1 /*
2 * Android MediaCodec MPEG-2 / H.264 / H.265 / MPEG-4 / VP8 / VP9 decoders
3 *
4 * Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
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 <stdint.h>
24 #include <string.h>
25
26 #include "libavutil/avassert.h"
27 #include "libavutil/common.h"
28 #include "libavutil/opt.h"
29 #include "libavutil/intreadwrite.h"
30 #include "libavutil/pixfmt.h"
31 #include "libavutil/internal.h"
32
33 #include "avcodec.h"
34 #include "decode.h"
35 #include "h264_parse.h"
36 #include "hevc_parse.h"
37 #include "hwconfig.h"
38 #include "internal.h"
39 #include "mediacodec_wrapper.h"
40 #include "mediacodecdec_common.h"
41
42 typedef struct MediaCodecH264DecContext {
43
44 AVClass *avclass;
45
46 MediaCodecDecContext *ctx;
47
48 AVPacket buffered_pkt;
49
50 int delay_flush;
51 int amlogic_mpeg2_api23_workaround;
52
53 } MediaCodecH264DecContext;
54
mediacodec_decode_close(AVCodecContext * avctx)55 static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
56 {
57 MediaCodecH264DecContext *s = avctx->priv_data;
58
59 ff_mediacodec_dec_close(avctx, s->ctx);
60 s->ctx = NULL;
61
62 av_packet_unref(&s->buffered_pkt);
63
64 return 0;
65 }
66
67 #if CONFIG_H264_MEDIACODEC_DECODER || CONFIG_HEVC_MEDIACODEC_DECODER
h2645_ps_to_nalu(const uint8_t * src,int src_size,uint8_t ** out,int * out_size)68 static int h2645_ps_to_nalu(const uint8_t *src, int src_size, uint8_t **out, int *out_size)
69 {
70 int i;
71 int ret = 0;
72 uint8_t *p = NULL;
73 static const uint8_t nalu_header[] = { 0x00, 0x00, 0x00, 0x01 };
74
75 if (!out || !out_size) {
76 return AVERROR(EINVAL);
77 }
78
79 p = av_malloc(sizeof(nalu_header) + src_size);
80 if (!p) {
81 return AVERROR(ENOMEM);
82 }
83
84 *out = p;
85 *out_size = sizeof(nalu_header) + src_size;
86
87 memcpy(p, nalu_header, sizeof(nalu_header));
88 memcpy(p + sizeof(nalu_header), src, src_size);
89
90 /* Escape 0x00, 0x00, 0x0{0-3} pattern */
91 for (i = 4; i < *out_size; i++) {
92 if (i < *out_size - 3 &&
93 p[i + 0] == 0 &&
94 p[i + 1] == 0 &&
95 p[i + 2] <= 3) {
96 uint8_t *new;
97
98 *out_size += 1;
99 new = av_realloc(*out, *out_size);
100 if (!new) {
101 ret = AVERROR(ENOMEM);
102 goto done;
103 }
104 *out = p = new;
105
106 i = i + 2;
107 memmove(p + i + 1, p + i, *out_size - (i + 1));
108 p[i] = 0x03;
109 }
110 }
111 done:
112 if (ret < 0) {
113 av_freep(out);
114 *out_size = 0;
115 }
116
117 return ret;
118 }
119 #endif
120
121 #if CONFIG_H264_MEDIACODEC_DECODER
h264_set_extradata(AVCodecContext * avctx,FFAMediaFormat * format)122 static int h264_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
123 {
124 int i;
125 int ret;
126
127 H264ParamSets ps;
128 const PPS *pps = NULL;
129 const SPS *sps = NULL;
130 int is_avc = 0;
131 int nal_length_size = 0;
132
133 memset(&ps, 0, sizeof(ps));
134
135 ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
136 &ps, &is_avc, &nal_length_size, 0, avctx);
137 if (ret < 0) {
138 goto done;
139 }
140
141 for (i = 0; i < MAX_PPS_COUNT; i++) {
142 if (ps.pps_list[i]) {
143 pps = (const PPS*)ps.pps_list[i]->data;
144 break;
145 }
146 }
147
148 if (pps) {
149 if (ps.sps_list[pps->sps_id]) {
150 sps = (const SPS*)ps.sps_list[pps->sps_id]->data;
151 }
152 }
153
154 if (pps && sps) {
155 uint8_t *data = NULL;
156 int data_size = 0;
157
158 if ((ret = h2645_ps_to_nalu(sps->data, sps->data_size, &data, &data_size)) < 0) {
159 goto done;
160 }
161 ff_AMediaFormat_setBuffer(format, "csd-0", (void*)data, data_size);
162 av_freep(&data);
163
164 if ((ret = h2645_ps_to_nalu(pps->data, pps->data_size, &data, &data_size)) < 0) {
165 goto done;
166 }
167 ff_AMediaFormat_setBuffer(format, "csd-1", (void*)data, data_size);
168 av_freep(&data);
169 } else {
170 av_log(avctx, AV_LOG_ERROR, "Could not extract PPS/SPS from extradata");
171 ret = AVERROR_INVALIDDATA;
172 }
173
174 done:
175 ff_h264_ps_uninit(&ps);
176
177 return ret;
178 }
179 #endif
180
181 #if CONFIG_HEVC_MEDIACODEC_DECODER
hevc_set_extradata(AVCodecContext * avctx,FFAMediaFormat * format)182 static int hevc_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
183 {
184 int i;
185 int ret;
186
187 HEVCParamSets ps;
188 HEVCSEI sei;
189
190 const HEVCVPS *vps = NULL;
191 const HEVCPPS *pps = NULL;
192 const HEVCSPS *sps = NULL;
193 int is_nalff = 0;
194 int nal_length_size = 0;
195
196 uint8_t *vps_data = NULL;
197 uint8_t *sps_data = NULL;
198 uint8_t *pps_data = NULL;
199 int vps_data_size = 0;
200 int sps_data_size = 0;
201 int pps_data_size = 0;
202
203 memset(&ps, 0, sizeof(ps));
204 memset(&sei, 0, sizeof(sei));
205
206 ret = ff_hevc_decode_extradata(avctx->extradata, avctx->extradata_size,
207 &ps, &sei, &is_nalff, &nal_length_size, 0, 1, avctx);
208 if (ret < 0) {
209 goto done;
210 }
211
212 for (i = 0; i < HEVC_MAX_VPS_COUNT; i++) {
213 if (ps.vps_list[i]) {
214 vps = (const HEVCVPS*)ps.vps_list[i]->data;
215 break;
216 }
217 }
218
219 for (i = 0; i < HEVC_MAX_PPS_COUNT; i++) {
220 if (ps.pps_list[i]) {
221 pps = (const HEVCPPS*)ps.pps_list[i]->data;
222 break;
223 }
224 }
225
226 if (pps) {
227 if (ps.sps_list[pps->sps_id]) {
228 sps = (const HEVCSPS*)ps.sps_list[pps->sps_id]->data;
229 }
230 }
231
232 if (vps && pps && sps) {
233 uint8_t *data;
234 int data_size;
235
236 if ((ret = h2645_ps_to_nalu(vps->data, vps->data_size, &vps_data, &vps_data_size)) < 0 ||
237 (ret = h2645_ps_to_nalu(sps->data, sps->data_size, &sps_data, &sps_data_size)) < 0 ||
238 (ret = h2645_ps_to_nalu(pps->data, pps->data_size, &pps_data, &pps_data_size)) < 0) {
239 goto done;
240 }
241
242 data_size = vps_data_size + sps_data_size + pps_data_size;
243 data = av_mallocz(data_size);
244 if (!data) {
245 ret = AVERROR(ENOMEM);
246 goto done;
247 }
248
249 memcpy(data , vps_data, vps_data_size);
250 memcpy(data + vps_data_size , sps_data, sps_data_size);
251 memcpy(data + vps_data_size + sps_data_size, pps_data, pps_data_size);
252
253 ff_AMediaFormat_setBuffer(format, "csd-0", data, data_size);
254
255 av_freep(&data);
256 } else {
257 av_log(avctx, AV_LOG_ERROR, "Could not extract VPS/PPS/SPS from extradata");
258 ret = AVERROR_INVALIDDATA;
259 }
260
261 done:
262 ff_hevc_ps_uninit(&ps);
263
264 av_freep(&vps_data);
265 av_freep(&sps_data);
266 av_freep(&pps_data);
267
268 return ret;
269 }
270 #endif
271
272 #if CONFIG_MPEG2_MEDIACODEC_DECODER || \
273 CONFIG_MPEG4_MEDIACODEC_DECODER || \
274 CONFIG_VP8_MEDIACODEC_DECODER || \
275 CONFIG_VP9_MEDIACODEC_DECODER
common_set_extradata(AVCodecContext * avctx,FFAMediaFormat * format)276 static int common_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
277 {
278 int ret = 0;
279
280 if (avctx->extradata) {
281 ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size);
282 }
283
284 return ret;
285 }
286 #endif
287
mediacodec_decode_init(AVCodecContext * avctx)288 static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
289 {
290 int ret;
291 int sdk_int;
292
293 const char *codec_mime = NULL;
294
295 FFAMediaFormat *format = NULL;
296 MediaCodecH264DecContext *s = avctx->priv_data;
297
298 format = ff_AMediaFormat_new();
299 if (!format) {
300 av_log(avctx, AV_LOG_ERROR, "Failed to create media format\n");
301 ret = AVERROR_EXTERNAL;
302 goto done;
303 }
304
305 switch (avctx->codec_id) {
306 #if CONFIG_H264_MEDIACODEC_DECODER
307 case AV_CODEC_ID_H264:
308 codec_mime = "video/avc";
309
310 ret = h264_set_extradata(avctx, format);
311 if (ret < 0)
312 goto done;
313 break;
314 #endif
315 #if CONFIG_HEVC_MEDIACODEC_DECODER
316 case AV_CODEC_ID_HEVC:
317 codec_mime = "video/hevc";
318
319 ret = hevc_set_extradata(avctx, format);
320 if (ret < 0)
321 goto done;
322 break;
323 #endif
324 #if CONFIG_MPEG2_MEDIACODEC_DECODER
325 case AV_CODEC_ID_MPEG2VIDEO:
326 codec_mime = "video/mpeg2";
327
328 ret = common_set_extradata(avctx, format);
329 if (ret < 0)
330 goto done;
331 break;
332 #endif
333 #if CONFIG_MPEG4_MEDIACODEC_DECODER
334 case AV_CODEC_ID_MPEG4:
335 codec_mime = "video/mp4v-es",
336
337 ret = common_set_extradata(avctx, format);
338 if (ret < 0)
339 goto done;
340 break;
341 #endif
342 #if CONFIG_VP8_MEDIACODEC_DECODER
343 case AV_CODEC_ID_VP8:
344 codec_mime = "video/x-vnd.on2.vp8";
345
346 ret = common_set_extradata(avctx, format);
347 if (ret < 0)
348 goto done;
349 break;
350 #endif
351 #if CONFIG_VP9_MEDIACODEC_DECODER
352 case AV_CODEC_ID_VP9:
353 codec_mime = "video/x-vnd.on2.vp9";
354
355 ret = common_set_extradata(avctx, format);
356 if (ret < 0)
357 goto done;
358 break;
359 #endif
360 default:
361 av_assert0(0);
362 }
363
364 ff_AMediaFormat_setString(format, "mime", codec_mime);
365 ff_AMediaFormat_setInt32(format, "width", avctx->width);
366 ff_AMediaFormat_setInt32(format, "height", avctx->height);
367
368 s->ctx = av_mallocz(sizeof(*s->ctx));
369 if (!s->ctx) {
370 av_log(avctx, AV_LOG_ERROR, "Failed to allocate MediaCodecDecContext\n");
371 ret = AVERROR(ENOMEM);
372 goto done;
373 }
374
375 s->ctx->delay_flush = s->delay_flush;
376
377 if ((ret = ff_mediacodec_dec_init(avctx, s->ctx, codec_mime, format)) < 0) {
378 s->ctx = NULL;
379 goto done;
380 }
381
382 av_log(avctx, AV_LOG_INFO,
383 "MediaCodec started successfully: codec = %s, ret = %d\n",
384 s->ctx->codec_name, ret);
385
386 sdk_int = ff_Build_SDK_INT(avctx);
387 if (sdk_int <= 23 &&
388 strcmp(s->ctx->codec_name, "OMX.amlogic.mpeg2.decoder.awesome") == 0) {
389 av_log(avctx, AV_LOG_INFO, "Enabling workaround for %s on API=%d\n",
390 s->ctx->codec_name, sdk_int);
391 s->amlogic_mpeg2_api23_workaround = 1;
392 }
393
394 done:
395 if (format) {
396 ff_AMediaFormat_delete(format);
397 }
398
399 if (ret < 0) {
400 mediacodec_decode_close(avctx);
401 }
402
403 return ret;
404 }
405
mediacodec_receive_frame(AVCodecContext * avctx,AVFrame * frame)406 static int mediacodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
407 {
408 MediaCodecH264DecContext *s = avctx->priv_data;
409 int ret;
410 ssize_t index;
411
412 /* In delay_flush mode, wait until the user has released or rendered
413 all retained frames. */
414 if (s->delay_flush && ff_mediacodec_dec_is_flushing(avctx, s->ctx)) {
415 if (!ff_mediacodec_dec_flush(avctx, s->ctx)) {
416 return AVERROR(EAGAIN);
417 }
418 }
419
420 /* poll for new frame */
421 ret = ff_mediacodec_dec_receive(avctx, s->ctx, frame, false);
422 if (ret != AVERROR(EAGAIN))
423 return ret;
424
425 /* feed decoder */
426 while (1) {
427 if (s->ctx->current_input_buffer < 0) {
428 /* poll for input space */
429 index = ff_AMediaCodec_dequeueInputBuffer(s->ctx->codec, 0);
430 if (index < 0) {
431 /* no space, block for an output frame to appear */
432 return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
433 }
434 s->ctx->current_input_buffer = index;
435 }
436
437 /* try to flush any buffered packet data */
438 if (s->buffered_pkt.size > 0) {
439 ret = ff_mediacodec_dec_send(avctx, s->ctx, &s->buffered_pkt, false);
440 if (ret >= 0) {
441 s->buffered_pkt.size -= ret;
442 s->buffered_pkt.data += ret;
443 if (s->buffered_pkt.size <= 0) {
444 av_packet_unref(&s->buffered_pkt);
445 } else {
446 av_log(avctx, AV_LOG_WARNING,
447 "could not send entire packet in single input buffer (%d < %d)\n",
448 ret, s->buffered_pkt.size+ret);
449 }
450 } else if (ret < 0 && ret != AVERROR(EAGAIN)) {
451 return ret;
452 }
453
454 if (s->amlogic_mpeg2_api23_workaround && s->buffered_pkt.size <= 0) {
455 /* fallthrough to fetch next packet regardless of input buffer space */
456 } else {
457 /* poll for space again */
458 continue;
459 }
460 }
461
462 /* fetch new packet or eof */
463 ret = ff_decode_get_packet(avctx, &s->buffered_pkt);
464 if (ret == AVERROR_EOF) {
465 AVPacket null_pkt = { 0 };
466 ret = ff_mediacodec_dec_send(avctx, s->ctx, &null_pkt, true);
467 if (ret < 0)
468 return ret;
469 return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
470 } else if (ret == AVERROR(EAGAIN) && s->ctx->current_input_buffer < 0) {
471 return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
472 } else if (ret < 0) {
473 return ret;
474 }
475 }
476
477 return AVERROR(EAGAIN);
478 }
479
mediacodec_decode_flush(AVCodecContext * avctx)480 static void mediacodec_decode_flush(AVCodecContext *avctx)
481 {
482 MediaCodecH264DecContext *s = avctx->priv_data;
483
484 av_packet_unref(&s->buffered_pkt);
485
486 ff_mediacodec_dec_flush(avctx, s->ctx);
487 }
488
489 static const AVCodecHWConfigInternal *mediacodec_hw_configs[] = {
490 &(const AVCodecHWConfigInternal) {
491 .public = {
492 .pix_fmt = AV_PIX_FMT_MEDIACODEC,
493 .methods = AV_CODEC_HW_CONFIG_METHOD_AD_HOC |
494 AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX,
495 .device_type = AV_HWDEVICE_TYPE_MEDIACODEC,
496 },
497 .hwaccel = NULL,
498 },
499 NULL
500 };
501
502 #define OFFSET(x) offsetof(MediaCodecH264DecContext, x)
503 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
504 static const AVOption ff_mediacodec_vdec_options[] = {
505 { "delay_flush", "Delay flush until hw output buffers are returned to the decoder",
506 OFFSET(delay_flush), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VD },
507 { NULL }
508 };
509
510 #define DECLARE_MEDIACODEC_VCLASS(short_name) \
511 static const AVClass ff_##short_name##_mediacodec_dec_class = { \
512 .class_name = #short_name "_mediacodec", \
513 .item_name = av_default_item_name, \
514 .option = ff_mediacodec_vdec_options, \
515 .version = LIBAVUTIL_VERSION_INT, \
516 };
517
518 #define DECLARE_MEDIACODEC_VDEC(short_name, full_name, codec_id, bsf) \
519 DECLARE_MEDIACODEC_VCLASS(short_name) \
520 AVCodec ff_##short_name##_mediacodec_decoder = { \
521 .name = #short_name "_mediacodec", \
522 .long_name = NULL_IF_CONFIG_SMALL(full_name " Android MediaCodec decoder"), \
523 .type = AVMEDIA_TYPE_VIDEO, \
524 .id = codec_id, \
525 .priv_class = &ff_##short_name##_mediacodec_dec_class, \
526 .priv_data_size = sizeof(MediaCodecH264DecContext), \
527 .init = mediacodec_decode_init, \
528 .receive_frame = mediacodec_receive_frame, \
529 .flush = mediacodec_decode_flush, \
530 .close = mediacodec_decode_close, \
531 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, \
532 .caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, \
533 .bsfs = bsf, \
534 .hw_configs = mediacodec_hw_configs, \
535 .wrapper_name = "mediacodec", \
536 }; \
537
538 #if CONFIG_H264_MEDIACODEC_DECODER
539 DECLARE_MEDIACODEC_VDEC(h264, "H.264", AV_CODEC_ID_H264, "h264_mp4toannexb")
540 #endif
541
542 #if CONFIG_HEVC_MEDIACODEC_DECODER
543 DECLARE_MEDIACODEC_VDEC(hevc, "H.265", AV_CODEC_ID_HEVC, "hevc_mp4toannexb")
544 #endif
545
546 #if CONFIG_MPEG2_MEDIACODEC_DECODER
547 DECLARE_MEDIACODEC_VDEC(mpeg2, "MPEG-2", AV_CODEC_ID_MPEG2VIDEO, NULL)
548 #endif
549
550 #if CONFIG_MPEG4_MEDIACODEC_DECODER
551 DECLARE_MEDIACODEC_VDEC(mpeg4, "MPEG-4", AV_CODEC_ID_MPEG4, NULL)
552 #endif
553
554 #if CONFIG_VP8_MEDIACODEC_DECODER
555 DECLARE_MEDIACODEC_VDEC(vp8, "VP8", AV_CODEC_ID_VP8, NULL)
556 #endif
557
558 #if CONFIG_VP9_MEDIACODEC_DECODER
559 DECLARE_MEDIACODEC_VDEC(vp9, "VP9", AV_CODEC_ID_VP9, NULL)
560 #endif
561