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path: root/libavcodec/videotoolbox.c (plain)
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1/*
2 * Videotoolbox hardware acceleration
3 *
4 * copyright (c) 2012 Sebastien Zwickert
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 "config.h"
24#if CONFIG_VIDEOTOOLBOX
25# include "videotoolbox.h"
26#else
27# include "vda.h"
28#endif
29#include "vda_vt_internal.h"
30#include "libavutil/avutil.h"
31#include "bytestream.h"
32#include "h264dec.h"
33#include "mpegvideo.h"
34#include <TargetConditionals.h>
35
36#ifndef kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder
37# define kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder CFSTR("RequireHardwareAcceleratedVideoDecoder")
38#endif
39
40#define VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING 12
41
42static void videotoolbox_buffer_release(void *opaque, uint8_t *data)
43{
44 CVPixelBufferRef cv_buffer = (CVImageBufferRef)data;
45 CVPixelBufferRelease(cv_buffer);
46}
47
48static int videotoolbox_buffer_copy(VTContext *vtctx,
49 const uint8_t *buffer,
50 uint32_t size)
51{
52 void *tmp;
53
54 tmp = av_fast_realloc(vtctx->bitstream,
55 &vtctx->allocated_size,
56 size);
57
58 if (!tmp)
59 return AVERROR(ENOMEM);
60
61 vtctx->bitstream = tmp;
62 memcpy(vtctx->bitstream, buffer, size);
63 vtctx->bitstream_size = size;
64
65 return 0;
66}
67
68int ff_videotoolbox_alloc_frame(AVCodecContext *avctx, AVFrame *frame)
69{
70 frame->width = avctx->width;
71 frame->height = avctx->height;
72 frame->format = avctx->pix_fmt;
73 frame->buf[0] = av_buffer_alloc(1);
74
75 if (!frame->buf[0])
76 return AVERROR(ENOMEM);
77
78 return 0;
79}
80
81#define AV_W8(p, v) *(p) = (v)
82
83CFDataRef ff_videotoolbox_avcc_extradata_create(AVCodecContext *avctx)
84{
85 H264Context *h = avctx->priv_data;
86 CFDataRef data = NULL;
87 uint8_t *p;
88 int vt_extradata_size = 6 + 2 + h->ps.sps->data_size + 3 + h->ps.pps->data_size;
89 uint8_t *vt_extradata = av_malloc(vt_extradata_size);
90 if (!vt_extradata)
91 return NULL;
92
93 p = vt_extradata;
94
95 AV_W8(p + 0, 1); /* version */
96 AV_W8(p + 1, h->ps.sps->data[1]); /* profile */
97 AV_W8(p + 2, h->ps.sps->data[2]); /* profile compat */
98 AV_W8(p + 3, h->ps.sps->data[3]); /* level */
99 AV_W8(p + 4, 0xff); /* 6 bits reserved (111111) + 2 bits nal size length - 3 (11) */
100 AV_W8(p + 5, 0xe1); /* 3 bits reserved (111) + 5 bits number of sps (00001) */
101 AV_WB16(p + 6, h->ps.sps->data_size);
102 memcpy(p + 8, h->ps.sps->data, h->ps.sps->data_size);
103 p += 8 + h->ps.sps->data_size;
104 AV_W8(p + 0, 1); /* number of pps */
105 AV_WB16(p + 1, h->ps.pps->data_size);
106 memcpy(p + 3, h->ps.pps->data, h->ps.pps->data_size);
107
108 p += 3 + h->ps.pps->data_size;
109 av_assert0(p - vt_extradata == vt_extradata_size);
110
111 data = CFDataCreate(kCFAllocatorDefault, vt_extradata, vt_extradata_size);
112 av_free(vt_extradata);
113 return data;
114}
115
116int ff_videotoolbox_buffer_create(VTContext *vtctx, AVFrame *frame)
117{
118 av_buffer_unref(&frame->buf[0]);
119
120 frame->buf[0] = av_buffer_create((uint8_t*)vtctx->frame,
121 sizeof(vtctx->frame),
122 videotoolbox_buffer_release,
123 NULL,
124 AV_BUFFER_FLAG_READONLY);
125 if (!frame->buf[0]) {
126 return AVERROR(ENOMEM);
127 }
128
129 frame->data[3] = (uint8_t*)vtctx->frame;
130 vtctx->frame = NULL;
131
132 return 0;
133}
134
135int ff_videotoolbox_h264_start_frame(AVCodecContext *avctx,
136 const uint8_t *buffer,
137 uint32_t size)
138{
139 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
140 H264Context *h = avctx->priv_data;
141
142 vtctx->bitstream_size = 0;
143
144 if (h->is_avc == 1) {
145 return videotoolbox_buffer_copy(vtctx, buffer, size);
146 }
147
148 return 0;
149}
150
151int ff_videotoolbox_h264_decode_slice(AVCodecContext *avctx,
152 const uint8_t *buffer,
153 uint32_t size)
154{
155 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
156 H264Context *h = avctx->priv_data;
157 void *tmp;
158
159 if (h->is_avc == 1)
160 return 0;
161
162 tmp = av_fast_realloc(vtctx->bitstream,
163 &vtctx->allocated_size,
164 vtctx->bitstream_size+size+4);
165 if (!tmp)
166 return AVERROR(ENOMEM);
167
168 vtctx->bitstream = tmp;
169
170 AV_WB32(vtctx->bitstream + vtctx->bitstream_size, size);
171 memcpy(vtctx->bitstream + vtctx->bitstream_size + 4, buffer, size);
172
173 vtctx->bitstream_size += size + 4;
174
175 return 0;
176}
177
178int ff_videotoolbox_uninit(AVCodecContext *avctx)
179{
180 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
181 if (vtctx) {
182 av_freep(&vtctx->bitstream);
183 if (vtctx->frame)
184 CVPixelBufferRelease(vtctx->frame);
185 }
186
187 return 0;
188}
189
190#if CONFIG_VIDEOTOOLBOX
191static void videotoolbox_write_mp4_descr_length(PutByteContext *pb, int length)
192{
193 int i;
194 uint8_t b;
195
196 for (i = 3; i >= 0; i--) {
197 b = (length >> (i * 7)) & 0x7F;
198 if (i != 0)
199 b |= 0x80;
200
201 bytestream2_put_byteu(pb, b);
202 }
203}
204
205static CFDataRef videotoolbox_esds_extradata_create(AVCodecContext *avctx)
206{
207 CFDataRef data;
208 uint8_t *rw_extradata;
209 PutByteContext pb;
210 int full_size = 3 + 5 + 13 + 5 + avctx->extradata_size + 3;
211 // ES_DescrTag data + DecoderConfigDescrTag + data + DecSpecificInfoTag + size + SLConfigDescriptor
212 int config_size = 13 + 5 + avctx->extradata_size;
213 int s;
214
215 if (!(rw_extradata = av_mallocz(full_size + VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING)))
216 return NULL;
217
218 bytestream2_init_writer(&pb, rw_extradata, full_size + VIDEOTOOLBOX_ESDS_EXTRADATA_PADDING);
219 bytestream2_put_byteu(&pb, 0); // version
220 bytestream2_put_ne24(&pb, 0); // flags
221
222 // elementary stream descriptor
223 bytestream2_put_byteu(&pb, 0x03); // ES_DescrTag
224 videotoolbox_write_mp4_descr_length(&pb, full_size);
225 bytestream2_put_ne16(&pb, 0); // esid
226 bytestream2_put_byteu(&pb, 0); // stream priority (0-32)
227
228 // decoder configuration descriptor
229 bytestream2_put_byteu(&pb, 0x04); // DecoderConfigDescrTag
230 videotoolbox_write_mp4_descr_length(&pb, config_size);
231 bytestream2_put_byteu(&pb, 32); // object type indication. 32 = AV_CODEC_ID_MPEG4
232 bytestream2_put_byteu(&pb, 0x11); // stream type
233 bytestream2_put_ne24(&pb, 0); // buffer size
234 bytestream2_put_ne32(&pb, 0); // max bitrate
235 bytestream2_put_ne32(&pb, 0); // avg bitrate
236
237 // decoder specific descriptor
238 bytestream2_put_byteu(&pb, 0x05); ///< DecSpecificInfoTag
239 videotoolbox_write_mp4_descr_length(&pb, avctx->extradata_size);
240
241 bytestream2_put_buffer(&pb, avctx->extradata, avctx->extradata_size);
242
243 // SLConfigDescriptor
244 bytestream2_put_byteu(&pb, 0x06); // SLConfigDescrTag
245 bytestream2_put_byteu(&pb, 0x01); // length
246 bytestream2_put_byteu(&pb, 0x02); //
247
248 s = bytestream2_size_p(&pb);
249
250 data = CFDataCreate(kCFAllocatorDefault, rw_extradata, s);
251
252 av_freep(&rw_extradata);
253 return data;
254}
255
256static CMSampleBufferRef videotoolbox_sample_buffer_create(CMFormatDescriptionRef fmt_desc,
257 void *buffer,
258 int size)
259{
260 OSStatus status;
261 CMBlockBufferRef block_buf;
262 CMSampleBufferRef sample_buf;
263
264 block_buf = NULL;
265 sample_buf = NULL;
266
267 status = CMBlockBufferCreateWithMemoryBlock(kCFAllocatorDefault,// structureAllocator
268 buffer, // memoryBlock
269 size, // blockLength
270 kCFAllocatorNull, // blockAllocator
271 NULL, // customBlockSource
272 0, // offsetToData
273 size, // dataLength
274 0, // flags
275 &block_buf);
276
277 if (!status) {
278 status = CMSampleBufferCreate(kCFAllocatorDefault, // allocator
279 block_buf, // dataBuffer
280 TRUE, // dataReady
281 0, // makeDataReadyCallback
282 0, // makeDataReadyRefcon
283 fmt_desc, // formatDescription
284 1, // numSamples
285 0, // numSampleTimingEntries
286 NULL, // sampleTimingArray
287 0, // numSampleSizeEntries
288 NULL, // sampleSizeArray
289 &sample_buf);
290 }
291
292 if (block_buf)
293 CFRelease(block_buf);
294
295 return sample_buf;
296}
297
298static void videotoolbox_decoder_callback(void *opaque,
299 void *sourceFrameRefCon,
300 OSStatus status,
301 VTDecodeInfoFlags flags,
302 CVImageBufferRef image_buffer,
303 CMTime pts,
304 CMTime duration)
305{
306 AVCodecContext *avctx = opaque;
307 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
308
309 if (vtctx->frame) {
310 CVPixelBufferRelease(vtctx->frame);
311 vtctx->frame = NULL;
312 }
313
314 if (!image_buffer) {
315 av_log(NULL, AV_LOG_DEBUG, "vt decoder cb: output image buffer is null\n");
316 return;
317 }
318
319 vtctx->frame = CVPixelBufferRetain(image_buffer);
320}
321
322static OSStatus videotoolbox_session_decode_frame(AVCodecContext *avctx)
323{
324 OSStatus status;
325 CMSampleBufferRef sample_buf;
326 AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
327 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
328
329 sample_buf = videotoolbox_sample_buffer_create(videotoolbox->cm_fmt_desc,
330 vtctx->bitstream,
331 vtctx->bitstream_size);
332
333 if (!sample_buf)
334 return -1;
335
336 status = VTDecompressionSessionDecodeFrame(videotoolbox->session,
337 sample_buf,
338 0, // decodeFlags
339 NULL, // sourceFrameRefCon
340 0); // infoFlagsOut
341 if (status == noErr)
342 status = VTDecompressionSessionWaitForAsynchronousFrames(videotoolbox->session);
343
344 CFRelease(sample_buf);
345
346 return status;
347}
348
349static int videotoolbox_common_end_frame(AVCodecContext *avctx, AVFrame *frame)
350{
351 int status;
352 AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
353 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
354
355 if (!videotoolbox->session || !vtctx->bitstream)
356 return AVERROR_INVALIDDATA;
357
358 status = videotoolbox_session_decode_frame(avctx);
359
360 if (status) {
361 av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
362 return AVERROR_UNKNOWN;
363 }
364
365 if (!vtctx->frame)
366 return AVERROR_UNKNOWN;
367
368 return ff_videotoolbox_buffer_create(vtctx, frame);
369}
370
371static int videotoolbox_h264_end_frame(AVCodecContext *avctx)
372{
373 H264Context *h = avctx->priv_data;
374 AVFrame *frame = h->cur_pic_ptr->f;
375
376 return videotoolbox_common_end_frame(avctx, frame);
377}
378
379static int videotoolbox_mpeg_start_frame(AVCodecContext *avctx,
380 const uint8_t *buffer,
381 uint32_t size)
382{
383 VTContext *vtctx = avctx->internal->hwaccel_priv_data;
384
385 return videotoolbox_buffer_copy(vtctx, buffer, size);
386}
387
388static int videotoolbox_mpeg_decode_slice(AVCodecContext *avctx,
389 const uint8_t *buffer,
390 uint32_t size)
391{
392 return 0;
393}
394
395static int videotoolbox_mpeg_end_frame(AVCodecContext *avctx)
396{
397 MpegEncContext *s = avctx->priv_data;
398 AVFrame *frame = s->current_picture_ptr->f;
399
400 return videotoolbox_common_end_frame(avctx, frame);
401}
402
403static CFDictionaryRef videotoolbox_decoder_config_create(CMVideoCodecType codec_type,
404 AVCodecContext *avctx)
405{
406 CFMutableDictionaryRef config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
407 0,
408 &kCFTypeDictionaryKeyCallBacks,
409 &kCFTypeDictionaryValueCallBacks);
410
411 CFDictionarySetValue(config_info,
412 kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder,
413 kCFBooleanTrue);
414
415 if (avctx->extradata_size) {
416 CFMutableDictionaryRef avc_info;
417 CFDataRef data = NULL;
418
419 avc_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
420 1,
421 &kCFTypeDictionaryKeyCallBacks,
422 &kCFTypeDictionaryValueCallBacks);
423
424 switch (codec_type) {
425 case kCMVideoCodecType_MPEG4Video :
426 data = videotoolbox_esds_extradata_create(avctx);
427 if (data)
428 CFDictionarySetValue(avc_info, CFSTR("esds"), data);
429 break;
430 case kCMVideoCodecType_H264 :
431 data = ff_videotoolbox_avcc_extradata_create(avctx);
432 if (data)
433 CFDictionarySetValue(avc_info, CFSTR("avcC"), data);
434 break;
435 default:
436 break;
437 }
438
439 CFDictionarySetValue(config_info,
440 kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms,
441 avc_info);
442
443 if (data)
444 CFRelease(data);
445
446 CFRelease(avc_info);
447 }
448 return config_info;
449}
450
451static CFDictionaryRef videotoolbox_buffer_attributes_create(int width,
452 int height,
453 OSType pix_fmt)
454{
455 CFMutableDictionaryRef buffer_attributes;
456 CFMutableDictionaryRef io_surface_properties;
457 CFNumberRef cv_pix_fmt;
458 CFNumberRef w;
459 CFNumberRef h;
460
461 w = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &width);
462 h = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &height);
463 cv_pix_fmt = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &pix_fmt);
464
465 buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
466 4,
467 &kCFTypeDictionaryKeyCallBacks,
468 &kCFTypeDictionaryValueCallBacks);
469 io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
470 0,
471 &kCFTypeDictionaryKeyCallBacks,
472 &kCFTypeDictionaryValueCallBacks);
473
474 if (pix_fmt)
475 CFDictionarySetValue(buffer_attributes, kCVPixelBufferPixelFormatTypeKey, cv_pix_fmt);
476 CFDictionarySetValue(buffer_attributes, kCVPixelBufferIOSurfacePropertiesKey, io_surface_properties);
477 CFDictionarySetValue(buffer_attributes, kCVPixelBufferWidthKey, w);
478 CFDictionarySetValue(buffer_attributes, kCVPixelBufferHeightKey, h);
479#if TARGET_OS_IPHONE
480 CFDictionarySetValue(buffer_attributes, kCVPixelBufferOpenGLESCompatibilityKey, kCFBooleanTrue);
481#else
482 CFDictionarySetValue(buffer_attributes, kCVPixelBufferIOSurfaceOpenGLTextureCompatibilityKey, kCFBooleanTrue);
483#endif
484
485 CFRelease(io_surface_properties);
486 CFRelease(cv_pix_fmt);
487 CFRelease(w);
488 CFRelease(h);
489
490 return buffer_attributes;
491}
492
493static CMVideoFormatDescriptionRef videotoolbox_format_desc_create(CMVideoCodecType codec_type,
494 CFDictionaryRef decoder_spec,
495 int width,
496 int height)
497{
498 CMFormatDescriptionRef cm_fmt_desc;
499 OSStatus status;
500
501 status = CMVideoFormatDescriptionCreate(kCFAllocatorDefault,
502 codec_type,
503 width,
504 height,
505 decoder_spec, // Dictionary of extension
506 &cm_fmt_desc);
507
508 if (status)
509 return NULL;
510
511 return cm_fmt_desc;
512}
513
514static int videotoolbox_default_init(AVCodecContext *avctx)
515{
516 AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
517 OSStatus status;
518 VTDecompressionOutputCallbackRecord decoder_cb;
519 CFDictionaryRef decoder_spec;
520 CFDictionaryRef buf_attr;
521
522 if (!videotoolbox) {
523 av_log(avctx, AV_LOG_ERROR, "hwaccel context is not set\n");
524 return -1;
525 }
526
527 switch( avctx->codec_id ) {
528 case AV_CODEC_ID_H263 :
529 videotoolbox->cm_codec_type = kCMVideoCodecType_H263;
530 break;
531 case AV_CODEC_ID_H264 :
532 videotoolbox->cm_codec_type = kCMVideoCodecType_H264;
533 break;
534 case AV_CODEC_ID_MPEG1VIDEO :
535 videotoolbox->cm_codec_type = kCMVideoCodecType_MPEG1Video;
536 break;
537 case AV_CODEC_ID_MPEG2VIDEO :
538 videotoolbox->cm_codec_type = kCMVideoCodecType_MPEG2Video;
539 break;
540 case AV_CODEC_ID_MPEG4 :
541 videotoolbox->cm_codec_type = kCMVideoCodecType_MPEG4Video;
542 break;
543 default :
544 break;
545 }
546
547 decoder_spec = videotoolbox_decoder_config_create(videotoolbox->cm_codec_type, avctx);
548
549 videotoolbox->cm_fmt_desc = videotoolbox_format_desc_create(videotoolbox->cm_codec_type,
550 decoder_spec,
551 avctx->width,
552 avctx->height);
553 if (!videotoolbox->cm_fmt_desc) {
554 if (decoder_spec)
555 CFRelease(decoder_spec);
556
557 av_log(avctx, AV_LOG_ERROR, "format description creation failed\n");
558 return -1;
559 }
560
561 buf_attr = videotoolbox_buffer_attributes_create(avctx->width,
562 avctx->height,
563 videotoolbox->cv_pix_fmt_type);
564
565 decoder_cb.decompressionOutputCallback = videotoolbox_decoder_callback;
566 decoder_cb.decompressionOutputRefCon = avctx;
567
568 status = VTDecompressionSessionCreate(NULL, // allocator
569 videotoolbox->cm_fmt_desc, // videoFormatDescription
570 decoder_spec, // videoDecoderSpecification
571 buf_attr, // destinationImageBufferAttributes
572 &decoder_cb, // outputCallback
573 &videotoolbox->session); // decompressionSessionOut
574
575 if (decoder_spec)
576 CFRelease(decoder_spec);
577 if (buf_attr)
578 CFRelease(buf_attr);
579
580 switch (status) {
581 case kVTVideoDecoderNotAvailableNowErr:
582 case kVTVideoDecoderUnsupportedDataFormatErr:
583 return AVERROR(ENOSYS);
584 case kVTVideoDecoderMalfunctionErr:
585 return AVERROR(EINVAL);
586 case kVTVideoDecoderBadDataErr :
587 return AVERROR_INVALIDDATA;
588 case 0:
589 return 0;
590 default:
591 return AVERROR_UNKNOWN;
592 }
593}
594
595static void videotoolbox_default_free(AVCodecContext *avctx)
596{
597 AVVideotoolboxContext *videotoolbox = avctx->hwaccel_context;
598
599 if (videotoolbox) {
600 if (videotoolbox->cm_fmt_desc)
601 CFRelease(videotoolbox->cm_fmt_desc);
602
603 if (videotoolbox->session) {
604 VTDecompressionSessionInvalidate(videotoolbox->session);
605 CFRelease(videotoolbox->session);
606 }
607 }
608}
609
610AVHWAccel ff_h263_videotoolbox_hwaccel = {
611 .name = "h263_videotoolbox",
612 .type = AVMEDIA_TYPE_VIDEO,
613 .id = AV_CODEC_ID_H263,
614 .pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
615 .alloc_frame = ff_videotoolbox_alloc_frame,
616 .start_frame = videotoolbox_mpeg_start_frame,
617 .decode_slice = videotoolbox_mpeg_decode_slice,
618 .end_frame = videotoolbox_mpeg_end_frame,
619 .uninit = ff_videotoolbox_uninit,
620 .priv_data_size = sizeof(VTContext),
621};
622
623AVHWAccel ff_h264_videotoolbox_hwaccel = {
624 .name = "h264_videotoolbox",
625 .type = AVMEDIA_TYPE_VIDEO,
626 .id = AV_CODEC_ID_H264,
627 .pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
628 .alloc_frame = ff_videotoolbox_alloc_frame,
629 .start_frame = ff_videotoolbox_h264_start_frame,
630 .decode_slice = ff_videotoolbox_h264_decode_slice,
631 .end_frame = videotoolbox_h264_end_frame,
632 .uninit = ff_videotoolbox_uninit,
633 .priv_data_size = sizeof(VTContext),
634};
635
636AVHWAccel ff_mpeg1_videotoolbox_hwaccel = {
637 .name = "mpeg1_videotoolbox",
638 .type = AVMEDIA_TYPE_VIDEO,
639 .id = AV_CODEC_ID_MPEG1VIDEO,
640 .pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
641 .alloc_frame = ff_videotoolbox_alloc_frame,
642 .start_frame = videotoolbox_mpeg_start_frame,
643 .decode_slice = videotoolbox_mpeg_decode_slice,
644 .end_frame = videotoolbox_mpeg_end_frame,
645 .uninit = ff_videotoolbox_uninit,
646 .priv_data_size = sizeof(VTContext),
647};
648
649AVHWAccel ff_mpeg2_videotoolbox_hwaccel = {
650 .name = "mpeg2_videotoolbox",
651 .type = AVMEDIA_TYPE_VIDEO,
652 .id = AV_CODEC_ID_MPEG2VIDEO,
653 .pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
654 .alloc_frame = ff_videotoolbox_alloc_frame,
655 .start_frame = videotoolbox_mpeg_start_frame,
656 .decode_slice = videotoolbox_mpeg_decode_slice,
657 .end_frame = videotoolbox_mpeg_end_frame,
658 .uninit = ff_videotoolbox_uninit,
659 .priv_data_size = sizeof(VTContext),
660};
661
662AVHWAccel ff_mpeg4_videotoolbox_hwaccel = {
663 .name = "mpeg4_videotoolbox",
664 .type = AVMEDIA_TYPE_VIDEO,
665 .id = AV_CODEC_ID_MPEG4,
666 .pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
667 .alloc_frame = ff_videotoolbox_alloc_frame,
668 .start_frame = videotoolbox_mpeg_start_frame,
669 .decode_slice = videotoolbox_mpeg_decode_slice,
670 .end_frame = videotoolbox_mpeg_end_frame,
671 .uninit = ff_videotoolbox_uninit,
672 .priv_data_size = sizeof(VTContext),
673};
674
675AVVideotoolboxContext *av_videotoolbox_alloc_context(void)
676{
677 AVVideotoolboxContext *ret = av_mallocz(sizeof(*ret));
678
679 if (ret) {
680 ret->output_callback = videotoolbox_decoder_callback;
681 ret->cv_pix_fmt_type = kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange;
682 }
683
684 return ret;
685}
686
687int av_videotoolbox_default_init(AVCodecContext *avctx)
688{
689 return av_videotoolbox_default_init2(avctx, NULL);
690}
691
692int av_videotoolbox_default_init2(AVCodecContext *avctx, AVVideotoolboxContext *vtctx)
693{
694 avctx->hwaccel_context = vtctx ?: av_videotoolbox_alloc_context();
695 if (!avctx->hwaccel_context)
696 return AVERROR(ENOMEM);
697 return videotoolbox_default_init(avctx);
698}
699
700void av_videotoolbox_default_free(AVCodecContext *avctx)
701{
702
703 videotoolbox_default_free(avctx);
704 av_freep(&avctx->hwaccel_context);
705}
706#endif /* CONFIG_VIDEOTOOLBOX */
707
generated by cgit at 2024-05-17 03:07:41 (GMT)