Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  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. #include <unistd.h>
  81.  
  82. #include <libcrystalhd/bc_dts_types.h>
  83. #include <libcrystalhd/bc_dts_defs.h>
  84. #include <libcrystalhd/libcrystalhd_if.h>
  85.  
  86. #include "avcodec.h"
  87. #include "h264.h"
  88. #include "internal.h"
  89. #include "libavutil/imgutils.h"
  90. #include "libavutil/intreadwrite.h"
  91. #include "libavutil/opt.h"
  92.  
  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
  101.  
  102.  
  103. /*****************************************************************************
  104.  * Module private data
  105.  ****************************************************************************/
  106.  
  107. typedef enum {
  108.     RET_ERROR           = -1,
  109.     RET_OK              = 0,
  110.     RET_COPY_AGAIN      = 1,
  111.     RET_SKIP_NEXT_COPY  = 2,
  112.     RET_COPY_NEXT_FIELD = 3,
  113. } CopyRet;
  114.  
  115. typedef struct OpaqueList {
  116.     struct OpaqueList *next;
  117.     uint64_t fake_timestamp;
  118.     uint64_t reordered_opaque;
  119.     uint8_t pic_type;
  120. } OpaqueList;
  121.  
  122. typedef struct {
  123.     AVClass *av_class;
  124.     AVCodecContext *avctx;
  125.     AVFrame *pic;
  126.     HANDLE dev;
  127.  
  128.     uint8_t *orig_extradata;
  129.     uint32_t orig_extradata_size;
  130.  
  131.     AVBitStreamFilterContext *bsfc;
  132.     AVCodecParserContext *parser;
  133.  
  134.     uint8_t is_70012;
  135.     uint8_t *sps_pps_buf;
  136.     uint32_t sps_pps_size;
  137.     uint8_t is_nal;
  138.     uint8_t output_ready;
  139.     uint8_t need_second_field;
  140.     uint8_t skip_next_output;
  141.     uint64_t decode_wait;
  142.  
  143.     uint64_t last_picture;
  144.  
  145.     OpaqueList *head;
  146.     OpaqueList *tail;
  147.  
  148.     /* Options */
  149.     uint32_t sWidth;
  150.     uint8_t bframe_bug;
  151. } CHDContext;
  152.  
  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, },
  159.     { NULL, },
  160. };
  161.  
  162.  
  163. /*****************************************************************************
  164.  * Helper functions
  165.  ****************************************************************************/
  166.  
  167. static inline BC_MEDIA_SUBTYPE id2subtype(CHDContext *priv, enum AVCodecID id)
  168. {
  169.     switch (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;
  182.     default:
  183.         return BC_MSUBTYPE_INVALID;
  184.     }
  185. }
  186.  
  187. static inline void print_frame_info(CHDContext *priv, BC_DTS_PROC_OUT *output)
  188. {
  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);
  226. }
  227.  
  228.  
  229. /*****************************************************************************
  230.  * OpaqueList functions
  231.  ****************************************************************************/
  232.  
  233. static uint64_t opaque_list_push(CHDContext *priv, uint64_t reordered_opaque,
  234.                                  uint8_t pic_type)
  235. {
  236.     OpaqueList *newNode = av_mallocz(sizeof (OpaqueList));
  237.     if (!newNode) {
  238.         av_log(priv->avctx, AV_LOG_ERROR,
  239.                "Unable to allocate new node in OpaqueList.\n");
  240.         return 0;
  241.     }
  242.     if (!priv->head) {
  243.         newNode->fake_timestamp = TIMESTAMP_UNIT;
  244.         priv->head              = newNode;
  245.     } else {
  246.         newNode->fake_timestamp = priv->tail->fake_timestamp + TIMESTAMP_UNIT;
  247.         priv->tail->next        = newNode;
  248.     }
  249.     priv->tail = newNode;
  250.     newNode->reordered_opaque = reordered_opaque;
  251.     newNode->pic_type = pic_type;
  252.  
  253.     return newNode->fake_timestamp;
  254. }
  255.  
  256. /*
  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.
  260.  *
  261.  * Returned node must be freed by caller.
  262.  */
  263. static OpaqueList *opaque_list_pop(CHDContext *priv, uint64_t fake_timestamp)
  264. {
  265.     OpaqueList *node = priv->head;
  266.  
  267.     if (!priv->head) {
  268.         av_log(priv->avctx, AV_LOG_ERROR,
  269.                "CrystalHD: Attempted to query non-existent timestamps.\n");
  270.         return NULL;
  271.     }
  272.  
  273.     /*
  274.      * The first element is special-cased because we have to manipulate
  275.      * the head pointer rather than the previous element in the list.
  276.      */
  277.     if (priv->head->fake_timestamp == fake_timestamp) {
  278.         priv->head = node->next;
  279.  
  280.         if (!priv->head->next)
  281.             priv->tail = priv->head;
  282.  
  283.         node->next = NULL;
  284.         return node;
  285.     }
  286.  
  287.     /*
  288.      * The list is processed at arm's length so that we have the
  289.      * previous element available to rewrite its next pointer.
  290.      */
  291.     while (node->next) {
  292.         OpaqueList *current = node->next;
  293.         if (current->fake_timestamp == fake_timestamp) {
  294.             node->next = current->next;
  295.  
  296.             if (!node->next)
  297.                priv->tail = node;
  298.  
  299.             current->next = NULL;
  300.             return current;
  301.         } else {
  302.             node = current;
  303.         }
  304.     }
  305.  
  306.     av_log(priv->avctx, AV_LOG_VERBOSE,
  307.            "CrystalHD: Couldn't match fake_timestamp.\n");
  308.     return NULL;
  309. }
  310.  
  311.  
  312. /*****************************************************************************
  313.  * Video decoder API function definitions
  314.  ****************************************************************************/
  315.  
  316. static void flush(AVCodecContext *avctx)
  317. {
  318.     CHDContext *priv = avctx->priv_data;
  319.  
  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;
  326.  
  327.     av_frame_unref (priv->pic);
  328.  
  329.     /* Flush mode 4 flushes all software and hardware buffers. */
  330.     DtsFlushInput(priv->dev, 4);
  331. }
  332.  
  333.  
  334. static av_cold int uninit(AVCodecContext *avctx)
  335. {
  336.     CHDContext *priv = avctx->priv_data;
  337.     HANDLE device;
  338.  
  339.     device = priv->dev;
  340.     DtsStopDecoder(device);
  341.     DtsCloseDecoder(device);
  342.     DtsDeviceClose(device);
  343.  
  344.     /*
  345.      * Restore original extradata, so that if the decoder is
  346.      * reinitialised, the bitstream detection and filtering
  347.      * will work as expected.
  348.      */
  349.     if (priv->orig_extradata) {
  350.         av_free(avctx->extradata);
  351.         avctx->extradata = priv->orig_extradata;
  352.         avctx->extradata_size = priv->orig_extradata_size;
  353.         priv->orig_extradata = NULL;
  354.         priv->orig_extradata_size = 0;
  355.     }
  356.  
  357.     av_parser_close(priv->parser);
  358.     if (priv->bsfc) {
  359.         av_bitstream_filter_close(priv->bsfc);
  360.     }
  361.  
  362.     av_free(priv->sps_pps_buf);
  363.  
  364.     av_frame_free (&priv->pic);
  365.  
  366.     if (priv->head) {
  367.        OpaqueList *node = priv->head;
  368.        while (node) {
  369.           OpaqueList *next = node->next;
  370.           av_free(node);
  371.           node = next;
  372.        }
  373.     }
  374.  
  375.     return 0;
  376. }
  377.  
  378.  
  379. static av_cold int init(AVCodecContext *avctx)
  380. {
  381.     CHDContext* priv;
  382.     BC_STATUS ret;
  383.     BC_INFO_CRYSTAL version;
  384.     BC_INPUT_FORMAT format = {
  385.         .FGTEnable   = FALSE,
  386.         .Progressive = TRUE,
  387.         .OptFlags    = 0x80000000 | vdecFrameRate59_94 | 0x40,
  388.         .width       = avctx->width,
  389.         .height      = avctx->height,
  390.     };
  391.  
  392.     BC_MEDIA_SUBTYPE subtype;
  393.  
  394.     uint32_t mode = DTS_PLAYBACK_MODE |
  395.                     DTS_LOAD_FILE_PLAY_FW |
  396.                     DTS_SKIP_TX_CHK_CPB |
  397.                     DTS_PLAYBACK_DROP_RPT_MODE |
  398.                     DTS_SINGLE_THREADED_MODE |
  399.                     DTS_DFLT_RESOLUTION(vdecRESOLUTION_1080p23_976);
  400.  
  401.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD Init for %s\n",
  402.            avctx->codec->name);
  403.  
  404.     avctx->pix_fmt = AV_PIX_FMT_YUYV422;
  405.  
  406.     /* Initialize the library */
  407.     priv               = avctx->priv_data;
  408.     priv->avctx        = avctx;
  409.     priv->is_nal       = avctx->extradata_size > 0 && *(avctx->extradata) == 1;
  410.     priv->last_picture = -1;
  411.     priv->decode_wait  = BASE_WAIT;
  412.     priv->pic          = av_frame_alloc();
  413.  
  414.     subtype = id2subtype(priv, avctx->codec->id);
  415.     switch (subtype) {
  416.     case BC_MSUBTYPE_AVC1:
  417.         {
  418.             uint8_t *dummy_p;
  419.             int dummy_int;
  420.  
  421.             /* Back up the extradata so it can be restored at close time. */
  422.             priv->orig_extradata = av_malloc(avctx->extradata_size);
  423.             if (!priv->orig_extradata) {
  424.                 av_log(avctx, AV_LOG_ERROR,
  425.                        "Failed to allocate copy of extradata\n");
  426.                 return AVERROR(ENOMEM);
  427.             }
  428.             priv->orig_extradata_size = avctx->extradata_size;
  429.             memcpy(priv->orig_extradata, avctx->extradata, avctx->extradata_size);
  430.  
  431.             priv->bsfc = av_bitstream_filter_init("h264_mp4toannexb");
  432.             if (!priv->bsfc) {
  433.                 av_log(avctx, AV_LOG_ERROR,
  434.                        "Cannot open the h264_mp4toannexb BSF!\n");
  435.                 return AVERROR_BSF_NOT_FOUND;
  436.             }
  437.             av_bitstream_filter_filter(priv->bsfc, avctx, NULL, &dummy_p,
  438.                                        &dummy_int, NULL, 0, 0);
  439.         }
  440.         subtype = BC_MSUBTYPE_H264;
  441.         // Fall-through
  442.     case BC_MSUBTYPE_H264:
  443.         format.startCodeSz = 4;
  444.         // Fall-through
  445.     case BC_MSUBTYPE_VC1:
  446.     case BC_MSUBTYPE_WVC1:
  447.     case BC_MSUBTYPE_WMV3:
  448.     case BC_MSUBTYPE_WMVA:
  449.     case BC_MSUBTYPE_MPEG2VIDEO:
  450.     case BC_MSUBTYPE_DIVX:
  451.     case BC_MSUBTYPE_DIVX311:
  452.         format.pMetaData  = avctx->extradata;
  453.         format.metaDataSz = avctx->extradata_size;
  454.         break;
  455.     default:
  456.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: Unknown codec name\n");
  457.         return AVERROR(EINVAL);
  458.     }
  459.     format.mSubtype = subtype;
  460.  
  461.     if (priv->sWidth) {
  462.         format.bEnableScaling = 1;
  463.         format.ScalingParams.sWidth = priv->sWidth;
  464.     }
  465.  
  466.     /* Get a decoder instance */
  467.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: starting up\n");
  468.     // Initialize the Link and Decoder devices
  469.     ret = DtsDeviceOpen(&priv->dev, mode);
  470.     if (ret != BC_STS_SUCCESS) {
  471.         av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: DtsDeviceOpen failed\n");
  472.         goto fail;
  473.     }
  474.  
  475.     ret = DtsCrystalHDVersion(priv->dev, &version);
  476.     if (ret != BC_STS_SUCCESS) {
  477.         av_log(avctx, AV_LOG_VERBOSE,
  478.                "CrystalHD: DtsCrystalHDVersion failed\n");
  479.         goto fail;
  480.     }
  481.     priv->is_70012 = version.device == 0;
  482.  
  483.     if (priv->is_70012 &&
  484.         (subtype == BC_MSUBTYPE_DIVX || subtype == BC_MSUBTYPE_DIVX311)) {
  485.         av_log(avctx, AV_LOG_VERBOSE,
  486.                "CrystalHD: BCM70012 doesn't support MPEG4-ASP/DivX/Xvid\n");
  487.         goto fail;
  488.     }
  489.  
  490.     ret = DtsSetInputFormat(priv->dev, &format);
  491.     if (ret != BC_STS_SUCCESS) {
  492.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: SetInputFormat failed\n");
  493.         goto fail;
  494.     }
  495.  
  496.     ret = DtsOpenDecoder(priv->dev, BC_STREAM_TYPE_ES);
  497.     if (ret != BC_STS_SUCCESS) {
  498.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsOpenDecoder failed\n");
  499.         goto fail;
  500.     }
  501.  
  502.     ret = DtsSetColorSpace(priv->dev, OUTPUT_MODE422_YUY2);
  503.     if (ret != BC_STS_SUCCESS) {
  504.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsSetColorSpace failed\n");
  505.         goto fail;
  506.     }
  507.     ret = DtsStartDecoder(priv->dev);
  508.     if (ret != BC_STS_SUCCESS) {
  509.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartDecoder failed\n");
  510.         goto fail;
  511.     }
  512.     ret = DtsStartCapture(priv->dev);
  513.     if (ret != BC_STS_SUCCESS) {
  514.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: DtsStartCapture failed\n");
  515.         goto fail;
  516.     }
  517.  
  518.     if (avctx->codec->id == AV_CODEC_ID_H264) {
  519.         priv->parser = av_parser_init(avctx->codec->id);
  520.         if (!priv->parser)
  521.             av_log(avctx, AV_LOG_WARNING,
  522.                    "Cannot open the h.264 parser! Interlaced h.264 content "
  523.                    "will not be detected reliably.\n");
  524.         priv->parser->flags = PARSER_FLAG_COMPLETE_FRAMES;
  525.     }
  526.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Init complete.\n");
  527.  
  528.     return 0;
  529.  
  530.  fail:
  531.     uninit(avctx);
  532.     return -1;
  533. }
  534.  
  535.  
  536. static inline CopyRet copy_frame(AVCodecContext *avctx,
  537.                                  BC_DTS_PROC_OUT *output,
  538.                                  void *data, int *got_frame)
  539. {
  540.     BC_STATUS ret;
  541.     BC_DTS_STATUS decoder_status = { 0, };
  542.     uint8_t trust_interlaced;
  543.     uint8_t interlaced;
  544.  
  545.     CHDContext *priv = avctx->priv_data;
  546.     int64_t pkt_pts  = AV_NOPTS_VALUE;
  547.     uint8_t pic_type = 0;
  548.  
  549.     uint8_t bottom_field = (output->PicInfo.flags & VDEC_FLAG_BOTTOMFIELD) ==
  550.                            VDEC_FLAG_BOTTOMFIELD;
  551.     uint8_t bottom_first = !!(output->PicInfo.flags & VDEC_FLAG_BOTTOM_FIRST);
  552.  
  553.     int width    = output->PicInfo.width;
  554.     int height   = output->PicInfo.height;
  555.     int bwidth;
  556.     uint8_t *src = output->Ybuff;
  557.     int sStride;
  558.     uint8_t *dst;
  559.     int dStride;
  560.  
  561.     if (output->PicInfo.timeStamp != 0) {
  562.         OpaqueList *node = opaque_list_pop(priv, output->PicInfo.timeStamp);
  563.         if (node) {
  564.             pkt_pts = node->reordered_opaque;
  565.             pic_type = node->pic_type;
  566.             av_free(node);
  567.         } else {
  568.             /*
  569.              * We will encounter a situation where a timestamp cannot be
  570.              * popped if a second field is being returned. In this case,
  571.              * each field has the same timestamp and the first one will
  572.              * cause it to be popped. To keep subsequent calculations
  573.              * simple, pic_type should be set a FIELD value - doesn't
  574.              * matter which, but I chose BOTTOM.
  575.              */
  576.             pic_type = PICT_BOTTOM_FIELD;
  577.         }
  578.         av_log(avctx, AV_LOG_VERBOSE, "output \"pts\": %"PRIu64"\n",
  579.                output->PicInfo.timeStamp);
  580.         av_log(avctx, AV_LOG_VERBOSE, "output picture type %d\n",
  581.                pic_type);
  582.     }
  583.  
  584.     ret = DtsGetDriverStatus(priv->dev, &decoder_status);
  585.     if (ret != BC_STS_SUCCESS) {
  586.         av_log(avctx, AV_LOG_ERROR,
  587.                "CrystalHD: GetDriverStatus failed: %u\n", ret);
  588.        return RET_ERROR;
  589.     }
  590.  
  591.     /*
  592.      * For most content, we can trust the interlaced flag returned
  593.      * by the hardware, but sometimes we can't. These are the
  594.      * conditions under which we can trust the flag:
  595.      *
  596.      * 1) It's not h.264 content
  597.      * 2) The UNKNOWN_SRC flag is not set
  598.      * 3) We know we're expecting a second field
  599.      * 4) The hardware reports this picture and the next picture
  600.      *    have the same picture number.
  601.      *
  602.      * Note that there can still be interlaced content that will
  603.      * fail this check, if the hardware hasn't decoded the next
  604.      * picture or if there is a corruption in the stream. (In either
  605.      * case a 0 will be returned for the next picture number)
  606.      */
  607.     trust_interlaced = avctx->codec->id != AV_CODEC_ID_H264 ||
  608.                        !(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) ||
  609.                        priv->need_second_field ||
  610.                        (decoder_status.picNumFlags & ~0x40000000) ==
  611.                        output->PicInfo.picture_number;
  612.  
  613.     /*
  614.      * If we got a false negative for trust_interlaced on the first field,
  615.      * we will realise our mistake here when we see that the picture number is that
  616.      * of the previous picture. We cannot recover the frame and should discard the
  617.      * second field to keep the correct number of output frames.
  618.      */
  619.     if (output->PicInfo.picture_number == priv->last_picture && !priv->need_second_field) {
  620.         av_log(avctx, AV_LOG_WARNING,
  621.                "Incorrectly guessed progressive frame. Discarding second field\n");
  622.         /* Returning without providing a picture. */
  623.         return RET_OK;
  624.     }
  625.  
  626.     interlaced = (output->PicInfo.flags & VDEC_FLAG_INTERLACED_SRC) &&
  627.                  trust_interlaced;
  628.  
  629.     if (!trust_interlaced && (decoder_status.picNumFlags & ~0x40000000) == 0) {
  630.         av_log(avctx, AV_LOG_VERBOSE,
  631.                "Next picture number unknown. Assuming progressive frame.\n");
  632.     }
  633.  
  634.     av_log(avctx, AV_LOG_VERBOSE, "Interlaced state: %d | trust_interlaced %d\n",
  635.            interlaced, trust_interlaced);
  636.  
  637.     if (priv->pic->data[0] && !priv->need_second_field)
  638.         av_frame_unref(priv->pic);
  639.  
  640.     priv->need_second_field = interlaced && !priv->need_second_field;
  641.  
  642.     if (!priv->pic->data[0]) {
  643.         if (ff_get_buffer(avctx, priv->pic, AV_GET_BUFFER_FLAG_REF) < 0)
  644.             return RET_ERROR;
  645.     }
  646.  
  647.     bwidth = av_image_get_linesize(avctx->pix_fmt, width, 0);
  648.     if (priv->is_70012) {
  649.         int pStride;
  650.  
  651.         if (width <= 720)
  652.             pStride = 720;
  653.         else if (width <= 1280)
  654.             pStride = 1280;
  655.         else pStride = 1920;
  656.         sStride = av_image_get_linesize(avctx->pix_fmt, pStride, 0);
  657.     } else {
  658.         sStride = bwidth;
  659.     }
  660.  
  661.     dStride = priv->pic->linesize[0];
  662.     dst     = priv->pic->data[0];
  663.  
  664.     av_log(priv->avctx, AV_LOG_VERBOSE, "CrystalHD: Copying out frame\n");
  665.  
  666.     if (interlaced) {
  667.         int dY = 0;
  668.         int sY = 0;
  669.  
  670.         height /= 2;
  671.         if (bottom_field) {
  672.             av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: bottom field\n");
  673.             dY = 1;
  674.         } else {
  675.             av_log(priv->avctx, AV_LOG_VERBOSE, "Interlaced: top field\n");
  676.             dY = 0;
  677.         }
  678.  
  679.         for (sY = 0; sY < height; dY++, sY++) {
  680.             memcpy(&(dst[dY * dStride]), &(src[sY * sStride]), bwidth);
  681.             dY++;
  682.         }
  683.     } else {
  684.         av_image_copy_plane(dst, dStride, src, sStride, bwidth, height);
  685.     }
  686.  
  687.     priv->pic->interlaced_frame = interlaced;
  688.     if (interlaced)
  689.         priv->pic->top_field_first = !bottom_first;
  690.  
  691.     priv->pic->pkt_pts = pkt_pts;
  692.  
  693.     if (!priv->need_second_field) {
  694.         *got_frame       = 1;
  695.         if ((ret = av_frame_ref(data, priv->pic)) < 0) {
  696.             return ret;
  697.         }
  698.     }
  699.  
  700.     /*
  701.      * Two types of PAFF content have been observed. One form causes the
  702.      * hardware to return a field pair and the other individual fields,
  703.      * even though the input is always individual fields. We must skip
  704.      * copying on the next decode() call to maintain pipeline length in
  705.      * the first case.
  706.      */
  707.     if (!interlaced && (output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) &&
  708.         (pic_type == PICT_TOP_FIELD || pic_type == PICT_BOTTOM_FIELD)) {
  709.         av_log(priv->avctx, AV_LOG_VERBOSE, "Fieldpair from two packets.\n");
  710.         return RET_SKIP_NEXT_COPY;
  711.     }
  712.  
  713.     /*
  714.      * The logic here is purely based on empirical testing with samples.
  715.      * If we need a second field, it could come from a second input packet,
  716.      * or it could come from the same field-pair input packet at the current
  717.      * field. In the first case, we should return and wait for the next time
  718.      * round to get the second field, while in the second case, we should
  719.      * ask the decoder for it immediately.
  720.      *
  721.      * Testing has shown that we are dealing with the fieldpair -> two fields
  722.      * case if the VDEC_FLAG_UNKNOWN_SRC is not set or if the input picture
  723.      * type was PICT_FRAME (in this second case, the flag might still be set)
  724.      */
  725.     return priv->need_second_field &&
  726.            (!(output->PicInfo.flags & VDEC_FLAG_UNKNOWN_SRC) ||
  727.             pic_type == PICT_FRAME) ?
  728.            RET_COPY_NEXT_FIELD : RET_OK;
  729. }
  730.  
  731.  
  732. static inline CopyRet receive_frame(AVCodecContext *avctx,
  733.                                     void *data, int *got_frame)
  734. {
  735.     BC_STATUS ret;
  736.     BC_DTS_PROC_OUT output = {
  737.         .PicInfo.width  = avctx->width,
  738.         .PicInfo.height = avctx->height,
  739.     };
  740.     CHDContext *priv = avctx->priv_data;
  741.     HANDLE dev       = priv->dev;
  742.  
  743.     *got_frame = 0;
  744.  
  745.     // Request decoded data from the driver
  746.     ret = DtsProcOutputNoCopy(dev, OUTPUT_PROC_TIMEOUT, &output);
  747.     if (ret == BC_STS_FMT_CHANGE) {
  748.         av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Initial format change\n");
  749.         avctx->width  = output.PicInfo.width;
  750.         avctx->height = output.PicInfo.height;
  751.         switch ( output.PicInfo.aspect_ratio ) {
  752.         case vdecAspectRatioSquare:
  753.             avctx->sample_aspect_ratio = (AVRational) {  1,  1};
  754.             break;
  755.         case vdecAspectRatio12_11:
  756.             avctx->sample_aspect_ratio = (AVRational) { 12, 11};
  757.             break;
  758.         case vdecAspectRatio10_11:
  759.             avctx->sample_aspect_ratio = (AVRational) { 10, 11};
  760.             break;
  761.         case vdecAspectRatio16_11:
  762.             avctx->sample_aspect_ratio = (AVRational) { 16, 11};
  763.             break;
  764.         case vdecAspectRatio40_33:
  765.             avctx->sample_aspect_ratio = (AVRational) { 40, 33};
  766.             break;
  767.         case vdecAspectRatio24_11:
  768.             avctx->sample_aspect_ratio = (AVRational) { 24, 11};
  769.             break;
  770.         case vdecAspectRatio20_11:
  771.             avctx->sample_aspect_ratio = (AVRational) { 20, 11};
  772.             break;
  773.         case vdecAspectRatio32_11:
  774.             avctx->sample_aspect_ratio = (AVRational) { 32, 11};
  775.             break;
  776.         case vdecAspectRatio80_33:
  777.             avctx->sample_aspect_ratio = (AVRational) { 80, 33};
  778.             break;
  779.         case vdecAspectRatio18_11:
  780.             avctx->sample_aspect_ratio = (AVRational) { 18, 11};
  781.             break;
  782.         case vdecAspectRatio15_11:
  783.             avctx->sample_aspect_ratio = (AVRational) { 15, 11};
  784.             break;
  785.         case vdecAspectRatio64_33:
  786.             avctx->sample_aspect_ratio = (AVRational) { 64, 33};
  787.             break;
  788.         case vdecAspectRatio160_99:
  789.             avctx->sample_aspect_ratio = (AVRational) {160, 99};
  790.             break;
  791.         case vdecAspectRatio4_3:
  792.             avctx->sample_aspect_ratio = (AVRational) {  4,  3};
  793.             break;
  794.         case vdecAspectRatio16_9:
  795.             avctx->sample_aspect_ratio = (AVRational) { 16,  9};
  796.             break;
  797.         case vdecAspectRatio221_1:
  798.             avctx->sample_aspect_ratio = (AVRational) {221,  1};
  799.             break;
  800.         }
  801.         return RET_COPY_AGAIN;
  802.     } else if (ret == BC_STS_SUCCESS) {
  803.         int copy_ret = -1;
  804.         if (output.PoutFlags & BC_POUT_FLAGS_PIB_VALID) {
  805.             if (priv->last_picture == -1) {
  806.                 /*
  807.                  * Init to one less, so that the incrementing code doesn't
  808.                  * need to be special-cased.
  809.                  */
  810.                 priv->last_picture = output.PicInfo.picture_number - 1;
  811.             }
  812.  
  813.             if (avctx->codec->id == AV_CODEC_ID_MPEG4 &&
  814.                 output.PicInfo.timeStamp == 0 && priv->bframe_bug) {
  815.                 av_log(avctx, AV_LOG_VERBOSE,
  816.                        "CrystalHD: Not returning packed frame twice.\n");
  817.                 priv->last_picture++;
  818.                 DtsReleaseOutputBuffs(dev, NULL, FALSE);
  819.                 return RET_COPY_AGAIN;
  820.             }
  821.  
  822.             print_frame_info(priv, &output);
  823.  
  824.             if (priv->last_picture + 1 < output.PicInfo.picture_number) {
  825.                 av_log(avctx, AV_LOG_WARNING,
  826.                        "CrystalHD: Picture Number discontinuity\n");
  827.                 /*
  828.                  * Have we lost frames? If so, we need to shrink the
  829.                  * pipeline length appropriately.
  830.                  *
  831.                  * XXX: I have no idea what the semantics of this situation
  832.                  * are so I don't even know if we've lost frames or which
  833.                  * ones.
  834.                  *
  835.                  * In any case, only warn the first time.
  836.                  */
  837.                priv->last_picture = output.PicInfo.picture_number - 1;
  838.             }
  839.  
  840.             copy_ret = copy_frame(avctx, &output, data, got_frame);
  841.             if (*got_frame > 0) {
  842.                 avctx->has_b_frames--;
  843.                 priv->last_picture++;
  844.                 av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Pipeline length: %u\n",
  845.                        avctx->has_b_frames);
  846.             }
  847.         } else {
  848.             /*
  849.              * An invalid frame has been consumed.
  850.              */
  851.             av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput succeeded with "
  852.                                         "invalid PIB\n");
  853.             avctx->has_b_frames--;
  854.             copy_ret = RET_OK;
  855.         }
  856.         DtsReleaseOutputBuffs(dev, NULL, FALSE);
  857.  
  858.         return copy_ret;
  859.     } else if (ret == BC_STS_BUSY) {
  860.         return RET_COPY_AGAIN;
  861.     } else {
  862.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: ProcOutput failed %d\n", ret);
  863.         return RET_ERROR;
  864.     }
  865. }
  866.  
  867.  
  868. static int decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
  869. {
  870.     BC_STATUS ret;
  871.     BC_DTS_STATUS decoder_status = { 0, };
  872.     CopyRet rec_ret;
  873.     CHDContext *priv   = avctx->priv_data;
  874.     HANDLE dev         = priv->dev;
  875.     uint8_t *in_data   = avpkt->data;
  876.     int len            = avpkt->size;
  877.     int free_data      = 0;
  878.     uint8_t pic_type   = 0;
  879.  
  880.     av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: decode_frame\n");
  881.  
  882.     if (avpkt->size == 7 && !priv->bframe_bug) {
  883.         /*
  884.          * The use of a drop frame triggers the bug
  885.          */
  886.         av_log(avctx, AV_LOG_INFO,
  887.                "CrystalHD: Enabling work-around for packed b-frame bug\n");
  888.         priv->bframe_bug = 1;
  889.     } else if (avpkt->size == 8 && priv->bframe_bug) {
  890.         /*
  891.          * Delay frames don't trigger the bug
  892.          */
  893.         av_log(avctx, AV_LOG_INFO,
  894.                "CrystalHD: Disabling work-around for packed b-frame bug\n");
  895.         priv->bframe_bug = 0;
  896.     }
  897.  
  898.     if (len) {
  899.         int32_t tx_free = (int32_t)DtsTxFreeSize(dev);
  900.  
  901.         if (priv->parser) {
  902.             int ret = 0;
  903.  
  904.             if (priv->bsfc) {
  905.                 ret = av_bitstream_filter_filter(priv->bsfc, avctx, NULL,
  906.                                                  &in_data, &len,
  907.                                                  avpkt->data, len, 0);
  908.             }
  909.             free_data = ret > 0;
  910.  
  911.             if (ret >= 0) {
  912.                 uint8_t *pout;
  913.                 int psize;
  914.                 int index;
  915.                 H264Context *h = priv->parser->priv_data;
  916.  
  917.                 index = av_parser_parse2(priv->parser, avctx, &pout, &psize,
  918.                                          in_data, len, avctx->pkt->pts,
  919.                                          avctx->pkt->dts, 0);
  920.                 if (index < 0) {
  921.                     av_log(avctx, AV_LOG_WARNING,
  922.                            "CrystalHD: Failed to parse h.264 packet to "
  923.                            "detect interlacing.\n");
  924.                 } else if (index != len) {
  925.                     av_log(avctx, AV_LOG_WARNING,
  926.                            "CrystalHD: Failed to parse h.264 packet "
  927.                            "completely. Interlaced frames may be "
  928.                            "incorrectly detected.\n");
  929.                 } else {
  930.                     av_log(avctx, AV_LOG_VERBOSE,
  931.                            "CrystalHD: parser picture type %d\n",
  932.                            h->picture_structure);
  933.                     pic_type = h->picture_structure;
  934.                 }
  935.             } else {
  936.                 av_log(avctx, AV_LOG_WARNING,
  937.                        "CrystalHD: mp4toannexb filter failed to filter "
  938.                        "packet. Interlaced frames may be incorrectly "
  939.                        "detected.\n");
  940.             }
  941.         }
  942.  
  943.         if (len < tx_free - 1024) {
  944.             /*
  945.              * Despite being notionally opaque, either libcrystalhd or
  946.              * the hardware itself will mangle pts values that are too
  947.              * small or too large. The docs claim it should be in units
  948.              * of 100ns. Given that we're nominally dealing with a black
  949.              * box on both sides, any transform we do has no guarantee of
  950.              * avoiding mangling so we need to build a mapping to values
  951.              * we know will not be mangled.
  952.              */
  953.             uint64_t pts = opaque_list_push(priv, avctx->pkt->pts, pic_type);
  954.             if (!pts) {
  955.                 if (free_data) {
  956.                     av_freep(&in_data);
  957.                 }
  958.                 return AVERROR(ENOMEM);
  959.             }
  960.             av_log(priv->avctx, AV_LOG_VERBOSE,
  961.                    "input \"pts\": %"PRIu64"\n", pts);
  962.             ret = DtsProcInput(dev, in_data, len, pts, 0);
  963.             if (free_data) {
  964.                 av_freep(&in_data);
  965.             }
  966.             if (ret == BC_STS_BUSY) {
  967.                 av_log(avctx, AV_LOG_WARNING,
  968.                        "CrystalHD: ProcInput returned busy\n");
  969.                 usleep(BASE_WAIT);
  970.                 return AVERROR(EBUSY);
  971.             } else if (ret != BC_STS_SUCCESS) {
  972.                 av_log(avctx, AV_LOG_ERROR,
  973.                        "CrystalHD: ProcInput failed: %u\n", ret);
  974.                 return -1;
  975.             }
  976.             avctx->has_b_frames++;
  977.         } else {
  978.             av_log(avctx, AV_LOG_WARNING, "CrystalHD: Input buffer full\n");
  979.             len = 0; // We didn't consume any bytes.
  980.         }
  981.     } else {
  982.         av_log(avctx, AV_LOG_INFO, "CrystalHD: No more input data\n");
  983.     }
  984.  
  985.     if (priv->skip_next_output) {
  986.         av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Skipping next output.\n");
  987.         priv->skip_next_output = 0;
  988.         avctx->has_b_frames--;
  989.         return len;
  990.     }
  991.  
  992.     ret = DtsGetDriverStatus(dev, &decoder_status);
  993.     if (ret != BC_STS_SUCCESS) {
  994.         av_log(avctx, AV_LOG_ERROR, "CrystalHD: GetDriverStatus failed\n");
  995.         return -1;
  996.     }
  997.  
  998.     /*
  999.      * No frames ready. Don't try to extract.
  1000.      *
  1001.      * Empirical testing shows that ReadyListCount can be a damn lie,
  1002.      * and ProcOut still fails when count > 0. The same testing showed
  1003.      * that two more iterations were needed before ProcOutput would
  1004.      * succeed.
  1005.      */
  1006.     if (priv->output_ready < 2) {
  1007.         if (decoder_status.ReadyListCount != 0)
  1008.             priv->output_ready++;
  1009.         usleep(BASE_WAIT);
  1010.         av_log(avctx, AV_LOG_INFO, "CrystalHD: Filling pipeline.\n");
  1011.         return len;
  1012.     } else if (decoder_status.ReadyListCount == 0) {
  1013.         /*
  1014.          * After the pipeline is established, if we encounter a lack of frames
  1015.          * that probably means we're not giving the hardware enough time to
  1016.          * decode them, so start increasing the wait time at the end of a
  1017.          * decode call.
  1018.          */
  1019.         usleep(BASE_WAIT);
  1020.         priv->decode_wait += WAIT_UNIT;
  1021.         av_log(avctx, AV_LOG_INFO, "CrystalHD: No frames ready. Returning\n");
  1022.         return len;
  1023.     }
  1024.  
  1025.     do {
  1026.         rec_ret = receive_frame(avctx, data, got_frame);
  1027.         if (rec_ret == RET_OK && *got_frame == 0) {
  1028.             /*
  1029.              * This case is for when the encoded fields are stored
  1030.              * separately and we get a separate avpkt for each one. To keep
  1031.              * the pipeline stable, we should return nothing and wait for
  1032.              * the next time round to grab the second field.
  1033.              * H.264 PAFF is an example of this.
  1034.              */
  1035.             av_log(avctx, AV_LOG_VERBOSE, "Returning after first field.\n");
  1036.             avctx->has_b_frames--;
  1037.         } else if (rec_ret == RET_COPY_NEXT_FIELD) {
  1038.             /*
  1039.              * This case is for when the encoded fields are stored in a
  1040.              * single avpkt but the hardware returns then separately. Unless
  1041.              * we grab the second field before returning, we'll slip another
  1042.              * frame in the pipeline and if that happens a lot, we're sunk.
  1043.              * So we have to get that second field now.
  1044.              * Interlaced mpeg2 and vc1 are examples of this.
  1045.              */
  1046.             av_log(avctx, AV_LOG_VERBOSE, "Trying to get second field.\n");
  1047.             while (1) {
  1048.                 usleep(priv->decode_wait);
  1049.                 ret = DtsGetDriverStatus(dev, &decoder_status);
  1050.                 if (ret == BC_STS_SUCCESS &&
  1051.                     decoder_status.ReadyListCount > 0) {
  1052.                     rec_ret = receive_frame(avctx, data, got_frame);
  1053.                     if ((rec_ret == RET_OK && *got_frame > 0) ||
  1054.                         rec_ret == RET_ERROR)
  1055.                         break;
  1056.                 }
  1057.             }
  1058.             av_log(avctx, AV_LOG_VERBOSE, "CrystalHD: Got second field.\n");
  1059.         } else if (rec_ret == RET_SKIP_NEXT_COPY) {
  1060.             /*
  1061.              * Two input packets got turned into a field pair. Gawd.
  1062.              */
  1063.             av_log(avctx, AV_LOG_VERBOSE,
  1064.                    "Don't output on next decode call.\n");
  1065.             priv->skip_next_output = 1;
  1066.         }
  1067.         /*
  1068.          * If rec_ret == RET_COPY_AGAIN, that means that either we just handled
  1069.          * a FMT_CHANGE event and need to go around again for the actual frame,
  1070.          * we got a busy status and need to try again, or we're dealing with
  1071.          * packed b-frames, where the hardware strangely returns the packed
  1072.          * p-frame twice. We choose to keep the second copy as it carries the
  1073.          * valid pts.
  1074.          */
  1075.     } while (rec_ret == RET_COPY_AGAIN);
  1076.     usleep(priv->decode_wait);
  1077.     return len;
  1078. }
  1079.  
  1080.  
  1081. #if CONFIG_H264_CRYSTALHD_DECODER
  1082. static AVClass h264_class = {
  1083.     "h264_crystalhd",
  1084.     av_default_item_name,
  1085.     options,
  1086.     LIBAVUTIL_VERSION_INT,
  1087. };
  1088.  
  1089. AVCodec ff_h264_crystalhd_decoder = {
  1090.     .name           = "h264_crystalhd",
  1091.     .long_name      = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (CrystalHD acceleration)"),
  1092.     .type           = AVMEDIA_TYPE_VIDEO,
  1093.     .id             = AV_CODEC_ID_H264,
  1094.     .priv_data_size = sizeof(CHDContext),
  1095.     .init           = init,
  1096.     .close          = uninit,
  1097.     .decode         = decode,
  1098.     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
  1099.     .flush          = flush,
  1100.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1101.     .priv_class     = &h264_class,
  1102. };
  1103. #endif
  1104.  
  1105. #if CONFIG_MPEG2_CRYSTALHD_DECODER
  1106. static AVClass mpeg2_class = {
  1107.     "mpeg2_crystalhd",
  1108.     av_default_item_name,
  1109.     options,
  1110.     LIBAVUTIL_VERSION_INT,
  1111. };
  1112.  
  1113. AVCodec ff_mpeg2_crystalhd_decoder = {
  1114.     .name           = "mpeg2_crystalhd",
  1115.     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-2 Video (CrystalHD acceleration)"),
  1116.     .type           = AVMEDIA_TYPE_VIDEO,
  1117.     .id             = AV_CODEC_ID_MPEG2VIDEO,
  1118.     .priv_data_size = sizeof(CHDContext),
  1119.     .init           = init,
  1120.     .close          = uninit,
  1121.     .decode         = decode,
  1122.     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
  1123.     .flush          = flush,
  1124.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1125.     .priv_class     = &mpeg2_class,
  1126. };
  1127. #endif
  1128.  
  1129. #if CONFIG_MPEG4_CRYSTALHD_DECODER
  1130. static AVClass mpeg4_class = {
  1131.     "mpeg4_crystalhd",
  1132.     av_default_item_name,
  1133.     options,
  1134.     LIBAVUTIL_VERSION_INT,
  1135. };
  1136.  
  1137. AVCodec ff_mpeg4_crystalhd_decoder = {
  1138.     .name           = "mpeg4_crystalhd",
  1139.     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 (CrystalHD acceleration)"),
  1140.     .type           = AVMEDIA_TYPE_VIDEO,
  1141.     .id             = AV_CODEC_ID_MPEG4,
  1142.     .priv_data_size = sizeof(CHDContext),
  1143.     .init           = init,
  1144.     .close          = uninit,
  1145.     .decode         = decode,
  1146.     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
  1147.     .flush          = flush,
  1148.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1149.     .priv_class     = &mpeg4_class,
  1150. };
  1151. #endif
  1152.  
  1153. #if CONFIG_MSMPEG4_CRYSTALHD_DECODER
  1154. static AVClass msmpeg4_class = {
  1155.     "msmpeg4_crystalhd",
  1156.     av_default_item_name,
  1157.     options,
  1158.     LIBAVUTIL_VERSION_INT,
  1159. };
  1160.  
  1161. AVCodec ff_msmpeg4_crystalhd_decoder = {
  1162.     .name           = "msmpeg4_crystalhd",
  1163.     .long_name      = NULL_IF_CONFIG_SMALL("MPEG-4 Part 2 Microsoft variant version 3 (CrystalHD acceleration)"),
  1164.     .type           = AVMEDIA_TYPE_VIDEO,
  1165.     .id             = AV_CODEC_ID_MSMPEG4V3,
  1166.     .priv_data_size = sizeof(CHDContext),
  1167.     .init           = init,
  1168.     .close          = uninit,
  1169.     .decode         = decode,
  1170.     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
  1171.     .flush          = flush,
  1172.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1173.     .priv_class     = &msmpeg4_class,
  1174. };
  1175. #endif
  1176.  
  1177. #if CONFIG_VC1_CRYSTALHD_DECODER
  1178. static AVClass vc1_class = {
  1179.     "vc1_crystalhd",
  1180.     av_default_item_name,
  1181.     options,
  1182.     LIBAVUTIL_VERSION_INT,
  1183. };
  1184.  
  1185. AVCodec ff_vc1_crystalhd_decoder = {
  1186.     .name           = "vc1_crystalhd",
  1187.     .long_name      = NULL_IF_CONFIG_SMALL("SMPTE VC-1 (CrystalHD acceleration)"),
  1188.     .type           = AVMEDIA_TYPE_VIDEO,
  1189.     .id             = AV_CODEC_ID_VC1,
  1190.     .priv_data_size = sizeof(CHDContext),
  1191.     .init           = init,
  1192.     .close          = uninit,
  1193.     .decode         = decode,
  1194.     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
  1195.     .flush          = flush,
  1196.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1197.     .priv_class     = &vc1_class,
  1198. };
  1199. #endif
  1200.  
  1201. #if CONFIG_WMV3_CRYSTALHD_DECODER
  1202. static AVClass wmv3_class = {
  1203.     "wmv3_crystalhd",
  1204.     av_default_item_name,
  1205.     options,
  1206.     LIBAVUTIL_VERSION_INT,
  1207. };
  1208.  
  1209. AVCodec ff_wmv3_crystalhd_decoder = {
  1210.     .name           = "wmv3_crystalhd",
  1211.     .long_name      = NULL_IF_CONFIG_SMALL("Windows Media Video 9 (CrystalHD acceleration)"),
  1212.     .type           = AVMEDIA_TYPE_VIDEO,
  1213.     .id             = AV_CODEC_ID_WMV3,
  1214.     .priv_data_size = sizeof(CHDContext),
  1215.     .init           = init,
  1216.     .close          = uninit,
  1217.     .decode         = decode,
  1218.     .capabilities   = CODEC_CAP_DR1 | CODEC_CAP_DELAY,
  1219.     .flush          = flush,
  1220.     .pix_fmts       = (const enum AVPixelFormat[]){AV_PIX_FMT_YUYV422, AV_PIX_FMT_NONE},
  1221.     .priv_class     = &wmv3_class,
  1222. };
  1223. #endif
  1224.