avcodec/aacdec_fixed: fix invalid shift in predict()
[ffmpeg.git] / libavcodec / vda_h264.c
1 /*
2  * VDA H264 HW acceleration.
3  *
4  * copyright (c) 2011 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 <CoreFoundation/CFDictionary.h>
24 #include <CoreFoundation/CFNumber.h>
25 #include <CoreFoundation/CFData.h>
26
27 #include "vda.h"
28 #include "libavutil/avutil.h"
29 #include "h264dec.h"
30
31 struct vda_buffer {
32     CVPixelBufferRef cv_buffer;
33 };
34 #include "internal.h"
35 #include "vda_vt_internal.h"
36
37 /* Decoder callback that adds the vda frame to the queue in display order. */
38 static void vda_decoder_callback(void *vda_hw_ctx,
39                                  CFDictionaryRef user_info,
40                                  OSStatus status,
41                                  uint32_t infoFlags,
42                                  CVImageBufferRef image_buffer)
43 {
44     struct vda_context *vda_ctx = vda_hw_ctx;
45
46     if (infoFlags & kVDADecodeInfo_FrameDropped)
47         vda_ctx->cv_buffer = NULL;
48
49     if (!image_buffer)
50         return;
51
52     if (vda_ctx->cv_pix_fmt_type != CVPixelBufferGetPixelFormatType(image_buffer))
53         return;
54
55     vda_ctx->cv_buffer = CVPixelBufferRetain(image_buffer);
56 }
57
58 static int vda_sync_decode(VTContext *ctx, struct vda_context *vda_ctx)
59 {
60     OSStatus status;
61     CFDataRef coded_frame;
62     uint32_t flush_flags = 1 << 0; ///< kVDADecoderFlush_emitFrames
63
64     coded_frame = CFDataCreate(kCFAllocatorDefault,
65                                ctx->bitstream,
66                                ctx->bitstream_size);
67
68     status = VDADecoderDecode(vda_ctx->decoder, 0, coded_frame, NULL);
69
70     if (kVDADecoderNoErr == status)
71         status = VDADecoderFlush(vda_ctx->decoder, flush_flags);
72
73     CFRelease(coded_frame);
74
75     return status;
76 }
77
78
79 static int vda_old_h264_start_frame(AVCodecContext *avctx,
80                                 av_unused const uint8_t *buffer,
81                                 av_unused uint32_t size)
82 {
83     VTContext *vda = avctx->internal->hwaccel_priv_data;
84     struct vda_context *vda_ctx = avctx->hwaccel_context;
85
86     if (!vda_ctx->decoder)
87         return -1;
88
89     vda->bitstream_size = 0;
90
91     return 0;
92 }
93
94 static int vda_old_h264_decode_slice(AVCodecContext *avctx,
95                                  const uint8_t *buffer,
96                                  uint32_t size)
97 {
98     VTContext *vda              = avctx->internal->hwaccel_priv_data;
99     struct vda_context *vda_ctx = avctx->hwaccel_context;
100     void *tmp;
101
102     if (!vda_ctx->decoder)
103         return -1;
104
105     tmp = av_fast_realloc(vda->bitstream,
106                           &vda->allocated_size,
107                           vda->bitstream_size + size + 4);
108     if (!tmp)
109         return AVERROR(ENOMEM);
110
111     vda->bitstream = tmp;
112
113     AV_WB32(vda->bitstream + vda->bitstream_size, size);
114     memcpy(vda->bitstream + vda->bitstream_size + 4, buffer, size);
115
116     vda->bitstream_size += size + 4;
117
118     return 0;
119 }
120
121 static void vda_h264_release_buffer(void *opaque, uint8_t *data)
122 {
123     struct vda_buffer *context = opaque;
124     CVPixelBufferRelease(context->cv_buffer);
125     av_free(context);
126 }
127
128 static int vda_old_h264_end_frame(AVCodecContext *avctx)
129 {
130     H264Context *h                      = avctx->priv_data;
131     VTContext *vda                      = avctx->internal->hwaccel_priv_data;
132     struct vda_context *vda_ctx         = avctx->hwaccel_context;
133     AVFrame *frame                      = h->cur_pic_ptr->f;
134     struct vda_buffer *context;
135     AVBufferRef *buffer;
136     int status;
137
138     if (!vda_ctx->decoder || !vda->bitstream)
139         return -1;
140
141     status = vda_sync_decode(vda, vda_ctx);
142     frame->data[3] = (void*)vda_ctx->cv_buffer;
143
144     if (status)
145         av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
146
147     if (!vda_ctx->use_ref_buffer || status)
148         return status;
149
150     context = av_mallocz(sizeof(*context));
151     buffer = av_buffer_create(NULL, 0, vda_h264_release_buffer, context, 0);
152     if (!context || !buffer) {
153         CVPixelBufferRelease(vda_ctx->cv_buffer);
154         av_free(context);
155         return -1;
156     }
157
158     context->cv_buffer = vda_ctx->cv_buffer;
159     frame->buf[3] = buffer;
160
161     return status;
162 }
163
164 int ff_vda_create_decoder(struct vda_context *vda_ctx,
165                           uint8_t *extradata,
166                           int extradata_size)
167 {
168     OSStatus status;
169     CFNumberRef height;
170     CFNumberRef width;
171     CFNumberRef format;
172     CFDataRef avc_data;
173     CFMutableDictionaryRef config_info;
174     CFMutableDictionaryRef buffer_attributes;
175     CFMutableDictionaryRef io_surface_properties;
176     CFNumberRef cv_pix_fmt;
177
178     vda_ctx->priv_bitstream = NULL;
179     vda_ctx->priv_allocated_size = 0;
180
181     /* Each VCL NAL in the bitstream sent to the decoder
182      * is preceded by a 4 bytes length header.
183      * Change the avcC atom header if needed, to signal headers of 4 bytes. */
184     if (extradata_size >= 4 && (extradata[4] & 0x03) != 0x03) {
185         uint8_t *rw_extradata;
186
187         if (!(rw_extradata = av_malloc(extradata_size)))
188             return AVERROR(ENOMEM);
189
190         memcpy(rw_extradata, extradata, extradata_size);
191
192         rw_extradata[4] |= 0x03;
193
194         avc_data = CFDataCreate(kCFAllocatorDefault, rw_extradata, extradata_size);
195
196         av_freep(&rw_extradata);
197     } else {
198         avc_data = CFDataCreate(kCFAllocatorDefault, extradata, extradata_size);
199     }
200
201     config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
202                                             4,
203                                             &kCFTypeDictionaryKeyCallBacks,
204                                             &kCFTypeDictionaryValueCallBacks);
205
206     height   = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->height);
207     width    = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->width);
208     format   = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &vda_ctx->format);
209
210     CFDictionarySetValue(config_info, kVDADecoderConfiguration_Height, height);
211     CFDictionarySetValue(config_info, kVDADecoderConfiguration_Width, width);
212     CFDictionarySetValue(config_info, kVDADecoderConfiguration_SourceFormat, format);
213     CFDictionarySetValue(config_info, kVDADecoderConfiguration_avcCData, avc_data);
214
215     buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
216                                                   2,
217                                                   &kCFTypeDictionaryKeyCallBacks,
218                                                   &kCFTypeDictionaryValueCallBacks);
219     io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
220                                                       0,
221                                                       &kCFTypeDictionaryKeyCallBacks,
222                                                       &kCFTypeDictionaryValueCallBacks);
223     cv_pix_fmt  = CFNumberCreate(kCFAllocatorDefault,
224                                  kCFNumberSInt32Type,
225                                  &vda_ctx->cv_pix_fmt_type);
226     CFDictionarySetValue(buffer_attributes,
227                          kCVPixelBufferPixelFormatTypeKey,
228                          cv_pix_fmt);
229     CFDictionarySetValue(buffer_attributes,
230                          kCVPixelBufferIOSurfacePropertiesKey,
231                          io_surface_properties);
232
233     status = VDADecoderCreate(config_info,
234                               buffer_attributes,
235                               (VDADecoderOutputCallback *)vda_decoder_callback,
236                               vda_ctx,
237                               &vda_ctx->decoder);
238
239     CFRelease(height);
240     CFRelease(width);
241     CFRelease(format);
242     CFRelease(avc_data);
243     CFRelease(config_info);
244     CFRelease(io_surface_properties);
245     CFRelease(cv_pix_fmt);
246     CFRelease(buffer_attributes);
247
248     return status;
249 }
250
251 int ff_vda_destroy_decoder(struct vda_context *vda_ctx)
252 {
253     OSStatus status = kVDADecoderNoErr;
254
255     if (vda_ctx->decoder)
256         status = VDADecoderDestroy(vda_ctx->decoder);
257
258     return status;
259 }
260
261 AVHWAccel ff_h264_vda_old_hwaccel = {
262     .name           = "h264_vda",
263     .type           = AVMEDIA_TYPE_VIDEO,
264     .id             = AV_CODEC_ID_H264,
265     .pix_fmt        = AV_PIX_FMT_VDA_VLD,
266     .start_frame    = vda_old_h264_start_frame,
267     .decode_slice   = vda_old_h264_decode_slice,
268     .end_frame      = vda_old_h264_end_frame,
269     .uninit         = ff_videotoolbox_uninit,
270     .priv_data_size = sizeof(VTContext),
271 };
272
273 void ff_vda_output_callback(void *opaque,
274                             CFDictionaryRef user_info,
275                             OSStatus status,
276                             uint32_t infoFlags,
277                             CVImageBufferRef image_buffer)
278 {
279     AVCodecContext *ctx = opaque;
280     VTContext *vda = ctx->internal->hwaccel_priv_data;
281
282
283     if (vda->frame) {
284         CVPixelBufferRelease(vda->frame);
285         vda->frame = NULL;
286     }
287
288     if (!image_buffer)
289         return;
290
291     vda->frame = CVPixelBufferRetain(image_buffer);
292 }
293
294 static int vda_h264_end_frame(AVCodecContext *avctx)
295 {
296     H264Context *h        = avctx->priv_data;
297     VTContext *vda        = avctx->internal->hwaccel_priv_data;
298     AVVDAContext *vda_ctx = avctx->hwaccel_context;
299     AVFrame *frame        = h->cur_pic_ptr->f;
300     uint32_t flush_flags  = 1 << 0; ///< kVDADecoderFlush_emitFrames
301     CFDataRef coded_frame;
302     OSStatus status;
303
304     if (!vda->bitstream_size)
305         return AVERROR_INVALIDDATA;
306
307
308     coded_frame = CFDataCreate(kCFAllocatorDefault,
309                                vda->bitstream,
310                                vda->bitstream_size);
311
312     status = VDADecoderDecode(vda_ctx->decoder, 0, coded_frame, NULL);
313
314     if (status == kVDADecoderNoErr)
315         status = VDADecoderFlush(vda_ctx->decoder, flush_flags);
316
317     CFRelease(coded_frame);
318
319     if (!vda->frame)
320         return AVERROR_UNKNOWN;
321
322     if (status != kVDADecoderNoErr) {
323         av_log(avctx, AV_LOG_ERROR, "Failed to decode frame (%d)\n", status);
324         return AVERROR_UNKNOWN;
325     }
326
327     return ff_videotoolbox_buffer_create(vda, frame);
328 }
329
330 int ff_vda_default_init(AVCodecContext *avctx)
331 {
332     AVVDAContext *vda_ctx = avctx->hwaccel_context;
333     OSStatus status = kVDADecoderNoErr;
334     CFNumberRef height;
335     CFNumberRef width;
336     CFNumberRef format;
337     CFDataRef avc_data;
338     CFMutableDictionaryRef config_info;
339     CFMutableDictionaryRef buffer_attributes;
340     CFMutableDictionaryRef io_surface_properties;
341     CFNumberRef cv_pix_fmt;
342     int32_t fmt = 'avc1', pix_fmt = vda_ctx->cv_pix_fmt_type;
343
344     // kCVPixelFormatType_420YpCbCr8Planar;
345
346     avc_data = ff_videotoolbox_avcc_extradata_create(avctx);
347
348     config_info = CFDictionaryCreateMutable(kCFAllocatorDefault,
349                                             4,
350                                             &kCFTypeDictionaryKeyCallBacks,
351                                             &kCFTypeDictionaryValueCallBacks);
352
353     height = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &avctx->height);
354     width  = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &avctx->width);
355     format = CFNumberCreate(kCFAllocatorDefault, kCFNumberSInt32Type, &fmt);
356     CFDictionarySetValue(config_info, kVDADecoderConfiguration_Height, height);
357     CFDictionarySetValue(config_info, kVDADecoderConfiguration_Width, width);
358     CFDictionarySetValue(config_info, kVDADecoderConfiguration_avcCData, avc_data);
359     CFDictionarySetValue(config_info, kVDADecoderConfiguration_SourceFormat, format);
360
361     buffer_attributes = CFDictionaryCreateMutable(kCFAllocatorDefault,
362                                                   2,
363                                                   &kCFTypeDictionaryKeyCallBacks,
364                                                   &kCFTypeDictionaryValueCallBacks);
365     io_surface_properties = CFDictionaryCreateMutable(kCFAllocatorDefault,
366                                                       0,
367                                                       &kCFTypeDictionaryKeyCallBacks,
368                                                       &kCFTypeDictionaryValueCallBacks);
369     cv_pix_fmt      = CFNumberCreate(kCFAllocatorDefault,
370                                      kCFNumberSInt32Type,
371                                      &pix_fmt);
372
373     CFDictionarySetValue(buffer_attributes,
374                          kCVPixelBufferPixelFormatTypeKey,
375                          cv_pix_fmt);
376     CFDictionarySetValue(buffer_attributes,
377                          kCVPixelBufferIOSurfacePropertiesKey,
378                          io_surface_properties);
379
380     status = VDADecoderCreate(config_info,
381                               buffer_attributes,
382                               (VDADecoderOutputCallback *)ff_vda_output_callback,
383                               avctx,
384                               &vda_ctx->decoder);
385
386     CFRelease(format);
387     CFRelease(height);
388     CFRelease(width);
389     CFRelease(avc_data);
390     CFRelease(config_info);
391     CFRelease(cv_pix_fmt);
392     CFRelease(io_surface_properties);
393     CFRelease(buffer_attributes);
394
395     if (status != kVDADecoderNoErr) {
396         av_log(avctx, AV_LOG_ERROR, "Cannot initialize VDA %d\n", status);
397     }
398
399     switch (status) {
400     case kVDADecoderHardwareNotSupportedErr:
401     case kVDADecoderFormatNotSupportedErr:
402         return AVERROR(ENOSYS);
403     case kVDADecoderConfigurationError:
404         return AVERROR(EINVAL);
405     case kVDADecoderDecoderFailedErr:
406         return AVERROR_INVALIDDATA;
407     case kVDADecoderNoErr:
408         return 0;
409     default:
410         return AVERROR_UNKNOWN;
411     }
412 }
413
414 AVHWAccel ff_h264_vda_hwaccel = {
415     .name           = "h264_vda",
416     .type           = AVMEDIA_TYPE_VIDEO,
417     .id             = AV_CODEC_ID_H264,
418     .pix_fmt        = AV_PIX_FMT_VDA,
419     .alloc_frame    = ff_videotoolbox_alloc_frame,
420     .start_frame    = ff_videotoolbox_h264_start_frame,
421     .decode_slice   = ff_videotoolbox_h264_decode_slice,
422     .end_frame      = vda_h264_end_frame,
423     .uninit         = ff_videotoolbox_uninit,
424     .priv_data_size = sizeof(VTContext),
425 };