/* * - CrystalHD decoder module - * * Copyright(C) 2010,2011 Philip Langdale * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* * - Principles of Operation - * * The CrystalHD decoder operates at the bitstream level - which is an even * higher level than the decoding hardware you typically see in modern GPUs. * This means it has a very simple interface, in principle. You feed demuxed * packets in one end and get decoded picture (fields/frames) out the other. * * Of course, nothing is ever that simple. Due, at the very least, to b-frame * dependencies in the supported formats, the hardware has a delay between * when a packet goes in, and when a picture comes out. Furthermore, this delay * is not just a function of time, but also one of the dependency on additional * frames being fed into the decoder to satisfy the b-frame dependencies. * * As such, a pipeline will build up that is roughly equivalent to the required * DPB for the file being played. If that was all it took, things would still * be simple - so, of course, it isn't. * * The hardware has a way of indicating that a picture is ready to be copied out, * but this is unreliable - and sometimes the attempt will still fail so, based * on testing, the code will wait until 3 pictures are ready before starting * to copy out - and this has the effect of extending the pipeline. * * Finally, while it is tempting to say that once the decoder starts outputing * frames, the software should never fail to return a frame from a decode(), * this is a hard assertion to make, because the stream may switch between * differently encoded content (number of b-frames, interlacing, etc) which * might require a longer pipeline than before. If that happened, you could * deadlock trying to retrieve a frame that can't be decoded without feeding * in additional packets. * * As such, the code will return in the event that a picture cannot be copied * out, leading to an increase in the length of the pipeline. This in turn, * means we have to be sensitive to the time it takes to decode a picture; * We do not want to give up just because the hardware needed a little more * time to prepare the picture! For this reason, there are delays included * in the decode() path that ensure that, under normal conditions, the hardware * will only fail to return a frame if it really needs additional packets to * complete the decoding. * * Finally, to be explicit, we do not want the pipeline to grow without bound * for two reasons: 1) The hardware can only buffer a finite number of packets, * and 2) The client application may not be able to cope with arbitrarily long * delays in the video path relative to the audio path. For example. MPlayer * can only handle a 20 picture delay (although this is arbitrary, and needs * to be extended to fully support the CrystalHD where the delay could be up * to 32 pictures - consider PAFF H.264 content with 16 b-frames). */ /***************************************************************************** * Includes ****************************************************************************/ #define _XOPEN_SOURCE 600 #include #include #include #include #include #include #include #include "avcodec.h" #include "h264.h" #include "libavutil/imgutils.h" #include "libavutil/intreadwrite.h" /** Timeout parameter passed to DtsProcOutput() in us */ #define OUTPUT_PROC_TIMEOUT 50 /** Step between fake timestamps passed to hardware in units of 100ns */ #define TIMESTAMP_UNIT 100000 /** Initial value in us of the wait in decode() */ #define BASE_WAIT 10000 /** Increment in us to adjust wait in decode() */ #define WAIT_UNIT 1000 /***************************************************************************** * Module private data ****************************************************************************/ typedef enum { RET_ERROR = -1, RET_OK = 0, RET_COPY_AGAIN = 1, RET_SKIP_NEXT_COPY = 2, RET_COPY_NEXT_FIELD = 3, } CopyRet; typedef struct OpaqueList { struct OpaqueList *next; uint64_t fake_timestamp; uint64_t reordered_opaque; uint8_t pic_type; } OpaqueList; typedef struct { AVCodecContext *avctx; AVFrame pic; HANDLE dev; AVCodecParserContext *parser; uint8_t is_70012; uint8_t *sps_pps_buf; uint32_t sps_pps_size; uint8_t is_nal; uint8_t output_ready; uint8_t need_second_field; uint8_t skip_next_output; uint64_t decode_wait; uint64_t last_picture; OpaqueList *head; OpaqueList *tail; } CHDContext; /***************************************************************************** * Helper functions ****************************************************************************/ static inline BC_MEDIA_SUBTYPE id2subtype(CHDContext *priv, enum CodecID id) { switch (id) { case CODEC_ID_MPEG4: return BC_MSUBTYPE_DIVX; case CODEC_ID_MSMPEG4V3: return BC_MSUBTYPE_DIVX311; case CODEC_ID_MPEG2VIDEO: return BC_MSUBTYPE_MPEG2VIDEO; case CODEC_ID_VC1: return BC_MSUBTYPE_VC1; case CODEC_ID_WMV3: return BC_MSUBTYPE_WMV3; case CODEC_ID_H264: return priv->is_nal ? BC_MSUBTYPE_AVC1 : BC_MSUBTYPE_H264; default: return BC_MSUBTYPE_INVALID; } } static inline void print_frame_info(CHDContext *priv, BC_DTS_PROC_OUT *output) { av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffSz: %u\n", output->YbuffSz); av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffDoneSz: %u\n", output->YBuffDoneSz); av_log(priv->avctx, AV_LOG_VERBOSE, "\tUVBuffDoneSz: %u\n", output->UVBuffDoneSz); av_log(priv->avctx, AV_LOG_VERBOSE, "\tTimestamp: %"PRIu64"\n", output->PicInfo.timeStamp); av_log(priv->avctx, AV_LOG_VERBOSE, "\tPicture Number: %u\n", output->PicInfo.picture_number); av_log(priv->avctx, AV_LOG_VERBOSE, "\tWidth: %u\n", output->PicInfo.width); av_log(priv->avctx, AV_LOG_VERBOSE, "\tHeight: %u\n", output->PicInfo.height); av_log(priv->avctx, AV_LOG_VERBOSE, "\tChroma: 0x%03x\n", output->PicInfo.chroma_format); av_log(priv->avctx, AV_LOG_VERBOSE, "\tPulldown: %u\n", output->PicInfo.pulldown); av_log(priv->avctx, AV_LOG_VERBOSE, "\tFlags: 0x%08x\n", output->PicInfo.flags); av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrame Rate/Res: %u\n", output->PicInfo.frame_rate); av_log(priv->avctx, AV_LOG_VERBOSE, "\tAspect Ratio: %u\n", output->PicInfo.aspect_ratio); av_log(priv->avctx, AV_LOG_VERBOSE, "\tColor Primaries: %u\n", output->PicInfo.colour_primaries); av_log(priv->avctx, AV_LOG_VERBOSE, "\tMetaData: %u\n", output->PicInfo.picture_meta_payload); av_log(priv->avctx, AV_LOG_VERBOSE, "\tSession Number: %u\n", output->PicInfo.sess_num); av_log(priv->avctx, AV_LOG_VERBOSE, "\tycom: %u\n", output->PicInfo.ycom); av_log(priv->avctx, AV_LOG_VERBOSE, "\tCustom Aspect: %u\n", output->PicInfo.custom_aspect_ratio_width_height); av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrames to Drop: %u\n", output->PicInfo.n_drop); av_log(priv->avctx, AV_LOG_VERBOSE, "\tH264 Valid Fields: 0x%08x\n", output->PicInfo.other.h264.valid); } /***************************************************************************** * OpaqueList functions ****************************************************************************/ static uint64_t opaque_list_push(CHDContext *priv, uint64_t reordered_opaque, uint8_t pic_type) { OpaqueList *newNode = av_mallocz(sizeof (OpaqueList)); if (!newNode) { av_log(priv->avctx, AV_LOG_ERROR, "Unable to allocate new node in OpaqueList.\n"); return 0; } if (!priv->head) { newNode->fake_timestamp = TIMESTAMP_UNIT; priv->head = newNode; } else { newNode->fake_timestamp = priv->tail->fake_timestamp + TIMESTAMP_UNIT; priv->tail->next = newNode; } priv->tail = newNode; newNode->reordered_opaque = reordered_opaque; newNode->pic_type = pic_type; return newNode->fake_timestamp; } /* * The OpaqueList is built in decode order, while elements will be removed * in presentation order. If frames are reordered, this means we must be * able to remove elements that are not the first element. */ static uint8_t opaque_list_pop(CHDContext *priv, uint64_t fake_timestamp, uint64_t *reordered_opaque, uint8_t *pic_type) { OpaqueList *node = priv->head; if (!priv->head) { av_log(priv->avctx, AV_LOG_ERROR, "CrystalHD: Attempted to query non-existent timestamps.\n"); return FALSE; } /* * The first element is special-cased because we have to manipulate * the head pointer rather than the previous element in the list. */ if (priv->head->fake_timestamp == fake_timestamp) { *reordered_opaque = node->reordered_opaque; *pic_type = node->pic_type; priv->head = node->next; av_free(node); if (!priv->head->next) priv->tail = priv->head; return TRUE; } /* * The list is processed at arm's length so that we have the * previous element available to rewrite its next pointer. */ while (node->next) { OpaqueList *next = node->next; if (next->fake_timestamp == fake_timestamp) { *reordered_opaque = node->reordered_opaque; *pic_type = node->pic_type; node->next = next->next; av_free(next); if (!node->next) priv->tail = node; return TRUE; } else { node = next; } } av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Couldn't match fake_timestamp.\n"); return FALSE; } /***************************************************************************** * Video decoder API function definitions ****************************************************************************/ static void flush(AVCodecContext *avctx) { CHDContext *priv = avctx->priv_data; avctx->has_b_frames = 0; priv->last_picture = -1; priv->output_ready = 0; priv->need_second_field = 0; priv->skip_next_output = 0; priv->decode_wait = BASE_WAIT; if (priv->pic.data[0]) avctx->release_buffer(avctx, &priv->pic); /* Flush mode 4 flushes all software and hardware buffers. */ DtsFlushInput(priv->dev, 4); } static av_cold int uninit(AVCodecContext *avctx) { CHDContext *priv = avctx->priv_data; HANDLE device; device = priv->dev; DtsStopDecoder(device); DtsCloseDecoder(device); DtsDeviceClose(device); av_parser_close(priv->parser); av_free(priv->sps_pps_buf); if (priv->pic.data[0]) avctx->release_buffer(avctx, &priv->pic); if (priv->head) { OpaqueList *node = priv->head; while (node) { OpaqueList *next = node->next; av_free(node); node = next; } } return 0; } static av_cold int init(AVCodecContext *avctx) { CHDContext* priv; BC_STATUS ret; BC_INFO_CRYSTAL version; BC_INPUT_FORMAT format = { .FGTEnable = FALSE, .Progressive = TRUE, .OptFlags = 0x80000000 | vdecFrameRate59_94 | 0x40, .width = avctx->width, .height = avctx->height, }; BC_MEDIA_SUBTYPE subtype; uint32_t mode = DTS_PLAYBACK_MODE | DTS_LOAD_FILE_PLAY_FW | DTS_SKIP_TX_CHK_CPB | DTS_PLAYBACK_DROP_RPT_MODE | DTS_SINGLE_THREADED_MODE | DTS_DFLT_RESOLUTION(vdecRESOLUTION_1080p23_976); av_log(avctx, AV_LOG_VERBOSE, "CrystalHD Init for %s\n", avctx->codec->name); avctx->pix_fmt = PIX_FMT_YUYV422; /* Initialize the library */ priv = avctx->priv_data; priv->avctx = avctx; priv->is_nal = avctx->extradata_size > 0 && *(avctx->extradata) == 1; priv->last_picture = -1; priv->decode_wait = BASE_WAIT; subtype = id2subtype(priv, avctx->codec->id); switch (subtype) { case BC_MSUBTYPE_AVC1: { uint8_t *dummy_p; int dummy_int; AVBitStreamFilterContext *bsfc; uint32_t orig_data_size = avctx->extradata_size; uint8_t *orig_data = av_malloc(orig_data_size); if (!orig_data) { av_log(avctx, AV_LOG_ERROR, "Failed to allocate copy of extradata\n"); return AVERROR(ENOMEM); } memcpy(orig_data, avctx->extradata, orig_data_size); bsfc = av_bitstream_filter_init("h264_mp4toannexb"); if (!bsfc) { av_log(avctx, AV_LOG_ERROR, "Cannot open the h264_mp4toannexb BSF!\n"); av_free(orig_data); return AVERROR_BSF_NOT_FOUND; } av_bitstream_filter_filter(bsfc, avctx, NULL, &dummy_p, &dummy_int, NULL, 0, 0); av_bitstream_filter_close(bsfc); priv->sps_pps_buf = avctx->extradata; priv->sps_pps_size = avctx->extradata_size; avctx->extradata = orig_data; avctx->extradata_size = orig_data_size; format.pMetaData = priv->sps_pps_buf; format.metaDataSz = priv->sps_pps_size; format.startCodeSz = (avctx->extradata[4] & 0x03) + 1; } break; case BC_MSUBTYPE_H264: format.startCodeSz = 4; // Fall-through case BC_MSUBTYPE_VC1: case BC_MSUBTYPE_WVC1: case BC_MSUBTYPE_WMV3: case BC_MSUBTYPE_WMVA: case BC_MSUBTYPE_MPEG2VIDEO: case BC_MSUBTYPE_DIVX: case BC_MSUBTYPE_DIVX311: format.pMetaData = avctx->extradata; format.metaDataSz = avctx->extradata_size; break; default: av_log(avctx, AV_LOG_ERROR, "CrystalHD: Unknown codec name\n"); return AVERROR(EINVAL); } format.mSubtype = subtype; /* Get a decoder instance */ av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: starting up\n"); // Initialize the Link and Decoder devices ret = DtsDeviceOpen(&priv->dev, mode); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsDeviceOpen failed\n"); goto fail; } ret = DtsCrystalHDVersion(priv->dev, &version); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsCrystalHDVersion failed\n"); goto fail; } priv->is_70012 = version.device == 0; if (priv->is_70012 && (subtype == BC_MSUBTYPE_DIVX || subtype == BC_MSUBTYPE_DIVX311)) { av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: BCM70012 doesn't support MPEG4-ASP/DivX/Xvid\n"); goto fail; } ret = DtsSetInputFormat(priv->dev, &format); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: SetInputFormat failed\n"); goto fail; } ret = DtsOpenDecoder(priv->dev, BC_STREAM_TYPE_ES); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsOpenDecoder failed\n"); goto fail; } ret = DtsSetColorSpace(priv->dev, OUTPUT_MODE422_YUY2); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsSetColorSpace failed\n"); goto fail; } ret = DtsStartDecoder(priv->dev); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartDecoder failed\n"); goto fail; } ret = DtsStartCapture(priv->dev); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartCapture failed\n"); goto fail; } if (avctx->codec->id == CODEC_ID_H264) { priv->parser = av_parser_init(avctx->codec->id); if (!priv->parser) av_log(avctx, AV_LOG_WARNING, "Cannot open the h.264 parser! Interlaced h.264 content " "will not be detected reliably.\n"); } av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Init complete.\n"); return 0; fail: uninit(avctx); return -1; } static inline CopyRet copy_frame(AVCodecContext *avctx, BC_DTS_PROC_OUT *output, void *data, int *data_size) { BC_STATUS ret; BC_DTS_STATUS decoder_status; uint8_t confirmed_interlaced; uint8_t ignore_interlaced; uint8_t interlaced; CHDContext *priv = avctx->priv_data; int64_t pkt_pts = AV_NOPTS_VALUE; uint8_t pic_type = 0; uint8_t bottom_field = (output->PicInfo.flags & VDEC_FLAG_BOTTOMFIELD) == VDEC_FLAG_BOTTOMFIELD; uint8_t bottom_first = !!(output->PicInfo.flags & VDEC_FLAG_BOTTOM_FIRST); int width = output->PicInfo.width; int height = output->PicInfo.height; int bwidth; uint8_t *src = output->Ybuff; int sStride; uint8_t *dst; int dStride; if (output->PicInfo.timeStamp != 0) { uint8_t pop_ret; pop_ret = opaque_list_pop(priv, output->PicInfo.timeStamp, &pkt_pts, &pic_type); if (!pop_ret) { /* * We will encounter a situation where a timestamp cannot be * popped if a second field is being returned. In this case, * each field has the same timestamp and the first one will * cause it to be popped. To keep subsequent calculations * simple, pic_type should be set a FIELD value - doesn't * matter which, but I chose BOTTOM. */ pic_type = PICT_BOTTOM_FIELD; } av_log(avctx, AV_LOG_VERBOSE, "output \"pts\": %"PRIu64"\n", output->PicInfo.timeStamp); av_log(avctx, AV_LOG_VERBOSE, "output picture type %d\n", pic_type); } ret = DtsGetDriverStatus(priv->dev, &decoder_status); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed: %u\n", ret); return RET_ERROR; } /* * If we're expecting a second field, or we know that the next * picture has the same number as the current picture, then we're * definitely interlaced. * * Note that this test can return false negatives if the hardware * hasn't decoded the next picture or if there is a corruption in * the stream. (In either case a 0 will be returned for the next * picture number) */ confirmed_interlaced = ((decoder_status.picNumFlags & ~0x40000000) == output->PicInfo.picture_number) || priv->need_second_field; /* * If we got a false negative for confirmed_interlaced on the first field, * we will realise our mistake here when we see that the picture number is that * of the previous picture. We cannot recover the frame and should discard the * second field to keep the correct number of output frames. */ if (output->PicInfo.picture_number == priv->last_picture && !priv->need_second_field) { av_log(avctx, AV_LOG_WARNING, "Incorrectly guessed progressie frame. Discarding second field\n"); /* Returning without providing a picture. */ return RET_OK; } /* * Testing has, so far, shown that we can't trust the interlaced flag for * H.264 content when VDEC_FLAG_UNKNOWN_SRC is set. */ ignore_interlaced = avctx->codec->id == CODEC_ID_H264 && (output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) && (pic_type == 0 || pic_type == PICT_FRAME || !confirmed_interlaced); interlaced = (output->PicInfo.flags & VDEC_FLAG_INTERLACED_SRC) && (!ignore_interlaced || confirmed_interlaced); if (ignore_interlaced && (decoder_status.picNumFlags & ~0x40000000) == 0) { av_log(avctx, AV_LOG_WARNING, "Next picture number unknown. Assuming progressive frame.\n"); } av_log(avctx, AV_LOG_VERBOSE, "Interlaced state: %d | ignore_interlaced %d\n", interlaced, ignore_interlaced); if (priv->pic.data[0] && !priv->need_second_field) avctx->release_buffer(avctx, &priv->pic); priv->need_second_field = interlaced && !priv->need_second_field; priv->pic.buffer_hints = FF_BUFFER_HINTS_VALID | FF_BUFFER_HINTS_PRESERVE | FF_BUFFER_HINTS_REUSABLE; if (!priv->pic.data[0]) { if (avctx->get_buffer(avctx, &priv->pic) < 0) { av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return RET_ERROR; } } bwidth = av_image_get_linesize(avctx->pix_fmt, width, 0); if (priv->is_70012) { int pStride; if (width <= 720) pStride = 720; else if (width <= 1280) pStride = 1280; else if (width <= 1080) pStride = 1080; sStride = av_image_get_linesize(avctx->pix_fmt, pStride, 0); } else { sStride = bwidth; } dStride = priv->pic.linesize[0]; dst = priv->pic.data[0]; av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Copying out frame\n"); if (interlaced) { int dY = 0; int sY = 0; height /= 2; if (bottom_field) { av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: bottom field\n"); dY = 1; } else { av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: top field\n"); dY = 0; } for (sY = 0; sY < height; dY++, sY++) { memcpy(&(dst[dY * dStride]), &(src[sY * sStride]), bwidth); dY++; } } else { av_image_copy_plane(dst, dStride, src, sStride, bwidth, height); } priv->pic.interlaced_frame = interlaced; if (interlaced) priv->pic.top_field_first = !bottom_first; priv->pic.pkt_pts = pkt_pts; if (!priv->need_second_field) { *data_size = sizeof(AVFrame); *(AVFrame *)data = priv->pic; } /* * Two types of PAFF content have been observed. One form causes the * hardware to return a field pair and the other individual fields, * even though the input is always individual fields. We must skip * copying on the next decode() call to maintain pipeline length in * the first case. */ if (!interlaced && (output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) && (pic_type == PICT_TOP_FIELD || pic_type == PICT_BOTTOM_FIELD)) { av_log(priv->avctx, AV_LOG_VERBOSE, "Fieldpair from two packets.\n"); return RET_SKIP_NEXT_COPY; } /* * Testing has shown that in all cases where we don't want to return the * full frame immediately, VDEC_FLAG_UNKNOWN_SRC is set. */ return priv->need_second_field && !(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) ? RET_COPY_NEXT_FIELD : RET_OK; } static inline CopyRet receive_frame(AVCodecContext *avctx, void *data, int *data_size) { BC_STATUS ret; BC_DTS_PROC_OUT output = { .PicInfo.width = avctx->width, .PicInfo.height = avctx->height, }; CHDContext *priv = avctx->priv_data; HANDLE dev = priv->dev; *data_size = 0; // Request decoded data from the driver ret = DtsProcOutputNoCopy(dev, OUTPUT_PROC_TIMEOUT, &output); if (ret == BC_STS_FMT_CHANGE) { av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Initial format change\n"); avctx->width = output.PicInfo.width; avctx->height = output.PicInfo.height; return RET_COPY_AGAIN; } else if (ret == BC_STS_SUCCESS) { int copy_ret = -1; if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) { if (priv->last_picture == -1) { /* * Init to one less, so that the incrementing code doesn't * need to be special-cased. */ priv->last_picture = output.PicInfo.picture_number - 1; } if (avctx->codec->id == CODEC_ID_MPEG4 && output.PicInfo.timeStamp == 0) { av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Not returning packed frame twice.\n"); priv->last_picture++; DtsReleaseOutputBuffs(dev, NULL, FALSE); return RET_COPY_AGAIN; } print_frame_info(priv, &output); if (priv->last_picture + 1 < output.PicInfo.picture_number) { av_log(avctx, AV_LOG_WARNING, "CrystalHD: Picture Number discontinuity\n"); /* * Have we lost frames? If so, we need to shrink the * pipeline length appropriately. * * XXX: I have no idea what the semantics of this situation * are so I don't even know if we've lost frames or which * ones. * * In any case, only warn the first time. */ priv->last_picture = output.PicInfo.picture_number - 1; } copy_ret = copy_frame(avctx, &output, data, data_size); if (*data_size > 0) { avctx->has_b_frames--; priv->last_picture++; av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Pipeline length: %u\n", avctx->has_b_frames); } } else { /* * An invalid frame has been consumed. */ av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with " "invalid PIB\n"); avctx->has_b_frames--; copy_ret = RET_OK; } DtsReleaseOutputBuffs(dev, NULL, FALSE); return copy_ret; } else if (ret == BC_STS_BUSY) { return RET_COPY_AGAIN; } else { av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret); return RET_ERROR; } } static int decode(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt) { BC_STATUS ret; BC_DTS_STATUS decoder_status; CopyRet rec_ret; CHDContext *priv = avctx->priv_data; HANDLE dev = priv->dev; int len = avpkt->size; uint8_t pic_type = 0; av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_frame\n"); if (len) { int32_t tx_free = (int32_t)DtsTxFreeSize(dev); if (priv->parser) { uint8_t *pout = NULL; int psize = len; H264Context *h = priv->parser->priv_data; while (psize) { ret = av_parser_parse2(priv->parser, avctx, &pout, &psize, avpkt->data, len, avctx->pkt->pts, avctx->pkt->dts, len - psize); } av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: parser picture type %d\n", h->s.picture_structure); pic_type = h->s.picture_structure; } if (len < tx_free - 1024) { /* * Despite being notionally opaque, either libcrystalhd or * the hardware itself will mangle pts values that are too * small or too large. The docs claim it should be in units * of 100ns. Given that we're nominally dealing with a black * box on both sides, any transform we do has no guarantee of * avoiding mangling so we need to build a mapping to values * we know will not be mangled. */ uint64_t pts = opaque_list_push(priv, avctx->pkt->pts, pic_type); if (!pts) { return AVERROR(ENOMEM); } av_log(priv->avctx, AV_LOG_VERBOSE, "input \"pts\": %"PRIu64"\n", pts); ret = DtsProcInput(dev, avpkt->data, len, pts, 0); if (ret == BC_STS_BUSY) { av_log(avctx, AV_LOG_WARNING, "CrystalHD: ProcInput returned busy\n"); usleep(BASE_WAIT); return AVERROR(EBUSY); } else if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcInput failed: %u\n", ret); return -1; } avctx->has_b_frames++; } else { av_log(avctx, AV_LOG_WARNING, "CrystalHD: Input buffer full\n"); len = 0; // We didn't consume any bytes. } } else { av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n"); } if (priv->skip_next_output) { av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Skipping next output.\n"); priv->skip_next_output = 0; avctx->has_b_frames--; return len; } ret = DtsGetDriverStatus(dev, &decoder_status); if (ret != BC_STS_SUCCESS) { av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n"); return -1; } /* * No frames ready. Don't try to extract. * * Empirical testing shows that ReadyListCount can be a damn lie, * and ProcOut still fails when count > 0. The same testing showed * that two more iterations were needed before ProcOutput would * succeed. */ if (priv->output_ready < 2) { if (decoder_status.ReadyListCount != 0) priv->output_ready++; usleep(BASE_WAIT); av_log(avctx, AV_LOG_INFO, "CrystalHD: Filling pipeline.\n"); return len; } else if (decoder_status.ReadyListCount == 0) { /* * After the pipeline is established, if we encounter a lack of frames * that probably means we're not giving the hardware enough time to * decode them, so start increasing the wait time at the end of a * decode call. */ usleep(BASE_WAIT); priv->decode_wait += WAIT_UNIT; av_log(avctx, AV_LOG_INFO, "CrystalHD: No frames ready. Returning\n"); return len; } do { rec_ret = receive_frame(avctx, data, data_size); if (rec_ret == RET_OK && *data_size == 0) { /* * This case is for when the encoded fields are stored * separately and we get a separate avpkt for each one. To keep * the pipeline stable, we should return nothing and wait for * the next time round to grab the second field. * H.264 PAFF is an example of this. */ av_log(avctx, AV_LOG_VERBOSE, "Returning after first field.\n"); avctx->has_b_frames--; } else if (rec_ret == RET_COPY_NEXT_FIELD) { /* * This case is for when the encoded fields are stored in a * single avpkt but the hardware returns then separately. Unless * we grab the second field before returning, we'll slip another * frame in the pipeline and if that happens a lot, we're sunk. * So we have to get that second field now. * Interlaced mpeg2 and vc1 are examples of this. */ av_log(avctx, AV_LOG_VERBOSE, "Trying to get second field.\n"); while (1) { usleep(priv->decode_wait); ret = DtsGetDriverStatus(dev, &decoder_status); if (ret == BC_STS_SUCCESS && decoder_status.ReadyListCount > 0) { rec_ret = receive_frame(avctx, data, data_size); if ((rec_ret == RET_OK && *data_size > 0) || rec_ret == RET_ERROR) break; } } av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Got second field.\n"); } else if (rec_ret == RET_SKIP_NEXT_COPY) { /* * Two input packets got turned into a field pair. Gawd. */ av_log(avctx, AV_LOG_VERBOSE, "Don't output on next decode call.\n"); priv->skip_next_output = 1; } /* * If rec_ret == RET_COPY_AGAIN, that means that either we just handled * a FMT_CHANGE event and need to go around again for the actual frame, * we got a busy status and need to try again, or we're dealing with * packed b-frames, where the hardware strangely returns the packed * p-frame twice. We choose to keep the second copy as it carries the * valid pts. */ } while (rec_ret == RET_COPY_AGAIN); usleep(priv->decode_wait); return len; } #if CONFIG_H264_CRYSTALHD_DECODER AVCodec ff_h264_crystalhd_decoder = { .name = "h264_crystalhd", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_H264, .priv_data_size = sizeof(CHDContext), .init = init, .close = uninit, .decode = decode, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .flush = flush, .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (CrystalHD acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE}, }; #endif #if CONFIG_MPEG2_CRYSTALHD_DECODER AVCodec ff_mpeg2_crystalhd_decoder = { .name = "mpeg2_crystalhd", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_MPEG2VIDEO, .priv_data_size = sizeof(CHDContext), .init = init, .close = uninit, .decode = decode, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .flush = flush, .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 Video (CrystalHD acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE}, }; #endif #if CONFIG_MPEG4_CRYSTALHD_DECODER AVCodec ff_mpeg4_crystalhd_decoder = { .name = "mpeg4_crystalhd", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_MPEG4, .priv_data_size = sizeof(CHDContext), .init = init, .close = uninit, .decode = decode, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .flush = flush, .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 (CrystalHD acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE}, }; #endif #if CONFIG_MSMPEG4_CRYSTALHD_DECODER AVCodec ff_msmpeg4_crystalhd_decoder = { .name = "msmpeg4_crystalhd", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_MSMPEG4V3, .priv_data_size = sizeof(CHDContext), .init = init, .close = uninit, .decode = decode, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .flush = flush, .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 Microsoft variant version 3 (CrystalHD acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE}, }; #endif #if CONFIG_VC1_CRYSTALHD_DECODER AVCodec ff_vc1_crystalhd_decoder = { .name = "vc1_crystalhd", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_VC1, .priv_data_size = sizeof(CHDContext), .init = init, .close = uninit, .decode = decode, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .flush = flush, .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 (CrystalHD acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE}, }; #endif #if CONFIG_WMV3_CRYSTALHD_DECODER AVCodec ff_wmv3_crystalhd_decoder = { .name = "wmv3_crystalhd", .type = AVMEDIA_TYPE_VIDEO, .id = CODEC_ID_WMV3, .priv_data_size = sizeof(CHDContext), .init = init, .close = uninit, .decode = decode, .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL, .flush = flush, .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 (CrystalHD acceleration)"), .pix_fmts = (const enum PixelFormat[]){PIX_FMT_YUYV422, PIX_FMT_NONE}, }; #endif