From 41d47ea85fb4ad9cfb5c2dc808a46bc1d57f3986 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Tue, 16 Jun 2015 18:22:11 +0200 Subject: lavc: add Intel libmfx-based HEVC decoder. --- libavcodec/qsvdec_h2645.c | 282 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 282 insertions(+) create mode 100644 libavcodec/qsvdec_h2645.c (limited to 'libavcodec/qsvdec_h2645.c') diff --git a/libavcodec/qsvdec_h2645.c b/libavcodec/qsvdec_h2645.c new file mode 100644 index 0000000000..99bce94639 --- /dev/null +++ b/libavcodec/qsvdec_h2645.c @@ -0,0 +1,282 @@ +/* + * Intel MediaSDK QSV based H.264 / HEVC decoder + * + * copyright (c) 2013 Luca Barbato + * copyright (c) 2015 Anton Khirnov + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; 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 "qsv_internal.h" +#include "qsvdec.h" +#include "qsv.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; + + AVFifoBuffer *packet_fifo; + + AVPacket input_ref; + AVPacket pkt_filtered; + uint8_t *filtered_data; +} QSVH2645Context; + +static void qsv_clear_buffers(QSVH2645Context *s) +{ + AVPacket pkt; + while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) { + av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL); + av_packet_unref(&pkt); + } + + if (s->filtered_data != s->input_ref.data) + av_freep(&s->filtered_data); + s->filtered_data = NULL; + av_packet_unref(&s->input_ref); +} + +static av_cold int qsv_decode_close(AVCodecContext *avctx) +{ + QSVH2645Context *s = avctx->priv_data; + + ff_qsv_decode_close(&s->qsv); + + qsv_clear_buffers(s); + + av_fifo_free(s->packet_fifo); + + 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); + } + } + + s->packet_fifo = av_fifo_alloc(sizeof(AVPacket)); + if (!s->packet_fifo) { + ret = AVERROR(ENOMEM); + goto fail; + } + + 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; + } + + s->qsv.iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY; + + 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; + + /* buffer the input packet */ + if (avpkt->size) { + AVPacket input_ref = { 0 }; + + if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) { + ret = av_fifo_realloc2(s->packet_fifo, + av_fifo_size(s->packet_fifo) + sizeof(input_ref)); + if (ret < 0) + return ret; + } + + ret = av_packet_ref(&input_ref, avpkt); + if (ret < 0) + return ret; + av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL); + } + + /* process buffered data */ + while (!*got_frame) { + /* prepare the input data -- convert to Annex B if needed */ + if (s->pkt_filtered.size <= 0) { + int size; + + /* no more data */ + if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket)) + return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt); + + if (s->filtered_data != s->input_ref.data) + av_freep(&s->filtered_data); + s->filtered_data = NULL; + av_packet_unref(&s->input_ref); + + av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL); + ret = av_bitstream_filter_filter(s->bsf, avctx, NULL, + &s->filtered_data, &size, + s->input_ref.data, s->input_ref.size, 0); + if (ret < 0) { + s->filtered_data = s->input_ref.data; + size = s->input_ref.size; + } + s->pkt_filtered = s->input_ref; + s->pkt_filtered.data = s->filtered_data; + s->pkt_filtered.size = size; + } + + ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->pkt_filtered); + if (ret < 0) + return ret; + + s->pkt_filtered.size -= ret; + s->pkt_filtered.data += ret; + } + + return avpkt->size; +} + +static void qsv_decode_flush(AVCodecContext *avctx) +{ + QSVH2645Context *s = avctx->priv_data; + + qsv_clear_buffers(s); + ff_qsv_decode_flush(avctx, &s->qsv); +} + +#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, + .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, + .priv_class = &class, +}; +#endif -- cgit v1.2.3