266 lines
8.6 KiB
C
266 lines
8.6 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 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 "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 VP8DecoderContext {
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struct vpx_codec_ctx decoder;
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} VP8Context;
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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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{
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VP8Context *ctx = avctx->priv_data;
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struct vpx_codec_dec_cfg deccfg = {
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/* token partitions+1 would be a decent choice */
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.threads = FFMIN(avctx->thread_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(&ctx->decoder, 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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{
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#if VPX_IMAGE_ABI_VERSION >= 3
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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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#endif
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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 = 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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#if VPX_IMAGE_ABI_VERSION >= 3
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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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#endif
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case VPX_IMG_FMT_I444:
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avctx->profile = FF_PROFILE_VP9_1;
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#if VPX_IMAGE_ABI_VERSION >= 3
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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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#else
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avctx->pix_fmt = AV_PIX_FMT_YUV444P;
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#endif
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return 0;
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#ifdef VPX_IMG_FMT_HIGHBITDEPTH
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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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#if VPX_IMAGE_ABI_VERSION >= 3
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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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#endif
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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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#if VPX_IMAGE_ABI_VERSION >= 3
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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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#else
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avctx->pix_fmt = AV_PIX_FMT_YUV444P10;
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#endif
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return 0;
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} else if (img->bit_depth == 12) {
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#if VPX_IMAGE_ABI_VERSION >= 3
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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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#else
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avctx->pix_fmt = AV_PIX_FMT_YUV444P12;
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#endif
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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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#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 vp8_decode(AVCodecContext *avctx,
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void *data, int *got_frame, AVPacket *avpkt)
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{
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VP8Context *ctx = avctx->priv_data;
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AVFrame *picture = data;
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const void *iter = NULL;
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struct vpx_image *img;
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int ret;
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if (vpx_codec_decode(&ctx->decoder, avpkt->data, avpkt->size, NULL, 0) !=
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VPX_CODEC_OK) {
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const char *error = vpx_codec_error(&ctx->decoder);
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const char *detail = vpx_codec_error_detail(&ctx->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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return AVERROR_INVALIDDATA;
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}
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if ((img = vpx_codec_get_frame(&ctx->decoder, &iter))) {
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if ((ret = set_pix_fmt(avctx, img)) < 0) {
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#ifdef VPX_IMG_FMT_HIGHBITDEPTH
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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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#else
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av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
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img->fmt, 8);
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#endif
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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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av_image_copy(picture->data, picture->linesize, (const uint8_t **)img->planes,
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img->stride, 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 vp8_free(AVCodecContext *avctx)
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{
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VP8Context *ctx = avctx->priv_data;
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vpx_codec_destroy(&ctx->decoder);
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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);
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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(VP8Context),
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.init = vp8_init,
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.close = vp8_free,
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.decode = vp8_decode,
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.capabilities = AV_CODEC_CAP_AUTO_THREADS | AV_CODEC_CAP_DR1,
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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);
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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(VP8Context),
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.init = vp9_init,
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.close = vp8_free,
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.decode = vp8_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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};
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#endif /* CONFIG_LIBVPX_VP9_DECODER */
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