FFmpeg
hwcontext_cuda.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "buffer.h"
20 #include "common.h"
21 #include "hwcontext.h"
22 #include "hwcontext_internal.h"
24 #if CONFIG_VULKAN
25 #include "hwcontext_vulkan.h"
26 #endif
27 #include "cuda_check.h"
28 #include "mem.h"
29 #include "pixdesc.h"
30 #include "pixfmt.h"
31 #include "imgutils.h"
32 
33 typedef struct CUDAFramesContext {
37 
38 static const enum AVPixelFormat supported_formats[] = {
48 #if CONFIG_VULKAN
50 #endif
51 };
52 
53 #define CHECK_CU(x) FF_CUDA_CHECK_DL(device_ctx, cu, x)
54 
56  const void *hwconfig,
57  AVHWFramesConstraints *constraints)
58 {
59  int i;
60 
62  sizeof(*constraints->valid_sw_formats));
63  if (!constraints->valid_sw_formats)
64  return AVERROR(ENOMEM);
65 
66  for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
67  constraints->valid_sw_formats[i] = supported_formats[i];
69 
70  constraints->valid_hw_formats = av_malloc_array(2, sizeof(*constraints->valid_hw_formats));
71  if (!constraints->valid_hw_formats)
72  return AVERROR(ENOMEM);
73 
74  constraints->valid_hw_formats[0] = AV_PIX_FMT_CUDA;
75  constraints->valid_hw_formats[1] = AV_PIX_FMT_NONE;
76 
77  return 0;
78 }
79 
80 static void cuda_buffer_free(void *opaque, uint8_t *data)
81 {
82  AVHWFramesContext *ctx = opaque;
83  AVHWDeviceContext *device_ctx = ctx->device_ctx;
84  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
85  CudaFunctions *cu = hwctx->internal->cuda_dl;
86 
87  CUcontext dummy;
88 
89  CHECK_CU(cu->cuCtxPushCurrent(hwctx->cuda_ctx));
90 
91  CHECK_CU(cu->cuMemFree((CUdeviceptr)data));
92 
93  CHECK_CU(cu->cuCtxPopCurrent(&dummy));
94 }
95 
96 static AVBufferRef *cuda_pool_alloc(void *opaque, size_t size)
97 {
98  AVHWFramesContext *ctx = opaque;
99  AVHWDeviceContext *device_ctx = ctx->device_ctx;
100  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
101  CudaFunctions *cu = hwctx->internal->cuda_dl;
102 
103  AVBufferRef *ret = NULL;
104  CUcontext dummy = NULL;
105  CUdeviceptr data;
106  int err;
107 
108  err = CHECK_CU(cu->cuCtxPushCurrent(hwctx->cuda_ctx));
109  if (err < 0)
110  return NULL;
111 
112  err = CHECK_CU(cu->cuMemAlloc(&data, size));
113  if (err < 0)
114  goto fail;
115 
116  ret = av_buffer_create((uint8_t*)data, size, cuda_buffer_free, ctx, 0);
117  if (!ret) {
118  CHECK_CU(cu->cuMemFree(data));
119  goto fail;
120  }
121 
122 fail:
123  CHECK_CU(cu->cuCtxPopCurrent(&dummy));
124  return ret;
125 }
126 
128 {
129  AVHWDeviceContext *device_ctx = ctx->device_ctx;
130  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
131  CUDAFramesContext *priv = ctx->internal->priv;
132  CudaFunctions *cu = hwctx->internal->cuda_dl;
133  int err, i;
134 
135  for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) {
136  if (ctx->sw_format == supported_formats[i])
137  break;
138  }
140  av_log(ctx, AV_LOG_ERROR, "Pixel format '%s' is not supported\n",
141  av_get_pix_fmt_name(ctx->sw_format));
142  return AVERROR(ENOSYS);
143  }
144 
145  err = CHECK_CU(cu->cuDeviceGetAttribute(&priv->tex_alignment,
146  14 /* CU_DEVICE_ATTRIBUTE_TEXTURE_ALIGNMENT */,
147  hwctx->internal->cuda_device));
148  if (err < 0)
149  return err;
150 
151  av_log(ctx, AV_LOG_DEBUG, "CUDA texture alignment: %d\n", priv->tex_alignment);
152 
153  // YUV420P is a special case.
154  // Since nvenc expects the U/V planes to have half the linesize of the Y plane
155  // alignment has to be doubled to ensure the U/V planes still end up aligned.
156  if (ctx->sw_format == AV_PIX_FMT_YUV420P)
157  priv->tex_alignment *= 2;
158 
159  av_pix_fmt_get_chroma_sub_sample(ctx->sw_format, &priv->shift_width, &priv->shift_height);
160 
161  if (!ctx->pool) {
162  int size = av_image_get_buffer_size(ctx->sw_format, ctx->width, ctx->height, priv->tex_alignment);
163  if (size < 0)
164  return size;
165 
167  if (!ctx->internal->pool_internal)
168  return AVERROR(ENOMEM);
169  }
170 
171  return 0;
172 }
173 
175 {
176  CUDAFramesContext *priv = ctx->internal->priv;
177  int res;
178 
179  frame->buf[0] = av_buffer_pool_get(ctx->pool);
180  if (!frame->buf[0])
181  return AVERROR(ENOMEM);
182 
183  res = av_image_fill_arrays(frame->data, frame->linesize, frame->buf[0]->data,
184  ctx->sw_format, ctx->width, ctx->height, priv->tex_alignment);
185  if (res < 0)
186  return res;
187 
188  // YUV420P is a special case.
189  // Nvenc expects the U/V planes in swapped order from how ffmpeg expects them, also chroma is half-aligned
190  if (ctx->sw_format == AV_PIX_FMT_YUV420P) {
191  frame->linesize[1] = frame->linesize[2] = frame->linesize[0] / 2;
192  frame->data[2] = frame->data[1];
193  frame->data[1] = frame->data[2] + frame->linesize[2] * (ctx->height / 2);
194  }
195 
196  frame->format = AV_PIX_FMT_CUDA;
197  frame->width = ctx->width;
198  frame->height = ctx->height;
199 
200  return 0;
201 }
202 
205  enum AVPixelFormat **formats)
206 {
207  enum AVPixelFormat *fmts;
208 
209  fmts = av_malloc_array(2, sizeof(*fmts));
210  if (!fmts)
211  return AVERROR(ENOMEM);
212 
213  fmts[0] = ctx->sw_format;
214  fmts[1] = AV_PIX_FMT_NONE;
215 
216  *formats = fmts;
217 
218  return 0;
219 }
220 
222  const AVFrame *src)
223 {
224  CUDAFramesContext *priv = ctx->internal->priv;
225  AVHWDeviceContext *device_ctx = ctx->device_ctx;
226  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
227  CudaFunctions *cu = hwctx->internal->cuda_dl;
228 
229  CUcontext dummy;
230  int i, ret;
231 
232  if ((src->hw_frames_ctx && ((AVHWFramesContext*)src->hw_frames_ctx->data)->format != AV_PIX_FMT_CUDA) ||
233  (dst->hw_frames_ctx && ((AVHWFramesContext*)dst->hw_frames_ctx->data)->format != AV_PIX_FMT_CUDA))
234  return AVERROR(ENOSYS);
235 
236  ret = CHECK_CU(cu->cuCtxPushCurrent(hwctx->cuda_ctx));
237  if (ret < 0)
238  return ret;
239 
240  for (i = 0; i < FF_ARRAY_ELEMS(src->data) && src->data[i]; i++) {
241  CUDA_MEMCPY2D cpy = {
242  .srcPitch = src->linesize[i],
243  .dstPitch = dst->linesize[i],
244  .WidthInBytes = FFMIN(src->linesize[i], dst->linesize[i]),
245  .Height = src->height >> ((i == 0 || i == 3) ? 0 : priv->shift_height),
246  };
247 
248  if (src->hw_frames_ctx) {
249  cpy.srcMemoryType = CU_MEMORYTYPE_DEVICE;
250  cpy.srcDevice = (CUdeviceptr)src->data[i];
251  } else {
252  cpy.srcMemoryType = CU_MEMORYTYPE_HOST;
253  cpy.srcHost = src->data[i];
254  }
255 
256  if (dst->hw_frames_ctx) {
257  cpy.dstMemoryType = CU_MEMORYTYPE_DEVICE;
258  cpy.dstDevice = (CUdeviceptr)dst->data[i];
259  } else {
260  cpy.dstMemoryType = CU_MEMORYTYPE_HOST;
261  cpy.dstHost = dst->data[i];
262  }
263 
264  ret = CHECK_CU(cu->cuMemcpy2DAsync(&cpy, hwctx->stream));
265  if (ret < 0)
266  goto exit;
267  }
268 
269  if (!dst->hw_frames_ctx) {
270  ret = CHECK_CU(cu->cuStreamSynchronize(hwctx->stream));
271  if (ret < 0)
272  goto exit;
273  }
274 
275 exit:
276  CHECK_CU(cu->cuCtxPopCurrent(&dummy));
277 
278  return 0;
279 }
280 
281 static void cuda_device_uninit(AVHWDeviceContext *device_ctx)
282 {
283  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
284 
285  if (hwctx->internal) {
286  CudaFunctions *cu = hwctx->internal->cuda_dl;
287 
288  if (hwctx->internal->is_allocated && hwctx->cuda_ctx) {
290  CHECK_CU(cu->cuDevicePrimaryCtxRelease(hwctx->internal->cuda_device));
291  else
292  CHECK_CU(cu->cuCtxDestroy(hwctx->cuda_ctx));
293 
294  hwctx->cuda_ctx = NULL;
295  }
296 
297  cuda_free_functions(&hwctx->internal->cuda_dl);
298  }
299 
300  av_freep(&hwctx->internal);
301 }
302 
304 {
305  AVCUDADeviceContext *hwctx = ctx->hwctx;
306  int ret;
307 
308  if (!hwctx->internal) {
309  hwctx->internal = av_mallocz(sizeof(*hwctx->internal));
310  if (!hwctx->internal)
311  return AVERROR(ENOMEM);
312  }
313 
314  if (!hwctx->internal->cuda_dl) {
315  ret = cuda_load_functions(&hwctx->internal->cuda_dl, ctx);
316  if (ret < 0) {
317  av_log(ctx, AV_LOG_ERROR, "Could not dynamically load CUDA\n");
318  goto error;
319  }
320  }
321 
322  return 0;
323 
324 error:
326  return ret;
327 }
328 
329 static int cuda_context_init(AVHWDeviceContext *device_ctx, int flags) {
330  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
331  CudaFunctions *cu;
332  CUcontext dummy;
333  int ret, dev_active = 0;
334  unsigned int dev_flags = 0;
335 
336  const unsigned int desired_flags = CU_CTX_SCHED_BLOCKING_SYNC;
337 
338  cu = hwctx->internal->cuda_dl;
339 
340  hwctx->internal->flags = flags;
341 
343  ret = CHECK_CU(cu->cuDevicePrimaryCtxGetState(hwctx->internal->cuda_device,
344  &dev_flags, &dev_active));
345  if (ret < 0)
346  return ret;
347 
348  if (dev_active && dev_flags != desired_flags) {
349  av_log(device_ctx, AV_LOG_ERROR, "Primary context already active with incompatible flags.\n");
350  return AVERROR(ENOTSUP);
351  } else if (dev_flags != desired_flags) {
352  ret = CHECK_CU(cu->cuDevicePrimaryCtxSetFlags(hwctx->internal->cuda_device,
353  desired_flags));
354  if (ret < 0)
355  return ret;
356  }
357 
358  ret = CHECK_CU(cu->cuDevicePrimaryCtxRetain(&hwctx->cuda_ctx,
359  hwctx->internal->cuda_device));
360  if (ret < 0)
361  return ret;
362  } else {
363  ret = CHECK_CU(cu->cuCtxCreate(&hwctx->cuda_ctx, desired_flags,
364  hwctx->internal->cuda_device));
365  if (ret < 0)
366  return ret;
367 
368  CHECK_CU(cu->cuCtxPopCurrent(&dummy));
369  }
370 
371  hwctx->internal->is_allocated = 1;
372 
373  // Setting stream to NULL will make functions automatically use the default CUstream
374  hwctx->stream = NULL;
375 
376  return 0;
377 }
378 
379 static int cuda_device_create(AVHWDeviceContext *device_ctx,
380  const char *device,
381  AVDictionary *opts, int flags)
382 {
383  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
384  CudaFunctions *cu;
385  int ret, device_idx = 0;
386 
387  if (device)
388  device_idx = strtol(device, NULL, 0);
389 
390  if (cuda_device_init(device_ctx) < 0)
391  goto error;
392 
393  cu = hwctx->internal->cuda_dl;
394 
395  ret = CHECK_CU(cu->cuInit(0));
396  if (ret < 0)
397  goto error;
398 
399  ret = CHECK_CU(cu->cuDeviceGet(&hwctx->internal->cuda_device, device_idx));
400  if (ret < 0)
401  goto error;
402 
403  ret = cuda_context_init(device_ctx, flags);
404  if (ret < 0)
405  goto error;
406 
407  return 0;
408 
409 error:
410  cuda_device_uninit(device_ctx);
411  return AVERROR_UNKNOWN;
412 }
413 
414 static int cuda_device_derive(AVHWDeviceContext *device_ctx,
416  int flags) {
417  AVCUDADeviceContext *hwctx = device_ctx->hwctx;
418  CudaFunctions *cu;
419  const char *src_uuid = NULL;
420  int ret, i, device_count;
421 
422 #if CONFIG_VULKAN
423  VkPhysicalDeviceIDProperties vk_idp = {
424  .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_ID_PROPERTIES,
425  };
426 #endif
427 
428  switch (src_ctx->type) {
429 #if CONFIG_VULKAN
430 #define TYPE PFN_vkGetPhysicalDeviceProperties2
432  AVVulkanDeviceContext *vkctx = src_ctx->hwctx;
433  TYPE prop_fn = (TYPE)vkctx->get_proc_addr(vkctx->inst, "vkGetPhysicalDeviceProperties2");
434  VkPhysicalDeviceProperties2 vk_dev_props = {
435  .sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2,
436  .pNext = &vk_idp,
437  };
438  prop_fn(vkctx->phys_dev, &vk_dev_props);
439  src_uuid = vk_idp.deviceUUID;
440  break;
441  }
442 #undef TYPE
443 #endif
444  default:
445  return AVERROR(ENOSYS);
446  }
447 
448  if (!src_uuid) {
449  av_log(device_ctx, AV_LOG_ERROR,
450  "Failed to get UUID of source device.\n");
451  goto error;
452  }
453 
454  if (cuda_device_init(device_ctx) < 0)
455  goto error;
456 
457  cu = hwctx->internal->cuda_dl;
458 
459  ret = CHECK_CU(cu->cuInit(0));
460  if (ret < 0)
461  goto error;
462 
463  ret = CHECK_CU(cu->cuDeviceGetCount(&device_count));
464  if (ret < 0)
465  goto error;
466 
467  hwctx->internal->cuda_device = -1;
468  for (i = 0; i < device_count; i++) {
469  CUdevice dev;
470  CUuuid uuid;
471 
472  ret = CHECK_CU(cu->cuDeviceGet(&dev, i));
473  if (ret < 0)
474  goto error;
475 
476  ret = CHECK_CU(cu->cuDeviceGetUuid(&uuid, dev));
477  if (ret < 0)
478  goto error;
479 
480  if (memcmp(src_uuid, uuid.bytes, sizeof (uuid.bytes)) == 0) {
481  hwctx->internal->cuda_device = dev;
482  break;
483  }
484  }
485 
486  if (hwctx->internal->cuda_device == -1) {
487  av_log(device_ctx, AV_LOG_ERROR, "Could not derive CUDA device.\n");
488  goto error;
489  }
490 
491  ret = cuda_context_init(device_ctx, flags);
492  if (ret < 0)
493  goto error;
494 
495  return 0;
496 
497 error:
498  cuda_device_uninit(device_ctx);
499  return AVERROR_UNKNOWN;
500 }
501 
504  .name = "CUDA",
505 
506  .device_hwctx_size = sizeof(AVCUDADeviceContext),
507  .frames_priv_size = sizeof(CUDAFramesContext),
508 
509  .device_create = cuda_device_create,
510  .device_derive = cuda_device_derive,
511  .device_init = cuda_device_init,
512  .device_uninit = cuda_device_uninit,
513  .frames_get_constraints = cuda_frames_get_constraints,
514  .frames_init = cuda_frames_init,
515  .frames_get_buffer = cuda_get_buffer,
516  .transfer_get_formats = cuda_transfer_get_formats,
517  .transfer_data_to = cuda_transfer_data,
518  .transfer_data_from = cuda_transfer_data,
519 
520  .pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE },
521 };
error
static void error(const char *err)
Definition: target_bsf_fuzzer.c:31
formats
formats
Definition: signature.h:48
AVHWDeviceContext::hwctx
void * hwctx
The format-specific data, allocated and freed by libavutil along with this context.
Definition: hwcontext.h:92
AVVulkanDeviceContext::phys_dev
VkPhysicalDevice phys_dev
Physical device.
Definition: hwcontext_vulkan.h:60
AV_PIX_FMT_CUDA
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
Definition: pixfmt.h:225
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
cuda_context_init
static int cuda_context_init(AVHWDeviceContext *device_ctx, int flags)
Definition: hwcontext_cuda.c:329
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
cuda_device_derive
static int cuda_device_derive(AVHWDeviceContext *device_ctx, AVHWDeviceContext *src_ctx, AVDictionary *opts, int flags)
Definition: hwcontext_cuda.c:414
hwcontext_cuda_internal.h
cuda_transfer_get_formats
static int cuda_transfer_get_formats(AVHWFramesContext *ctx, enum AVHWFrameTransferDirection dir, enum AVPixelFormat **formats)
Definition: hwcontext_cuda.c:203
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
CUDAFramesContext
Definition: hwcontext_cuda.c:33
CHECK_CU
#define CHECK_CU(x)
Definition: hwcontext_cuda.c:53
AVCUDADeviceContextInternal::is_allocated
int is_allocated
Definition: hwcontext_cuda_internal.h:33
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
AVVulkanDeviceContext::get_proc_addr
PFN_vkGetInstanceProcAddr get_proc_addr
Pointer to the instance-provided vkGetInstanceProcAddr loading function.
Definition: hwcontext_vulkan.h:50
data
const char data[16]
Definition: mxf.c:143
AVVulkanDeviceContext::inst
VkInstance inst
Vulkan instance.
Definition: hwcontext_vulkan.h:55
AVDictionary
Definition: dict.c:30
AVHWFramesConstraints::valid_hw_formats
enum AVPixelFormat * valid_hw_formats
A list of possible values for format in the hw_frames_ctx, terminated by AV_PIX_FMT_NONE.
Definition: hwcontext.h:458
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:73
AVFormatContext::internal
AVFormatInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1565
AV_PIX_FMT_VULKAN
@ AV_PIX_FMT_VULKAN
Vulkan hardware images.
Definition: pixfmt.h:346
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
AV_HWDEVICE_TYPE_VULKAN
@ AV_HWDEVICE_TYPE_VULKAN
Definition: hwcontext.h:39
AVHWFramesConstraints
This struct describes the constraints on hardware frames attached to a given device with a hardware-s...
Definition: hwcontext.h:453
AV_HWDEVICE_TYPE_CUDA
@ AV_HWDEVICE_TYPE_CUDA
Definition: hwcontext.h:30
fail
#define fail()
Definition: checkasm.h:136
av_buffer_pool_init2
AVBufferPool * av_buffer_pool_init2(size_t size, void *opaque, AVBufferRef *(*alloc)(void *opaque, size_t size), void(*pool_free)(void *opaque))
Allocate and initialize a buffer pool with a more complex allocator.
Definition: buffer.c:245
AVCUDADeviceContextInternal::cuda_device
CUdevice cuda_device
Definition: hwcontext_cuda_internal.h:34
av_pix_fmt_get_chroma_sub_sample
int av_pix_fmt_get_chroma_sub_sample(enum AVPixelFormat pix_fmt, int *h_shift, int *v_shift)
Utility function to access log2_chroma_w log2_chroma_h from the pixel format AVPixFmtDescriptor.
Definition: pixdesc.c:2568
AVCUDADeviceContext::cuda_ctx
CUcontext cuda_ctx
Definition: hwcontext_cuda.h:43
AVHWDeviceContext
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
HWContextType::type
enum AVHWDeviceType type
Definition: hwcontext_internal.h:30
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
AVHWFramesConstraints::valid_sw_formats
enum AVPixelFormat * valid_sw_formats
A list of possible values for sw_format in the hw_frames_ctx, terminated by AV_PIX_FMT_NONE.
Definition: hwcontext.h:465
av_buffer_pool_get
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:373
AV_PIX_FMT_YUVA420P
@ AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:402
AV_PIX_FMT_0BGR32
#define AV_PIX_FMT_0BGR32
Definition: pixfmt.h:367
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ctx
AVFormatContext * ctx
Definition: movenc.c:48
cuda_device_init
static int cuda_device_init(AVHWDeviceContext *ctx)
Definition: hwcontext_cuda.c:303
AV_PIX_FMT_YUV420P
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
AVVulkanDeviceContext
Main Vulkan context, allocated as AVHWDeviceContext.hwctx.
Definition: hwcontext_vulkan.h:39
opts
AVDictionary * opts
Definition: movenc.c:50
NULL
#define NULL
Definition: coverity.c:32
AVCUDADeviceContextInternal::flags
int flags
Definition: hwcontext_cuda_internal.h:35
src
#define src
Definition: vp8dsp.c:255
TYPE
#define TYPE
Definition: ffv1.h:194
hwcontext_vulkan.h
CUDAFramesContext::shift_width
int shift_width
Definition: hwcontext_cuda.c:34
cuda_transfer_data
static int cuda_transfer_data(AVHWFramesContext *ctx, AVFrame *dst, const AVFrame *src)
Definition: hwcontext_cuda.c:221
av_buffer_create
AVBufferRef * av_buffer_create(uint8_t *data, size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:29
AVCUDADeviceContext::stream
CUstream stream
Definition: hwcontext_cuda.h:44
AVCUDADeviceContext::internal
AVCUDADeviceContextInternal * internal
Definition: hwcontext_cuda.h:45
CUDAFramesContext::tex_alignment
int tex_alignment
Definition: hwcontext_cuda.c:35
av_image_fill_arrays
int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4], const uint8_t *src, enum AVPixelFormat pix_fmt, int width, int height, int align)
Setup the data pointers and linesizes based on the specified image parameters and the provided array.
Definition: imgutils.c:446
CUDAFramesContext::shift_height
int shift_height
Definition: hwcontext_cuda.c:34
size
int size
Definition: twinvq_data.h:10344
ff_hwcontext_type_cuda
const HWContextType ff_hwcontext_type_cuda
Definition: hwcontext_cuda.c:502
buffer.h
av_image_get_buffer_size
int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align)
Return the size in bytes of the amount of data required to store an image with the given parameters.
Definition: imgutils.c:466
AVCUDADeviceContextInternal::cuda_dl
CudaFunctions * cuda_dl
Definition: hwcontext_cuda_internal.h:32
i
int i
Definition: input.c:406
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
common.h
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:243
cuda_device_uninit
static void cuda_device_uninit(AVHWDeviceContext *device_ctx)
Definition: hwcontext_cuda.c:281
AV_PIX_FMT_P016
#define AV_PIX_FMT_P016
Definition: pixfmt.h:439
AVHWFrameTransferDirection
AVHWFrameTransferDirection
Definition: hwcontext.h:415
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
AVCUDADeviceContext
This struct is allocated as AVHWDeviceContext.hwctx.
Definition: hwcontext_cuda.h:42
ret
ret
Definition: filter_design.txt:187
AVHWDeviceContext::type
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:79
pixfmt.h
AV_PIX_FMT_NV12
@ AV_PIX_FMT_NV12
planar YUV 4:2:0, 12bpp, 1 plane for Y and 1 plane for the UV components, which are interleaved (firs...
Definition: pixfmt.h:89
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AV_PIX_FMT_0RGB32
#define AV_PIX_FMT_0RGB32
Definition: pixfmt.h:366
cuda_check.h
cuda_buffer_free
static void cuda_buffer_free(void *opaque, uint8_t *data)
Definition: hwcontext_cuda.c:80
AVFrame::hw_frames_ctx
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame.
Definition: frame.h:607
AV_CUDA_USE_PRIMARY_CONTEXT
#define AV_CUDA_USE_PRIMARY_CONTEXT
Use primary device context instead of creating a new one.
Definition: hwcontext_cuda.h:63
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
dummy
int dummy
Definition: motion.c:65
cuda_device_create
static int cuda_device_create(AVHWDeviceContext *device_ctx, const char *device, AVDictionary *opts, int flags)
Definition: hwcontext_cuda.c:379
supported_formats
static enum AVPixelFormat supported_formats[]
Definition: hwcontext_cuda.c:38
AV_PIX_FMT_YUV444P
@ AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
cuda_get_buffer
static int cuda_get_buffer(AVHWFramesContext *ctx, AVFrame *frame)
Definition: hwcontext_cuda.c:174
AV_PIX_FMT_P010
#define AV_PIX_FMT_P010
Definition: pixfmt.h:438
mem.h
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:82
cuda_pool_alloc
static AVBufferRef * cuda_pool_alloc(void *opaque, size_t size)
Definition: hwcontext_cuda.c:96
hwcontext_internal.h
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
hwcontext.h
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
HWContextType
Definition: hwcontext_internal.h:29
cuda_frames_get_constraints
static int cuda_frames_get_constraints(AVHWDeviceContext *ctx, const void *hwconfig, AVHWFramesConstraints *constraints)
Definition: hwcontext_cuda.c:55
cuda_frames_init
static int cuda_frames_init(AVHWFramesContext *ctx)
Definition: hwcontext_cuda.c:127
av_get_pix_fmt_name
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2460