/* * Intel MediaSDK QSV based H.264 / HEVC decoder * * copyright (c) 2013 Luca Barbato * copyright (c) 2015 Anton Khirnov * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include "libavutil/common.h" #include "libavutil/fifo.h" #include "libavutil/opt.h" #include "avcodec.h" #include "internal.h" #include "qsvdec.h" enum LoadPlugin { LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_SW, }; typedef struct QSVH2645Context { AVClass *class; QSVContext qsv; int load_plugin; // the filter for converting to Annex B AVBitStreamFilterContext *bsf; } QSVH2645Context; static av_cold int qsv_decode_close(AVCodecContext *avctx) { QSVH2645Context *s = avctx->priv_data; ff_qsv_decode_close(&s->qsv); av_bitstream_filter_close(s->bsf); return 0; } static av_cold int qsv_decode_init(AVCodecContext *avctx) { QSVH2645Context *s = avctx->priv_data; int ret; if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) { static const char *uid_hevcenc_sw = "15dd936825ad475ea34e35f3f54217a6"; if (s->qsv.load_plugins[0]) { av_log(avctx, AV_LOG_WARNING, "load_plugins is not empty, but load_plugin is not set to 'none'." "The load_plugin value will be ignored.\n"); } else { av_freep(&s->qsv.load_plugins); s->qsv.load_plugins = av_strdup(uid_hevcenc_sw); if (!s->qsv.load_plugins) return AVERROR(ENOMEM); } } if (avctx->codec_id == AV_CODEC_ID_H264) s->bsf = av_bitstream_filter_init("h264_mp4toannexb"); else s->bsf = av_bitstream_filter_init("hevc_mp4toannexb"); if (!s->bsf) { ret = AVERROR(ENOMEM); goto fail; } return 0; fail: qsv_decode_close(avctx); return ret; } static int qsv_decode_frame(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) { QSVH2645Context *s = avctx->priv_data; AVFrame *frame = data; int ret; uint8_t *p_filtered = NULL; int n_filtered = NULL; AVPacket pkt_filtered = { 0 }; if (avpkt->size) { if (avpkt->size > 3 && !avpkt->data[0] && !avpkt->data[1] && !avpkt->data[2] && 1==avpkt->data[3]) { /* we already have annex-b prefix */ return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt); } else { /* no annex-b prefix. try to restore: */ ret = av_bitstream_filter_filter(s->bsf, avctx, "private_spspps_buf", &p_filtered, &n_filtered, avpkt->data, avpkt->size, 0); if (ret>=0) { pkt_filtered.pts = avpkt->pts; pkt_filtered.data = p_filtered; pkt_filtered.size = n_filtered; ret = ff_qsv_decode(avctx, &s->qsv, frame, got_frame, &pkt_filtered); if (p_filtered != avpkt->data) av_free(p_filtered); return ret > 0 ? avpkt->size : ret; } } } return ff_qsv_decode(avctx, &s->qsv, frame, got_frame, avpkt); } static void qsv_decode_flush(AVCodecContext *avctx) { // QSVH2645Context *s = avctx->priv_data; /* TODO: flush qsv engine if necessary */ } #define OFFSET(x) offsetof(QSVH2645Context, x) #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM #if CONFIG_HEVC_QSV_DECODER AVHWAccel ff_hevc_qsv_hwaccel = { .name = "hevc_qsv", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_HEVC, .pix_fmt = AV_PIX_FMT_QSV, }; static const AVOption hevc_options[] = { { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VD }, { "load_plugin", "A user plugin to load in an internal session", OFFSET(load_plugin), AV_OPT_TYPE_INT, { .i64 = LOAD_PLUGIN_HEVC_SW }, LOAD_PLUGIN_NONE, LOAD_PLUGIN_HEVC_SW, VD, "load_plugin" }, { "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" }, { "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" }, { "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session", OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD }, { NULL }, }; static const AVClass hevc_class = { .class_name = "hevc_qsv", .item_name = av_default_item_name, .option = hevc_options, .version = LIBAVUTIL_VERSION_INT, }; AVCodec ff_hevc_qsv_decoder = { .name = "hevc_qsv", .long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"), .priv_data_size = sizeof(QSVH2645Context), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_HEVC, .init = qsv_decode_init, .decode = qsv_decode_frame, .flush = qsv_decode_flush, .close = qsv_decode_close, .capabilities = CODEC_CAP_DELAY | CODEC_CAP_DR1, .priv_class = &hevc_class, }; #endif #if CONFIG_H264_QSV_DECODER AVHWAccel ff_h264_qsv_hwaccel = { .name = "h264_qsv", .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_H264, .pix_fmt = AV_PIX_FMT_QSV, }; static const AVOption options[] = { { "async_depth", "Internal parallelization depth, the higher the value the higher the latency.", OFFSET(qsv.async_depth), AV_OPT_TYPE_INT, { .i64 = ASYNC_DEPTH_DEFAULT }, 0, INT_MAX, VD }, { NULL }, }; static const AVClass class = { .class_name = "h264_qsv", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; AVCodec ff_h264_qsv_decoder = { .name = "h264_qsv", .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"), .priv_data_size = sizeof(QSVH2645Context), .type = AVMEDIA_TYPE_VIDEO, .id = AV_CODEC_ID_H264, .init = qsv_decode_init, .decode = qsv_decode_frame, .flush = qsv_decode_flush, .close = qsv_decode_close, .capabilities = CODEC_CAP_DELAY | CODEC_CAP_DR1, .priv_class = &class, }; #endif