mirror of https://github.com/mpv-player/mpv
825 lines
24 KiB
C
825 lines
24 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <time.h>
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#include <stdbool.h>
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#include <sys/types.h>
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#include <libavutil/common.h>
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#include <libavutil/opt.h>
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#include <libavutil/intreadwrite.h>
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#include <libavutil/pixdesc.h>
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#include "compat/libav.h"
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#include "talloc.h"
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#include "config.h"
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#include "common/msg.h"
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#include "options/options.h"
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#include "bstr/bstr.h"
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#include "common/av_opts.h"
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#include "common/av_common.h"
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#include "common/codecs.h"
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#include "compat/mpbswap.h"
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#include "video/fmt-conversion.h"
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#include "vd.h"
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#include "video/img_format.h"
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#include "video/mp_image_pool.h"
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#include "video/filter/vf.h"
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#include "video/decode/dec_video.h"
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#include "demux/stheader.h"
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#include "demux/packet.h"
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#include "video/csputils.h"
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#include "lavc.h"
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#if AVPALETTE_SIZE != MP_PALETTE_SIZE
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#error palette too large, adapt video/mp_image.h:MP_PALETTE_SIZE
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#endif
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#include "options/m_option.h"
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static void init_avctx(struct dec_video *vd, const char *decoder,
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struct vd_lavc_hwdec *hwdec);
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static void uninit_avctx(struct dec_video *vd);
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static void setup_refcounting_hw(struct AVCodecContext *s);
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static enum AVPixelFormat get_format_hwdec(struct AVCodecContext *avctx,
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const enum AVPixelFormat *pix_fmt);
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static void uninit(struct dec_video *vd);
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#define OPT_BASE_STRUCT struct MPOpts
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const m_option_t lavc_decode_opts_conf[] = {
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OPT_FLAG_CONSTANTS("fast", lavc_param.fast, 0, 0, CODEC_FLAG2_FAST),
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OPT_FLAG("show-all", lavc_param.show_all, 0),
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OPT_STRING("skiploopfilter", lavc_param.skip_loop_filter_str, 0),
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OPT_STRING("skipidct", lavc_param.skip_idct_str, 0),
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OPT_STRING("skipframe", lavc_param.skip_frame_str, 0),
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OPT_INTRANGE("threads", lavc_param.threads, 0, 0, 16),
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OPT_FLAG_CONSTANTS("bitexact", lavc_param.bitexact, 0, 0, CODEC_FLAG_BITEXACT),
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OPT_FLAG("check-hw-profile", lavc_param.check_hw_profile, 0),
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OPT_STRING("o", lavc_param.avopt, 0),
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{NULL, NULL, 0, 0, 0, 0, NULL}
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};
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const struct vd_lavc_hwdec mp_vd_lavc_vdpau;
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const struct vd_lavc_hwdec mp_vd_lavc_vdpau_old;
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const struct vd_lavc_hwdec mp_vd_lavc_vda;
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const struct vd_lavc_hwdec mp_vd_lavc_vaapi;
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const struct vd_lavc_hwdec mp_vd_lavc_vaapi_copy;
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static const struct vd_lavc_hwdec *hwdec_list[] = {
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#if HAVE_VDPAU_HWACCEL
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&mp_vd_lavc_vdpau,
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#endif
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#if HAVE_VDPAU_DECODER
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&mp_vd_lavc_vdpau_old,
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#endif
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#if HAVE_VDA_HWACCEL
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&mp_vd_lavc_vda,
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#endif
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#if HAVE_VAAPI_HWACCEL
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&mp_vd_lavc_vaapi,
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&mp_vd_lavc_vaapi_copy,
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#endif
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NULL
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};
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static struct vd_lavc_hwdec *find_hwcodec(enum hwdec_type api)
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{
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for (int n = 0; hwdec_list[n]; n++) {
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if (hwdec_list[n]->type == api)
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return (struct vd_lavc_hwdec *)hwdec_list[n];
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}
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return NULL;
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}
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static bool hwdec_codec_allowed(struct dec_video *vd, const char *codec)
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{
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bstr s = bstr0(vd->opts->hwdec_codecs);
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while (s.len) {
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bstr item;
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bstr_split_tok(s, ",", &item, &s);
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if (bstr_equals0(item, "all") || bstr_equals0(item, codec))
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return true;
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}
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return false;
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}
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static enum AVDiscard str2AVDiscard(struct dec_video *vd, char *str)
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{
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if (!str) return AVDISCARD_DEFAULT;
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if (strcasecmp(str, "none" ) == 0) return AVDISCARD_NONE;
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if (strcasecmp(str, "default") == 0) return AVDISCARD_DEFAULT;
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if (strcasecmp(str, "nonref" ) == 0) return AVDISCARD_NONREF;
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if (strcasecmp(str, "bidir" ) == 0) return AVDISCARD_BIDIR;
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if (strcasecmp(str, "nonkey" ) == 0) return AVDISCARD_NONKEY;
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if (strcasecmp(str, "all" ) == 0) return AVDISCARD_ALL;
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MP_ERR(vd, "Unknown discard value %s\n", str);
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return AVDISCARD_DEFAULT;
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}
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// Find the correct profile entry for the current codec and profile.
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// Assumes the table has higher profiles first (for each codec).
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const struct hwdec_profile_entry *hwdec_find_profile(
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struct lavc_ctx *ctx, const struct hwdec_profile_entry *table)
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{
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assert(AV_CODEC_ID_NONE == 0);
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struct lavc_param *lavc_param = &ctx->opts->lavc_param;
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enum AVCodecID codec = ctx->avctx->codec_id;
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int profile = ctx->avctx->profile;
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// Assume nobody cares about these aspects of the profile
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if (codec == AV_CODEC_ID_H264) {
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if (profile == FF_PROFILE_H264_CONSTRAINED_BASELINE)
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profile = FF_PROFILE_H264_MAIN;
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}
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for (int n = 0; table[n].av_codec; n++) {
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if (table[n].av_codec == codec) {
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if (table[n].ff_profile == FF_PROFILE_UNKNOWN ||
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profile == FF_PROFILE_UNKNOWN ||
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table[n].ff_profile == profile ||
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!lavc_param->check_hw_profile)
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return &table[n];
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}
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}
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return NULL;
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}
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// Check codec support, without checking the profile.
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bool hwdec_check_codec_support(const char *decoder,
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const struct hwdec_profile_entry *table)
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{
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enum AVCodecID codec = mp_codec_to_av_codec_id(decoder);
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for (int n = 0; table[n].av_codec; n++) {
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if (table[n].av_codec == codec)
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return true;
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}
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return false;
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}
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int hwdec_get_max_refs(struct lavc_ctx *ctx)
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{
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return ctx->avctx->codec_id == AV_CODEC_ID_H264 ? 16 : 2;
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}
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void hwdec_request_api(struct mp_hwdec_info *info, const char *api_name)
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{
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if (info && info->load_api)
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info->load_api(info, api_name);
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}
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static int hwdec_probe(struct vd_lavc_hwdec *hwdec, struct mp_hwdec_info *info,
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const char *decoder, const char **hw_decoder)
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{
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if (hwdec->codec_pairs) {
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for (int n = 0; hwdec->codec_pairs[n + 0]; n += 2) {
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const char *sw = hwdec->codec_pairs[n + 0];
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const char *hw = hwdec->codec_pairs[n + 1];
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if (decoder && strcmp(decoder, sw) == 0) {
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AVCodec *codec = avcodec_find_decoder_by_name(hw);
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*hw_decoder = hw;
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if (codec)
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goto found;
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}
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}
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return HWDEC_ERR_NO_CODEC;
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found: ;
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}
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int r = 0;
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if (hwdec->probe)
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r = hwdec->probe(hwdec, info, decoder);
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return r;
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}
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static bool probe_hwdec(struct dec_video *vd, bool autoprobe, enum hwdec_type api,
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const char *decoder, struct vd_lavc_hwdec **use_hwdec,
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const char **use_decoder)
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{
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struct vd_lavc_hwdec *hwdec = find_hwcodec(api);
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if (!hwdec) {
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MP_VERBOSE(vd, "Requested hardware decoder not "
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"compiled.\n");
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return false;
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}
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const char *hw_decoder = NULL;
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int r = hwdec_probe(hwdec, &vd->hwdec_info, decoder, &hw_decoder);
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if (r >= 0) {
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*use_hwdec = hwdec;
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*use_decoder = hw_decoder;
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return true;
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} else if (r == HWDEC_ERR_NO_CODEC) {
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MP_VERBOSE(vd, "Hardware decoder '%s' not found in "
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"libavcodec.\n", hw_decoder ? hw_decoder : decoder);
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} else if (r == HWDEC_ERR_NO_CTX && !autoprobe) {
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MP_WARN(vd, "VO does not support requested "
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"hardware decoder.\n");
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}
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return false;
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}
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static int init(struct dec_video *vd, const char *decoder)
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{
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vd_ffmpeg_ctx *ctx;
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ctx = vd->priv = talloc_zero(NULL, vd_ffmpeg_ctx);
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ctx->log = vd->log;
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ctx->opts = vd->opts;
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ctx->non_dr1_pool = talloc_steal(ctx, mp_image_pool_new(16));
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if (bstr_endswith0(bstr0(decoder), "_vdpau")) {
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MP_WARN(vd, "VDPAU decoder '%s' was requested. "
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"This way of enabling hardware\ndecoding is not supported "
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"anymore. Use --hwdec=vdpau instead.\nThe --hwdec-codec=... "
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"option can be used to restrict which codecs are\nenabled, "
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"otherwise all hardware decoding is tried for all codecs.\n",
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decoder);
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uninit(vd);
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return 0;
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}
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struct vd_lavc_hwdec *hwdec = NULL;
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const char *hw_decoder = NULL;
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if (hwdec_codec_allowed(vd, decoder)) {
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if (vd->opts->hwdec_api == HWDEC_AUTO) {
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for (int n = 0; hwdec_list[n]; n++) {
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if (probe_hwdec(vd, true, hwdec_list[n]->type, decoder,
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&hwdec, &hw_decoder))
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break;
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}
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} else if (vd->opts->hwdec_api != HWDEC_NONE) {
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probe_hwdec(vd, false, vd->opts->hwdec_api, decoder,
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&hwdec, &hw_decoder);
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}
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} else {
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MP_VERBOSE(vd, "Not trying to use hardware decoding: "
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"codec %s is blacklisted by user.\n", decoder);
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}
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if (hwdec) {
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ctx->software_fallback_decoder = talloc_strdup(ctx, decoder);
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if (hw_decoder)
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decoder = hw_decoder;
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MP_INFO(vd, "Trying to use hardware decoding.\n");
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} else if (vd->opts->hwdec_api != HWDEC_NONE) {
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MP_INFO(vd, "Using software decoding.\n");
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}
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init_avctx(vd, decoder, hwdec);
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if (!ctx->avctx) {
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if (ctx->software_fallback_decoder) {
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MP_ERR(vd, "Error initializing hardware decoding, "
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"falling back to software decoding.\n");
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decoder = ctx->software_fallback_decoder;
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ctx->software_fallback_decoder = NULL;
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init_avctx(vd, decoder, NULL);
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}
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if (!ctx->avctx) {
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uninit(vd);
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return 0;
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}
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}
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return 1;
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}
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static void set_from_bih(AVCodecContext *avctx, uint32_t format,
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MP_BITMAPINFOHEADER *bih)
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{
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switch (format) {
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case MP_FOURCC('S','V','Q','3'):
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case MP_FOURCC('A','V','R','n'):
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case MP_FOURCC('M','J','P','G'):
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/* AVRn stores huffman table in AVI header */
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/* Pegasus MJPEG stores it also in AVI header, but it uses the common
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* MJPG fourcc :( */
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av_opt_set_int(avctx, "extern_huff", 1, AV_OPT_SEARCH_CHILDREN);
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break;
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case MP_FOURCC('R','V','1','0'):
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case MP_FOURCC('R','V','1','3'):
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case MP_FOURCC('R','V','2','0'):
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case MP_FOURCC('R','V','3','0'):
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case MP_FOURCC('R','V','4','0'):
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if (bih->biSize < sizeof(*bih) + 8) {
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// only 1 packet per frame & sub_id from fourcc
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uint32_t extradata[2] = {
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0,
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format == MP_FOURCC('R','V','1','3') ? 0x10003001 : 0x10000000,
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};
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mp_lavc_set_extradata(avctx, &extradata, 8);
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}
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break;
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}
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if (bih->biSize > sizeof(*bih) && avctx->extradata_size == 0)
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mp_lavc_set_extradata(avctx, bih + 1, bih->biSize - sizeof(*bih));
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avctx->bits_per_coded_sample = bih->biBitCount;
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avctx->coded_width = bih->biWidth;
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avctx->coded_height = bih->biHeight;
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}
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static void init_avctx(struct dec_video *vd, const char *decoder,
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struct vd_lavc_hwdec *hwdec)
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{
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vd_ffmpeg_ctx *ctx = vd->priv;
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struct lavc_param *lavc_param = &vd->opts->lavc_param;
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bool mp_rawvideo = false;
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struct sh_stream *sh = vd->header;
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assert(!ctx->avctx);
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if (strcmp(decoder, "mp-rawvideo") == 0) {
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mp_rawvideo = true;
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decoder = "rawvideo";
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}
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AVCodec *lavc_codec = avcodec_find_decoder_by_name(decoder);
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if (!lavc_codec)
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return;
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ctx->hwdec_info = &vd->hwdec_info;
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ctx->do_dr1 = ctx->do_hw_dr1 = 0;
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ctx->pix_fmt = AV_PIX_FMT_NONE;
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ctx->hwdec = hwdec;
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ctx->avctx = avcodec_alloc_context3(lavc_codec);
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AVCodecContext *avctx = ctx->avctx;
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avctx->opaque = vd;
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avctx->codec_type = AVMEDIA_TYPE_VIDEO;
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avctx->codec_id = lavc_codec->id;
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#if HAVE_AVUTIL_REFCOUNTING
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avctx->refcounted_frames = 1;
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ctx->pic = av_frame_alloc();
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#else
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ctx->pic = avcodec_alloc_frame();
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#endif
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if (ctx->hwdec) {
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ctx->do_hw_dr1 = true;
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avctx->thread_count = 1;
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avctx->get_format = get_format_hwdec;
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setup_refcounting_hw(avctx);
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if (ctx->hwdec->init(ctx) < 0) {
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uninit_avctx(vd);
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return;
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}
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} else {
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#if !HAVE_AVUTIL_REFCOUNTING
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if (lavc_codec->capabilities & CODEC_CAP_DR1) {
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ctx->do_dr1 = true;
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avctx->get_buffer = mp_codec_get_buffer;
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avctx->release_buffer = mp_codec_release_buffer;
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}
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#endif
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mp_set_avcodec_threads(avctx, lavc_param->threads);
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}
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avctx->flags |= lavc_param->bitexact;
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avctx->flags2 |= lavc_param->fast;
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if (lavc_param->show_all) {
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#ifdef CODEC_FLAG2_SHOW_ALL
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avctx->flags2 |= CODEC_FLAG2_SHOW_ALL; // ffmpeg only?
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#endif
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#ifdef CODEC_FLAG_OUTPUT_CORRUPT
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avctx->flags |= CODEC_FLAG_OUTPUT_CORRUPT; // added with Libav 10
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#endif
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}
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avctx->skip_loop_filter = str2AVDiscard(vd, lavc_param->skip_loop_filter_str);
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avctx->skip_idct = str2AVDiscard(vd, lavc_param->skip_idct_str);
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avctx->skip_frame = str2AVDiscard(vd, lavc_param->skip_frame_str);
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if (lavc_param->avopt) {
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if (parse_avopts(avctx, lavc_param->avopt) < 0) {
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MP_ERR(vd, "Your options /%s/ look like gibberish to me pal\n",
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lavc_param->avopt);
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uninit_avctx(vd);
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return;
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}
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}
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// Do this after the above avopt handling in case it changes values
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ctx->skip_frame = avctx->skip_frame;
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avctx->codec_tag = sh->format;
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avctx->coded_width = sh->video->disp_w;
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avctx->coded_height = sh->video->disp_h;
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// demux_mkv
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if (sh->video->bih)
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set_from_bih(avctx, sh->format, sh->video->bih);
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if (mp_rawvideo) {
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avctx->pix_fmt = imgfmt2pixfmt(sh->format);
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avctx->codec_tag = 0;
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if (avctx->pix_fmt == AV_PIX_FMT_NONE && sh->format)
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MP_ERR(vd, "Image format %s not supported by lavc.\n",
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mp_imgfmt_to_name(sh->format));
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}
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if (sh->lav_headers)
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mp_copy_lav_codec_headers(avctx, sh->lav_headers);
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/* open it */
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if (avcodec_open2(avctx, lavc_codec, NULL) < 0) {
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MP_ERR(vd, "Could not open codec.\n");
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uninit_avctx(vd);
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return;
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}
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}
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static void uninit_avctx(struct dec_video *vd)
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{
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vd_ffmpeg_ctx *ctx = vd->priv;
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AVCodecContext *avctx = ctx->avctx;
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if (avctx) {
|
|
if (avctx->codec && avcodec_close(avctx) < 0)
|
|
MP_ERR(vd, "Could not close codec.\n");
|
|
|
|
av_freep(&avctx->extradata);
|
|
av_freep(&avctx->slice_offset);
|
|
}
|
|
|
|
av_freep(&ctx->avctx);
|
|
|
|
if (ctx->hwdec && ctx->hwdec->uninit)
|
|
ctx->hwdec->uninit(ctx);
|
|
|
|
#if HAVE_AVUTIL_REFCOUNTING
|
|
av_frame_free(&ctx->pic);
|
|
#else
|
|
avcodec_free_frame(&ctx->pic);
|
|
mp_buffer_pool_free(&ctx->dr1_buffer_pool);
|
|
#endif
|
|
}
|
|
|
|
static void uninit(struct dec_video *vd)
|
|
{
|
|
uninit_avctx(vd);
|
|
}
|
|
|
|
static void update_image_params(struct dec_video *vd, AVFrame *frame,
|
|
struct mp_image_params *out_params)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
int width = frame->width;
|
|
int height = frame->height;
|
|
float aspect = av_q2d(frame->sample_aspect_ratio) * width / height;
|
|
int pix_fmt = frame->format;
|
|
|
|
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(54, 40, 0)
|
|
pix_fmt = ctx->avctx->pix_fmt;
|
|
#endif
|
|
|
|
if (pix_fmt != ctx->pix_fmt) {
|
|
ctx->pix_fmt = pix_fmt;
|
|
ctx->best_csp = pixfmt2imgfmt(pix_fmt);
|
|
if (!ctx->best_csp)
|
|
MP_ERR(vd, "lavc pixel format %s not supported.\n",
|
|
av_get_pix_fmt_name(pix_fmt));
|
|
}
|
|
|
|
int d_w, d_h;
|
|
vf_set_dar(&d_w, &d_h, width, height, aspect);
|
|
|
|
*out_params = (struct mp_image_params) {
|
|
.imgfmt = ctx->best_csp,
|
|
.w = width,
|
|
.h = height,
|
|
.d_w = d_w,
|
|
.d_h = d_h,
|
|
.colorspace = avcol_spc_to_mp_csp(ctx->avctx->colorspace),
|
|
.colorlevels = avcol_range_to_mp_csp_levels(ctx->avctx->color_range),
|
|
.chroma_location =
|
|
avchroma_location_to_mp(ctx->avctx->chroma_sample_location),
|
|
};
|
|
}
|
|
|
|
static enum AVPixelFormat get_format_hwdec(struct AVCodecContext *avctx,
|
|
const enum AVPixelFormat *fmt)
|
|
{
|
|
struct dec_video *vd = avctx->opaque;
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
|
|
MP_VERBOSE(vd, "Pixel formats supported by decoder:");
|
|
for (int i = 0; fmt[i] != AV_PIX_FMT_NONE; i++)
|
|
MP_VERBOSE(vd, " %s", av_get_pix_fmt_name(fmt[i]));
|
|
MP_VERBOSE(vd, "\n");
|
|
|
|
assert(ctx->hwdec);
|
|
|
|
for (int i = 0; fmt[i] != AV_PIX_FMT_NONE; i++) {
|
|
const int *okfmt = ctx->hwdec->image_formats;
|
|
for (int n = 0; okfmt && okfmt[n]; n++) {
|
|
if (imgfmt2pixfmt(okfmt[n]) == fmt[i])
|
|
return fmt[i];
|
|
}
|
|
}
|
|
|
|
return AV_PIX_FMT_NONE;
|
|
}
|
|
|
|
static struct mp_image *get_surface_hwdec(struct dec_video *vd, AVFrame *pic)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
|
|
/* Decoders using ffmpeg's hwaccel architecture (everything except vdpau)
|
|
* can fall back to software decoding automatically. However, we don't
|
|
* want that: multithreading was already disabled. ffmpeg's fallback
|
|
* isn't really useful, and causes more trouble than it helps.
|
|
*
|
|
* Instead of trying to "adjust" the thread_count fields in avctx, let
|
|
* decoding fail hard. Then decode_with_fallback() will do our own software
|
|
* fallback. Fully reinitializing the decoder is saner, and will probably
|
|
* save us from other weird corner cases, like having to "reroute" the
|
|
* get_buffer callback.
|
|
*/
|
|
int imgfmt = pixfmt2imgfmt(pic->format);
|
|
if (!IMGFMT_IS_HWACCEL(imgfmt))
|
|
return NULL;
|
|
|
|
// Using frame->width/height is bad. For non-mod 16 video (which would
|
|
// require alignment of frame sizes) we want the decoded size, not the
|
|
// aligned size. At least vdpau needs this: the video mixer is created
|
|
// with decoded size, and the video surfaces must have matching size.
|
|
int w = ctx->avctx->width;
|
|
int h = ctx->avctx->height;
|
|
|
|
struct mp_image *mpi = ctx->hwdec->allocate_image(ctx, imgfmt, w, h);
|
|
|
|
if (mpi) {
|
|
for (int i = 0; i < 4; i++)
|
|
pic->data[i] = mpi->planes[i];
|
|
}
|
|
|
|
return mpi;
|
|
}
|
|
|
|
#if HAVE_AVUTIL_REFCOUNTING
|
|
|
|
static void free_mpi(void *opaque, uint8_t *data)
|
|
{
|
|
struct mp_image *mpi = opaque;
|
|
talloc_free(mpi);
|
|
}
|
|
|
|
static int get_buffer2_hwdec(AVCodecContext *avctx, AVFrame *pic, int flags)
|
|
{
|
|
struct dec_video *vd = avctx->opaque;
|
|
|
|
struct mp_image *mpi = get_surface_hwdec(vd, pic);
|
|
if (!mpi)
|
|
return -1;
|
|
|
|
pic->buf[0] = av_buffer_create(NULL, 0, free_mpi, mpi, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void setup_refcounting_hw(AVCodecContext *avctx)
|
|
{
|
|
avctx->get_buffer2 = get_buffer2_hwdec;
|
|
}
|
|
|
|
#else /* HAVE_AVUTIL_REFCOUNTING */
|
|
|
|
static int get_buffer_hwdec(AVCodecContext *avctx, AVFrame *pic)
|
|
{
|
|
struct dec_video *vd = avctx->opaque;
|
|
|
|
struct mp_image *mpi = get_surface_hwdec(vd, pic);
|
|
if (!mpi)
|
|
return -1;
|
|
|
|
pic->opaque = mpi;
|
|
pic->type = FF_BUFFER_TYPE_USER;
|
|
|
|
/* The libavcodec reordered_opaque functionality is implemented by
|
|
* a similar copy in avcodec_default_get_buffer() and without a
|
|
* workaround like this it'd stop working when a custom buffer
|
|
* callback is used.
|
|
*/
|
|
pic->reordered_opaque = avctx->reordered_opaque;
|
|
return 0;
|
|
}
|
|
|
|
static void release_buffer_hwdec(AVCodecContext *avctx, AVFrame *pic)
|
|
{
|
|
mp_image_t *mpi = pic->opaque;
|
|
|
|
assert(pic->type == FF_BUFFER_TYPE_USER);
|
|
assert(mpi);
|
|
|
|
talloc_free(mpi);
|
|
|
|
for (int i = 0; i < 4; i++)
|
|
pic->data[i] = NULL;
|
|
}
|
|
|
|
static void setup_refcounting_hw(AVCodecContext *avctx)
|
|
{
|
|
avctx->get_buffer = get_buffer_hwdec;
|
|
avctx->release_buffer = release_buffer_hwdec;
|
|
}
|
|
|
|
#endif /* HAVE_AVUTIL_REFCOUNTING */
|
|
|
|
#if HAVE_AVUTIL_REFCOUNTING
|
|
|
|
static struct mp_image *image_from_decoder(struct dec_video *vd)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
AVFrame *pic = ctx->pic;
|
|
|
|
struct mp_image *img = mp_image_from_av_frame(pic);
|
|
av_frame_unref(pic);
|
|
|
|
return img;
|
|
}
|
|
|
|
#else /* HAVE_AVUTIL_REFCOUNTING */
|
|
|
|
static void fb_ref(void *b)
|
|
{
|
|
mp_buffer_ref(b);
|
|
}
|
|
|
|
static void fb_unref(void *b)
|
|
{
|
|
mp_buffer_unref(b);
|
|
}
|
|
|
|
static bool fb_is_unique(void *b)
|
|
{
|
|
return mp_buffer_is_unique(b);
|
|
}
|
|
|
|
static struct mp_image *image_from_decoder(struct dec_video *vd)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
AVFrame *pic = ctx->pic;
|
|
|
|
struct mp_image new = {0};
|
|
mp_image_copy_fields_from_av_frame(&new, pic);
|
|
|
|
struct mp_image *mpi;
|
|
if (ctx->do_hw_dr1 && pic->opaque) {
|
|
mpi = pic->opaque; // reordered frame
|
|
assert(mpi);
|
|
mpi = mp_image_new_ref(mpi);
|
|
mp_image_copy_attributes(mpi, &new);
|
|
} else if (ctx->do_dr1 && pic->opaque) {
|
|
struct FrameBuffer *fb = pic->opaque;
|
|
mp_buffer_ref(fb); // initial reference for mpi
|
|
mpi = mp_image_new_external_ref(&new, fb, fb_ref, fb_unref,
|
|
fb_is_unique, NULL);
|
|
} else {
|
|
mpi = mp_image_pool_new_copy(ctx->non_dr1_pool, &new);
|
|
}
|
|
return mpi;
|
|
}
|
|
|
|
#endif /* HAVE_AVUTIL_REFCOUNTING */
|
|
|
|
static int decode(struct dec_video *vd, struct demux_packet *packet,
|
|
int flags, struct mp_image **out_image)
|
|
{
|
|
int got_picture = 0;
|
|
int ret;
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
AVCodecContext *avctx = ctx->avctx;
|
|
AVPacket pkt;
|
|
|
|
if (flags & 2)
|
|
avctx->skip_frame = AVDISCARD_ALL;
|
|
else if (flags & 1)
|
|
avctx->skip_frame = AVDISCARD_NONREF;
|
|
else
|
|
avctx->skip_frame = ctx->skip_frame;
|
|
|
|
mp_set_av_packet(&pkt, packet, NULL);
|
|
|
|
ret = avcodec_decode_video2(avctx, ctx->pic, &got_picture, &pkt);
|
|
if (ret < 0) {
|
|
MP_WARN(vd, "Error while decoding frame!\n");
|
|
return -1;
|
|
}
|
|
|
|
// Skipped frame, or delayed output due to multithreaded decoding.
|
|
if (!got_picture)
|
|
return 0;
|
|
|
|
struct mp_image_params params;
|
|
update_image_params(vd, ctx->pic, ¶ms);
|
|
vd->codec_pts = mp_pts_from_av(ctx->pic->pkt_pts, NULL);
|
|
vd->codec_dts = mp_pts_from_av(ctx->pic->pkt_dts, NULL);
|
|
|
|
// Note: potentially resets ctx->pic as it is transferred to mpi
|
|
struct mp_image *mpi = image_from_decoder(vd);
|
|
assert(mpi->planes[0]);
|
|
mp_image_set_params(mpi, ¶ms);
|
|
|
|
if (ctx->hwdec && ctx->hwdec->process_image)
|
|
mpi = ctx->hwdec->process_image(ctx, mpi);
|
|
|
|
*out_image = mpi;
|
|
return 1;
|
|
}
|
|
|
|
static int force_fallback(struct dec_video *vd)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
if (ctx->software_fallback_decoder) {
|
|
uninit_avctx(vd);
|
|
MP_ERR(vd, "Error using hardware "
|
|
"decoding, falling back to software decoding.\n");
|
|
const char *decoder = ctx->software_fallback_decoder;
|
|
ctx->software_fallback_decoder = NULL;
|
|
init_avctx(vd, decoder, NULL);
|
|
return ctx->avctx ? CONTROL_OK : CONTROL_ERROR;
|
|
}
|
|
return CONTROL_FALSE;
|
|
}
|
|
|
|
static struct mp_image *decode_with_fallback(struct dec_video *vd,
|
|
struct demux_packet *packet, int flags)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
if (!ctx->avctx)
|
|
return NULL;
|
|
|
|
struct mp_image *mpi = NULL;
|
|
int res = decode(vd, packet, flags, &mpi);
|
|
if (res < 0) {
|
|
// Failed hardware decoding? Try again in software.
|
|
if (force_fallback(vd) == CONTROL_OK)
|
|
decode(vd, packet, flags, &mpi);
|
|
}
|
|
|
|
return mpi;
|
|
}
|
|
|
|
static int control(struct dec_video *vd, int cmd, void *arg)
|
|
{
|
|
vd_ffmpeg_ctx *ctx = vd->priv;
|
|
AVCodecContext *avctx = ctx->avctx;
|
|
switch (cmd) {
|
|
case VDCTRL_RESET:
|
|
avcodec_flush_buffers(avctx);
|
|
return CONTROL_TRUE;
|
|
case VDCTRL_QUERY_UNSEEN_FRAMES:;
|
|
int delay = avctx->has_b_frames;
|
|
assert(delay >= 0);
|
|
if (avctx->active_thread_type & FF_THREAD_FRAME)
|
|
delay += avctx->thread_count - 1;
|
|
*(int *)arg = delay;
|
|
return CONTROL_TRUE;
|
|
case VDCTRL_FORCE_HWDEC_FALLBACK:
|
|
return force_fallback(vd);
|
|
}
|
|
return CONTROL_UNKNOWN;
|
|
}
|
|
|
|
static void add_decoders(struct mp_decoder_list *list)
|
|
{
|
|
mp_add_lavc_decoders(list, AVMEDIA_TYPE_VIDEO);
|
|
mp_add_decoder(list, "lavc", "mp-rawvideo", "mp-rawvideo",
|
|
"raw video");
|
|
}
|
|
|
|
const struct vd_functions mpcodecs_vd_ffmpeg = {
|
|
.name = "lavc",
|
|
.add_decoders = add_decoders,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.control = control,
|
|
.decode = decode_with_fallback,
|
|
};
|