mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
32d021cfa6
a thread count of 0 is treated the same as 1, use av_cpu_count() to get
the correct thread count when auto threads is requested.
this matches the fix in libvpxenc:
27df34bf1f avcodec/libvpxenc: fix setting amount of threads used for encoding
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: James Zern <jzern@google.com>
316 lines
11 KiB
C
316 lines
11 KiB
C
/*
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* Copyright (c) 2010, Google, Inc.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* VP8/9 decoder support via libvpx
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*/
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#define VPX_CODEC_DISABLE_COMPAT 1
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#include <vpx/vpx_decoder.h>
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#include <vpx/vp8dx.h>
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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#include "internal.h"
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#include "libvpx.h"
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#include "profiles.h"
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typedef struct VPxDecoderContext {
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struct vpx_codec_ctx decoder;
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struct vpx_codec_ctx decoder_alpha;
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int has_alpha_channel;
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} VPxContext;
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static av_cold int vpx_init(AVCodecContext *avctx,
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const struct vpx_codec_iface *iface,
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int is_alpha_decoder)
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{
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VPxContext *ctx = avctx->priv_data;
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struct vpx_codec_dec_cfg deccfg = {
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.threads = FFMIN(avctx->thread_count ? avctx->thread_count : av_cpu_count(), 16)
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};
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av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
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av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
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if (vpx_codec_dec_init(
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is_alpha_decoder ? &ctx->decoder_alpha : &ctx->decoder,
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iface, &deccfg, 0) != VPX_CODEC_OK) {
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const char *error = vpx_codec_error(&ctx->decoder);
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av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n",
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error);
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return AVERROR(EINVAL);
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}
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return 0;
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}
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// returns 0 on success, AVERROR_INVALIDDATA otherwise
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static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img,
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int has_alpha_channel)
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{
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static const enum AVColorSpace colorspaces[8] = {
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AVCOL_SPC_UNSPECIFIED, AVCOL_SPC_BT470BG, AVCOL_SPC_BT709, AVCOL_SPC_SMPTE170M,
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AVCOL_SPC_SMPTE240M, AVCOL_SPC_BT2020_NCL, AVCOL_SPC_RESERVED, AVCOL_SPC_RGB,
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};
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#if VPX_IMAGE_ABI_VERSION >= 4
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static const enum AVColorRange color_ranges[] = {
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AVCOL_RANGE_MPEG, AVCOL_RANGE_JPEG
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};
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avctx->color_range = color_ranges[img->range];
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#endif
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avctx->colorspace = colorspaces[img->cs];
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if (avctx->codec_id == AV_CODEC_ID_VP8 && img->fmt != VPX_IMG_FMT_I420)
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return AVERROR_INVALIDDATA;
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switch (img->fmt) {
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case VPX_IMG_FMT_I420:
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if (avctx->codec_id == AV_CODEC_ID_VP9)
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avctx->profile = FF_PROFILE_VP9_0;
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avctx->pix_fmt =
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has_alpha_channel ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
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return 0;
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#if CONFIG_LIBVPX_VP9_DECODER
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case VPX_IMG_FMT_I422:
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avctx->profile = FF_PROFILE_VP9_1;
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avctx->pix_fmt = AV_PIX_FMT_YUV422P;
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return 0;
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case VPX_IMG_FMT_I440:
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avctx->profile = FF_PROFILE_VP9_1;
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avctx->pix_fmt = AV_PIX_FMT_YUV440P;
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return 0;
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case VPX_IMG_FMT_I444:
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avctx->profile = FF_PROFILE_VP9_1;
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avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
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AV_PIX_FMT_GBRP : AV_PIX_FMT_YUV444P;
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return 0;
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case VPX_IMG_FMT_I42016:
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avctx->profile = FF_PROFILE_VP9_2;
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if (img->bit_depth == 10) {
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avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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case VPX_IMG_FMT_I42216:
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avctx->profile = FF_PROFILE_VP9_3;
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if (img->bit_depth == 10) {
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avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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case VPX_IMG_FMT_I44016:
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avctx->profile = FF_PROFILE_VP9_3;
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if (img->bit_depth == 10) {
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avctx->pix_fmt = AV_PIX_FMT_YUV440P10;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = AV_PIX_FMT_YUV440P12;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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case VPX_IMG_FMT_I44416:
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avctx->profile = FF_PROFILE_VP9_3;
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if (img->bit_depth == 10) {
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avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
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AV_PIX_FMT_GBRP10 : AV_PIX_FMT_YUV444P10;
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return 0;
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} else if (img->bit_depth == 12) {
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avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
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AV_PIX_FMT_GBRP12 : AV_PIX_FMT_YUV444P12;
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return 0;
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} else {
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return AVERROR_INVALIDDATA;
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}
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#endif
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default:
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return AVERROR_INVALIDDATA;
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}
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}
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static int decode_frame(AVCodecContext *avctx, vpx_codec_ctx_t *decoder,
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uint8_t *data, uint32_t data_sz)
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{
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if (vpx_codec_decode(decoder, data, data_sz, NULL, 0) != VPX_CODEC_OK) {
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const char *error = vpx_codec_error(decoder);
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const char *detail = vpx_codec_error_detail(decoder);
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av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
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if (detail) {
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av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
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detail);
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}
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return AVERROR_INVALIDDATA;
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}
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return 0;
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}
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static int vpx_decode(AVCodecContext *avctx,
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void *data, int *got_frame, AVPacket *avpkt)
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{
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VPxContext *ctx = avctx->priv_data;
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AVFrame *picture = data;
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const void *iter = NULL;
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const void *iter_alpha = NULL;
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struct vpx_image *img, *img_alpha;
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int ret;
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uint8_t *side_data = NULL;
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int side_data_size = 0;
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ret = decode_frame(avctx, &ctx->decoder, avpkt->data, avpkt->size);
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if (ret)
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return ret;
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side_data = av_packet_get_side_data(avpkt,
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AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL,
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&side_data_size);
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if (side_data_size > 1) {
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const uint64_t additional_id = AV_RB64(side_data);
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side_data += 8;
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side_data_size -= 8;
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if (additional_id == 1) { // 1 stands for alpha channel data.
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if (!ctx->has_alpha_channel) {
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ctx->has_alpha_channel = 1;
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ret = vpx_init(avctx,
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#if CONFIG_LIBVPX_VP8_DECODER && CONFIG_LIBVPX_VP9_DECODER
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(avctx->codec_id == AV_CODEC_ID_VP8) ?
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&vpx_codec_vp8_dx_algo : &vpx_codec_vp9_dx_algo,
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#elif CONFIG_LIBVPX_VP8_DECODER
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&vpx_codec_vp8_dx_algo,
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#else
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&vpx_codec_vp9_dx_algo,
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#endif
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1);
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if (ret)
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return ret;
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}
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ret = decode_frame(avctx, &ctx->decoder_alpha, side_data,
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side_data_size);
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if (ret)
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return ret;
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}
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}
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if ((img = vpx_codec_get_frame(&ctx->decoder, &iter)) &&
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(!ctx->has_alpha_channel ||
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(img_alpha = vpx_codec_get_frame(&ctx->decoder_alpha, &iter_alpha)))) {
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uint8_t *planes[4];
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int linesizes[4];
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if (img->d_w > img->w || img->d_h > img->h) {
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av_log(avctx, AV_LOG_ERROR, "Display dimensions %dx%d exceed storage %dx%d\n",
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img->d_w, img->d_h, img->w, img->h);
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return AVERROR_EXTERNAL;
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}
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if ((ret = set_pix_fmt(avctx, img, ctx->has_alpha_channel)) < 0) {
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av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
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img->fmt, img->bit_depth);
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return ret;
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}
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if ((int) img->d_w != avctx->width || (int) img->d_h != avctx->height) {
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av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
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avctx->width, avctx->height, img->d_w, img->d_h);
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ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
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if (ret < 0)
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return ret;
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}
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if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
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return ret;
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planes[0] = img->planes[VPX_PLANE_Y];
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planes[1] = img->planes[VPX_PLANE_U];
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planes[2] = img->planes[VPX_PLANE_V];
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planes[3] =
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ctx->has_alpha_channel ? img_alpha->planes[VPX_PLANE_Y] : NULL;
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linesizes[0] = img->stride[VPX_PLANE_Y];
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linesizes[1] = img->stride[VPX_PLANE_U];
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linesizes[2] = img->stride[VPX_PLANE_V];
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linesizes[3] =
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ctx->has_alpha_channel ? img_alpha->stride[VPX_PLANE_Y] : 0;
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av_image_copy(picture->data, picture->linesize, (const uint8_t**)planes,
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linesizes, avctx->pix_fmt, img->d_w, img->d_h);
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*got_frame = 1;
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}
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return avpkt->size;
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}
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static av_cold int vpx_free(AVCodecContext *avctx)
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{
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VPxContext *ctx = avctx->priv_data;
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vpx_codec_destroy(&ctx->decoder);
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if (ctx->has_alpha_channel)
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vpx_codec_destroy(&ctx->decoder_alpha);
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return 0;
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}
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#if CONFIG_LIBVPX_VP8_DECODER
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static av_cold int vp8_init(AVCodecContext *avctx)
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{
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return vpx_init(avctx, &vpx_codec_vp8_dx_algo, 0);
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}
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AVCodec ff_libvpx_vp8_decoder = {
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.name = "libvpx",
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.long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_VP8,
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.priv_data_size = sizeof(VPxContext),
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.init = vp8_init,
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.close = vpx_free,
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.decode = vpx_decode,
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.capabilities = AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_DR1,
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.wrapper_name = "libvpx",
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};
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#endif /* CONFIG_LIBVPX_VP8_DECODER */
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#if CONFIG_LIBVPX_VP9_DECODER
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static av_cold int vp9_init(AVCodecContext *avctx)
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{
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return vpx_init(avctx, &vpx_codec_vp9_dx_algo, 0);
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}
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AVCodec ff_libvpx_vp9_decoder = {
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.name = "libvpx-vp9",
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.long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_VP9,
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.priv_data_size = sizeof(VPxContext),
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.init = vp9_init,
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.close = vpx_free,
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.decode = vpx_decode,
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.capabilities = AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_DR1,
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.init_static_data = ff_vp9_init_static,
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.profiles = NULL_IF_CONFIG_SMALL(ff_vp9_profiles),
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.wrapper_name = "libvpx",
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};
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#endif /* CONFIG_LIBVPX_VP9_DECODER */
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