mirror of
https://github.com/FFmpeg/FFmpeg.git
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289 lines
9.1 KiB
C
289 lines
9.1 KiB
C
/*
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* Intel MediaSDK QSV based H.264 / HEVC decoder
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*
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* copyright (c) 2013 Luca Barbato
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* copyright (c) 2015 Anton Khirnov
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include <string.h>
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#include <mfx/mfxvideo.h>
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#include "libavutil/common.h"
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#include "libavutil/fifo.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "qsv_internal.h"
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#include "qsvdec.h"
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#include "qsv.h"
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enum LoadPlugin {
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LOAD_PLUGIN_NONE,
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LOAD_PLUGIN_HEVC_SW,
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};
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typedef struct QSVH2645Context {
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AVClass *class;
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QSVContext qsv;
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int load_plugin;
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// the filter for converting to Annex B
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AVBitStreamFilterContext *bsf;
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AVFifoBuffer *packet_fifo;
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AVPacket input_ref;
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AVPacket pkt_filtered;
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uint8_t *filtered_data;
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} QSVH2645Context;
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static void qsv_clear_buffers(QSVH2645Context *s)
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{
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AVPacket pkt;
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while (av_fifo_size(s->packet_fifo) >= sizeof(pkt)) {
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av_fifo_generic_read(s->packet_fifo, &pkt, sizeof(pkt), NULL);
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av_packet_unref(&pkt);
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}
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if (s->filtered_data != s->input_ref.data)
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av_freep(&s->filtered_data);
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s->filtered_data = NULL;
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av_packet_unref(&s->input_ref);
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}
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static av_cold int qsv_decode_close(AVCodecContext *avctx)
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{
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QSVH2645Context *s = avctx->priv_data;
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ff_qsv_decode_close(&s->qsv);
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qsv_clear_buffers(s);
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av_fifo_free(s->packet_fifo);
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av_bitstream_filter_close(s->bsf);
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return 0;
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}
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static av_cold int qsv_decode_init(AVCodecContext *avctx)
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{
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QSVH2645Context *s = avctx->priv_data;
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int ret;
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if (avctx->codec_id == AV_CODEC_ID_HEVC && s->load_plugin != LOAD_PLUGIN_NONE) {
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static const char *uid_hevcenc_sw = "15dd936825ad475ea34e35f3f54217a6";
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if (s->qsv.load_plugins[0]) {
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av_log(avctx, AV_LOG_WARNING,
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"load_plugins is not empty, but load_plugin is not set to 'none'."
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"The load_plugin value will be ignored.\n");
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} else {
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av_freep(&s->qsv.load_plugins);
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s->qsv.load_plugins = av_strdup(uid_hevcenc_sw);
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if (!s->qsv.load_plugins)
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return AVERROR(ENOMEM);
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}
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}
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s->packet_fifo = av_fifo_alloc(sizeof(AVPacket));
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if (!s->packet_fifo) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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if (avctx->codec_id == AV_CODEC_ID_H264)
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s->bsf = av_bitstream_filter_init("h264_mp4toannexb");
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else
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s->bsf = av_bitstream_filter_init("hevc_mp4toannexb");
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if (!s->bsf) {
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ret = AVERROR(ENOMEM);
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goto fail;
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}
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s->qsv.iopattern = MFX_IOPATTERN_OUT_SYSTEM_MEMORY;
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return 0;
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fail:
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qsv_decode_close(avctx);
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return ret;
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}
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static int qsv_decode_frame(AVCodecContext *avctx, void *data,
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int *got_frame, AVPacket *avpkt)
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{
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QSVH2645Context *s = avctx->priv_data;
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AVFrame *frame = data;
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int ret;
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/* buffer the input packet */
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if (avpkt->size) {
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AVPacket input_ref = { 0 };
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if (av_fifo_space(s->packet_fifo) < sizeof(input_ref)) {
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ret = av_fifo_realloc2(s->packet_fifo,
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av_fifo_size(s->packet_fifo) + sizeof(input_ref));
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if (ret < 0)
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return ret;
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}
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ret = av_packet_ref(&input_ref, avpkt);
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if (ret < 0)
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return ret;
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av_fifo_generic_write(s->packet_fifo, &input_ref, sizeof(input_ref), NULL);
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}
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/* process buffered data */
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while (!*got_frame) {
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/* prepare the input data -- convert to Annex B if needed */
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if (s->pkt_filtered.size <= 0) {
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int size;
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/* no more data */
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if (av_fifo_size(s->packet_fifo) < sizeof(AVPacket))
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return avpkt->size ? avpkt->size : ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, avpkt);
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if (s->filtered_data != s->input_ref.data)
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av_freep(&s->filtered_data);
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s->filtered_data = NULL;
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av_packet_unref(&s->input_ref);
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av_fifo_generic_read(s->packet_fifo, &s->input_ref, sizeof(s->input_ref), NULL);
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ret = av_bitstream_filter_filter(s->bsf, avctx, NULL,
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&s->filtered_data, &size,
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s->input_ref.data, s->input_ref.size, 0);
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if (ret < 0) {
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s->filtered_data = s->input_ref.data;
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size = s->input_ref.size;
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}
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s->pkt_filtered = s->input_ref;
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s->pkt_filtered.data = s->filtered_data;
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s->pkt_filtered.size = size;
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}
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ret = ff_qsv_process_data(avctx, &s->qsv, frame, got_frame, &s->pkt_filtered);
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if (ret < 0)
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return ret;
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s->pkt_filtered.size -= ret;
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s->pkt_filtered.data += ret;
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}
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return avpkt->size;
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}
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static void qsv_decode_flush(AVCodecContext *avctx)
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{
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QSVH2645Context *s = avctx->priv_data;
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qsv_clear_buffers(s);
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ff_qsv_decode_flush(avctx, &s->qsv);
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}
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#define OFFSET(x) offsetof(QSVH2645Context, x)
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#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
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#if CONFIG_HEVC_QSV_DECODER
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AVHWAccel ff_hevc_qsv_hwaccel = {
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.name = "hevc_qsv",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_HEVC,
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.pix_fmt = AV_PIX_FMT_QSV,
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};
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static const AVOption hevc_options[] = {
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{ "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 },
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{ "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" },
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{ "none", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_NONE }, 0, 0, VD, "load_plugin" },
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{ "hevc_sw", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = LOAD_PLUGIN_HEVC_SW }, 0, 0, VD, "load_plugin" },
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{ "load_plugins", "A :-separate list of hexadecimal plugin UIDs to load in an internal session",
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OFFSET(qsv.load_plugins), AV_OPT_TYPE_STRING, { .str = "" }, 0, 0, VD },
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{ NULL },
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};
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static const AVClass hevc_class = {
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.class_name = "hevc_qsv",
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.item_name = av_default_item_name,
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.option = hevc_options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVCodec ff_hevc_qsv_decoder = {
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.name = "hevc_qsv",
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.long_name = NULL_IF_CONFIG_SMALL("HEVC (Intel Quick Sync Video acceleration)"),
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.priv_data_size = sizeof(QSVH2645Context),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_HEVC,
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.init = qsv_decode_init,
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.decode = qsv_decode_frame,
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.flush = qsv_decode_flush,
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.close = qsv_decode_close,
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.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
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.priv_class = &hevc_class,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
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AV_PIX_FMT_QSV,
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AV_PIX_FMT_NONE },
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};
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#endif
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#if CONFIG_H264_QSV_DECODER
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AVHWAccel ff_h264_qsv_hwaccel = {
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.name = "h264_qsv",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_H264,
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.pix_fmt = AV_PIX_FMT_QSV,
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};
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static const AVOption options[] = {
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{ "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 },
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{ NULL },
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};
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static const AVClass class = {
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.class_name = "h264_qsv",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVCodec ff_h264_qsv_decoder = {
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.name = "h264_qsv",
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.long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (Intel Quick Sync Video acceleration)"),
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.priv_data_size = sizeof(QSVH2645Context),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_H264,
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.init = qsv_decode_init,
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.decode = qsv_decode_frame,
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.flush = qsv_decode_flush,
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.close = qsv_decode_close,
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.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
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.priv_class = &class,
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.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_NV12,
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AV_PIX_FMT_QSV,
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AV_PIX_FMT_NONE },
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};
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#endif
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