2 * - CrystalHD decoder module -
4 * Copyright(C) 2010,2011 Philip Langdale <ffmpeg.philipl@overt.org>
6 * This file is part of FFmpeg.
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.
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.
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
24 * - Principles of Operation -
26 * The CrystalHD decoder operates at the bitstream level - which is an even
27 * higher level than the decoding hardware you typically see in modern GPUs.
28 * This means it has a very simple interface, in principle. You feed demuxed
29 * packets in one end and get decoded picture (fields/frames) out the other.
31 * Of course, nothing is ever that simple. Due, at the very least, to b-frame
32 * dependencies in the supported formats, the hardware has a delay between
33 * when a packet goes in, and when a picture comes out. Furthermore, this delay
34 * is not just a function of time, but also one of the dependency on additional
35 * frames being fed into the decoder to satisfy the b-frame dependencies.
37 * As such, a pipeline will build up that is roughly equivalent to the required
38 * DPB for the file being played. If that was all it took, things would still
39 * be simple - so, of course, it isn't.
41 * The hardware has a way of indicating that a picture is ready to be copied out,
42 * but this is unreliable - and sometimes the attempt will still fail so, based
43 * on testing, the code will wait until 3 pictures are ready before starting
44 * to copy out - and this has the effect of extending the pipeline.
46 * Finally, while it is tempting to say that once the decoder starts outputting
47 * frames, the software should never fail to return a frame from a decode(),
48 * this is a hard assertion to make, because the stream may switch between
49 * differently encoded content (number of b-frames, interlacing, etc) which
50 * might require a longer pipeline than before. If that happened, you could
51 * deadlock trying to retrieve a frame that can't be decoded without feeding
52 * in additional packets.
54 * As such, the code will return in the event that a picture cannot be copied
55 * out, leading to an increase in the length of the pipeline. This in turn,
56 * means we have to be sensitive to the time it takes to decode a picture;
57 * We do not want to give up just because the hardware needed a little more
58 * time to prepare the picture! For this reason, there are delays included
59 * in the decode() path that ensure that, under normal conditions, the hardware
60 * will only fail to return a frame if it really needs additional packets to
61 * complete the decoding.
63 * Finally, to be explicit, we do not want the pipeline to grow without bound
64 * for two reasons: 1) The hardware can only buffer a finite number of packets,
65 * and 2) The client application may not be able to cope with arbitrarily long
66 * delays in the video path relative to the audio path. For example. MPlayer
67 * can only handle a 20 picture delay (although this is arbitrary, and needs
68 * to be extended to fully support the CrystalHD where the delay could be up
69 * to 32 pictures - consider PAFF H.264 content with 16 b-frames).
72 /*****************************************************************************
74 ****************************************************************************/
76 #define _XOPEN_SOURCE 600
82 #include <libcrystalhd/bc_dts_types.h>
83 #include <libcrystalhd/bc_dts_defs.h>
84 #include <libcrystalhd/libcrystalhd_if.h>
89 #include "libavutil/imgutils.h"
90 #include "libavutil/intreadwrite.h"
91 #include "libavutil/opt.h"
93 /** Timeout parameter passed to DtsProcOutput() in us */
94 #define OUTPUT_PROC_TIMEOUT 50
95 /** Step between fake timestamps passed to hardware in units of 100ns */
96 #define TIMESTAMP_UNIT 100000
97 /** Initial value in us of the wait in decode() */
98 #define BASE_WAIT 10000
99 /** Increment in us to adjust wait in decode() */
100 #define WAIT_UNIT 1000
103 /*****************************************************************************
104 * Module private data
105 ****************************************************************************/
111 RET_SKIP_NEXT_COPY = 2,
112 RET_COPY_NEXT_FIELD = 3,
115 typedef struct OpaqueList {
116 struct OpaqueList *next;
117 uint64_t fake_timestamp;
118 uint64_t reordered_opaque;
124 AVCodecContext *avctx;
128 uint8_t *orig_extradata;
129 uint32_t orig_extradata_size;
131 AVBitStreamFilterContext *bsfc;
132 AVCodecParserContext *parser;
135 uint8_t *sps_pps_buf;
136 uint32_t sps_pps_size;
138 uint8_t output_ready;
139 uint8_t need_second_field;
140 uint8_t skip_next_output;
141 uint64_t decode_wait;
143 uint64_t last_picture;
153 static const AVOption options[] = {
154 { "crystalhd_downscale_width",
155 "Turn on downscaling to the specified width",
156 offsetof(CHDContext, sWidth),
157 AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT32_MAX,
158 AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, },
163 /*****************************************************************************
165 ****************************************************************************/
167 static inline BC_MEDIA_SUBTYPE id2subtype(CHDContext *priv, enum AVCodecID id)
170 case AV_CODEC_ID_MPEG4:
171 return BC_MSUBTYPE_DIVX;
172 case AV_CODEC_ID_MSMPEG4V3:
173 return BC_MSUBTYPE_DIVX311;
174 case AV_CODEC_ID_MPEG2VIDEO:
175 return BC_MSUBTYPE_MPEG2VIDEO;
176 case AV_CODEC_ID_VC1:
177 return BC_MSUBTYPE_VC1;
178 case AV_CODEC_ID_WMV3:
179 return BC_MSUBTYPE_WMV3;
180 case AV_CODEC_ID_H264:
181 return priv->is_nal ? BC_MSUBTYPE_AVC1 : BC_MSUBTYPE_H264;
183 return BC_MSUBTYPE_INVALID;
187 static inline void print_frame_info(CHDContext *priv, BC_DTS_PROC_OUT *output)
189 av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffSz: %u\n", output->YbuffSz);
190 av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffDoneSz: %u\n",
191 output->YBuffDoneSz);
192 av_log(priv->avctx, AV_LOG_VERBOSE, "\tUVBuffDoneSz: %u\n",
193 output->UVBuffDoneSz);
194 av_log(priv->avctx, AV_LOG_VERBOSE, "\tTimestamp: %"PRIu64"\n",
195 output->PicInfo.timeStamp);
196 av_log(priv->avctx, AV_LOG_VERBOSE, "\tPicture Number: %u\n",
197 output->PicInfo.picture_number);
198 av_log(priv->avctx, AV_LOG_VERBOSE, "\tWidth: %u\n",
199 output->PicInfo.width);
200 av_log(priv->avctx, AV_LOG_VERBOSE, "\tHeight: %u\n",
201 output->PicInfo.height);
202 av_log(priv->avctx, AV_LOG_VERBOSE, "\tChroma: 0x%03x\n",
203 output->PicInfo.chroma_format);
204 av_log(priv->avctx, AV_LOG_VERBOSE, "\tPulldown: %u\n",
205 output->PicInfo.pulldown);
206 av_log(priv->avctx, AV_LOG_VERBOSE, "\tFlags: 0x%08x\n",
207 output->PicInfo.flags);
208 av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrame Rate/Res: %u\n",
209 output->PicInfo.frame_rate);
210 av_log(priv->avctx, AV_LOG_VERBOSE, "\tAspect Ratio: %u\n",
211 output->PicInfo.aspect_ratio);
212 av_log(priv->avctx, AV_LOG_VERBOSE, "\tColor Primaries: %u\n",
213 output->PicInfo.colour_primaries);
214 av_log(priv->avctx, AV_LOG_VERBOSE, "\tMetaData: %u\n",
215 output->PicInfo.picture_meta_payload);
216 av_log(priv->avctx, AV_LOG_VERBOSE, "\tSession Number: %u\n",
217 output->PicInfo.sess_num);
218 av_log(priv->avctx, AV_LOG_VERBOSE, "\tycom: %u\n",
219 output->PicInfo.ycom);
220 av_log(priv->avctx, AV_LOG_VERBOSE, "\tCustom Aspect: %u\n",
221 output->PicInfo.custom_aspect_ratio_width_height);
222 av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrames to Drop: %u\n",
223 output->PicInfo.n_drop);
224 av_log(priv->avctx, AV_LOG_VERBOSE, "\tH264 Valid Fields: 0x%08x\n",
225 output->PicInfo.other.h264.valid);
229 /*****************************************************************************
230 * OpaqueList functions
231 ****************************************************************************/
233 static uint64_t opaque_list_push(CHDContext *priv, uint64_t reordered_opaque,
236 OpaqueList *newNode = av_mallocz(sizeof (OpaqueList));
238 av_log(priv->avctx, AV_LOG_ERROR,
239 "Unable to allocate new node in OpaqueList.\n");
243 newNode->fake_timestamp = TIMESTAMP_UNIT;
244 priv->head = newNode;
246 newNode->fake_timestamp = priv->tail->fake_timestamp + TIMESTAMP_UNIT;
247 priv->tail->next = newNode;
249 priv->tail = newNode;
250 newNode->reordered_opaque = reordered_opaque;
251 newNode->pic_type = pic_type;
253 return newNode->fake_timestamp;
257 * The OpaqueList is built in decode order, while elements will be removed
258 * in presentation order. If frames are reordered, this means we must be
259 * able to remove elements that are not the first element.
261 * Returned node must be freed by caller.
263 static OpaqueList *opaque_list_pop(CHDContext *priv, uint64_t fake_timestamp)
265 OpaqueList *node = priv->head;
268 av_log(priv->avctx, AV_LOG_ERROR,
269 "CrystalHD: Attempted to query non-existent timestamps.\n");
274 * The first element is special-cased because we have to manipulate
275 * the head pointer rather than the previous element in the list.
277 if (priv->head->fake_timestamp == fake_timestamp) {
278 priv->head = node->next;
280 if (!priv->head->next)
281 priv->tail = priv->head;
288 * The list is processed at arm's length so that we have the
289 * previous element available to rewrite its next pointer.
292 OpaqueList *current = node->next;
293 if (current->fake_timestamp == fake_timestamp) {
294 node->next = current->next;
299 current->next = NULL;
306 av_log(priv->avctx, AV_LOG_VERBOSE,
307 "CrystalHD: Couldn't match fake_timestamp.\n");
312 /*****************************************************************************
313 * Video decoder API function definitions
314 ****************************************************************************/
316 static void flush(AVCodecContext *avctx)
318 CHDContext *priv = avctx->priv_data;
320 avctx->has_b_frames = 0;
321 priv->last_picture = -1;
322 priv->output_ready = 0;
323 priv->need_second_field = 0;
324 priv->skip_next_output = 0;
325 priv->decode_wait = BASE_WAIT;
327 if (priv->pic.data[0])
328 avctx->release_buffer(avctx, &priv->pic);
330 /* Flush mode 4 flushes all software and hardware buffers. */
331 DtsFlushInput(priv->dev, 4);
335 static av_cold int uninit(AVCodecContext *avctx)
337 CHDContext *priv = avctx->priv_data;
341 DtsStopDecoder(device);
342 DtsCloseDecoder(device);
343 DtsDeviceClose(device);
346 * Restore original extradata, so that if the decoder is
347 * reinitialised, the bitstream detection and filtering
348 * will work as expected.
350 if (priv->orig_extradata) {
351 av_free(avctx->extradata);
352 avctx->extradata = priv->orig_extradata;
353 avctx->extradata_size = priv->orig_extradata_size;
354 priv->orig_extradata = NULL;
355 priv->orig_extradata_size = 0;
358 av_parser_close(priv->parser);
360 av_bitstream_filter_close(priv->bsfc);
363 av_free(priv->sps_pps_buf);
365 if (priv->pic.data[0])
366 avctx->release_buffer(avctx, &priv->pic);
369 OpaqueList *node = priv->head;
371 OpaqueList *next = node->next;
381 static av_cold int init(AVCodecContext *avctx)
385 BC_INFO_CRYSTAL version;
386 BC_INPUT_FORMAT format = {
389 .OptFlags = 0x80000000 | vdecFrameRate59_94 | 0x40,
390 .width = avctx->width,
391 .height = avctx->height,
394 BC_MEDIA_SUBTYPE subtype;
396 uint32_t mode = DTS_PLAYBACK_MODE |
397 DTS_LOAD_FILE_PLAY_FW |
398 DTS_SKIP_TX_CHK_CPB |
399 DTS_PLAYBACK_DROP_RPT_MODE |
400 DTS_SINGLE_THREADED_MODE |
401 DTS_DFLT_RESOLUTION(vdecRESOLUTION_1080p23_976);
403 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD Init for %s\n",
406 avctx->pix_fmt = AV_PIX_FMT_YUYV422;
408 /* Initialize the library */
409 priv = avctx->priv_data;
411 priv->is_nal = avctx->extradata_size > 0 && *(avctx->extradata) == 1;
412 priv->last_picture = -1;
413 priv->decode_wait = BASE_WAIT;
415 subtype = id2subtype(priv, avctx->codec->id);
417 case BC_MSUBTYPE_AVC1:
422 /* Back up the extradata so it can be restored at close time. */
423 priv->orig_extradata = av_malloc(avctx->extradata_size);
424 if (!priv->orig_extradata) {
425 av_log(avctx, AV_LOG_ERROR,
426 "Failed to allocate copy of extradata\n");
427 return AVERROR(ENOMEM);
429 priv->orig_extradata_size = avctx->extradata_size;
430 memcpy(priv->orig_extradata, avctx->extradata, avctx->extradata_size);
432 priv->bsfc = av_bitstream_filter_init("h264_mp4toannexb");
434 av_log(avctx, AV_LOG_ERROR,
435 "Cannot open the h264_mp4toannexb BSF!\n");
436 return AVERROR_BSF_NOT_FOUND;
438 av_bitstream_filter_filter(priv->bsfc, avctx, NULL, &dummy_p,
439 &dummy_int, NULL, 0, 0);
441 subtype = BC_MSUBTYPE_H264;
443 case BC_MSUBTYPE_H264:
444 format.startCodeSz = 4;
446 case BC_MSUBTYPE_VC1:
447 case BC_MSUBTYPE_WVC1:
448 case BC_MSUBTYPE_WMV3:
449 case BC_MSUBTYPE_WMVA:
450 case BC_MSUBTYPE_MPEG2VIDEO:
451 case BC_MSUBTYPE_DIVX:
452 case BC_MSUBTYPE_DIVX311:
453 format.pMetaData = avctx->extradata;
454 format.metaDataSz = avctx->extradata_size;
457 av_log(avctx, AV_LOG_ERROR, "CrystalHD: Unknown codec name\n");
458 return AVERROR(EINVAL);
460 format.mSubtype = subtype;
463 format.bEnableScaling = 1;
464 format.ScalingParams.sWidth = priv->sWidth;
467 /* Get a decoder instance */
468 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: starting up\n");
469 // Initialize the Link and Decoder devices
470 ret = DtsDeviceOpen(&priv->dev, mode);
471 if (ret != BC_STS_SUCCESS) {
472 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsDeviceOpen failed\n");
476 ret = DtsCrystalHDVersion(priv->dev, &version);
477 if (ret != BC_STS_SUCCESS) {
478 av_log(avctx, AV_LOG_VERBOSE,
479 "CrystalHD: DtsCrystalHDVersion failed\n");
482 priv->is_70012 = version.device == 0;
484 if (priv->is_70012 &&
485 (subtype == BC_MSUBTYPE_DIVX || subtype == BC_MSUBTYPE_DIVX311)) {
486 av_log(avctx, AV_LOG_VERBOSE,
487 "CrystalHD: BCM70012 doesn't support MPEG4-ASP/DivX/Xvid\n");
491 ret = DtsSetInputFormat(priv->dev, &format);
492 if (ret != BC_STS_SUCCESS) {
493 av_log(avctx, AV_LOG_ERROR, "CrystalHD: SetInputFormat failed\n");
497 ret = DtsOpenDecoder(priv->dev, BC_STREAM_TYPE_ES);
498 if (ret != BC_STS_SUCCESS) {
499 av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsOpenDecoder failed\n");
503 ret = DtsSetColorSpace(priv->dev, OUTPUT_MODE422_YUY2);
504 if (ret != BC_STS_SUCCESS) {
505 av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsSetColorSpace failed\n");
508 ret = DtsStartDecoder(priv->dev);
509 if (ret != BC_STS_SUCCESS) {
510 av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartDecoder failed\n");
513 ret = DtsStartCapture(priv->dev);
514 if (ret != BC_STS_SUCCESS) {
515 av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartCapture failed\n");
519 if (avctx->codec->id == AV_CODEC_ID_H264) {
520 priv->parser = av_parser_init(avctx->codec->id);
522 av_log(avctx, AV_LOG_WARNING,
523 "Cannot open the h.264 parser! Interlaced h.264 content "
524 "will not be detected reliably.\n");
525 priv->parser->flags = PARSER_FLAG_COMPLETE_FRAMES;
527 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Init complete.\n");
537 static inline CopyRet copy_frame(AVCodecContext *avctx,
538 BC_DTS_PROC_OUT *output,
539 void *data, int *got_frame)
542 BC_DTS_STATUS decoder_status = { 0, };
543 uint8_t trust_interlaced;
546 CHDContext *priv = avctx->priv_data;
547 int64_t pkt_pts = AV_NOPTS_VALUE;
548 uint8_t pic_type = 0;
550 uint8_t bottom_field = (output->PicInfo.flags & VDEC_FLAG_BOTTOMFIELD) ==
551 VDEC_FLAG_BOTTOMFIELD;
552 uint8_t bottom_first = !!(output->PicInfo.flags & VDEC_FLAG_BOTTOM_FIRST);
554 int width = output->PicInfo.width;
555 int height = output->PicInfo.height;
557 uint8_t *src = output->Ybuff;
562 if (output->PicInfo.timeStamp != 0) {
563 OpaqueList *node = opaque_list_pop(priv, output->PicInfo.timeStamp);
565 pkt_pts = node->reordered_opaque;
566 pic_type = node->pic_type;
570 * We will encounter a situation where a timestamp cannot be
571 * popped if a second field is being returned. In this case,
572 * each field has the same timestamp and the first one will
573 * cause it to be popped. To keep subsequent calculations
574 * simple, pic_type should be set a FIELD value - doesn't
575 * matter which, but I chose BOTTOM.
577 pic_type = PICT_BOTTOM_FIELD;
579 av_log(avctx, AV_LOG_VERBOSE, "output \"pts\": %"PRIu64"\n",
580 output->PicInfo.timeStamp);
581 av_log(avctx, AV_LOG_VERBOSE, "output picture type %d\n",
585 ret = DtsGetDriverStatus(priv->dev, &decoder_status);
586 if (ret != BC_STS_SUCCESS) {
587 av_log(avctx, AV_LOG_ERROR,
588 "CrystalHD: GetDriverStatus failed: %u\n", ret);
593 * For most content, we can trust the interlaced flag returned
594 * by the hardware, but sometimes we can't. These are the
595 * conditions under which we can trust the flag:
597 * 1) It's not h.264 content
598 * 2) The UNKNOWN_SRC flag is not set
599 * 3) We know we're expecting a second field
600 * 4) The hardware reports this picture and the next picture
601 * have the same picture number.
603 * Note that there can still be interlaced content that will
604 * fail this check, if the hardware hasn't decoded the next
605 * picture or if there is a corruption in the stream. (In either
606 * case a 0 will be returned for the next picture number)
608 trust_interlaced = avctx->codec->id != AV_CODEC_ID_H264 ||
609 !(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) ||
610 priv->need_second_field ||
611 (decoder_status.picNumFlags & ~0x40000000) ==
612 output->PicInfo.picture_number;
615 * If we got a false negative for trust_interlaced on the first field,
616 * we will realise our mistake here when we see that the picture number is that
617 * of the previous picture. We cannot recover the frame and should discard the
618 * second field to keep the correct number of output frames.
620 if (output->PicInfo.picture_number == priv->last_picture && !priv->need_second_field) {
621 av_log(avctx, AV_LOG_WARNING,
622 "Incorrectly guessed progressive frame. Discarding second field\n");
623 /* Returning without providing a picture. */
627 interlaced = (output->PicInfo.flags & VDEC_FLAG_INTERLACED_SRC) &&
630 if (!trust_interlaced && (decoder_status.picNumFlags & ~0x40000000) == 0) {
631 av_log(avctx, AV_LOG_VERBOSE,
632 "Next picture number unknown. Assuming progressive frame.\n");
635 av_log(avctx, AV_LOG_VERBOSE, "Interlaced state: %d | trust_interlaced %d\n",
636 interlaced, trust_interlaced);
638 if (priv->pic.data[0] && !priv->need_second_field)
639 avctx->release_buffer(avctx, &priv->pic);
641 priv->need_second_field = interlaced && !priv->need_second_field;
643 priv->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE |
644 FF_BUFFER_HINTS_REUSABLE;
645 if (!priv->pic.data[0]) {
646 if (ff_get_buffer(avctx, &priv->pic) < 0) {
647 av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
652 bwidth = av_image_get_linesize(avctx->pix_fmt, width, 0);
653 if (priv->is_70012) {
658 else if (width <= 1280)
661 sStride = av_image_get_linesize(avctx->pix_fmt, pStride, 0);
666 dStride = priv->pic.linesize[0];
667 dst = priv->pic.data[0];
669 av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Copying out frame\n");
677 av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: bottom field\n");
680 av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: top field\n");
684 for (sY = 0; sY < height; dY++, sY++) {
685 memcpy(&(dst[dY * dStride]), &(src[sY * sStride]), bwidth);
689 av_image_copy_plane(dst, dStride, src, sStride, bwidth, height);
692 priv->pic.interlaced_frame = interlaced;
694 priv->pic.top_field_first = !bottom_first;
696 priv->pic.pkt_pts = pkt_pts;
698 if (!priv->need_second_field) {
700 *(AVFrame *)data = priv->pic;
704 * Two types of PAFF content have been observed. One form causes the
705 * hardware to return a field pair and the other individual fields,
706 * even though the input is always individual fields. We must skip
707 * copying on the next decode() call to maintain pipeline length in
710 if (!interlaced && (output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) &&
711 (pic_type == PICT_TOP_FIELD || pic_type == PICT_BOTTOM_FIELD)) {
712 av_log(priv->avctx, AV_LOG_VERBOSE, "Fieldpair from two packets.\n");
713 return RET_SKIP_NEXT_COPY;
717 * The logic here is purely based on empirical testing with samples.
718 * If we need a second field, it could come from a second input packet,
719 * or it could come from the same field-pair input packet at the current
720 * field. In the first case, we should return and wait for the next time
721 * round to get the second field, while in the second case, we should
722 * ask the decoder for it immediately.
724 * Testing has shown that we are dealing with the fieldpair -> two fields
725 * case if the VDEC_FLAG_UNKNOWN_SRC is not set or if the input picture
726 * type was PICT_FRAME (in this second case, the flag might still be set)
728 return priv->need_second_field &&
729 (!(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) ||
730 pic_type == PICT_FRAME) ?
731 RET_COPY_NEXT_FIELD : RET_OK;
735 static inline CopyRet receive_frame(AVCodecContext *avctx,
736 void *data, int *got_frame)
739 BC_DTS_PROC_OUT output = {
740 .PicInfo.width = avctx->width,
741 .PicInfo.height = avctx->height,
743 CHDContext *priv = avctx->priv_data;
744 HANDLE dev = priv->dev;
748 // Request decoded data from the driver
749 ret = DtsProcOutputNoCopy(dev, OUTPUT_PROC_TIMEOUT, &output);
750 if (ret == BC_STS_FMT_CHANGE) {
751 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Initial format change\n");
752 avctx->width = output.PicInfo.width;
753 avctx->height = output.PicInfo.height;
754 switch ( output.PicInfo.aspect_ratio ) {
755 case vdecAspectRatioSquare:
756 avctx->sample_aspect_ratio = (AVRational) { 1, 1};
758 case vdecAspectRatio12_11:
759 avctx->sample_aspect_ratio = (AVRational) { 12, 11};
761 case vdecAspectRatio10_11:
762 avctx->sample_aspect_ratio = (AVRational) { 10, 11};
764 case vdecAspectRatio16_11:
765 avctx->sample_aspect_ratio = (AVRational) { 16, 11};
767 case vdecAspectRatio40_33:
768 avctx->sample_aspect_ratio = (AVRational) { 40, 33};
770 case vdecAspectRatio24_11:
771 avctx->sample_aspect_ratio = (AVRational) { 24, 11};
773 case vdecAspectRatio20_11:
774 avctx->sample_aspect_ratio = (AVRational) { 20, 11};
776 case vdecAspectRatio32_11:
777 avctx->sample_aspect_ratio = (AVRational) { 32, 11};
779 case vdecAspectRatio80_33:
780 avctx->sample_aspect_ratio = (AVRational) { 80, 33};
782 case vdecAspectRatio18_11:
783 avctx->sample_aspect_ratio = (AVRational) { 18, 11};
785 case vdecAspectRatio15_11:
786 avctx->sample_aspect_ratio = (AVRational) { 15, 11};
788 case vdecAspectRatio64_33:
789 avctx->sample_aspect_ratio = (AVRational) { 64, 33};
791 case vdecAspectRatio160_99:
792 avctx->sample_aspect_ratio = (AVRational) {160, 99};
794 case vdecAspectRatio4_3:
795 avctx->sample_aspect_ratio = (AVRational) { 4, 3};
797 case vdecAspectRatio16_9:
798 avctx->sample_aspect_ratio = (AVRational) { 16, 9};
800 case vdecAspectRatio221_1:
801 avctx->sample_aspect_ratio = (AVRational) {221, 1};
804 return RET_COPY_AGAIN;
805 } else if (ret == BC_STS_SUCCESS) {
807 if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) {
808 if (priv->last_picture == -1) {
810 * Init to one less, so that the incrementing code doesn't
811 * need to be special-cased.
813 priv->last_picture = output.PicInfo.picture_number - 1;
816 if (avctx->codec->id == AV_CODEC_ID_MPEG4 &&
817 output.PicInfo.timeStamp == 0 && priv->bframe_bug) {
818 av_log(avctx, AV_LOG_VERBOSE,
819 "CrystalHD: Not returning packed frame twice.\n");
820 priv->last_picture++;
821 DtsReleaseOutputBuffs(dev, NULL, FALSE);
822 return RET_COPY_AGAIN;
825 print_frame_info(priv, &output);
827 if (priv->last_picture + 1 < output.PicInfo.picture_number) {
828 av_log(avctx, AV_LOG_WARNING,
829 "CrystalHD: Picture Number discontinuity\n");
831 * Have we lost frames? If so, we need to shrink the
832 * pipeline length appropriately.
834 * XXX: I have no idea what the semantics of this situation
835 * are so I don't even know if we've lost frames or which
838 * In any case, only warn the first time.
840 priv->last_picture = output.PicInfo.picture_number - 1;
843 copy_ret = copy_frame(avctx, &output, data, got_frame);
844 if (*got_frame > 0) {
845 avctx->has_b_frames--;
846 priv->last_picture++;
847 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Pipeline length: %u\n",
848 avctx->has_b_frames);
852 * An invalid frame has been consumed.
854 av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with "
856 avctx->has_b_frames--;
859 DtsReleaseOutputBuffs(dev, NULL, FALSE);
862 } else if (ret == BC_STS_BUSY) {
863 return RET_COPY_AGAIN;
865 av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret);
871 static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
874 BC_DTS_STATUS decoder_status = { 0, };
876 CHDContext *priv = avctx->priv_data;
877 HANDLE dev = priv->dev;
878 uint8_t *in_data = avpkt->data;
879 int len = avpkt->size;
881 uint8_t pic_type = 0;
883 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_frame\n");
885 if (avpkt->size == 7 && !priv->bframe_bug) {
887 * The use of a drop frame triggers the bug
889 av_log(avctx, AV_LOG_INFO,
890 "CrystalHD: Enabling work-around for packed b-frame bug\n");
891 priv->bframe_bug = 1;
892 } else if (avpkt->size == 8 && priv->bframe_bug) {
894 * Delay frames don't trigger the bug
896 av_log(avctx, AV_LOG_INFO,
897 "CrystalHD: Disabling work-around for packed b-frame bug\n");
898 priv->bframe_bug = 0;
902 int32_t tx_free = (int32_t)DtsTxFreeSize(dev);
908 ret = av_bitstream_filter_filter(priv->bsfc, avctx, NULL,
910 avpkt->data, len, 0);
918 H264Context *h = priv->parser->priv_data;
920 index = av_parser_parse2(priv->parser, avctx, &pout, &psize,
921 in_data, len, avctx->pkt->pts,
924 av_log(avctx, AV_LOG_WARNING,
925 "CrystalHD: Failed to parse h.264 packet to "
926 "detect interlacing.\n");
927 } else if (index != len) {
928 av_log(avctx, AV_LOG_WARNING,
929 "CrystalHD: Failed to parse h.264 packet "
930 "completely. Interlaced frames may be "
931 "incorrectly detected.\n");
933 av_log(avctx, AV_LOG_VERBOSE,
934 "CrystalHD: parser picture type %d\n",
935 h->picture_structure);
936 pic_type = h->picture_structure;
939 av_log(avctx, AV_LOG_WARNING,
940 "CrystalHD: mp4toannexb filter failed to filter "
941 "packet. Interlaced frames may be incorrectly "
946 if (len < tx_free - 1024) {
948 * Despite being notionally opaque, either libcrystalhd or
949 * the hardware itself will mangle pts values that are too
950 * small or too large. The docs claim it should be in units
951 * of 100ns. Given that we're nominally dealing with a black
952 * box on both sides, any transform we do has no guarantee of
953 * avoiding mangling so we need to build a mapping to values
954 * we know will not be mangled.
956 uint64_t pts = opaque_list_push(priv, avctx->pkt->pts, pic_type);
961 return AVERROR(ENOMEM);
963 av_log(priv->avctx, AV_LOG_VERBOSE,
964 "input \"pts\": %"PRIu64"\n", pts);
965 ret = DtsProcInput(dev, in_data, len, pts, 0);
969 if (ret == BC_STS_BUSY) {
970 av_log(avctx, AV_LOG_WARNING,
971 "CrystalHD: ProcInput returned busy\n");
973 return AVERROR(EBUSY);
974 } else if (ret != BC_STS_SUCCESS) {
975 av_log(avctx, AV_LOG_ERROR,
976 "CrystalHD: ProcInput failed: %u\n", ret);
979 avctx->has_b_frames++;
981 av_log(avctx, AV_LOG_WARNING, "CrystalHD: Input buffer full\n");
982 len = 0; // We didn't consume any bytes.
985 av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n");
988 if (priv->skip_next_output) {
989 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Skipping next output.\n");
990 priv->skip_next_output = 0;
991 avctx->has_b_frames--;
995 ret = DtsGetDriverStatus(dev, &decoder_status);
996 if (ret != BC_STS_SUCCESS) {
997 av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n");
1002 * No frames ready. Don't try to extract.
1004 * Empirical testing shows that ReadyListCount can be a damn lie,
1005 * and ProcOut still fails when count > 0. The same testing showed
1006 * that two more iterations were needed before ProcOutput would
1009 if (priv->output_ready < 2) {
1010 if (decoder_status.ReadyListCount != 0)
1011 priv->output_ready++;
1013 av_log(avctx, AV_LOG_INFO, "CrystalHD: Filling pipeline.\n");
1015 } else if (decoder_status.ReadyListCount == 0) {
1017 * After the pipeline is established, if we encounter a lack of frames
1018 * that probably means we're not giving the hardware enough time to
1019 * decode them, so start increasing the wait time at the end of a
1023 priv->decode_wait += WAIT_UNIT;
1024 av_log(avctx, AV_LOG_INFO, "CrystalHD: No frames ready. Returning\n");
1029 rec_ret = receive_frame(avctx, data, got_frame);
1030 if (rec_ret == RET_OK && *got_frame == 0) {
1032 * This case is for when the encoded fields are stored
1033 * separately and we get a separate avpkt for each one. To keep
1034 * the pipeline stable, we should return nothing and wait for
1035 * the next time round to grab the second field.
1036 * H.264 PAFF is an example of this.
1038 av_log(avctx, AV_LOG_VERBOSE, "Returning after first field.\n");
1039 avctx->has_b_frames--;
1040 } else if (rec_ret == RET_COPY_NEXT_FIELD) {
1042 * This case is for when the encoded fields are stored in a
1043 * single avpkt but the hardware returns then separately. Unless
1044 * we grab the second field before returning, we'll slip another
1045 * frame in the pipeline and if that happens a lot, we're sunk.
1046 * So we have to get that second field now.
1047 * Interlaced mpeg2 and vc1 are examples of this.
1049 av_log(avctx, AV_LOG_VERBOSE, "Trying to get second field.\n");
1051 usleep(priv->decode_wait);
1052 ret = DtsGetDriverStatus(dev, &decoder_status);
1053 if (ret == BC_STS_SUCCESS &&
1054 decoder_status.ReadyListCount > 0) {
1055 rec_ret = receive_frame(avctx, data, got_frame);
1056 if ((rec_ret == RET_OK && *got_frame > 0) ||
1057 rec_ret == RET_ERROR)
1061 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Got second field.\n");
1062 } else if (rec_ret == RET_SKIP_NEXT_COPY) {
1064 * Two input packets got turned into a field pair. Gawd.
1066 av_log(avctx, AV_LOG_VERBOSE,
1067 "Don't output on next decode call.\n");
1068 priv->skip_next_output = 1;
1071 * If rec_ret == RET_COPY_AGAIN, that means that either we just handled
1072 * a FMT_CHANGE event and need to go around again for the actual frame,
1073 * we got a busy status and need to try again, or we're dealing with
1074 * packed b-frames, where the hardware strangely returns the packed
1075 * p-frame twice. We choose to keep the second copy as it carries the
1078 } while (rec_ret == RET_COPY_AGAIN);
1079 usleep(priv->decode_wait);
1084 #if CONFIG_H264_CRYSTALHD_DECODER
1085 static AVClass h264_class = {
1087 av_default_item_name,
1089 LIBAVUTIL_VERSION_INT,
1092 AVCodec ff_h264_crystalhd_decoder = {
1093 .name = "h264_crystalhd",
1094 .type = AVMEDIA_TYPE_VIDEO,
1095 .id = AV_CODEC_ID_H264,
1096 .priv_data_size = sizeof(CHDContext),
1100 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1102 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (CrystalHD acceleration)"),
1103 .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
1104 .priv_class = &h264_class,
1108 #if CONFIG_MPEG2_CRYSTALHD_DECODER
1109 static AVClass mpeg2_class = {
1111 av_default_item_name,
1113 LIBAVUTIL_VERSION_INT,
1116 AVCodec ff_mpeg2_crystalhd_decoder = {
1117 .name = "mpeg2_crystalhd",
1118 .type = AVMEDIA_TYPE_VIDEO,
1119 .id = AV_CODEC_ID_MPEG2VIDEO,
1120 .priv_data_size = sizeof(CHDContext),
1124 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1126 .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 Video (CrystalHD acceleration)"),
1127 .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
1128 .priv_class = &mpeg2_class,
1132 #if CONFIG_MPEG4_CRYSTALHD_DECODER
1133 static AVClass mpeg4_class = {
1135 av_default_item_name,
1137 LIBAVUTIL_VERSION_INT,
1140 AVCodec ff_mpeg4_crystalhd_decoder = {
1141 .name = "mpeg4_crystalhd",
1142 .type = AVMEDIA_TYPE_VIDEO,
1143 .id = AV_CODEC_ID_MPEG4,
1144 .priv_data_size = sizeof(CHDContext),
1148 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1150 .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 (CrystalHD acceleration)"),
1151 .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
1152 .priv_class = &mpeg4_class,
1156 #if CONFIG_MSMPEG4_CRYSTALHD_DECODER
1157 static AVClass msmpeg4_class = {
1158 "msmpeg4_crystalhd",
1159 av_default_item_name,
1161 LIBAVUTIL_VERSION_INT,
1164 AVCodec ff_msmpeg4_crystalhd_decoder = {
1165 .name = "msmpeg4_crystalhd",
1166 .type = AVMEDIA_TYPE_VIDEO,
1167 .id = AV_CODEC_ID_MSMPEG4V3,
1168 .priv_data_size = sizeof(CHDContext),
1172 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
1174 .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 Microsoft variant version 3 (CrystalHD acceleration)"),
1175 .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
1176 .priv_class = &msmpeg4_class,
1180 #if CONFIG_VC1_CRYSTALHD_DECODER
1181 static AVClass vc1_class = {
1183 av_default_item_name,
1185 LIBAVUTIL_VERSION_INT,
1188 AVCodec ff_vc1_crystalhd_decoder = {
1189 .name = "vc1_crystalhd",
1190 .type = AVMEDIA_TYPE_VIDEO,
1191 .id = AV_CODEC_ID_VC1,
1192 .priv_data_size = sizeof(CHDContext),
1196 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1198 .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 (CrystalHD acceleration)"),
1199 .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
1200 .priv_class = &vc1_class,
1204 #if CONFIG_WMV3_CRYSTALHD_DECODER
1205 static AVClass wmv3_class = {
1207 av_default_item_name,
1209 LIBAVUTIL_VERSION_INT,
1212 AVCodec ff_wmv3_crystalhd_decoder = {
1213 .name = "wmv3_crystalhd",
1214 .type = AVMEDIA_TYPE_VIDEO,
1215 .id = AV_CODEC_ID_WMV3,
1216 .priv_data_size = sizeof(CHDContext),
1220 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
1222 .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 (CrystalHD acceleration)"),
1223 .pix_fmts = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
1224 .priv_class = &wmv3_class,