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  1. /*
  2.  * - CrystalHD decoder module -
  3.  *
  4.  * Copyright(C) 2010,2011 Philip Langdale <ffmpeg.philipl@overt.org>
  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. /*
  24.  * - Principles of Operation -
  25.  *
  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.
  30.  *
  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.
  36.  *
  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.
  40.  *
  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.
  45.  *
  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.
  53.  *
  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.
  62.  *
  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).
  70.  */
  71.  
  72. /*****************************************************************************
  73.  * Includes
  74.  ****************************************************************************/
  75.  
  76. #define _XOPEN_SOURCE 600
  77. #include <inttypes.h>
  78. #include <stdio.h>
  79. #include <stdlib.h>
  80.  
  81. #include <libcrystalhd/bc_dts_types.h>
  82. #include <libcrystalhd/bc_dts_defs.h>
  83. #include <libcrystalhd/libcrystalhd_if.h>
  84.  
  85. #include "avcodec.h"
  86. #include "h264.h"
  87. #include "internal.h"
  88. #include "libavutil/imgutils.h"
  89. #include "libavutil/intreadwrite.h"
  90. #include "libavutil/opt.h"
  91.  
  92. #if HAVE_UNISTD_H
  93. #include <unistd.h>
  94. #endif
  95.  
  96. /** Timeout parameter passed to DtsProcOutput() in us */
  97. #define OUTPUT_PROC_TIMEOUT 50
  98. /** Step between fake timestamps passed to hardware in units of 100ns */
  99. #define TIMESTAMP_UNIT 100000
  100. /** Initial value in us of the wait in decode() */
  101. #define BASE_WAIT 10000
  102. /** Increment in us to adjust wait in decode() */
  103. #define WAIT_UNIT 1000
  104.  
  105.  
  106. /*****************************************************************************
  107.  * Module private data
  108.  ****************************************************************************/
  109.  
  110. typedef enum {
  111.     RET_ERROR           = -1,
  112.     RET_OK              = 0,
  113.     RET_COPY_AGAIN      = 1,
  114.     RET_SKIP_NEXT_COPY  = 2,
  115.     RET_COPY_NEXT_FIELD = 3,
  116. } CopyRet;
  117.  
  118. typedef struct OpaqueList {
  119.     struct OpaqueList *next;
  120.     uint64_t fake_timestamp;
  121.     uint64_t reordered_opaque;
  122.     uint8_t pic_type;
  123. } OpaqueList;
  124.  
  125. typedef struct {
  126.     AVClass *av_class;
  127.     AVCodecContext *avctx;
  128.     AVFrame *pic;
  129.     HANDLE dev;
  130.  
  131.     uint8_t *orig_extradata;
  132.     uint32_t orig_extradata_size;
  133.  
  134.     AVBitStreamFilterContext *bsfc;
  135.     AVCodecParserContext *parser;
  136.  
  137.     uint8_t is_70012;
  138.     uint8_t *sps_pps_buf;
  139.     uint32_t sps_pps_size;
  140.     uint8_t is_nal;
  141.     uint8_t output_ready;
  142.     uint8_t need_second_field;
  143.     uint8_t skip_next_output;
  144.     uint64_t decode_wait;
  145.  
  146.     uint64_t last_picture;
  147.  
  148.     OpaqueList *head;
  149.     OpaqueList *tail;
  150.  
  151.     /* Options */
  152.     uint32_t sWidth;
  153.     uint8_t bframe_bug;
  154. } CHDContext;
  155.  
  156. static const AVOption options[] = {
  157.     { "crystalhd_downscale_width",
  158.       "Turn on downscaling to the specified width",
  159.       offsetof(CHDContext, sWidth),
  160.       AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT32_MAX,
  161.       AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM, },
  162.     { NULL, },
  163. };
  164.  
  165.  
  166. /*****************************************************************************
  167.  * Helper functions
  168.  ****************************************************************************/
  169.  
  170. static inline BC_MEDIA_SUBTYPE id2subtype(CHDContext *priv, enum AVCodecID id)
  171. {
  172.     switch (id) {
  173.     case AV_CODEC_ID_MPEG4:
  174.         return BC_MSUBTYPE_DIVX;
  175.     case AV_CODEC_ID_MSMPEG4V3:
  176.         return BC_MSUBTYPE_DIVX311;
  177.     case AV_CODEC_ID_MPEG2VIDEO:
  178.         return BC_MSUBTYPE_MPEG2VIDEO;
  179.     case AV_CODEC_ID_VC1:
  180.         return BC_MSUBTYPE_VC1;
  181.     case AV_CODEC_ID_WMV3:
  182.         return BC_MSUBTYPE_WMV3;
  183.     case AV_CODEC_ID_H264:
  184.         return priv->is_nal ? BC_MSUBTYPE_AVC1 : BC_MSUBTYPE_H264;
  185.     default:
  186.         return BC_MSUBTYPE_INVALID;
  187.     }
  188. }
  189.  
  190. static inline void print_frame_info(CHDContext *priv, BC_DTS_PROC_OUT *output)
  191. {
  192.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffSz: %u\n", output->YbuffSz);
  193.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tYBuffDoneSz: %u\n",
  194.            output->YBuffDoneSz);
  195.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tUVBuffDoneSz: %u\n",
  196.            output->UVBuffDoneSz);
  197.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tTimestamp: %"PRIu64"\n",
  198.            output->PicInfo.timeStamp);
  199.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tPicture Number: %u\n",
  200.            output->PicInfo.picture_number);
  201.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tWidth: %u\n",
  202.            output->PicInfo.width);
  203.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tHeight: %u\n",
  204.            output->PicInfo.height);
  205.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tChroma: 0x%03x\n",
  206.            output->PicInfo.chroma_format);
  207.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tPulldown: %u\n",
  208.            output->PicInfo.pulldown);
  209.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tFlags: 0x%08x\n",
  210.            output->PicInfo.flags);
  211.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrame Rate/Res: %u\n",
  212.            output->PicInfo.frame_rate);
  213.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tAspect Ratio: %u\n",
  214.            output->PicInfo.aspect_ratio);
  215.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tColor Primaries: %u\n",
  216.            output->PicInfo.colour_primaries);
  217.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tMetaData: %u\n",
  218.            output->PicInfo.picture_meta_payload);
  219.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tSession Number: %u\n",
  220.            output->PicInfo.sess_num);
  221.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tycom: %u\n",
  222.            output->PicInfo.ycom);
  223.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tCustom Aspect: %u\n",
  224.            output->PicInfo.custom_aspect_ratio_width_height);
  225.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tFrames to Drop: %u\n",
  226.            output->PicInfo.n_drop);
  227.     av_log(priv->avctx, AV_LOG_VERBOSE, "\tH264 Valid Fields: 0x%08x\n",
  228.            output->PicInfo.other.h264.valid);
  229. }
  230.  
  231.  
  232. /*****************************************************************************
  233.  * OpaqueList functions
  234.  ****************************************************************************/
  235.  
  236. static uint64_t opaque_list_push(CHDContext *priv, uint64_t reordered_opaque,
  237.                                  uint8_t pic_type)
  238. {
  239.     OpaqueList *newNode = av_mallocz(sizeof (OpaqueList));
  240.     if (!newNode) {
  241.         av_log(priv->avctx, AV_LOG_ERROR,
  242.                "Unable to allocate new node in OpaqueList.\n");
  243.         return 0;
  244.     }
  245.     if (!priv->head) {
  246.         newNode->fake_timestamp = TIMESTAMP_UNIT;
  247.         priv->head              = newNode;
  248.     } else {
  249.         newNode->fake_timestamp = priv->tail->fake_timestamp + TIMESTAMP_UNIT;
  250.         priv->tail->next        = newNode;
  251.     }
  252.     priv->tail = newNode;
  253.     newNode->reordered_opaque = reordered_opaque;
  254.     newNode->pic_type = pic_type;
  255.  
  256.     return newNode->fake_timestamp;
  257. }
  258.  
  259. /*
  260.  * The OpaqueList is built in decode order, while elements will be removed
  261.  * in presentation order. If frames are reordered, this means we must be
  262.  * able to remove elements that are not the first element.
  263.  *
  264.  * Returned node must be freed by caller.
  265.  */
  266. static OpaqueList *opaque_list_pop(CHDContext *priv, uint64_t fake_timestamp)
  267. {
  268.     OpaqueList *node = priv->head;
  269.  
  270.     if (!priv->head) {
  271.         av_log(priv->avctx, AV_LOG_ERROR,
  272.                "CrystalHD: Attempted to query non-existent timestamps.\n");
  273.         return NULL;
  274.     }
  275.  
  276.     /*
  277.      * The first element is special-cased because we have to manipulate
  278.      * the head pointer rather than the previous element in the list.
  279.      */
  280.     if (priv->head->fake_timestamp == fake_timestamp) {
  281.         priv->head = node->next;
  282.  
  283.         if (!priv->head->next)
  284.             priv->tail = priv->head;
  285.  
  286.         node->next = NULL;
  287.         return node;
  288.     }
  289.  
  290.     /*
  291.      * The list is processed at arm's length so that we have the
  292.      * previous element available to rewrite its next pointer.
  293.      */
  294.     while (node->next) {
  295.         OpaqueList *current = node->next;
  296.         if (current->fake_timestamp == fake_timestamp) {
  297.             node->next = current->next;
  298.  
  299.             if (!node->next)
  300.                priv->tail = node;
  301.  
  302.             current->next = NULL;
  303.             return current;
  304.         } else {
  305.             node = current;
  306.         }
  307.     }
  308.  
  309.     av_log(priv->avctx, AV_LOG_VERBOSE,
  310.            "CrystalHD: Couldn't match fake_timestamp.\n");
  311.     return NULL;
  312. }
  313.  
  314.  
  315. /*****************************************************************************
  316.  * Video decoder API function definitions
  317.  ****************************************************************************/
  318.  
  319. static void flush(AVCodecContext *avctx)
  320. {
  321.     CHDContext *priv = avctx->priv_data;
  322.  
  323.     avctx->has_b_frames     = 0;
  324.     priv->last_picture      = -1;
  325.     priv->output_ready      = 0;
  326.     priv->need_second_field = 0;
  327.     priv->skip_next_output  = 0;
  328.     priv->decode_wait       = BASE_WAIT;
  329.  
  330.     av_frame_unref (priv->pic);
  331.  
  332.     /* Flush mode 4 flushes all software and hardware buffers. */
  333.     DtsFlushInput(priv->dev, 4);
  334. }
  335.  
  336.  
  337. static av_cold int uninit(AVCodecContext *avctx)
  338. {
  339.     CHDContext *priv = avctx->priv_data;
  340.     HANDLE device;
  341.  
  342.     device = priv->dev;
  343.     DtsStopDecoder(device);
  344.     DtsCloseDecoder(device);
  345.     DtsDeviceClose(device);
  346.  
  347.     /*
  348.      * Restore original extradata, so that if the decoder is
  349.      * reinitialised, the bitstream detection and filtering
  350.      * will work as expected.
  351.      */
  352.     if (priv->orig_extradata) {
  353.         av_free(avctx->extradata);
  354.         avctx->extradata = priv->orig_extradata;
  355.         avctx->extradata_size = priv->orig_extradata_size;
  356.         priv->orig_extradata = NULL;
  357.         priv->orig_extradata_size = 0;
  358.     }
  359.  
  360.     av_parser_close(priv->parser);
  361.     if (priv->bsfc) {
  362.         av_bitstream_filter_close(priv->bsfc);
  363.     }
  364.  
  365.     av_freep(&priv->sps_pps_buf);
  366.  
  367.     av_frame_free (&priv->pic);
  368.  
  369.     if (priv->head) {
  370.        OpaqueList *node = priv->head;
  371.        while (node) {
  372.           OpaqueList *next = node->next;
  373.           av_free(node);
  374.           node = next;
  375.        }
  376.     }
  377.  
  378.     return 0;
  379. }
  380.  
  381.  
  382. static av_cold int init(AVCodecContext *avctx)
  383. {
  384.     CHDContext* priv;
  385.     BC_STATUS ret;
  386.     BC_INFO_CRYSTAL version;
  387.     BC_INPUT_FORMAT format = {
  388.         .FGTEnable   = FALSE,
  389.         .Progressive = TRUE,
  390.         .OptFlags    = 0x80000000 | vdecFrameRate59_94 | 0x40,
  391.         .width       = avctx->width,
  392.         .height      = avctx->height,
  393.     };
  394.  
  395.     BC_MEDIA_SUBTYPE subtype;
  396.  
  397.     uint32_t mode = DTS_PLAYBACK_MODE |
  398.                     DTS_LOAD_FILE_PLAY_FW |
  399.                     DTS_SKIP_TX_CHK_CPB |
  400.                     DTS_PLAYBACK_DROP_RPT_MODE |
  401.                     DTS_SINGLE_THREADED_MODE |
  402.                     DTS_DFLT_RESOLUTION(vdecRESOLUTION_1080p23_976);
  403.  
  404.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD Init for %s\n",
  405.            avctx->codec->name);
  406.  
  407.     avctx->pix_fmt = AV_PIX_FMT_YUYV422;
  408.  
  409.     /* Initialize the library */
  410.     priv               = avctx->priv_data;
  411.     priv->avctx        = avctx;
  412.     priv->is_nal       = avctx->extradata_size > 0 && *(avctx->extradata) == 1;
  413.     priv->last_picture = -1;
  414.     priv->decode_wait  = BASE_WAIT;
  415.     priv->pic          = av_frame_alloc();
  416.  
  417.     subtype = id2subtype(priv, avctx->codec->id);
  418.     switch (subtype) {
  419.     case BC_MSUBTYPE_AVC1:
  420.         {
  421.             uint8_t *dummy_p;
  422.             int dummy_int;
  423.  
  424.             /* Back up the extradata so it can be restored at close time. */
  425.             priv->orig_extradata = av_malloc(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
  426.             if (!priv->orig_extradata) {
  427.                 av_log(avctx, AV_LOG_ERROR,
  428.                        "Failed to allocate copy of extradata\n");
  429.                 return AVERROR(ENOMEM);
  430.             }
  431.             priv->orig_extradata_size = avctx->extradata_size;
  432.             memcpy(priv->orig_extradata, avctx->extradata, avctx->extradata_size);
  433.  
  434.             priv->bsfc = av_bitstream_filter_init("h264_mp4toannexb");
  435.             if (!priv->bsfc) {
  436.                 av_log(avctx, AV_LOG_ERROR,
  437.                        "Cannot open the h264_mp4toannexb BSF!\n");
  438.                 return AVERROR_BSF_NOT_FOUND;
  439.             }
  440.             av_bitstream_filter_filter(priv->bsfc, avctx, NULL, &dummy_p,
  441.                                        &dummy_int, NULL, 0, 0);
  442.         }
  443.         subtype = BC_MSUBTYPE_H264;
  444.         // Fall-through
  445.     case BC_MSUBTYPE_H264:
  446.         format.startCodeSz = 4;
  447.         // Fall-through
  448.     case BC_MSUBTYPE_VC1:
  449.     case BC_MSUBTYPE_WVC1:
  450.     case BC_MSUBTYPE_WMV3:
  451.     case BC_MSUBTYPE_WMVA:
  452.     case BC_MSUBTYPE_MPEG2VIDEO:
  453.     case BC_MSUBTYPE_DIVX:
  454.     case BC_MSUBTYPE_DIVX311:
  455.         format.pMetaData  = avctx->extradata;
  456.         format.metaDataSz = avctx->extradata_size;
  457.         break;
  458.     default:
  459.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: Unknown codec name\n");
  460.         return AVERROR(EINVAL);
  461.     }
  462.     format.mSubtype = subtype;
  463.  
  464.     if (priv->sWidth) {
  465.         format.bEnableScaling = 1;
  466.         format.ScalingParams.sWidth = priv->sWidth;
  467.     }
  468.  
  469.     /* Get a decoder instance */
  470.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: starting up\n");
  471.     // Initialize the Link and Decoder devices
  472.     ret = DtsDeviceOpen(&priv->dev, mode);
  473.     if (ret != BC_STS_SUCCESS) {
  474.         av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsDeviceOpen failed\n");
  475.         goto fail;
  476.     }
  477.  
  478.     ret = DtsCrystalHDVersion(priv->dev, &version);
  479.     if (ret != BC_STS_SUCCESS) {
  480.         av_log(avctx, AV_LOG_VERBOSE,
  481.                "CrystalHD: DtsCrystalHDVersion failed\n");
  482.         goto fail;
  483.     }
  484.     priv->is_70012 = version.device == 0;
  485.  
  486.     if (priv->is_70012 &&
  487.         (subtype == BC_MSUBTYPE_DIVX || subtype == BC_MSUBTYPE_DIVX311)) {
  488.         av_log(avctx, AV_LOG_VERBOSE,
  489.                "CrystalHD: BCM70012 doesn't support MPEG4-ASP/DivX/Xvid\n");
  490.         goto fail;
  491.     }
  492.  
  493.     ret = DtsSetInputFormat(priv->dev, &format);
  494.     if (ret != BC_STS_SUCCESS) {
  495.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: SetInputFormat failed\n");
  496.         goto fail;
  497.     }
  498.  
  499.     ret = DtsOpenDecoder(priv->dev, BC_STREAM_TYPE_ES);
  500.     if (ret != BC_STS_SUCCESS) {
  501.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsOpenDecoder failed\n");
  502.         goto fail;
  503.     }
  504.  
  505.     ret = DtsSetColorSpace(priv->dev, OUTPUT_MODE422_YUY2);
  506.     if (ret != BC_STS_SUCCESS) {
  507.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsSetColorSpace failed\n");
  508.         goto fail;
  509.     }
  510.     ret = DtsStartDecoder(priv->dev);
  511.     if (ret != BC_STS_SUCCESS) {
  512.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartDecoder failed\n");
  513.         goto fail;
  514.     }
  515.     ret = DtsStartCapture(priv->dev);
  516.     if (ret != BC_STS_SUCCESS) {
  517.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartCapture failed\n");
  518.         goto fail;
  519.     }
  520.  
  521.     if (avctx->codec->id == AV_CODEC_ID_H264) {
  522.         priv->parser = av_parser_init(avctx->codec->id);
  523.         if (!priv->parser)
  524.             av_log(avctx, AV_LOG_WARNING,
  525.                    "Cannot open the h.264 parser! Interlaced h.264 content "
  526.                    "will not be detected reliably.\n");
  527.         priv->parser->flags = PARSER_FLAG_COMPLETE_FRAMES;
  528.     }
  529.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Init complete.\n");
  530.  
  531.     return 0;
  532.  
  533.  fail:
  534.     uninit(avctx);
  535.     return -1;
  536. }
  537.  
  538.  
  539. static inline CopyRet copy_frame(AVCodecContext *avctx,
  540.                                  BC_DTS_PROC_OUT *output,
  541.                                  void *data, int *got_frame)
  542. {
  543.     BC_STATUS ret;
  544.     BC_DTS_STATUS decoder_status = { 0, };
  545.     uint8_t trust_interlaced;
  546.     uint8_t interlaced;
  547.  
  548.     CHDContext *priv = avctx->priv_data;
  549.     int64_t pkt_pts  = AV_NOPTS_VALUE;
  550.     uint8_t pic_type = 0;
  551.  
  552.     uint8_t bottom_field = (output->PicInfo.flags & VDEC_FLAG_BOTTOMFIELD) ==
  553.                            VDEC_FLAG_BOTTOMFIELD;
  554.     uint8_t bottom_first = !!(output->PicInfo.flags & VDEC_FLAG_BOTTOM_FIRST);
  555.  
  556.     int width    = output->PicInfo.width;
  557.     int height   = output->PicInfo.height;
  558.     int bwidth;
  559.     uint8_t *src = output->Ybuff;
  560.     int sStride;
  561.     uint8_t *dst;
  562.     int dStride;
  563.  
  564.     if (output->PicInfo.timeStamp != 0) {
  565.         OpaqueList *node = opaque_list_pop(priv, output->PicInfo.timeStamp);
  566.         if (node) {
  567.             pkt_pts = node->reordered_opaque;
  568.             pic_type = node->pic_type;
  569.             av_free(node);
  570.         } else {
  571.             /*
  572.              * We will encounter a situation where a timestamp cannot be
  573.              * popped if a second field is being returned. In this case,
  574.              * each field has the same timestamp and the first one will
  575.              * cause it to be popped. To keep subsequent calculations
  576.              * simple, pic_type should be set a FIELD value - doesn't
  577.              * matter which, but I chose BOTTOM.
  578.              */
  579.             pic_type = PICT_BOTTOM_FIELD;
  580.         }
  581.         av_log(avctx, AV_LOG_VERBOSE, "output \"pts\": %"PRIu64"\n",
  582.                output->PicInfo.timeStamp);
  583.         av_log(avctx, AV_LOG_VERBOSE, "output picture type %d\n",
  584.                pic_type);
  585.     }
  586.  
  587.     ret = DtsGetDriverStatus(priv->dev, &decoder_status);
  588.     if (ret != BC_STS_SUCCESS) {
  589.         av_log(avctx, AV_LOG_ERROR,
  590.                "CrystalHD: GetDriverStatus failed: %u\n", ret);
  591.        return RET_ERROR;
  592.     }
  593.  
  594.     /*
  595.      * For most content, we can trust the interlaced flag returned
  596.      * by the hardware, but sometimes we can't. These are the
  597.      * conditions under which we can trust the flag:
  598.      *
  599.      * 1) It's not h.264 content
  600.      * 2) The UNKNOWN_SRC flag is not set
  601.      * 3) We know we're expecting a second field
  602.      * 4) The hardware reports this picture and the next picture
  603.      *    have the same picture number.
  604.      *
  605.      * Note that there can still be interlaced content that will
  606.      * fail this check, if the hardware hasn't decoded the next
  607.      * picture or if there is a corruption in the stream. (In either
  608.      * case a 0 will be returned for the next picture number)
  609.      */
  610.     trust_interlaced = avctx->codec->id != AV_CODEC_ID_H264 ||
  611.                        !(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) ||
  612.                        priv->need_second_field ||
  613.                        (decoder_status.picNumFlags & ~0x40000000) ==
  614.                        output->PicInfo.picture_number;
  615.  
  616.     /*
  617.      * If we got a false negative for trust_interlaced on the first field,
  618.      * we will realise our mistake here when we see that the picture number is that
  619.      * of the previous picture. We cannot recover the frame and should discard the
  620.      * second field to keep the correct number of output frames.
  621.      */
  622.     if (output->PicInfo.picture_number == priv->last_picture && !priv->need_second_field) {
  623.         av_log(avctx, AV_LOG_WARNING,
  624.                "Incorrectly guessed progressive frame. Discarding second field\n");
  625.         /* Returning without providing a picture. */
  626.         return RET_OK;
  627.     }
  628.  
  629.     interlaced = (output->PicInfo.flags & VDEC_FLAG_INTERLACED_SRC) &&
  630.                  trust_interlaced;
  631.  
  632.     if (!trust_interlaced && (decoder_status.picNumFlags & ~0x40000000) == 0) {
  633.         av_log(avctx, AV_LOG_VERBOSE,
  634.                "Next picture number unknown. Assuming progressive frame.\n");
  635.     }
  636.  
  637.     av_log(avctx, AV_LOG_VERBOSE, "Interlaced state: %d | trust_interlaced %d\n",
  638.            interlaced, trust_interlaced);
  639.  
  640.     if (priv->pic->data[0] && !priv->need_second_field)
  641.         av_frame_unref(priv->pic);
  642.  
  643.     priv->need_second_field = interlaced && !priv->need_second_field;
  644.  
  645.     if (!priv->pic->data[0]) {
  646.         if (ff_get_buffer(avctx, priv->pic, AV_GET_BUFFER_FLAG_REF) < 0)
  647.             return RET_ERROR;
  648.     }
  649.  
  650.     bwidth = av_image_get_linesize(avctx->pix_fmt, width, 0);
  651.     if (priv->is_70012) {
  652.         int pStride;
  653.  
  654.         if (width <= 720)
  655.             pStride = 720;
  656.         else if (width <= 1280)
  657.             pStride = 1280;
  658.         else pStride = 1920;
  659.         sStride = av_image_get_linesize(avctx->pix_fmt, pStride, 0);
  660.     } else {
  661.         sStride = bwidth;
  662.     }
  663.  
  664.     dStride = priv->pic->linesize[0];
  665.     dst     = priv->pic->data[0];
  666.  
  667.     av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Copying out frame\n");
  668.  
  669.     if (interlaced) {
  670.         int dY = 0;
  671.         int sY = 0;
  672.  
  673.         height /= 2;
  674.         if (bottom_field) {
  675.             av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: bottom field\n");
  676.             dY = 1;
  677.         } else {
  678.             av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: top field\n");
  679.             dY = 0;
  680.         }
  681.  
  682.         for (sY = 0; sY < height; dY++, sY++) {
  683.             memcpy(&(dst[dY * dStride]), &(src[sY * sStride]), bwidth);
  684.             dY++;
  685.         }
  686.     } else {
  687.         av_image_copy_plane(dst, dStride, src, sStride, bwidth, height);
  688.     }
  689.  
  690.     priv->pic->interlaced_frame = interlaced;
  691.     if (interlaced)
  692.         priv->pic->top_field_first = !bottom_first;
  693.  
  694.     priv->pic->pkt_pts = pkt_pts;
  695.  
  696.     if (!priv->need_second_field) {
  697.         *got_frame       = 1;
  698.         if ((ret = av_frame_ref(data, priv->pic)) < 0) {
  699.             return ret;
  700.         }
  701.     }
  702.  
  703.     /*
  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
  708.      * the first case.
  709.      */
  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;
  714.     }
  715.  
  716.     /*
  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.
  723.      *
  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)
  727.      */
  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;
  732. }
  733.  
  734.  
  735. static inline CopyRet receive_frame(AVCodecContext *avctx,
  736.                                     void *data, int *got_frame)
  737. {
  738.     BC_STATUS ret;
  739.     BC_DTS_PROC_OUT output = {
  740.         .PicInfo.width  = avctx->width,
  741.         .PicInfo.height = avctx->height,
  742.     };
  743.     CHDContext *priv = avctx->priv_data;
  744.     HANDLE dev       = priv->dev;
  745.  
  746.     *got_frame = 0;
  747.  
  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};
  757.             break;
  758.         case vdecAspectRatio12_11:
  759.             avctx->sample_aspect_ratio = (AVRational) { 12, 11};
  760.             break;
  761.         case vdecAspectRatio10_11:
  762.             avctx->sample_aspect_ratio = (AVRational) { 10, 11};
  763.             break;
  764.         case vdecAspectRatio16_11:
  765.             avctx->sample_aspect_ratio = (AVRational) { 16, 11};
  766.             break;
  767.         case vdecAspectRatio40_33:
  768.             avctx->sample_aspect_ratio = (AVRational) { 40, 33};
  769.             break;
  770.         case vdecAspectRatio24_11:
  771.             avctx->sample_aspect_ratio = (AVRational) { 24, 11};
  772.             break;
  773.         case vdecAspectRatio20_11:
  774.             avctx->sample_aspect_ratio = (AVRational) { 20, 11};
  775.             break;
  776.         case vdecAspectRatio32_11:
  777.             avctx->sample_aspect_ratio = (AVRational) { 32, 11};
  778.             break;
  779.         case vdecAspectRatio80_33:
  780.             avctx->sample_aspect_ratio = (AVRational) { 80, 33};
  781.             break;
  782.         case vdecAspectRatio18_11:
  783.             avctx->sample_aspect_ratio = (AVRational) { 18, 11};
  784.             break;
  785.         case vdecAspectRatio15_11:
  786.             avctx->sample_aspect_ratio = (AVRational) { 15, 11};
  787.             break;
  788.         case vdecAspectRatio64_33:
  789.             avctx->sample_aspect_ratio = (AVRational) { 64, 33};
  790.             break;
  791.         case vdecAspectRatio160_99:
  792.             avctx->sample_aspect_ratio = (AVRational) {160, 99};
  793.             break;
  794.         case vdecAspectRatio4_3:
  795.             avctx->sample_aspect_ratio = (AVRational) {  4,  3};
  796.             break;
  797.         case vdecAspectRatio16_9:
  798.             avctx->sample_aspect_ratio = (AVRational) { 16,  9};
  799.             break;
  800.         case vdecAspectRatio221_1:
  801.             avctx->sample_aspect_ratio = (AVRational) {221,  1};
  802.             break;
  803.         }
  804.         return RET_COPY_AGAIN;
  805.     } else if (ret == BC_STS_SUCCESS) {
  806.         int copy_ret = -1;
  807.         if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) {
  808.             if (priv->last_picture == -1) {
  809.                 /*
  810.                  * Init to one less, so that the incrementing code doesn't
  811.                  * need to be special-cased.
  812.                  */
  813.                 priv->last_picture = output.PicInfo.picture_number - 1;
  814.             }
  815.  
  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;
  823.             }
  824.  
  825.             print_frame_info(priv, &output);
  826.  
  827.             if (priv->last_picture + 1 < output.PicInfo.picture_number) {
  828.                 av_log(avctx, AV_LOG_WARNING,
  829.                        "CrystalHD: Picture Number discontinuity\n");
  830.                 /*
  831.                  * Have we lost frames? If so, we need to shrink the
  832.                  * pipeline length appropriately.
  833.                  *
  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
  836.                  * ones.
  837.                  *
  838.                  * In any case, only warn the first time.
  839.                  */
  840.                priv->last_picture = output.PicInfo.picture_number - 1;
  841.             }
  842.  
  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);
  849.             }
  850.         } else {
  851.             /*
  852.              * An invalid frame has been consumed.
  853.              */
  854.             av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with "
  855.                                         "invalid PIB\n");
  856.             avctx->has_b_frames--;
  857.             copy_ret = RET_OK;
  858.         }
  859.         DtsReleaseOutputBuffs(dev, NULL, FALSE);
  860.  
  861.         return copy_ret;
  862.     } else if (ret == BC_STS_BUSY) {
  863.         return RET_COPY_AGAIN;
  864.     } else {
  865.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret);
  866.         return RET_ERROR;
  867.     }
  868. }
  869.  
  870.  
  871. static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
  872. {
  873.     BC_STATUS ret;
  874.     BC_DTS_STATUS decoder_status = { 0, };
  875.     CopyRet rec_ret;
  876.     CHDContext *priv   = avctx->priv_data;
  877.     HANDLE dev         = priv->dev;
  878.     uint8_t *in_data   = avpkt->data;
  879.     int len            = avpkt->size;
  880.     int free_data      = 0;
  881.     uint8_t pic_type   = 0;
  882.  
  883.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_frame\n");
  884.  
  885.     if (avpkt->size == 7 && !priv->bframe_bug) {
  886.         /*
  887.          * The use of a drop frame triggers the bug
  888.          */
  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) {
  893.         /*
  894.          * Delay frames don't trigger the bug
  895.          */
  896.         av_log(avctx, AV_LOG_INFO,
  897.                "CrystalHD: Disabling work-around for packed b-frame bug\n");
  898.         priv->bframe_bug = 0;
  899.     }
  900.  
  901.     if (len) {
  902.         int32_t tx_free = (int32_t)DtsTxFreeSize(dev);
  903.  
  904.         if (priv->parser) {
  905.             int ret = 0;
  906.  
  907.             if (priv->bsfc) {
  908.                 ret = av_bitstream_filter_filter(priv->bsfc, avctx, NULL,
  909.                                                  &in_data, &len,
  910.                                                  avpkt->data, len, 0);
  911.             }
  912.             free_data = ret > 0;
  913.  
  914.             if (ret >= 0) {
  915.                 uint8_t *pout;
  916.                 int psize;
  917.                 int index;
  918.                 H264Context *h = priv->parser->priv_data;
  919.  
  920.                 index = av_parser_parse2(priv->parser, avctx, &pout, &psize,
  921.                                          in_data, len, avctx->internal->pkt->pts,
  922.                                          avctx->internal->pkt->dts, 0);
  923.                 if (index < 0) {
  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");
  932.                 } else {
  933.                     av_log(avctx, AV_LOG_VERBOSE,
  934.                            "CrystalHD: parser picture type %d\n",
  935.                            h->picture_structure);
  936.                     pic_type = h->picture_structure;
  937.                 }
  938.             } else {
  939.                 av_log(avctx, AV_LOG_WARNING,
  940.                        "CrystalHD: mp4toannexb filter failed to filter "
  941.                        "packet. Interlaced frames may be incorrectly "
  942.                        "detected.\n");
  943.             }
  944.         }
  945.  
  946.         if (len < tx_free - 1024) {
  947.             /*
  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.
  955.              */
  956.             uint64_t pts = opaque_list_push(priv, avctx->internal->pkt->pts, pic_type);
  957.             if (!pts) {
  958.                 if (free_data) {
  959.                     av_freep(&in_data);
  960.                 }
  961.                 return AVERROR(ENOMEM);
  962.             }
  963.             av_log(priv->avctx, AV_LOG_VERBOSE,
  964.                    "input \"pts\": %"PRIu64"\n", pts);
  965.             ret = DtsProcInput(dev, in_data, len, pts, 0);
  966.             if (free_data) {
  967.                 av_freep(&in_data);
  968.             }
  969.             if (ret == BC_STS_BUSY) {
  970.                 av_log(avctx, AV_LOG_WARNING,
  971.                        "CrystalHD: ProcInput returned busy\n");
  972.                 usleep(BASE_WAIT);
  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);
  977.                 return -1;
  978.             }
  979.             avctx->has_b_frames++;
  980.         } else {
  981.             av_log(avctx, AV_LOG_WARNING, "CrystalHD: Input buffer full\n");
  982.             len = 0; // We didn't consume any bytes.
  983.         }
  984.     } else {
  985.         av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n");
  986.     }
  987.  
  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--;
  992.         return len;
  993.     }
  994.  
  995.     ret = DtsGetDriverStatus(dev, &decoder_status);
  996.     if (ret != BC_STS_SUCCESS) {
  997.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n");
  998.         return -1;
  999.     }
  1000.  
  1001.     /*
  1002.      * No frames ready. Don't try to extract.
  1003.      *
  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
  1007.      * succeed.
  1008.      */
  1009.     if (priv->output_ready < 2) {
  1010.         if (decoder_status.ReadyListCount != 0)
  1011.             priv->output_ready++;
  1012.         usleep(BASE_WAIT);
  1013.         av_log(avctx, AV_LOG_INFO, "CrystalHD: Filling pipeline.\n");
  1014.         return len;
  1015.     } else if (decoder_status.ReadyListCount == 0) {
  1016.         /*
  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
  1020.          * decode call.
  1021.          */
  1022.         usleep(BASE_WAIT);
  1023.         priv->decode_wait += WAIT_UNIT;
  1024.         av_log(avctx, AV_LOG_INFO, "CrystalHD: No frames ready. Returning\n");
  1025.         return len;
  1026.     }
  1027.  
  1028.     do {
  1029.         rec_ret = receive_frame(avctx, data, got_frame);
  1030.         if (rec_ret == RET_OK && *got_frame == 0) {
  1031.             /*
  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.
  1037.              */
  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) {
  1041.             /*
  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.
  1048.              */
  1049.             av_log(avctx, AV_LOG_VERBOSE, "Trying to get second field.\n");
  1050.             while (1) {
  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)
  1058.                         break;
  1059.                 }
  1060.             }
  1061.             av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Got second field.\n");
  1062.         } else if (rec_ret == RET_SKIP_NEXT_COPY) {
  1063.             /*
  1064.              * Two input packets got turned into a field pair. Gawd.
  1065.              */
  1066.             av_log(avctx, AV_LOG_VERBOSE,
  1067.                    "Don't output on next decode call.\n");
  1068.             priv->skip_next_output = 1;
  1069.         }
  1070.         /*
  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
  1076.          * valid pts.
  1077.          */
  1078.     } while (rec_ret == RET_COPY_AGAIN);
  1079.     usleep(priv->decode_wait);
  1080.     return len;
  1081. }
  1082.  
  1083.  
  1084. #if CONFIG_H264_CRYSTALHD_DECODER
  1085. static AVClass h264_class = {
  1086.     "h264_crystalhd",
  1087.     av_default_item_name,
  1088.     options,
  1089.     LIBAVUTIL_VERSION_INT,
  1090. };
  1091.  
  1092. AVCodec ff_h264_crystalhd_decoder = {
  1093.     .name           = "h264_crystalhd",
  1094.     .long_name      = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (CrystalHD acceleration)"),
  1095.     .type           = AVMEDIA_TYPE_VIDEO,
  1096.     .id             = AV_CODEC_ID_H264,
  1097.     .priv_data_size = sizeof(CHDContext),
  1098.     .init           = init,
  1099.     .close          = uninit,
  1100.     .decode         = decode,
  1101.     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
  1102.     .flush          = flush,
  1103.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1104.     .priv_class     = &h264_class,
  1105. };
  1106. #endif
  1107.  
  1108. #if CONFIG_MPEG2_CRYSTALHD_DECODER
  1109. static AVClass mpeg2_class = {
  1110.     "mpeg2_crystalhd",
  1111.     av_default_item_name,
  1112.     options,
  1113.     LIBAVUTIL_VERSION_INT,
  1114. };
  1115.  
  1116. AVCodec ff_mpeg2_crystalhd_decoder = {
  1117.     .name           = "mpeg2_crystalhd",
  1118.     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 Video (CrystalHD acceleration)"),
  1119.     .type           = AVMEDIA_TYPE_VIDEO,
  1120.     .id             = AV_CODEC_ID_MPEG2VIDEO,
  1121.     .priv_data_size = sizeof(CHDContext),
  1122.     .init           = init,
  1123.     .close          = uninit,
  1124.     .decode         = decode,
  1125.     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
  1126.     .flush          = flush,
  1127.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1128.     .priv_class     = &mpeg2_class,
  1129. };
  1130. #endif
  1131.  
  1132. #if CONFIG_MPEG4_CRYSTALHD_DECODER
  1133. static AVClass mpeg4_class = {
  1134.     "mpeg4_crystalhd",
  1135.     av_default_item_name,
  1136.     options,
  1137.     LIBAVUTIL_VERSION_INT,
  1138. };
  1139.  
  1140. AVCodec ff_mpeg4_crystalhd_decoder = {
  1141.     .name           = "mpeg4_crystalhd",
  1142.     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 (CrystalHD acceleration)"),
  1143.     .type           = AVMEDIA_TYPE_VIDEO,
  1144.     .id             = AV_CODEC_ID_MPEG4,
  1145.     .priv_data_size = sizeof(CHDContext),
  1146.     .init           = init,
  1147.     .close          = uninit,
  1148.     .decode         = decode,
  1149.     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
  1150.     .flush          = flush,
  1151.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1152.     .priv_class     = &mpeg4_class,
  1153. };
  1154. #endif
  1155.  
  1156. #if CONFIG_MSMPEG4_CRYSTALHD_DECODER
  1157. static AVClass msmpeg4_class = {
  1158.     "msmpeg4_crystalhd",
  1159.     av_default_item_name,
  1160.     options,
  1161.     LIBAVUTIL_VERSION_INT,
  1162. };
  1163.  
  1164. AVCodec ff_msmpeg4_crystalhd_decoder = {
  1165.     .name           = "msmpeg4_crystalhd",
  1166.     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 Microsoft variant version 3 (CrystalHD acceleration)"),
  1167.     .type           = AVMEDIA_TYPE_VIDEO,
  1168.     .id             = AV_CODEC_ID_MSMPEG4V3,
  1169.     .priv_data_size = sizeof(CHDContext),
  1170.     .init           = init,
  1171.     .close          = uninit,
  1172.     .decode         = decode,
  1173.     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_EXPERIMENTAL,
  1174.     .flush          = flush,
  1175.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1176.     .priv_class     = &msmpeg4_class,
  1177. };
  1178. #endif
  1179.  
  1180. #if CONFIG_VC1_CRYSTALHD_DECODER
  1181. static AVClass vc1_class = {
  1182.     "vc1_crystalhd",
  1183.     av_default_item_name,
  1184.     options,
  1185.     LIBAVUTIL_VERSION_INT,
  1186. };
  1187.  
  1188. AVCodec ff_vc1_crystalhd_decoder = {
  1189.     .name           = "vc1_crystalhd",
  1190.     .long_name      = NULL_IF_CONFIG_SMALL("SMPTE VC-1 (CrystalHD acceleration)"),
  1191.     .type           = AVMEDIA_TYPE_VIDEO,
  1192.     .id             = AV_CODEC_ID_VC1,
  1193.     .priv_data_size = sizeof(CHDContext),
  1194.     .init           = init,
  1195.     .close          = uninit,
  1196.     .decode         = decode,
  1197.     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
  1198.     .flush          = flush,
  1199.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1200.     .priv_class     = &vc1_class,
  1201. };
  1202. #endif
  1203.  
  1204. #if CONFIG_WMV3_CRYSTALHD_DECODER
  1205. static AVClass wmv3_class = {
  1206.     "wmv3_crystalhd",
  1207.     av_default_item_name,
  1208.     options,
  1209.     LIBAVUTIL_VERSION_INT,
  1210. };
  1211.  
  1212. AVCodec ff_wmv3_crystalhd_decoder = {
  1213.     .name           = "wmv3_crystalhd",
  1214.     .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 9 (CrystalHD acceleration)"),
  1215.     .type           = AVMEDIA_TYPE_VIDEO,
  1216.     .id             = AV_CODEC_ID_WMV3,
  1217.     .priv_data_size = sizeof(CHDContext),
  1218.     .init           = init,
  1219.     .close          = uninit,
  1220.     .decode         = decode,
  1221.     .capabilities   = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
  1222.     .flush          = flush,
  1223.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1224.     .priv_class     = &wmv3_class,
  1225. };
  1226. #endif
  1227.