/***************************************************************************** * video.c: video decoder using the libavcodec library ***************************************************************************** * Copyright (C) 1999-2001 VLC authors and VideoLAN * $Id$ * * Authors: Laurent Aimar * Gildas Bazin * * This program 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. * * This program 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 this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include #include #include #include #include #include #include #include "avcommon_compat.h" #if LIBAVUTIL_VERSION_CHECK( 55, 16, 101 ) #include #endif #include "avcodec.h" #include "va.h" #include "../../packetizer/av1_obu.h" #include "../../packetizer/av1.h" #include "../codec/cc.h" /***************************************************************************** * decoder_sys_t : decoder descriptor *****************************************************************************/ struct decoder_sys_t { AVCodecContext *p_context; const AVCodec *p_codec; /* Video decoder specific part */ date_t pts; /* Closed captions for decoders */ cc_data_t cc; /* for frame skipping algo */ bool b_hurry_up; bool b_show_corrupted; bool b_from_preroll; bool b_hardware_only; enum AVDiscard i_skip_frame; /* how many decoded frames are late */ int i_late_frames; vlc_tick_t i_late_frames_start; vlc_tick_t i_last_late_delay; /* for direct rendering */ bool b_direct_rendering; atomic_bool b_dr_failure; /* Hack to force display of still pictures */ bool b_first_frame; bool b_draining; /* */ bool palette_sent; /* VA API */ vlc_va_t *p_va; enum PixelFormat pix_fmt; int profile; int level; vlc_sem_t sem_mt; }; static inline void wait_mt(decoder_sys_t *sys) { vlc_sem_wait(&sys->sem_mt); } static inline void post_mt(decoder_sys_t *sys) { vlc_sem_post(&sys->sem_mt); } /***************************************************************************** * Local prototypes *****************************************************************************/ static void ffmpeg_InitCodec ( decoder_t * ); static int lavc_GetFrame(struct AVCodecContext *, AVFrame *, int); static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *, const enum PixelFormat * ); static int DecodeVideo( decoder_t *, block_t * ); static void Flush( decoder_t * ); static uint32_t ffmpeg_CodecTag( vlc_fourcc_t fcc ) { uint8_t *p = (uint8_t*)&fcc; return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); } /***************************************************************************** * Local Functions *****************************************************************************/ /** * Sets the decoder output format. */ static int lavc_GetVideoFormat(decoder_t *dec, video_format_t *restrict fmt, AVCodecContext *ctx, enum AVPixelFormat pix_fmt, enum AVPixelFormat sw_pix_fmt) { int width = ctx->coded_width; int height = ctx->coded_height; video_format_Init(fmt, 0); if (pix_fmt == sw_pix_fmt) { /* software decoding */ int aligns[AV_NUM_DATA_POINTERS]; if (GetVlcChroma(fmt, pix_fmt)) return -1; /* The libavcodec palette can only be fetched when the first output * frame is decoded. Assume that the current chroma is RGB32 while we * are waiting for a valid palette. Indeed, fmt_out.video.p_palette * doesn't trigger a new vout request, but a new chroma yes. */ if (pix_fmt == AV_PIX_FMT_PAL8 && !dec->fmt_out.video.p_palette) fmt->i_chroma = VLC_CODEC_RGB32; avcodec_align_dimensions2(ctx, &width, &height, aligns); } else /* hardware decoding */ fmt->i_chroma = vlc_va_GetChroma(pix_fmt, sw_pix_fmt); if( width == 0 || height == 0 || width > 8192 || height > 8192 || width < ctx->width || height < ctx->height ) { msg_Err(dec, "Invalid frame size %dx%d vsz %dx%d", width, height, ctx->width, ctx->height ); return -1; /* invalid display size */ } fmt->i_width = width; fmt->i_height = height; fmt->i_visible_width = ctx->width; fmt->i_visible_height = ctx->height; /* If an aspect-ratio was specified in the input format then force it */ if (dec->fmt_in.video.i_sar_num > 0 && dec->fmt_in.video.i_sar_den > 0) { fmt->i_sar_num = dec->fmt_in.video.i_sar_num; fmt->i_sar_den = dec->fmt_in.video.i_sar_den; } else { fmt->i_sar_num = ctx->sample_aspect_ratio.num; fmt->i_sar_den = ctx->sample_aspect_ratio.den; if (fmt->i_sar_num == 0 || fmt->i_sar_den == 0) fmt->i_sar_num = fmt->i_sar_den = 1; } if (dec->fmt_in.video.i_frame_rate > 0 && dec->fmt_in.video.i_frame_rate_base > 0) { fmt->i_frame_rate = dec->fmt_in.video.i_frame_rate; fmt->i_frame_rate_base = dec->fmt_in.video.i_frame_rate_base; } else if (ctx->framerate.num > 0 && ctx->framerate.den > 0) { fmt->i_frame_rate = ctx->framerate.num; fmt->i_frame_rate_base = ctx->framerate.den; # if LIBAVCODEC_VERSION_MICRO < 100 // for some reason libav don't thinkg framerate presents actually same thing as in ffmpeg fmt->i_frame_rate_base *= __MAX(ctx->ticks_per_frame, 1); # endif } else if (ctx->time_base.num > 0 && ctx->time_base.den > 0) { fmt->i_frame_rate = ctx->time_base.den; fmt->i_frame_rate_base = ctx->time_base.num; } /* FIXME we should only set the known values and let the core decide * later of fallbacks, but we can't do that with a boolean */ switch ( ctx->color_range ) { case AVCOL_RANGE_JPEG: fmt->b_color_range_full = true; break; case AVCOL_RANGE_UNSPECIFIED: fmt->b_color_range_full = !vlc_fourcc_IsYUV( fmt->i_chroma ); break; case AVCOL_RANGE_MPEG: default: fmt->b_color_range_full = false; break; } switch( ctx->colorspace ) { case AVCOL_SPC_BT709: fmt->space = COLOR_SPACE_BT709; break; case AVCOL_SPC_SMPTE170M: case AVCOL_SPC_BT470BG: fmt->space = COLOR_SPACE_BT601; break; case AVCOL_SPC_BT2020_NCL: case AVCOL_SPC_BT2020_CL: fmt->space = COLOR_SPACE_BT2020; break; default: break; } switch( ctx->color_trc ) { case AVCOL_TRC_LINEAR: fmt->transfer = TRANSFER_FUNC_LINEAR; break; case AVCOL_TRC_GAMMA22: fmt->transfer = TRANSFER_FUNC_SRGB; break; case AVCOL_TRC_BT709: fmt->transfer = TRANSFER_FUNC_BT709; break; case AVCOL_TRC_SMPTE170M: case AVCOL_TRC_BT2020_10: case AVCOL_TRC_BT2020_12: fmt->transfer = TRANSFER_FUNC_BT2020; break; #if LIBAV_UTIL_VERSION_CHECK( 55, 14, 0, 31, 100) case AVCOL_TRC_ARIB_STD_B67: fmt->transfer = TRANSFER_FUNC_ARIB_B67; break; #endif #if LIBAV_UTIL_VERSION_CHECK( 55, 17, 0, 37, 100) case AVCOL_TRC_SMPTE2084: fmt->transfer = TRANSFER_FUNC_SMPTE_ST2084; break; case AVCOL_TRC_SMPTE240M: fmt->transfer = TRANSFER_FUNC_SMPTE_240; break; case AVCOL_TRC_GAMMA28: fmt->transfer = TRANSFER_FUNC_BT470_BG; break; #endif default: break; } switch( ctx->color_primaries ) { case AVCOL_PRI_BT709: fmt->primaries = COLOR_PRIMARIES_BT709; break; case AVCOL_PRI_BT470BG: fmt->primaries = COLOR_PRIMARIES_BT601_625; break; case AVCOL_PRI_SMPTE170M: case AVCOL_PRI_SMPTE240M: fmt->primaries = COLOR_PRIMARIES_BT601_525; break; case AVCOL_PRI_BT2020: fmt->primaries = COLOR_PRIMARIES_BT2020; break; default: break; } switch( ctx->chroma_sample_location ) { case AVCHROMA_LOC_LEFT: fmt->chroma_location = CHROMA_LOCATION_LEFT; break; case AVCHROMA_LOC_CENTER: fmt->chroma_location = CHROMA_LOCATION_CENTER; break; case AVCHROMA_LOC_TOPLEFT: fmt->chroma_location = CHROMA_LOCATION_TOP_LEFT; break; default: break; } return 0; } static int lavc_UpdateVideoFormat(decoder_t *dec, AVCodecContext *ctx, enum AVPixelFormat fmt, enum AVPixelFormat swfmt) { video_format_t fmt_out; int val; val = lavc_GetVideoFormat(dec, &fmt_out, ctx, fmt, swfmt); if (val) return val; /* always have date in fields/ticks units */ if(dec->p_sys->pts.i_divider_num) date_Change(&dec->p_sys->pts, fmt_out.i_frame_rate, fmt_out.i_frame_rate_base); else date_Init(&dec->p_sys->pts, fmt_out.i_frame_rate, fmt_out.i_frame_rate_base); fmt_out.p_palette = dec->fmt_out.video.p_palette; dec->fmt_out.video.p_palette = NULL; es_format_Change(&dec->fmt_out, VIDEO_ES, fmt_out.i_chroma); dec->fmt_out.video = fmt_out; dec->fmt_out.video.orientation = dec->fmt_in.video.orientation; dec->fmt_out.video.projection_mode = dec->fmt_in.video.projection_mode; dec->fmt_out.video.multiview_mode = dec->fmt_in.video.multiview_mode; dec->fmt_out.video.pose = dec->fmt_in.video.pose; if ( dec->fmt_in.video.mastering.max_luminance ) dec->fmt_out.video.mastering = dec->fmt_in.video.mastering; dec->fmt_out.video.lighting = dec->fmt_in.video.lighting; return decoder_UpdateVideoFormat(dec); } /** * Copies a picture from the libavcodec-allocate buffer to a picture_t. * This is used when not in direct rendering mode. */ static int lavc_CopyPicture(decoder_t *dec, picture_t *pic, AVFrame *frame) { decoder_sys_t *sys = dec->p_sys; vlc_fourcc_t fourcc = FindVlcChroma(frame->format); if (!fourcc) { const char *name = av_get_pix_fmt_name(frame->format); msg_Err(dec, "Unsupported decoded output format %d (%s)", sys->p_context->pix_fmt, (name != NULL) ? name : "unknown"); return VLC_EGENERIC; } else if (fourcc != pic->format.i_chroma /* ensure we never read more than dst lines/pixels from src */ || frame->width != (int) pic->format.i_visible_width || frame->height < (int) pic->format.i_visible_height) { msg_Warn(dec, "dropping frame because the vout changed"); return VLC_EGENERIC; } for (int plane = 0; plane < pic->i_planes; plane++) { const uint8_t *src = frame->data[plane]; uint8_t *dst = pic->p[plane].p_pixels; size_t src_stride = frame->linesize[plane]; size_t dst_stride = pic->p[plane].i_pitch; size_t size = __MIN(src_stride, dst_stride); for (int line = 0; line < pic->p[plane].i_visible_lines; line++) { memcpy(dst, src, size); src += src_stride; dst += dst_stride; } } return VLC_SUCCESS; } static int OpenVideoCodec( decoder_t *p_dec ) { decoder_sys_t *p_sys = p_dec->p_sys; AVCodecContext *ctx = p_sys->p_context; const AVCodec *codec = p_sys->p_codec; int ret; if( ctx->extradata_size <= 0 ) { if( codec->id == AV_CODEC_ID_VC1 || codec->id == AV_CODEC_ID_THEORA ) { msg_Warn( p_dec, "waiting for extra data for codec %s", codec->name ); return 1; } } ctx->width = p_dec->fmt_in.video.i_visible_width; ctx->height = p_dec->fmt_in.video.i_visible_height; if (!ctx->coded_width || !ctx->coded_height) { ctx->coded_width = p_dec->fmt_in.video.i_width; ctx->coded_height = p_dec->fmt_in.video.i_height; } ctx->bits_per_coded_sample = p_dec->fmt_in.video.i_bits_per_pixel; p_sys->pix_fmt = AV_PIX_FMT_NONE; cc_Init( &p_sys->cc ); set_video_color_settings( &p_dec->fmt_in.video, ctx ); if( p_dec->fmt_in.video.i_frame_rate_base && p_dec->fmt_in.video.i_frame_rate && (double) p_dec->fmt_in.video.i_frame_rate / p_dec->fmt_in.video.i_frame_rate_base < 6 ) { ctx->flags |= AV_CODEC_FLAG_LOW_DELAY; } post_mt( p_sys ); ret = ffmpeg_OpenCodec( p_dec, ctx, codec ); wait_mt( p_sys ); if( ret < 0 ) return ret; switch( ctx->active_thread_type ) { case FF_THREAD_FRAME: msg_Dbg( p_dec, "using frame thread mode with %d threads", ctx->thread_count ); break; case FF_THREAD_SLICE: msg_Dbg( p_dec, "using slice thread mode with %d threads", ctx->thread_count ); break; case 0: if( ctx->thread_count > 1 ) msg_Warn( p_dec, "failed to enable threaded decoding" ); break; default: msg_Warn( p_dec, "using unknown thread mode with %d threads", ctx->thread_count ); break; } return 0; } static int InitVideoDecCommon( decoder_t *p_dec ) { decoder_sys_t *p_sys = p_dec->p_sys; AVCodecContext *p_context = p_sys->p_context; const AVCodec *p_codec = p_sys->p_codec; int i_val; p_sys->p_va = NULL; vlc_sem_init( &p_sys->sem_mt, 0 ); /* ***** Fill p_context with init values ***** */ p_context->codec_tag = ffmpeg_CodecTag( p_dec->fmt_in.i_original_fourcc ? p_dec->fmt_in.i_original_fourcc : p_dec->fmt_in.i_codec ); /* ***** Get configuration of ffmpeg plugin ***** */ p_context->workaround_bugs = var_InheritInteger( p_dec, "avcodec-workaround-bugs" ); p_context->err_recognition = var_InheritInteger( p_dec, "avcodec-error-resilience" ); if( var_CreateGetBool( p_dec, "grayscale" ) ) p_context->flags |= AV_CODEC_FLAG_GRAY; /* ***** Output always the frames ***** */ p_context->flags |= AV_CODEC_FLAG_OUTPUT_CORRUPT; i_val = var_CreateGetInteger( p_dec, "avcodec-skiploopfilter" ); if( i_val >= 4 ) p_context->skip_loop_filter = AVDISCARD_ALL; else if( i_val == 3 ) p_context->skip_loop_filter = AVDISCARD_NONKEY; else if( i_val == 2 ) p_context->skip_loop_filter = AVDISCARD_BIDIR; else if( i_val == 1 ) p_context->skip_loop_filter = AVDISCARD_NONREF; else p_context->skip_loop_filter = AVDISCARD_DEFAULT; if( var_CreateGetBool( p_dec, "avcodec-fast" ) ) p_context->flags2 |= AV_CODEC_FLAG2_FAST; /* ***** libavcodec frame skipping ***** */ p_sys->b_hurry_up = var_CreateGetBool( p_dec, "avcodec-hurry-up" ); p_sys->b_show_corrupted = var_CreateGetBool( p_dec, "avcodec-corrupted" ); i_val = var_CreateGetInteger( p_dec, "avcodec-skip-frame" ); if( i_val >= 4 ) p_sys->i_skip_frame = AVDISCARD_ALL; else if( i_val == 3 ) p_sys->i_skip_frame = AVDISCARD_NONKEY; else if( i_val == 2 ) p_sys->i_skip_frame = AVDISCARD_BIDIR; else if( i_val == 1 ) p_sys->i_skip_frame = AVDISCARD_NONREF; else if( i_val == -1 ) p_sys->i_skip_frame = AVDISCARD_NONE; else p_sys->i_skip_frame = AVDISCARD_DEFAULT; p_context->skip_frame = p_sys->i_skip_frame; i_val = var_CreateGetInteger( p_dec, "avcodec-skip-idct" ); if( i_val >= 4 ) p_context->skip_idct = AVDISCARD_ALL; else if( i_val == 3 ) p_context->skip_idct = AVDISCARD_NONKEY; else if( i_val == 2 ) p_context->skip_idct = AVDISCARD_BIDIR; else if( i_val == 1 ) p_context->skip_idct = AVDISCARD_NONREF; else if( i_val == -1 ) p_context->skip_idct = AVDISCARD_NONE; else p_context->skip_idct = AVDISCARD_DEFAULT; /* ***** libavcodec direct rendering ***** */ p_sys->b_direct_rendering = false; atomic_init(&p_sys->b_dr_failure, false); if( var_CreateGetBool( p_dec, "avcodec-dr" ) && (p_codec->capabilities & AV_CODEC_CAP_DR1) && /* No idea why ... but this fixes flickering on some TSCC streams */ p_sys->p_codec->id != AV_CODEC_ID_TSCC && p_sys->p_codec->id != AV_CODEC_ID_CSCD && p_sys->p_codec->id != AV_CODEC_ID_CINEPAK ) { /* Some codecs set pix_fmt only after the 1st frame has been decoded, * so we need to do another check in ffmpeg_GetFrameBuf() */ p_sys->b_direct_rendering = true; } p_context->get_format = ffmpeg_GetFormat; /* Always use our get_buffer wrapper so we can calculate the * PTS correctly */ p_context->get_buffer2 = lavc_GetFrame; p_context->opaque = p_dec; int i_thread_count = p_sys->b_hardware_only ? 1 : var_InheritInteger( p_dec, "avcodec-threads" ); if( i_thread_count <= 0 ) { i_thread_count = vlc_GetCPUCount(); if( i_thread_count > 1 ) i_thread_count++; //FIXME: take in count the decoding time #if VLC_WINSTORE_APP i_thread_count = __MIN( i_thread_count, 6 ); #else i_thread_count = __MIN( i_thread_count, p_codec->id == AV_CODEC_ID_HEVC ? 10 : 6 ); #endif } i_thread_count = __MIN( i_thread_count, p_codec->id == AV_CODEC_ID_HEVC ? 32 : 16 ); msg_Dbg( p_dec, "allowing %d thread(s) for decoding", i_thread_count ); p_context->thread_count = i_thread_count; #if LIBAVCODEC_VERSION_MAJOR < 60 p_context->thread_safe_callbacks = true; #endif switch( p_codec->id ) { case AV_CODEC_ID_MPEG4: case AV_CODEC_ID_H263: p_context->thread_type = 0; break; case AV_CODEC_ID_MPEG1VIDEO: case AV_CODEC_ID_MPEG2VIDEO: p_context->thread_type &= ~FF_THREAD_SLICE; /* fall through */ # if (LIBAVCODEC_VERSION_INT < AV_VERSION_INT(55, 1, 0)) case AV_CODEC_ID_H264: case AV_CODEC_ID_VC1: case AV_CODEC_ID_WMV3: p_context->thread_type &= ~FF_THREAD_FRAME; # endif default: break; } if( p_context->thread_type & FF_THREAD_FRAME ) p_dec->i_extra_picture_buffers = 2 * p_context->thread_count; /* ***** misc init ***** */ date_Init(&p_sys->pts, 1, 30001); date_Set(&p_sys->pts, VLC_TICK_INVALID); p_sys->b_first_frame = true; p_sys->i_late_frames = 0; p_sys->b_from_preroll = false; p_sys->b_draining = false; /* Set output properties */ if( GetVlcChroma( &p_dec->fmt_out.video, p_context->pix_fmt ) != VLC_SUCCESS ) { /* we are doomed. but not really, because most codecs set their pix_fmt later on */ p_dec->fmt_out.i_codec = VLC_CODEC_I420; } p_dec->fmt_out.i_codec = p_dec->fmt_out.video.i_chroma; p_dec->fmt_out.video.orientation = p_dec->fmt_in.video.orientation; if( p_dec->fmt_in.video.p_palette ) { p_sys->palette_sent = false; p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) ); if( p_dec->fmt_out.video.p_palette ) *p_dec->fmt_out.video.p_palette = *p_dec->fmt_in.video.p_palette; } else p_sys->palette_sent = true; /* ***** init this codec with special data ***** */ ffmpeg_InitCodec( p_dec ); /* ***** Open the codec ***** */ if( OpenVideoCodec( p_dec ) < 0 ) { vlc_sem_destroy( &p_sys->sem_mt ); free( p_sys ); avcodec_free_context( &p_context ); return VLC_EGENERIC; } p_dec->pf_decode = DecodeVideo; p_dec->pf_flush = Flush; /* XXX: Writing input format makes little sense. */ if( p_context->profile != AVPROFILE(UNKNOWN) ) p_dec->fmt_in.i_profile = p_context->profile; if( p_context->level != AVLEVEL(UNKNOWN) ) p_dec->fmt_in.i_level = p_context->level; return VLC_SUCCESS; } static int ffmpeg_OpenVa(decoder_t *p_dec, AVCodecContext *p_context, enum AVPixelFormat hwfmt, enum AVPixelFormat swfmt, const AVPixFmtDescriptor *src_desc, vlc_sem_t *open_lock) { decoder_sys_t *p_sys = p_dec->p_sys; if( hwfmt == AV_PIX_FMT_NONE ) return VLC_EGENERIC; p_dec->fmt_out.video.i_chroma = vlc_va_GetChroma(hwfmt, swfmt); if (p_dec->fmt_out.video.i_chroma == 0) return VLC_EGENERIC; /* Unknown brand of hardware acceleration */ if (p_context->width == 0 || p_context->height == 0) { /* should never happen */ msg_Err(p_dec, "unspecified video dimensions"); return VLC_EGENERIC; } const AVPixFmtDescriptor *dsc = av_pix_fmt_desc_get(hwfmt); msg_Dbg(p_dec, "trying format %s", dsc ? dsc->name : "unknown"); if (lavc_UpdateVideoFormat(p_dec, p_context, hwfmt, swfmt)) return VLC_EGENERIC; /* Unsupported brand of hardware acceleration */ if (open_lock) vlc_sem_post(open_lock); picture_t *test_pic = decoder_NewPicture(p_dec); assert(!test_pic || test_pic->format.i_chroma == p_dec->fmt_out.video.i_chroma); vlc_va_t *va = vlc_va_New(VLC_OBJECT(p_dec), p_context, src_desc, hwfmt, &p_dec->fmt_in, test_pic ? test_pic->p_sys : NULL); if (open_lock) vlc_sem_wait(open_lock); if (test_pic) picture_Release(test_pic); if (va == NULL) { return VLC_EGENERIC; /* Unsupported codec profile or such */ } if (va->description != NULL) msg_Info(p_dec, "Using %s for hardware decoding", va->description); p_sys->p_va = va; p_sys->pix_fmt = hwfmt; p_context->draw_horiz_band = NULL; return VLC_SUCCESS; } static const enum PixelFormat hwfmts[] = { #ifdef _WIN32 #if LIBAV_UTIL_VERSION_CHECK(54, 13, 1, 24, 100) AV_PIX_FMT_D3D11VA_VLD, #endif AV_PIX_FMT_DXVA2_VLD, #endif AV_PIX_FMT_VAAPI, #if (LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(52, 4, 0)) AV_PIX_FMT_VDPAU, #endif AV_PIX_FMT_NONE, }; static int ExtractAV1Profile(AVCodecContext *p_context, const es_format_t *fmt_in, decoder_sys_t *p_sys) { av1_OBU_sequence_header_t *sequence_hdr = NULL; unsigned w, h; if (fmt_in->i_extra > 4) { // in ISOBMFF/WebM/Matroska the first 4 bytes are from the AV1CodecConfigurationBox // and then one or more OBU const uint8_t *obu_start = ((const uint8_t*) fmt_in->p_extra) + 4; int obu_size = fmt_in->i_extra - 4; if (AV1_OBUIsValid(obu_start, obu_size) && AV1_OBUGetType(obu_start) == AV1_OBU_SEQUENCE_HEADER) sequence_hdr = AV1_OBU_parse_sequence_header(obu_start, obu_size); } if (sequence_hdr == NULL) return VLC_EGENERIC; // fill the AVCodecContext with the values from the sequence header // so we can create the expected VA right away: // coded_width, coded_height, framerate, profile and sw_pix_fmt vlc_fourcc_t chroma = AV1_get_chroma(sequence_hdr); if (chroma == 0) { AV1_release_sequence_header(sequence_hdr); return VLC_EGENERIC; } p_context->sw_pix_fmt = FindFfmpegChroma(chroma); if (p_context->sw_pix_fmt == AV_PIX_FMT_NONE) { AV1_release_sequence_header(sequence_hdr); return VLC_EGENERIC; } AV1_get_frame_max_dimensions(sequence_hdr, &w, &h); p_context->coded_width = p_context->width = w; p_context->coded_height = p_context->height = h; if (!fmt_in->video.i_frame_rate || !fmt_in->video.i_frame_rate_base) { unsigned num, den; if (AV1_get_frame_rate(sequence_hdr, &num, &den)) { p_context->framerate.num = num; p_context->framerate.den = den; } } int tier; AV1_get_profile_level(sequence_hdr, &p_sys->profile, &p_sys->level, &tier); AV1_release_sequence_header(sequence_hdr); return VLC_SUCCESS; } int InitVideoHwDec( vlc_object_t *obj ) { #ifdef _WIN32 decoder_t *p_dec = container_of(obj, decoder_t, obj); if (p_dec->fmt_in.i_codec != VLC_CODEC_AV1) return VLC_EGENERIC; decoder_sys_t *p_sys = calloc(1, sizeof(*p_sys)); if( unlikely(p_sys == NULL) ) return VLC_ENOMEM; const AVCodec *p_codec; AVCodecContext *p_context = ffmpeg_AllocContext( p_dec, &p_codec ); if( unlikely(p_context == NULL) ) { free(p_sys); return VLC_ENOMEM; } if (ExtractAV1Profile(p_context, &p_dec->fmt_in, p_sys) != VLC_SUCCESS) goto failed; p_dec->p_sys = p_sys; p_sys->p_context = p_context; p_sys->p_codec = p_codec; p_sys->pix_fmt = AV_PIX_FMT_NONE; p_sys->b_hardware_only = true; int res = InitVideoDecCommon( p_dec ); if (res != VLC_SUCCESS) return res; const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(p_context->sw_pix_fmt); for( size_t i = 0; hwfmts[i] != AV_PIX_FMT_NONE; i++ ) { if (ffmpeg_OpenVa(p_dec, p_context, hwfmts[i], p_context->sw_pix_fmt, src_desc, NULL) == VLC_SUCCESS) // we have a matching hardware decoder return VLC_SUCCESS; } EndVideoDec(obj); return VLC_EGENERIC; failed: avcodec_free_context( &p_context ); free(p_sys); #endif return VLC_EGENERIC; } /***************************************************************************** * InitVideo: initialize the video decoder ***************************************************************************** * the ffmpeg codec will be opened, some memory allocated. The vout is not yet * opened (done after the first decoded frame). *****************************************************************************/ int InitVideoDec( vlc_object_t *obj ) { decoder_t *p_dec = (decoder_t *)obj; const AVCodec *p_codec; AVCodecContext *p_context = ffmpeg_AllocContext( p_dec, &p_codec ); if( p_context == NULL ) return VLC_EGENERIC; /* Allocate the memory needed to store the decoder's structure */ decoder_sys_t *p_sys = calloc( 1, sizeof(*p_sys) ); if( unlikely(p_sys == NULL) ) { avcodec_free_context( &p_context ); return VLC_ENOMEM; } p_dec->p_sys = p_sys; p_sys->p_context = p_context; p_sys->p_codec = p_codec; p_sys->profile = -1; p_sys->level = -1; p_sys->b_hardware_only = false; return InitVideoDecCommon( p_dec ); } /***************************************************************************** * Flush: *****************************************************************************/ static void Flush( decoder_t *p_dec ) { decoder_sys_t *p_sys = p_dec->p_sys; AVCodecContext *p_context = p_sys->p_context; date_Set(&p_sys->pts, VLC_TICK_INVALID); /* To make sure we recover properly */ p_sys->i_late_frames = 0; p_sys->b_draining = false; cc_Flush( &p_sys->cc ); /* Abort pictures in order to unblock all avcodec workers threads waiting * for a picture. This will avoid a deadlock between avcodec_flush_buffers * and workers threads */ decoder_AbortPictures( p_dec, true ); post_mt( p_sys ); /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */ if( avcodec_is_open( p_context ) ) avcodec_flush_buffers( p_context ); wait_mt( p_sys ); /* Reset cancel state to false */ decoder_AbortPictures( p_dec, false ); } static bool check_block_validity( decoder_sys_t *p_sys, block_t *block ) { if( !block) return true; if( block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) ) { date_Set( &p_sys->pts, VLC_TICK_INVALID ); /* To make sure we recover properly */ cc_Flush( &p_sys->cc ); p_sys->i_late_frames = 0; if( block->i_flags & BLOCK_FLAG_CORRUPTED ) { block_Release( block ); return false; } } return true; } static bool check_block_being_late( decoder_sys_t *p_sys, block_t *block, vlc_tick_t current_time) { if( !block ) return false; if( block->i_flags & BLOCK_FLAG_PREROLL ) { /* Do not care about late frames when prerolling * TODO avoid decoding of non reference frame * (ie all B except for H264 where it depends only on nal_ref_idc) */ p_sys->i_late_frames = 0; p_sys->b_from_preroll = true; p_sys->i_last_late_delay = INT64_MAX; } if( p_sys->i_late_frames <= 0 ) return false; if( current_time - p_sys->i_late_frames_start > (5*CLOCK_FREQ)) { date_Set( &p_sys->pts, VLC_TICK_INVALID ); /* To make sure we recover properly */ block_Release( block ); p_sys->i_late_frames--; return true; } return false; } static bool check_frame_should_be_dropped( decoder_sys_t *p_sys, AVCodecContext *p_context, bool *b_need_output_picture ) { if( p_sys->i_late_frames <= 4) return false; *b_need_output_picture = false; if( p_sys->i_late_frames < 12 ) { p_context->skip_frame = (p_sys->i_skip_frame <= AVDISCARD_NONREF) ? AVDISCARD_NONREF : p_sys->i_skip_frame; } else { /* picture too late, won't decode * but break picture until a new I, and for mpeg4 ...*/ p_sys->i_late_frames--; /* needed else it will never be decrease */ return true; } return false; } static vlc_tick_t interpolate_next_pts( decoder_t *p_dec, AVFrame *frame ) { decoder_sys_t *p_sys = p_dec->p_sys; AVCodecContext *p_context = p_sys->p_context; if( date_Get( &p_sys->pts ) == VLC_TICK_INVALID || p_sys->pts.i_divider_num == 0 ) return VLC_TICK_INVALID; #if LIBAVCODEC_VERSION_CHECK( 60, 12, 100 ) int i_tick = p_context->codec_descriptor->props & AV_CODEC_PROP_FIELDS ? 2 : 1; #else int i_tick = p_context->ticks_per_frame; #endif /* interpolate the next PTS */ return date_Increment( &p_sys->pts, i_tick + frame->repeat_pict ); } static void update_late_frame_count( decoder_t *p_dec, block_t *p_block, vlc_tick_t current_time, vlc_tick_t i_pts, vlc_tick_t i_next_pts ) { decoder_sys_t *p_sys = p_dec->p_sys; /* Update frame late count (except when doing preroll) */ vlc_tick_t i_display_date = VLC_TICK_INVALID; if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) ) i_display_date = decoder_GetDisplayDate( p_dec, i_pts ); vlc_tick_t i_threshold = i_next_pts != VLC_TICK_INVALID ? (i_next_pts - i_pts) / 2 : 20000; if( i_display_date > VLC_TICK_INVALID && i_display_date + i_threshold <= current_time ) { /* Out of preroll, consider only late frames on rising delay */ if( p_sys->b_from_preroll ) { if( p_sys->i_last_late_delay > current_time - i_display_date ) { p_sys->i_last_late_delay = current_time - i_display_date; return; } p_sys->b_from_preroll = false; } p_sys->i_late_frames++; if( p_sys->i_late_frames == 1 ) p_sys->i_late_frames_start = current_time; } else { p_sys->i_late_frames = 0; } } static int DecodeSidedata( decoder_t *p_dec, const AVFrame *frame, picture_t *p_pic ) { decoder_sys_t *p_sys = p_dec->p_sys; bool format_changed = false; #if LIBAVUTIL_VERSION_CHECK( 55, 16, 101 ) #define FROM_AVRAT(default_factor, avrat) \ (uint64_t)(default_factor) * (avrat).num / (avrat).den const AVFrameSideData *metadata = av_frame_get_side_data( frame, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA ); if ( metadata ) { const AVMasteringDisplayMetadata *hdr_meta = (const AVMasteringDisplayMetadata *) metadata->data; if ( hdr_meta->has_luminance ) { #define ST2086_LUMA_FACTOR 10000 p_pic->format.mastering.max_luminance = FROM_AVRAT(ST2086_LUMA_FACTOR, hdr_meta->max_luminance); p_pic->format.mastering.min_luminance = FROM_AVRAT(ST2086_LUMA_FACTOR, hdr_meta->min_luminance); } if ( hdr_meta->has_primaries ) { #define ST2086_RED 2 #define ST2086_GREEN 0 #define ST2086_BLUE 1 #define LAV_RED 0 #define LAV_GREEN 1 #define LAV_BLUE 2 #define ST2086_PRIM_FACTOR 50000 p_pic->format.mastering.primaries[ST2086_RED*2 + 0] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->display_primaries[LAV_RED][0]); p_pic->format.mastering.primaries[ST2086_RED*2 + 1] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->display_primaries[LAV_RED][1]); p_pic->format.mastering.primaries[ST2086_GREEN*2 + 0] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->display_primaries[LAV_GREEN][0]); p_pic->format.mastering.primaries[ST2086_GREEN*2 + 1] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->display_primaries[LAV_GREEN][1]); p_pic->format.mastering.primaries[ST2086_BLUE*2 + 0] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->display_primaries[LAV_BLUE][0]); p_pic->format.mastering.primaries[ST2086_BLUE*2 + 1] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->display_primaries[LAV_BLUE][1]); p_pic->format.mastering.white_point[0] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->white_point[0]); p_pic->format.mastering.white_point[1] = FROM_AVRAT(ST2086_PRIM_FACTOR, hdr_meta->white_point[1]); } if ( memcmp( &p_dec->fmt_out.video.mastering, &p_pic->format.mastering, sizeof(p_pic->format.mastering) ) ) { p_dec->fmt_out.video.mastering = p_pic->format.mastering; format_changed = true; } #undef FROM_AVRAT } #endif #if LIBAVUTIL_VERSION_CHECK( 55, 60, 100 ) const AVFrameSideData *metadata_lt = av_frame_get_side_data( frame, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL ); if ( metadata_lt ) { const AVContentLightMetadata *light_meta = (const AVContentLightMetadata *) metadata_lt->data; p_pic->format.lighting.MaxCLL = light_meta->MaxCLL; p_pic->format.lighting.MaxFALL = light_meta->MaxFALL; if ( memcmp( &p_dec->fmt_out.video.lighting, &p_pic->format.lighting, sizeof(p_pic->format.lighting) ) ) { p_dec->fmt_out.video.lighting = p_pic->format.lighting; format_changed = true; } } #endif if (format_changed && decoder_UpdateVideoFormat( p_dec )) return -1; const AVFrameSideData *p_avcc = av_frame_get_side_data( frame, AV_FRAME_DATA_A53_CC ); if( p_avcc ) { cc_Extract( &p_sys->cc, CC_PAYLOAD_RAW, true, p_avcc->data, p_avcc->size ); if( p_sys->cc.b_reorder || p_sys->cc.i_data ) { block_t *p_cc = block_Alloc( p_sys->cc.i_data ); if( p_cc ) { memcpy( p_cc->p_buffer, p_sys->cc.p_data, p_sys->cc.i_data ); if( p_sys->cc.b_reorder ) p_cc->i_dts = p_cc->i_pts = p_pic->date; else p_cc->i_pts = p_cc->i_dts; decoder_cc_desc_t desc; desc.i_608_channels = p_sys->cc.i_608channels; desc.i_708_channels = p_sys->cc.i_708channels; desc.i_reorder_depth = 4; decoder_QueueCc( p_dec, p_cc, &desc ); } cc_Flush( &p_sys->cc ); } } return 0; } /***************************************************************************** * DecodeBlock: Called to decode one or more frames *****************************************************************************/ static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block, bool *error ) { decoder_sys_t *p_sys = p_dec->p_sys; AVCodecContext *p_context = p_sys->p_context; /* Boolean if we assume that we should get valid pic as result */ bool b_need_output_picture = true; /* Boolean for END_OF_SEQUENCE */ bool eos_spotted = false; block_t *p_block = pp_block ? *pp_block : NULL; vlc_tick_t current_time; if( !p_context->extradata_size && p_dec->fmt_in.i_extra ) { ffmpeg_InitCodec( p_dec ); if( !avcodec_is_open( p_context ) && OpenVideoCodec(p_dec) < 0 ) { if( p_block != NULL ) block_Release( p_block ); return NULL; } } if(!p_block && !(p_sys->p_codec->capabilities & AV_CODEC_CAP_DELAY) ) return NULL; if( !avcodec_is_open( p_context ) ) { if( p_block ) block_Release( p_block ); return NULL; } if( !check_block_validity( p_sys, p_block ) ) return NULL; current_time = mdate(); if( p_dec->b_frame_drop_allowed && check_block_being_late( p_sys, p_block, current_time) ) { msg_Err( p_dec, "more than 5 seconds of late video -> " "dropping frame (computer too slow ?)" ); return NULL; } /* A good idea could be to decode all I pictures and see for the other */ /* Defaults that if we aren't in prerolling, we want output picture same for if we are flushing (p_block==NULL) */ if( !p_block || !(p_block->i_flags & BLOCK_FLAG_PREROLL) ) b_need_output_picture = true; else b_need_output_picture = false; /* Change skip_frame config only if hurry_up is enabled */ if( p_sys->b_hurry_up ) { p_context->skip_frame = p_sys->i_skip_frame; /* Check also if we should/can drop the block and move to next block as trying to catchup the speed*/ if( p_dec->b_frame_drop_allowed && check_frame_should_be_dropped( p_sys, p_context, &b_need_output_picture ) ) { if( p_block ) block_Release( p_block ); msg_Warn( p_dec, "More than 11 late frames, dropping frame" ); return NULL; } } if( !b_need_output_picture ) { p_context->skip_frame = __MAX( p_context->skip_frame, AVDISCARD_NONREF ); } /* * Do the actual decoding now */ /* Don't forget that libavcodec requires a little more bytes * that the real frame size */ if( p_block && p_block->i_buffer > 0 ) { eos_spotted = ( p_block->i_flags & BLOCK_FLAG_END_OF_SEQUENCE ) != 0; p_block = block_Realloc( p_block, 0, p_block->i_buffer + FF_INPUT_BUFFER_PADDING_SIZE ); if( !p_block ) return NULL; p_block->i_buffer -= FF_INPUT_BUFFER_PADDING_SIZE; *pp_block = p_block; memset( p_block->p_buffer + p_block->i_buffer, 0, FF_INPUT_BUFFER_PADDING_SIZE ); } do { int ret; int i_used = 0; const bool b_has_data = ( p_block && p_block->i_buffer > 0 ); const bool b_start_drain = ((pp_block == NULL) || eos_spotted) && !p_sys->b_draining; post_mt( p_sys ); if( b_has_data || b_start_drain ) { AVPacket *pkt = av_packet_alloc(); if(!pkt) { *error = true; break; } if( b_has_data ) { pkt->data = p_block->p_buffer; pkt->size = p_block->i_buffer; pkt->pts = p_block->i_pts > VLC_TICK_INVALID ? p_block->i_pts : AV_NOPTS_VALUE; pkt->dts = p_block->i_dts > VLC_TICK_INVALID ? p_block->i_dts : AV_NOPTS_VALUE; /* Make sure we don't reuse the same timestamps twice */ p_block->i_pts = p_block->i_dts = VLC_TICK_INVALID; } else /* start drain */ { /* Return delayed frames if codec has CODEC_CAP_DELAY */ pkt->data = NULL; pkt->size = 0; p_sys->b_draining = true; } if( !p_sys->palette_sent ) { uint8_t *pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE); if (pal) { memcpy(pal, p_dec->fmt_in.video.p_palette->palette, AVPALETTE_SIZE); p_sys->palette_sent = true; } } ret = avcodec_send_packet(p_context, pkt); if( ret != 0 && ret != AVERROR(EAGAIN) ) { if (ret == AVERROR(ENOMEM) || ret == AVERROR(EINVAL)) { msg_Err(p_dec, "avcodec_send_packet critical error"); *error = true; } av_packet_free( &pkt ); break; } i_used = ret != AVERROR(EAGAIN) ? pkt->size : 0; av_packet_free( &pkt ); } AVFrame *frame = av_frame_alloc(); if (unlikely(frame == NULL)) { *error = true; break; } ret = avcodec_receive_frame(p_context, frame); if( ret != 0 && ret != AVERROR(EAGAIN) ) { if (ret == AVERROR(ENOMEM) || ret == AVERROR(EINVAL)) { msg_Err(p_dec, "avcodec_receive_frame critical error"); *error = true; } av_frame_free(&frame); /* After draining, we need to reset decoder with a flush */ if( ret == AVERROR_EOF ) { avcodec_flush_buffers( p_sys->p_context ); p_sys->b_draining = false; } break; } bool not_received_frame = ret; wait_mt( p_sys ); if( eos_spotted ) p_sys->b_first_frame = true; if( p_block ) { if( p_block->i_buffer <= 0 ) eos_spotted = false; /* Consumed bytes */ p_block->p_buffer += i_used; p_block->i_buffer -= i_used; } /* Nothing to display */ if( not_received_frame ) { av_frame_free(&frame); if( i_used == 0 ) break; continue; } /* Compute the PTS */ #if LIBAV_CODEC_VERSION_CHECK(57, 24, 0, 61, 100) # if LIBAVCODEC_VERSION_MICRO >= 100 vlc_tick_t i_pts = frame->best_effort_timestamp; # else vlc_tick_t i_pts = frame->pts; # endif #else vlc_tick_t i_pts = frame->pkt_pts; #endif if (i_pts == AV_NOPTS_VALUE ) i_pts = frame->pkt_dts; if( i_pts == AV_NOPTS_VALUE ) i_pts = date_Get( &p_sys->pts ); /* Interpolate the next PTS */ if( i_pts > VLC_TICK_INVALID ) date_Set( &p_sys->pts, i_pts ); const vlc_tick_t i_next_pts = interpolate_next_pts(p_dec, frame); update_late_frame_count( p_dec, p_block, current_time, i_pts, i_next_pts); if( !b_need_output_picture || ( !p_sys->p_va && !frame->linesize[0] ) || ( p_dec->b_frame_drop_allowed && (frame->flags & AV_FRAME_FLAG_CORRUPT) && !p_sys->b_show_corrupted ) ) { av_frame_free(&frame); continue; } if( p_context->pix_fmt == AV_PIX_FMT_PAL8 && !p_dec->fmt_out.video.p_palette ) { /* See AV_PIX_FMT_PAL8 comment in avc_GetVideoFormat(): update the * fmt_out palette and change the fmt_out chroma to request a new * vout */ assert( p_dec->fmt_out.video.i_chroma != VLC_CODEC_RGBP ); video_palette_t *p_palette; p_palette = p_dec->fmt_out.video.p_palette = malloc( sizeof(video_palette_t) ); if( !p_palette ) { *error = true; av_frame_free(&frame); break; } static_assert( sizeof(p_palette->palette) == AVPALETTE_SIZE, "Palette size mismatch between vlc and libavutil" ); assert( frame->data[1] != NULL ); memcpy( p_palette->palette, frame->data[1], AVPALETTE_SIZE ); p_palette->i_entries = AVPALETTE_COUNT; p_dec->fmt_out.video.i_chroma = VLC_CODEC_RGBP; if( decoder_UpdateVideoFormat( p_dec ) ) { av_frame_free(&frame); continue; } } picture_t *p_pic = frame->opaque; if( p_pic == NULL ) { /* When direct rendering is not used, get_format() and get_buffer() * might not be called. The output video format must be set here * then picture buffer can be allocated. */ if (p_sys->p_va == NULL && lavc_UpdateVideoFormat(p_dec, p_context, p_context->pix_fmt, p_context->pix_fmt) == 0) p_pic = decoder_NewPicture(p_dec); if( !p_pic ) { av_frame_free(&frame); break; } /* Fill picture_t from AVFrame */ if( lavc_CopyPicture( p_dec, p_pic, frame ) != VLC_SUCCESS ) { av_frame_free(&frame); picture_Release( p_pic ); break; } } else { /* Some codecs can return the same frame multiple times. By the * time that the same frame is returned a second time, it will be * too late to clone the underlying picture. So clone proactively. * A single picture CANNOT be queued multiple times. */ p_pic = picture_Clone( p_pic ); if( unlikely(p_pic == NULL) ) { av_frame_free(&frame); break; } } if( !p_dec->fmt_in.video.i_sar_num || !p_dec->fmt_in.video.i_sar_den ) { /* Fetch again the aspect ratio in case it changed */ p_dec->fmt_out.video.i_sar_num = p_context->sample_aspect_ratio.num; p_dec->fmt_out.video.i_sar_den = p_context->sample_aspect_ratio.den; if( !p_dec->fmt_out.video.i_sar_num || !p_dec->fmt_out.video.i_sar_den ) { p_dec->fmt_out.video.i_sar_num = 1; p_dec->fmt_out.video.i_sar_den = 1; } } p_pic->date = i_pts; /* Hack to force display of still pictures */ p_pic->b_force = p_sys->b_first_frame; p_pic->i_nb_fields = 2 + frame->repeat_pict; #if LIBAVUTIL_VERSION_CHECK( 58, 7, 100 ) p_pic->b_progressive = !(frame->flags & AV_FRAME_FLAG_INTERLACED); p_pic->b_top_field_first = !!(frame->flags & AV_FRAME_FLAG_TOP_FIELD_FIRST); #else p_pic->b_progressive = !frame->interlaced_frame; p_pic->b_top_field_first = frame->top_field_first; #endif if (DecodeSidedata(p_dec, frame, p_pic)) i_pts = VLC_TICK_INVALID; av_frame_free(&frame); /* Send decoded frame to vout */ if (i_pts > VLC_TICK_INVALID) { p_sys->b_first_frame = false; return p_pic; } else picture_Release( p_pic ); } while( true ); if( p_block ) block_Release( p_block ); if( p_sys->b_draining ) { avcodec_flush_buffers( p_sys->p_context ); p_sys->b_draining = false; } return NULL; } static int DecodeVideo( decoder_t *p_dec, block_t *p_block ) { block_t **pp_block = p_block ? &p_block : NULL; picture_t *p_pic; bool error = false; while( ( p_pic = DecodeBlock( p_dec, pp_block, &error ) ) != NULL ) decoder_QueueVideo( p_dec, p_pic ); return error ? VLCDEC_ECRITICAL : VLCDEC_SUCCESS; } /***************************************************************************** * EndVideo: decoder destruction ***************************************************************************** * This function is called when the thread ends after a successful * initialization. *****************************************************************************/ void EndVideoDec( vlc_object_t *obj ) { decoder_t *p_dec = (decoder_t *)obj; decoder_sys_t *p_sys = p_dec->p_sys; AVCodecContext *ctx = p_sys->p_context; void *hwaccel_context; post_mt( p_sys ); /* do not flush buffers if codec hasn't been opened (theora/vorbis/VC1) */ if( avcodec_is_open( ctx ) ) avcodec_flush_buffers( ctx ); wait_mt( p_sys ); cc_Flush( &p_sys->cc ); hwaccel_context = ctx->hwaccel_context; avcodec_free_context( &ctx ); if( p_sys->p_va ) vlc_va_Delete( p_sys->p_va, &hwaccel_context ); vlc_sem_destroy( &p_sys->sem_mt ); free( p_sys ); } /***************************************************************************** * ffmpeg_InitCodec: setup codec extra initialization data for ffmpeg *****************************************************************************/ static void ffmpeg_InitCodec( decoder_t *p_dec ) { decoder_sys_t *p_sys = p_dec->p_sys; size_t i_size = p_dec->fmt_in.i_extra; if( !i_size ) return; if( p_sys->p_codec->id == AV_CODEC_ID_SVQ3 ) { uint8_t *p; p_sys->p_context->extradata_size = i_size + 12; p = p_sys->p_context->extradata = av_malloc( p_sys->p_context->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE ); if( !p ) return; memcpy( &p[0], "SVQ3", 4 ); memset( &p[4], 0, 8 ); memcpy( &p[12], p_dec->fmt_in.p_extra, i_size ); /* Now remove all atoms before the SMI one */ if( p_sys->p_context->extradata_size > 0x5a && strncmp( (char*)&p[0x56], "SMI ", 4 ) ) { uint8_t *psz = &p[0x52]; while( psz < &p[p_sys->p_context->extradata_size - 8] ) { uint_fast32_t atom_size = GetDWBE( psz ); if( atom_size <= 1 ) { /* FIXME handle 1 as long size */ break; } if( !strncmp( (char*)&psz[4], "SMI ", 4 ) ) { memmove( &p[0x52], psz, &p[p_sys->p_context->extradata_size] - psz ); break; } psz += atom_size; } } } else { p_sys->p_context->extradata_size = i_size; p_sys->p_context->extradata = av_malloc( i_size + FF_INPUT_BUFFER_PADDING_SIZE ); if( p_sys->p_context->extradata ) { memcpy( p_sys->p_context->extradata, p_dec->fmt_in.p_extra, i_size ); memset( p_sys->p_context->extradata + i_size, 0, FF_INPUT_BUFFER_PADDING_SIZE ); } } } static void lavc_ReleaseFrame(void *opaque, uint8_t *data) { (void) data; picture_t *picture = opaque; picture_Release(picture); } static int lavc_va_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, picture_t *pic) { decoder_t *dec = ctx->opaque; vlc_va_t *va = dec->p_sys->p_va; if (vlc_va_Get(va, pic, &frame->data[0])) { msg_Err(dec, "hardware acceleration picture allocation failed"); picture_Release(pic); return -1; } assert(frame->data[0] != NULL); /* data[0] must be non-NULL for libavcodec internal checks. * data[3] actually contains the format-specific surface handle. */ frame->data[3] = frame->data[0]; frame->buf[0] = av_buffer_create(frame->data[0], 0, lavc_ReleaseFrame, pic, 0); if (unlikely(frame->buf[0] == NULL)) { lavc_ReleaseFrame(pic, frame->data[0]); return -1; } frame->opaque = pic; return 0; } static int lavc_dr_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, picture_t *pic) { decoder_t *dec = (decoder_t *)ctx->opaque; decoder_sys_t *sys = dec->p_sys; if (ctx->pix_fmt == AV_PIX_FMT_PAL8) goto error; int width = frame->width; int height = frame->height; int aligns[AV_NUM_DATA_POINTERS]; avcodec_align_dimensions2(ctx, &width, &height, aligns); /* Check that the picture is suitable for libavcodec */ assert(pic->p[0].i_pitch >= width * pic->p[0].i_pixel_pitch); assert(pic->p[0].i_lines >= height); for (int i = 0; i < pic->i_planes; i++) { if (pic->p[i].i_pitch % aligns[i]) { if (!atomic_exchange(&sys->b_dr_failure, true)) msg_Warn(dec, "plane %d: pitch not aligned (%d%%%d): disabling direct rendering", i, pic->p[i].i_pitch, aligns[i]); goto error; } if (((uintptr_t)pic->p[i].p_pixels) % aligns[i]) { if (!atomic_exchange(&sys->b_dr_failure, true)) msg_Warn(dec, "plane %d not aligned: disabling direct rendering", i); goto error; } } /* Allocate buffer references and initialize planes */ assert(pic->i_planes < PICTURE_PLANE_MAX); static_assert(PICTURE_PLANE_MAX <= AV_NUM_DATA_POINTERS, "Oops!"); for (int i = 0; i < pic->i_planes; i++) { uint8_t *data = pic->p[i].p_pixels; int size = pic->p[i].i_pitch * pic->p[i].i_lines; frame->data[i] = data; frame->linesize[i] = pic->p[i].i_pitch; frame->buf[i] = av_buffer_create(data, size, lavc_ReleaseFrame, pic, 0); if (unlikely(frame->buf[i] == NULL)) { while (i > 0) av_buffer_unref(&frame->buf[--i]); goto error; } picture_Hold(pic); } frame->opaque = pic; /* The loop above held one reference to the picture for each plane. */ picture_Release(pic); return 0; error: picture_Release(pic); return -1; } /** * Callback used by libavcodec to get a frame buffer. * * It is used for direct rendering as well as to get the right PTS for each * decoded picture (even in indirect rendering mode). */ static int lavc_GetFrame(struct AVCodecContext *ctx, AVFrame *frame, int flags) { decoder_t *dec = ctx->opaque; decoder_sys_t *sys = dec->p_sys; picture_t *pic; for (unsigned i = 0; i < AV_NUM_DATA_POINTERS; i++) { frame->data[i] = NULL; frame->linesize[i] = 0; frame->buf[i] = NULL; } frame->opaque = NULL; wait_mt(sys); if (sys->p_va == NULL) { if (!sys->b_direct_rendering) { post_mt(sys); return avcodec_default_get_buffer2(ctx, frame, flags); } /* Most unaccelerated decoders do not call get_format(), so we need to * update the output video format here. The MT semaphore must be held * to protect p_dec->fmt_out. */ if (lavc_UpdateVideoFormat(dec, ctx, ctx->pix_fmt, ctx->pix_fmt)) { post_mt(sys); return -1; } } post_mt(sys); pic = decoder_NewPicture(dec); if (pic == NULL) return -ENOMEM; if (sys->p_va != NULL) return lavc_va_GetFrame(ctx, frame, pic); /* Some codecs set pix_fmt only after the 1st frame has been decoded, * so we need to check for direct rendering again. */ int ret = lavc_dr_GetFrame(ctx, frame, pic); if (ret) ret = avcodec_default_get_buffer2(ctx, frame, flags); return ret; } static enum PixelFormat ffmpeg_GetFormat( AVCodecContext *p_context, const enum PixelFormat *pi_fmt ) { decoder_t *p_dec = p_context->opaque; decoder_sys_t *p_sys = p_dec->p_sys; video_format_t fmt; /* Enumerate available formats */ enum PixelFormat defaultfmt = avcodec_default_get_format(p_context, pi_fmt); enum PixelFormat swfmt = AV_PIX_FMT_NONE; bool can_hwaccel = false; for (size_t i = 0; pi_fmt[i] != AV_PIX_FMT_NONE; i++) { const AVPixFmtDescriptor *dsc = av_pix_fmt_desc_get(pi_fmt[i]); if (dsc == NULL) continue; bool hwaccel = (dsc->flags & AV_PIX_FMT_FLAG_HWACCEL) != 0; msg_Dbg( p_dec, "available %sware decoder output format %d (%s)", hwaccel ? "hard" : "soft", pi_fmt[i], dsc->name ); if (hwaccel) { /* The default fmt is a hw format, it can happen with some va * implementations (when using a hw_device_ctx). */ if (defaultfmt == pi_fmt[i]) defaultfmt = AV_PIX_FMT_NONE; can_hwaccel = true; } else if (swfmt == AV_PIX_FMT_NONE && !p_sys->b_hardware_only) swfmt = pi_fmt[i]; } /* Use the default fmt in priority of any sw fmt if the default fmt is a hw * one */ if (defaultfmt != AV_PIX_FMT_NONE) { if (p_sys->b_hardware_only) { if (defaultfmt != p_context->sw_pix_fmt) { // the source format changed and we didn't detect it vlc_assert_unreachable(); } } swfmt = defaultfmt; } if (p_sys->pix_fmt == AV_PIX_FMT_NONE) goto no_reuse; /* If the format did not actually change (e.g. seeking), try to reuse the * existing output format, and if present, hardware acceleration back-end. * This avoids resetting the pipeline downstream. This also avoids * needlessly probing for hardware acceleration support. */ if (lavc_GetVideoFormat(p_dec, &fmt, p_context, p_sys->pix_fmt, swfmt) != 0) { msg_Dbg(p_dec, "get format failed"); goto no_reuse; } if (fmt.i_width != p_dec->fmt_out.video.i_width || fmt.i_height != p_dec->fmt_out.video.i_height) { msg_Dbg(p_dec, "mismatched dimensions %ux%u was %ux%u", fmt.i_width, fmt.i_height, p_dec->fmt_out.video.i_width, p_dec->fmt_out.video.i_height); goto no_reuse; } if (p_context->profile != p_sys->profile || p_context->level > p_sys->level) { msg_Dbg(p_dec, "mismatched profile level %d/%d was %d/%d", p_context->profile, p_context->level, p_sys->profile, p_sys->level); goto no_reuse; } for (size_t i = 0; pi_fmt[i] != AV_PIX_FMT_NONE; i++) if (pi_fmt[i] == p_sys->pix_fmt) { if (lavc_UpdateVideoFormat(p_dec, p_context, p_sys->pix_fmt, swfmt) == 0) { msg_Dbg(p_dec, "reusing decoder output format %d", pi_fmt[i]); return p_sys->pix_fmt; } } no_reuse: if (p_sys->p_va != NULL) { msg_Err(p_dec, "existing hardware acceleration cannot be reused"); // the decoder changes have to be handled outside of lavc so that // switching to a software decoder will not silently decode nothing // (get_format will fail to use AV_PIX_FMT_NONE) assert(!p_sys->b_hardware_only); vlc_va_Delete(p_sys->p_va, &p_context->hwaccel_context); p_sys->p_va = NULL; } p_sys->profile = p_context->profile; p_sys->level = p_context->level; if (!can_hwaccel) return swfmt; #if (LIBAVCODEC_VERSION_MICRO >= 100) && !(LIBAVCODEC_VERSION_CHECK(57, 83, 101)) if (p_context->active_thread_type) { msg_Warn(p_dec, "thread type %d: disabling hardware acceleration", p_context->active_thread_type); return swfmt; } #endif wait_mt(p_sys); const AVPixFmtDescriptor *src_desc = av_pix_fmt_desc_get(swfmt); for( size_t i = 0; hwfmts[i] != AV_PIX_FMT_NONE; i++ ) { enum PixelFormat hwfmt = AV_PIX_FMT_NONE; for( size_t j = 0; hwfmt == AV_PIX_FMT_NONE && pi_fmt[j] != AV_PIX_FMT_NONE; j++ ) if( hwfmts[i] == pi_fmt[j] ) hwfmt = hwfmts[i]; if (ffmpeg_OpenVa(p_dec, p_context, hwfmt, swfmt, src_desc, &p_sys->sem_mt) != VLC_SUCCESS) continue; post_mt(p_sys); return hwfmt; } post_mt(p_sys); /* Fallback to default behaviour */ p_sys->pix_fmt = swfmt; return swfmt; }