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dxva2_vc1: support multiple slices

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This commit is contained in:
Hendrik Leppkes 2016-11-15 10:28:54 +01:00
parent 36e27c87e7
commit 99ee8ee093
1 changed files with 72 additions and 34 deletions
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106
libavcodec/dxva2_vc1.c
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@ -29,9 +29,11 @@
// potentially newer version.
#include "dxva2_internal.h"
#define MAX_SLICES 1024
struct dxva2_picture_context {
DXVA_PictureParameters pp;
DXVA_SliceInfo si;
unsigned slice_count;
DXVA_SliceInfo slice[MAX_SLICES];
const uint8_t *bitstream;
unsigned bitstream_size;
@ -174,7 +176,8 @@ static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
slice->bStartCodeBitOffset = 0;
slice->bReservedBits = (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) ? v->bfraction_lut_index + 9 : 0;
slice->wMBbitOffset = v->p_frame_skipped ? 0xffff : get_bits_count(&s->gb) + (avctx->codec_id == AV_CODEC_ID_VC1 ? 32 : 0);
slice->wNumberMBsInSlice = s->mb_width * s->mb_height; /* XXX We assume 1 slice */
/* XXX We store the index of the first MB and it will be fixed later */
slice->wNumberMBsInSlice = (s->mb_y >> v->field_mode) * s->mb_width + s->mb_x;
slice->wQuantizerScaleCode = v->pq;
slice->wBadSliceChopping = 0;
}
@ -188,18 +191,15 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
const MpegEncContext *s = &v->s;
struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
DXVA_SliceInfo *slice = &ctx_pic->si;
static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0;
const unsigned slice_size = slice->dwSliceBitsInBuffer / 8;
const unsigned padding = 128 - ((start_code_size + slice_size) & 127);
const unsigned data_size = start_code_size + slice_size + padding;
const unsigned mb_count = s->mb_width * (s->mb_height >> v->field_mode);
DXVA_SliceInfo *slice = NULL;
void *dxva_data_ptr;
uint8_t *dxva_data;
uint8_t *dxva_data, *current, *end;
unsigned dxva_size;
int result;
unsigned padding;
unsigned i;
unsigned type;
#if CONFIG_D3D11VA
@ -223,19 +223,49 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
#endif
dxva_data = dxva_data_ptr;
result = data_size <= dxva_size ? 0 : -1;
if (!result) {
if (start_code_size > 0) {
memcpy(dxva_data, start_code, start_code_size);
if (v->second_field)
dxva_data[3] = 0x0c;
current = dxva_data;
end = dxva_data + dxva_size;
for (i = 0; i < ctx_pic->slice_count; i++) {
unsigned position, size;
slice = &ctx_pic->slice[i];
position = slice->dwSliceDataLocation;
size = slice->dwSliceBitsInBuffer / 8;
if (start_code_size + size > end - current) {
av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
break;
}
memcpy(dxva_data + start_code_size,
ctx_pic->bitstream + slice->dwSliceDataLocation, slice_size);
if (padding > 0)
memset(dxva_data + start_code_size + slice_size, 0, padding);
slice->dwSliceBitsInBuffer = 8 * data_size;
slice->dwSliceDataLocation = current - dxva_data;
if (i < ctx_pic->slice_count - 1)
slice->wNumberMBsInSlice =
slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
else
slice->wNumberMBsInSlice =
mb_count - slice[0].wNumberMBsInSlice;
/* write the appropriate frame, field or slice start code */
if (start_code_size) {
memcpy(current, start_code, start_code_size);
if (i == 0 && v->second_field)
current[3] = 0x0c;
else if (i > 0)
current[3] = 0x0b;
current += start_code_size;
slice->dwSliceBitsInBuffer += start_code_size * 8;
}
memcpy(current, &ctx_pic->bitstream[position], size);
current += size;
}
padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
if (slice && padding > 0) {
memset(current, 0, padding);
current += padding;
slice->dwSliceBitsInBuffer += padding * 8;
}
#if CONFIG_D3D11VA
if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
@ -246,16 +276,16 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
return -1;
#endif
if (result)
return result;
if (i < ctx_pic->slice_count)
return -1;
#if CONFIG_D3D11VA
if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
memset(dsc11, 0, sizeof(*dsc11));
dsc11->BufferType = type;
dsc11->DataSize = data_size;
dsc11->NumMBsInBuffer = s->mb_width * s->mb_height;
dsc11->DataSize = current - dxva_data;
dsc11->NumMBsInBuffer = mb_count;
type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
}
@ -265,17 +295,18 @@ static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
DXVA2_DecodeBufferDesc *dsc2 = bs;
memset(dsc2, 0, sizeof(*dsc2));
dsc2->CompressedBufferType = type;
dsc2->DataSize = data_size;
dsc2->NumMBsInBuffer = s->mb_width * s->mb_height;
dsc2->DataSize = current - dxva_data;
dsc2->NumMBsInBuffer = mb_count;
type = DXVA2_SliceControlBufferType;
}
#endif
assert((data_size & 127) == 0);
return ff_dxva2_commit_buffer(avctx, ctx, sc,
type,
slice, sizeof(*slice), s->mb_width * s->mb_height);
ctx_pic->slice,
ctx_pic->slice_count * sizeof(*ctx_pic->slice),
mb_count);
}
static int dxva2_vc1_start_frame(AVCodecContext *avctx,
@ -294,6 +325,7 @@ static int dxva2_vc1_start_frame(AVCodecContext *avctx,
fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
ctx_pic->slice_count = 0;
ctx_pic->bitstream_size = 0;
ctx_pic->bitstream = NULL;
return 0;
@ -306,9 +338,13 @@ static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
const VC1Context *v = avctx->priv_data;
const Picture *current_picture = v->s.current_picture_ptr;
struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
unsigned position;
if (ctx_pic->bitstream_size > 0)
if (ctx_pic->slice_count >= MAX_SLICES) {
avpriv_request_sample(avctx, "%d slices in dxva2",
ctx_pic->slice_count);
return -1;
}
if (avctx->codec_id == AV_CODEC_ID_VC1 &&
size >= 4 && IS_MARKER(AV_RB32(buffer))) {
@ -316,10 +352,12 @@ static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
size -= 4;
}
ctx_pic->bitstream_size = size;
ctx_pic->bitstream = buffer;
if (!ctx_pic->bitstream)
ctx_pic->bitstream = buffer;
ctx_pic->bitstream_size += size;
fill_slice(avctx, &ctx_pic->si, 0, size);
position = buffer - ctx_pic->bitstream;
fill_slice(avctx, &ctx_pic->slice[ctx_pic->slice_count++], position, size);
return 0;
}
@ -329,7 +367,7 @@ static int dxva2_vc1_end_frame(AVCodecContext *avctx)
struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
int ret;
if (ctx_pic->bitstream_size <= 0)
if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
return -1;
ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f,