_write(fifo, &i, sizeof(int), NULL);
/* peek at FIFO */
n = av_fifo_size(fifo) / sizeof(int);
for (i = -n + 1; i < n; i++) {
int *v = (int *)av_fifo_peek2(fifo, i * sizeof(int));
printf("%d: %d\n", i, *v);
}
printf("\n");
/* peek_at at FIFO */
n = av_fifo_size(fifo) / sizeof(int);
for (i = 0; i < n; i++) {
av_fifo_generic_peek_at(fifo, &j, i * sizeof(int), sizeof(j), NULL);
printf("%d: %d\n", i, j);
}
printf("\n");
/* generic peek at FIFO */
n = av_fifo_size(fifo);
p = malloc(n);
if (p == NULL) {
fprintf(stderr, "failed to allocate memory.\n");
exit(1);
}
(void) av_fifo_generic_peek(fifo, p, n, NULL);
/* read data at p */
n /= sizeof(int);
for(i = 0; i < n; ++i)
printf("%d: %d\n", i, p[i]);
putchar('\n');
/* read data */
for (i = 0; av_fifo_size(fifo) >= sizeof(int); i++) {
av_fifo_generic_read(fifo, &j, sizeof(int), NULL);
printf("%d ", j);
}
printf("\n");
/* test *ndx overflow */
av_fifo_reset(fifo);
fifo->rndx = fifo->wndx = ~(uint32_t)0 - 5;
/* fill data */
for (i = 0; av_fifo_space(fifo) >= sizeof(int); i++)
av_fifo_generic_write(fifo, &i, sizeof(int), NULL);
/* peek_at at FIFO */
n = av_fifo_size(fifo) / sizeof(int);
for (i = 0; i < n; i++) {
av_fifo_generic_peek_at(fifo, &j, i * sizeof(int), sizeof(j), NULL);
printf("%d: %d\n", i, j);
}
putchar('\n');
/* test fifo_grow */
(void) av_fifo_grow(fifo, 15 * sizeof(int));
/* fill data */
n = av_fifo_size(fifo) / sizeof(int);
for (i = n; av_fifo_space(fifo) >= sizeof(int); ++i)
av_fifo_generic_write(fifo, &i, sizeof(int), NULL);
/* peek_at at FIFO */
n = av_fifo_size(fifo) / sizeof(int);
for (i = 0; i < n; i++) {
av_fifo_generic_peek_at(fifo, &j, i * sizeof(int), sizeof(j), NULL);
printf("%d: %d\n", i, j);
}
av_fifo_free(fifo);
free(p);
return 0;
}
