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dxva2_mpeg2.c
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1 /*
2  * MPEG-2 HW acceleration.
3  *
4  * copyright (c) 2010 Laurent Aimar
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "libavutil/log.h"
24 #include "mpegutils.h"
25 #include "mpegvideo.h"
26 
27 // The headers above may include w32threads.h, which uses the original
28 // _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
29 // potentially newer version.
30 #include "dxva2_internal.h"
31 
32 #define MAX_SLICES 1024
33 struct dxva2_picture_context {
34  DXVA_PictureParameters pp;
35  DXVA_QmatrixData qm;
36  unsigned slice_count;
37  DXVA_SliceInfo slice[MAX_SLICES];
38 
39  const uint8_t *bitstream;
40  unsigned bitstream_size;
41 };
42 
45  const struct MpegEncContext *s,
46  DXVA_PictureParameters *pp)
47 {
48  const Picture *current_picture = s->current_picture_ptr;
49  int is_field = s->picture_structure != PICT_FRAME;
50 
51  memset(pp, 0, sizeof(*pp));
52  pp->wDecodedPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f);
53  pp->wDeblockedPictureIndex = 0;
54  if (s->pict_type != AV_PICTURE_TYPE_I)
55  pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f);
56  else
57  pp->wForwardRefPictureIndex = 0xffff;
58  if (s->pict_type == AV_PICTURE_TYPE_B)
59  pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f);
60  else
61  pp->wBackwardRefPictureIndex = 0xffff;
62  pp->wPicWidthInMBminus1 = s->mb_width - 1;
63  pp->wPicHeightInMBminus1 = (s->mb_height >> is_field) - 1;
64  pp->bMacroblockWidthMinus1 = 15;
65  pp->bMacroblockHeightMinus1 = 15;
66  pp->bBlockWidthMinus1 = 7;
67  pp->bBlockHeightMinus1 = 7;
68  pp->bBPPminus1 = 7;
69  pp->bPicStructure = s->picture_structure;
70  pp->bSecondField = is_field && !s->first_field;
71  pp->bPicIntra = s->pict_type == AV_PICTURE_TYPE_I;
72  pp->bPicBackwardPrediction = s->pict_type == AV_PICTURE_TYPE_B;
73  pp->bBidirectionalAveragingMode = 0;
74  pp->bMVprecisionAndChromaRelation= 0; /* FIXME */
75  pp->bChromaFormat = s->chroma_format;
76  pp->bPicScanFixed = 1;
77  pp->bPicScanMethod = s->alternate_scan ? 1 : 0;
78  pp->bPicReadbackRequests = 0;
79  pp->bRcontrol = 0;
80  pp->bPicSpatialResid8 = 0;
81  pp->bPicOverflowBlocks = 0;
82  pp->bPicExtrapolation = 0;
83  pp->bPicDeblocked = 0;
84  pp->bPicDeblockConfined = 0;
85  pp->bPic4MVallowed = 0;
86  pp->bPicOBMC = 0;
87  pp->bPicBinPB = 0;
88  pp->bMV_RPS = 0;
89  pp->bReservedBits = 0;
90  pp->wBitstreamFcodes = (s->mpeg_f_code[0][0] << 12) |
91  (s->mpeg_f_code[0][1] << 8) |
92  (s->mpeg_f_code[1][0] << 4) |
93  (s->mpeg_f_code[1][1] );
94  pp->wBitstreamPCEelements = (s->intra_dc_precision << 14) |
95  (s->picture_structure << 12) |
96  (s->top_field_first << 11) |
97  (s->frame_pred_frame_dct << 10) |
98  (s->concealment_motion_vectors << 9) |
99  (s->q_scale_type << 8) |
100  (s->intra_vlc_format << 7) |
101  (s->alternate_scan << 6) |
102  (s->repeat_first_field << 5) |
103  (s->chroma_420_type << 4) |
104  (s->progressive_frame << 3);
105  pp->bBitstreamConcealmentNeed = 0;
106  pp->bBitstreamConcealmentMethod = 0;
107 }
108 
111  const struct MpegEncContext *s,
112  DXVA_QmatrixData *qm)
113 {
114  int i;
115  for (i = 0; i < 4; i++)
116  qm->bNewQmatrix[i] = 1;
117  for (i = 0; i < 64; i++) {
119  qm->Qmatrix[0][i] = s->intra_matrix[n];
120  qm->Qmatrix[1][i] = s->inter_matrix[n];
121  qm->Qmatrix[2][i] = s->chroma_intra_matrix[n];
122  qm->Qmatrix[3][i] = s->chroma_inter_matrix[n];
123  }
124 }
125 
126 static void fill_slice(AVCodecContext *avctx,
127  const struct MpegEncContext *s,
128  DXVA_SliceInfo *slice,
129  unsigned position,
130  const uint8_t *buffer, unsigned size)
131 {
132  int is_field = s->picture_structure != PICT_FRAME;
133  GetBitContext gb;
134 
135  memset(slice, 0, sizeof(*slice));
136  slice->wHorizontalPosition = s->mb_x;
137  slice->wVerticalPosition = s->mb_y >> is_field;
138  slice->dwSliceBitsInBuffer = 8 * size;
139  slice->dwSliceDataLocation = position;
140  slice->bStartCodeBitOffset = 0;
141  slice->bReservedBits = 0;
142  /* XXX We store the index of the first MB and it will be fixed later */
143  slice->wNumberMBsInSlice = (s->mb_y >> is_field) * s->mb_width + s->mb_x;
144  slice->wBadSliceChopping = 0;
145 
146  init_get_bits(&gb, &buffer[4], 8 * (size - 4));
147 
148  slice->wQuantizerScaleCode = get_bits(&gb, 5);
150 
151  slice->wMBbitOffset = 4 * 8 + get_bits_count(&gb);
152 }
156 {
157  const struct MpegEncContext *s = avctx->priv_data;
159  struct dxva2_picture_context *ctx_pic =
161  const int is_field = s->picture_structure != PICT_FRAME;
162  const unsigned mb_count = s->mb_width * (s->mb_height >> is_field);
163  void *dxva_data_ptr;
164  uint8_t *dxva_data, *current, *end;
165  unsigned dxva_size;
166  unsigned i;
167  unsigned type;
168 
169 #if CONFIG_D3D11VA
170  if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
171  type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
172  if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
173  D3D11VA_CONTEXT(ctx)->decoder,
174  type,
175  &dxva_size, &dxva_data_ptr)))
176  return -1;
177  }
178 #endif
179 #if CONFIG_DXVA2
180  if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
181  type = DXVA2_BitStreamDateBufferType;
182  if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
183  type,
184  &dxva_data_ptr, &dxva_size)))
185  return -1;
186  }
187 #endif
188 
189  dxva_data = dxva_data_ptr;
190  current = dxva_data;
191  end = dxva_data + dxva_size;
192 
193  for (i = 0; i < ctx_pic->slice_count; i++) {
194  DXVA_SliceInfo *slice = &ctx_pic->slice[i];
195  unsigned position = slice->dwSliceDataLocation;
196  unsigned size = slice->dwSliceBitsInBuffer / 8;
197  if (size > end - current) {
198  av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
199  break;
200  }
201  slice->dwSliceDataLocation = current - dxva_data;
202 
203  if (i < ctx_pic->slice_count - 1)
204  slice->wNumberMBsInSlice =
205  slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
206  else
207  slice->wNumberMBsInSlice =
208  mb_count - slice[0].wNumberMBsInSlice;
209 
210  memcpy(current, &ctx_pic->bitstream[position], size);
211  current += size;
212  }
213 #if CONFIG_D3D11VA
214  if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
215  if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
216  return -1;
217 #endif
218 #if CONFIG_DXVA2
219  if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
220  if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
221  return -1;
222 #endif
223  if (i < ctx_pic->slice_count)
224  return -1;
225 
226 #if CONFIG_D3D11VA
227  if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
228  D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
229  memset(dsc11, 0, sizeof(*dsc11));
230  dsc11->BufferType = type;
231  dsc11->DataSize = current - dxva_data;
232  dsc11->NumMBsInBuffer = mb_count;
233 
234  type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
235  }
236 #endif
237 #if CONFIG_DXVA2
238  if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
239  DXVA2_DecodeBufferDesc *dsc2 = bs;
240  memset(dsc2, 0, sizeof(*dsc2));
241  dsc2->CompressedBufferType = type;
242  dsc2->DataSize = current - dxva_data;
243  dsc2->NumMBsInBuffer = mb_count;
244 
245  type = DXVA2_SliceControlBufferType;
246  }
247 #endif
248 
249  return ff_dxva2_commit_buffer(avctx, ctx, sc,
250  type,
251  ctx_pic->slice,
252  ctx_pic->slice_count * sizeof(*ctx_pic->slice),
253  mb_count);
254 }
255 
257  av_unused const uint8_t *buffer,
258  av_unused uint32_t size)
259 {
260  const struct MpegEncContext *s = avctx->priv_data;
262  struct dxva2_picture_context *ctx_pic =
264 
265  if (DXVA_CONTEXT_DECODER(avctx, ctx) == NULL ||
266  DXVA_CONTEXT_CFG(avctx, ctx) == NULL ||
267  DXVA_CONTEXT_COUNT(avctx, ctx) <= 0)
268  return -1;
269  assert(ctx_pic);
270 
271  fill_picture_parameters(avctx, ctx, s, &ctx_pic->pp);
272  fill_quantization_matrices(avctx, ctx, s, &ctx_pic->qm);
273 
274  ctx_pic->slice_count = 0;
275  ctx_pic->bitstream_size = 0;
276  ctx_pic->bitstream = NULL;
277  return 0;
278 }
279 
281  const uint8_t *buffer, uint32_t size)
282 {
283  const struct MpegEncContext *s = avctx->priv_data;
284  struct dxva2_picture_context *ctx_pic =
286  unsigned position;
287 
288  if (ctx_pic->slice_count >= MAX_SLICES) {
289  avpriv_request_sample(avctx, "%d slices in dxva2",
290  ctx_pic->slice_count);
291  return -1;
292  }
293  if (!ctx_pic->bitstream)
294  ctx_pic->bitstream = buffer;
295  ctx_pic->bitstream_size += size;
296 
297  position = buffer - ctx_pic->bitstream;
298  fill_slice(avctx, s, &ctx_pic->slice[ctx_pic->slice_count++], position,
299  buffer, size);
300  return 0;
301 }
302 
304 {
305  struct MpegEncContext *s = avctx->priv_data;
306  struct dxva2_picture_context *ctx_pic =
308  int ret;
309 
310  if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
311  return -1;
313  &ctx_pic->pp, sizeof(ctx_pic->pp),
314  &ctx_pic->qm, sizeof(ctx_pic->qm),
316  if (!ret)
317  ff_mpeg_draw_horiz_band(s, 0, avctx->height);
318  return ret;
319 }
320 
321 #if CONFIG_MPEG2_DXVA2_HWACCEL
322 AVHWAccel ff_mpeg2_dxva2_hwaccel = {
323  .name = "mpeg2_dxva2",
324  .type = AVMEDIA_TYPE_VIDEO,
326  .pix_fmt = AV_PIX_FMT_DXVA2_VLD,
327  .start_frame = dxva2_mpeg2_start_frame,
328  .decode_slice = dxva2_mpeg2_decode_slice,
329  .end_frame = dxva2_mpeg2_end_frame,
330  .frame_priv_data_size = sizeof(struct dxva2_picture_context),
331 };
332 #endif
333 
334 #if CONFIG_MPEG2_D3D11VA_HWACCEL
335 AVHWAccel ff_mpeg2_d3d11va_hwaccel = {
336  .name = "mpeg2_d3d11va",
337  .type = AVMEDIA_TYPE_VIDEO,
339  .pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
340  .start_frame = dxva2_mpeg2_start_frame,
341  .decode_slice = dxva2_mpeg2_decode_slice,
342  .end_frame = dxva2_mpeg2_end_frame,
343  .frame_priv_data_size = sizeof(struct dxva2_picture_context),
344 };
345 #endif
IDCTDSPContext idsp
Definition: mpegvideo.h:227
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
Definition: get_bits.h:247
uint16_t chroma_intra_matrix[64]
Definition: mpegvideo.h:301
uint16_t chroma_inter_matrix[64]
Definition: mpegvideo.h:303
DXVA_QmatrixData qm
Definition: dxva2_mpeg2.c:35
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1887
static int dxva2_mpeg2_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
Definition: dxva2_mpeg2.c:256
mpegvideo header.
DXVA_PictureParameters pp
Definition: dxva2_mpeg2.c:34
static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx, DECODER_BUFFER_DESC *bs, DECODER_BUFFER_DESC *sc)
Definition: dxva2_mpeg2.c:153
DXVA_SliceInfo slice[MAX_SLICES]
Definition: dxva2_mpeg2.c:37
void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h)
Definition: mpegvideo.c:2732
void void avpriv_request_sample(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
uint8_t
void * hwaccel_context
Hardware accelerator context.
Definition: avcodec.h:2991
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int ff_dxva2_common_end_frame(AVCodecContext *avctx, AVFrame *frame, const void *pp, unsigned pp_size, const void *qm, unsigned qm_size, int(*commit_bs_si)(AVCodecContext *, DECODER_BUFFER_DESC *bs, DECODER_BUFFER_DESC *slice))
Definition: dxva2.c:125
int intra_dc_precision
Definition: mpegvideo.h:460
int repeat_first_field
Definition: mpegvideo.h:469
static int get_bits_count(const GetBitContext *s)
Definition: get_bits.h:199
static int dxva2_mpeg2_end_frame(AVCodecContext *avctx)
Definition: dxva2_mpeg2.c:303
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:126
ptrdiff_t size
Definition: opengl_enc.c:101
#define av_log(a,...)
static void fill_picture_parameters(AVCodecContext *avctx, AVDXVAContext *ctx, const struct MpegEncContext *s, DXVA_PictureParameters *pp)
Definition: dxva2_mpeg2.c:43
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
static int dxva2_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
Definition: dxva2_mpeg2.c:280
int intra_vlc_format
Definition: mpegvideo.h:466
int progressive_frame
Definition: mpegvideo.h:478
int top_field_first
Definition: mpegvideo.h:462
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3699
static const chunk_decoder decoder[8]
Definition: dfa.c:327
Picture * current_picture_ptr
pointer to the current picture
Definition: mpegvideo.h:181
Picture.
Definition: mpegpicture.h:45
int alternate_scan
Definition: mpegvideo.h:467
void * hwaccel_picture_private
Hardware accelerator private data.
Definition: mpegpicture.h:77
AVFormatContext * ctx
Definition: movenc.c:48
int n
Definition: avisynth_c.h:684
uint8_t idct_permutation[64]
IDCT input permutation.
Definition: idctdsp.h:94
int mpeg_f_code[2][2]
Definition: mpegvideo.h:454
static void fill_quantization_matrices(AVCodecContext *avctx, AVDXVAContext *ctx, const struct MpegEncContext *s, DXVA_QmatrixData *qm)
Definition: dxva2_mpeg2.c:109
unsigned bitstream_size
Definition: dxva2_h264.c:42
static void fill_slice(AVCodecContext *avctx, const struct MpegEncContext *s, DXVA_SliceInfo *slice, unsigned position, const uint8_t *buffer, unsigned size)
Definition: dxva2_mpeg2.c:126
preferred ID for MPEG-1/2 video decoding
Definition: avcodec.h:196
int first_field
is 1 for the first field of a field picture 0 otherwise
Definition: mpegvideo.h:481
int frame_pred_frame_dct
Definition: mpegvideo.h:461
uint16_t inter_matrix[64]
Definition: mpegvideo.h:302
int concealment_motion_vectors
Definition: mpegvideo.h:463
unsigned ff_dxva2_get_surface_index(const AVCodecContext *avctx, const AVDXVAContext *ctx, const AVFrame *frame)
Definition: dxva2.c:37
main external API structure.
Definition: avcodec.h:1659
int ff_dxva2_commit_buffer(AVCodecContext *avctx, AVDXVAContext *ctx, DECODER_BUFFER_DESC *dsc, unsigned type, const void *data, unsigned size, unsigned mb_count)
Definition: dxva2.c:52
int chroma_420_type
Definition: mpegvideo.h:470
GLint GLenum type
Definition: opengl_enc.c:105
struct AVFrame * f
Definition: mpegpicture.h:46
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
Definition: get_bits.h:406
const uint8_t ff_zigzag_direct[64]
Definition: mathtables.c:98
void DECODER_BUFFER_DESC
HW decoding through DXVA2, Picture.data[3] contains a LPDIRECT3DSURFACE9 pointer. ...
Definition: pixfmt.h:148
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:209
#define FAILED(hr)
Definition: windows2linux.h:48
MpegEncContext.
Definition: mpegvideo.h:78
const uint8_t * bitstream
Definition: dxva2_h264.c:41
#define MAX_SLICES
Definition: dxva2_mpeg2.c:32
Picture last_picture
copy of the previous picture structure.
Definition: mpegvideo.h:159
Bi-dir predicted.
Definition: avutil.h:270
void * priv_data
Definition: avcodec.h:1701
#define PICT_FRAME
Definition: mpegutils.h:39
int picture_structure
Definition: mpegvideo.h:457
Picture next_picture
copy of the next picture structure.
Definition: mpegvideo.h:165
uint16_t intra_matrix[64]
matrix transmitted in the bitstream
Definition: mpegvideo.h:300
static int skip_1stop_8data_bits(GetBitContext *gb)
Definition: get_bits.h:573
HW decoding through Direct3D11, Picture.data[3] contains a ID3D11VideoDecoderOutputView pointer...
Definition: pixfmt.h:242
for(j=16;j >0;--j)
GLuint buffer
Definition: opengl_enc.c:102
#define av_unused
Definition: attributes.h:126
DXVA_Qmatrix_H264 qm
Definition: dxva2_h264.c:37