561 lines
17 KiB
C
Executable File
561 lines
17 KiB
C
Executable File
/*
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* Android MediaCodec MPEG-2 / H.264 / H.265 / MPEG-4 / VP8 / VP9 decoders
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*
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* Copyright (c) 2015-2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
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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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#include <stdint.h>
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#include <string.h>
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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "libavutil/opt.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/pixfmt.h"
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#include "libavutil/internal.h"
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#include "avcodec.h"
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#include "decode.h"
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#include "h264_parse.h"
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#include "hevc_parse.h"
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#include "hwconfig.h"
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#include "internal.h"
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#include "mediacodec_wrapper.h"
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#include "mediacodecdec_common.h"
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typedef struct MediaCodecH264DecContext {
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AVClass *avclass;
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MediaCodecDecContext *ctx;
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AVPacket buffered_pkt;
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int delay_flush;
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int amlogic_mpeg2_api23_workaround;
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} MediaCodecH264DecContext;
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static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
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{
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MediaCodecH264DecContext *s = avctx->priv_data;
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ff_mediacodec_dec_close(avctx, s->ctx);
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s->ctx = NULL;
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av_packet_unref(&s->buffered_pkt);
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return 0;
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}
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#if CONFIG_H264_MEDIACODEC_DECODER || CONFIG_HEVC_MEDIACODEC_DECODER
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static int h2645_ps_to_nalu(const uint8_t *src, int src_size, uint8_t **out, int *out_size)
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{
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int i;
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int ret = 0;
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uint8_t *p = NULL;
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static const uint8_t nalu_header[] = { 0x00, 0x00, 0x00, 0x01 };
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if (!out || !out_size) {
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return AVERROR(EINVAL);
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}
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p = av_malloc(sizeof(nalu_header) + src_size);
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if (!p) {
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return AVERROR(ENOMEM);
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}
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*out = p;
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*out_size = sizeof(nalu_header) + src_size;
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memcpy(p, nalu_header, sizeof(nalu_header));
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memcpy(p + sizeof(nalu_header), src, src_size);
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/* Escape 0x00, 0x00, 0x0{0-3} pattern */
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for (i = 4; i < *out_size; i++) {
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if (i < *out_size - 3 &&
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p[i + 0] == 0 &&
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p[i + 1] == 0 &&
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p[i + 2] <= 3) {
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uint8_t *new;
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*out_size += 1;
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new = av_realloc(*out, *out_size);
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if (!new) {
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ret = AVERROR(ENOMEM);
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goto done;
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}
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*out = p = new;
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i = i + 2;
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memmove(p + i + 1, p + i, *out_size - (i + 1));
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p[i] = 0x03;
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}
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}
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done:
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if (ret < 0) {
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av_freep(out);
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*out_size = 0;
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}
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return ret;
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}
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#endif
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#if CONFIG_H264_MEDIACODEC_DECODER
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static int h264_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
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{
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int i;
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int ret;
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H264ParamSets ps;
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const PPS *pps = NULL;
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const SPS *sps = NULL;
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int is_avc = 0;
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int nal_length_size = 0;
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memset(&ps, 0, sizeof(ps));
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ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
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&ps, &is_avc, &nal_length_size, 0, avctx);
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if (ret < 0) {
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goto done;
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}
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for (i = 0; i < MAX_PPS_COUNT; i++) {
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if (ps.pps_list[i]) {
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pps = (const PPS*)ps.pps_list[i]->data;
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break;
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}
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}
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if (pps) {
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if (ps.sps_list[pps->sps_id]) {
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sps = (const SPS*)ps.sps_list[pps->sps_id]->data;
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}
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}
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if (pps && sps) {
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uint8_t *data = NULL;
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int data_size = 0;
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if ((ret = h2645_ps_to_nalu(sps->data, sps->data_size, &data, &data_size)) < 0) {
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goto done;
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}
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ff_AMediaFormat_setBuffer(format, "csd-0", (void*)data, data_size);
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av_freep(&data);
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if ((ret = h2645_ps_to_nalu(pps->data, pps->data_size, &data, &data_size)) < 0) {
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goto done;
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}
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ff_AMediaFormat_setBuffer(format, "csd-1", (void*)data, data_size);
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av_freep(&data);
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} else {
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av_log(avctx, AV_LOG_ERROR, "Could not extract PPS/SPS from extradata");
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ret = AVERROR_INVALIDDATA;
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}
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done:
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ff_h264_ps_uninit(&ps);
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return ret;
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}
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#endif
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#if CONFIG_HEVC_MEDIACODEC_DECODER
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static int hevc_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
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{
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int i;
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int ret;
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HEVCParamSets ps;
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HEVCSEI sei;
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const HEVCVPS *vps = NULL;
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const HEVCPPS *pps = NULL;
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const HEVCSPS *sps = NULL;
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int is_nalff = 0;
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int nal_length_size = 0;
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uint8_t *vps_data = NULL;
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uint8_t *sps_data = NULL;
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uint8_t *pps_data = NULL;
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int vps_data_size = 0;
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int sps_data_size = 0;
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int pps_data_size = 0;
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memset(&ps, 0, sizeof(ps));
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memset(&sei, 0, sizeof(sei));
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ret = ff_hevc_decode_extradata(avctx->extradata, avctx->extradata_size,
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&ps, &sei, &is_nalff, &nal_length_size, 0, 1, avctx);
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if (ret < 0) {
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goto done;
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}
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for (i = 0; i < HEVC_MAX_VPS_COUNT; i++) {
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if (ps.vps_list[i]) {
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vps = (const HEVCVPS*)ps.vps_list[i]->data;
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break;
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}
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}
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for (i = 0; i < HEVC_MAX_PPS_COUNT; i++) {
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if (ps.pps_list[i]) {
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pps = (const HEVCPPS*)ps.pps_list[i]->data;
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break;
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}
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}
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if (pps) {
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if (ps.sps_list[pps->sps_id]) {
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sps = (const HEVCSPS*)ps.sps_list[pps->sps_id]->data;
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}
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}
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if (vps && pps && sps) {
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uint8_t *data;
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int data_size;
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if ((ret = h2645_ps_to_nalu(vps->data, vps->data_size, &vps_data, &vps_data_size)) < 0 ||
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(ret = h2645_ps_to_nalu(sps->data, sps->data_size, &sps_data, &sps_data_size)) < 0 ||
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(ret = h2645_ps_to_nalu(pps->data, pps->data_size, &pps_data, &pps_data_size)) < 0) {
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goto done;
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}
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data_size = vps_data_size + sps_data_size + pps_data_size;
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data = av_mallocz(data_size);
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if (!data) {
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ret = AVERROR(ENOMEM);
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goto done;
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}
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memcpy(data , vps_data, vps_data_size);
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memcpy(data + vps_data_size , sps_data, sps_data_size);
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memcpy(data + vps_data_size + sps_data_size, pps_data, pps_data_size);
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ff_AMediaFormat_setBuffer(format, "csd-0", data, data_size);
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av_freep(&data);
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} else {
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av_log(avctx, AV_LOG_ERROR, "Could not extract VPS/PPS/SPS from extradata");
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ret = AVERROR_INVALIDDATA;
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}
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done:
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ff_hevc_ps_uninit(&ps);
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av_freep(&vps_data);
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av_freep(&sps_data);
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av_freep(&pps_data);
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return ret;
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}
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#endif
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#if CONFIG_MPEG2_MEDIACODEC_DECODER || \
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CONFIG_MPEG4_MEDIACODEC_DECODER || \
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CONFIG_VP8_MEDIACODEC_DECODER || \
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CONFIG_VP9_MEDIACODEC_DECODER
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static int common_set_extradata(AVCodecContext *avctx, FFAMediaFormat *format)
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{
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int ret = 0;
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if (avctx->extradata) {
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ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size);
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}
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return ret;
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}
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#endif
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static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
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{
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int ret;
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int sdk_int;
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const char *codec_mime = NULL;
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FFAMediaFormat *format = NULL;
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MediaCodecH264DecContext *s = avctx->priv_data;
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format = ff_AMediaFormat_new();
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if (!format) {
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av_log(avctx, AV_LOG_ERROR, "Failed to create media format\n");
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ret = AVERROR_EXTERNAL;
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goto done;
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}
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switch (avctx->codec_id) {
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#if CONFIG_H264_MEDIACODEC_DECODER
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case AV_CODEC_ID_H264:
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codec_mime = "video/avc";
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ret = h264_set_extradata(avctx, format);
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if (ret < 0)
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goto done;
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break;
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#endif
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#if CONFIG_HEVC_MEDIACODEC_DECODER
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case AV_CODEC_ID_HEVC:
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codec_mime = "video/hevc";
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ret = hevc_set_extradata(avctx, format);
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if (ret < 0)
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goto done;
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break;
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#endif
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#if CONFIG_MPEG2_MEDIACODEC_DECODER
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case AV_CODEC_ID_MPEG2VIDEO:
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codec_mime = "video/mpeg2";
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ret = common_set_extradata(avctx, format);
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if (ret < 0)
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goto done;
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break;
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#endif
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#if CONFIG_MPEG4_MEDIACODEC_DECODER
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case AV_CODEC_ID_MPEG4:
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codec_mime = "video/mp4v-es",
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ret = common_set_extradata(avctx, format);
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if (ret < 0)
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goto done;
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break;
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#endif
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#if CONFIG_VP8_MEDIACODEC_DECODER
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case AV_CODEC_ID_VP8:
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codec_mime = "video/x-vnd.on2.vp8";
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ret = common_set_extradata(avctx, format);
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if (ret < 0)
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goto done;
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break;
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#endif
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#if CONFIG_VP9_MEDIACODEC_DECODER
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case AV_CODEC_ID_VP9:
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codec_mime = "video/x-vnd.on2.vp9";
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ret = common_set_extradata(avctx, format);
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if (ret < 0)
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goto done;
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break;
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#endif
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default:
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av_assert0(0);
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}
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ff_AMediaFormat_setString(format, "mime", codec_mime);
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ff_AMediaFormat_setInt32(format, "width", avctx->width);
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ff_AMediaFormat_setInt32(format, "height", avctx->height);
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s->ctx = av_mallocz(sizeof(*s->ctx));
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if (!s->ctx) {
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av_log(avctx, AV_LOG_ERROR, "Failed to allocate MediaCodecDecContext\n");
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ret = AVERROR(ENOMEM);
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goto done;
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}
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s->ctx->delay_flush = s->delay_flush;
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if ((ret = ff_mediacodec_dec_init(avctx, s->ctx, codec_mime, format)) < 0) {
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s->ctx = NULL;
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goto done;
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}
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av_log(avctx, AV_LOG_INFO,
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"MediaCodec started successfully: codec = %s, ret = %d\n",
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s->ctx->codec_name, ret);
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sdk_int = ff_Build_SDK_INT(avctx);
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if (sdk_int <= 23 &&
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strcmp(s->ctx->codec_name, "OMX.amlogic.mpeg2.decoder.awesome") == 0) {
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av_log(avctx, AV_LOG_INFO, "Enabling workaround for %s on API=%d\n",
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s->ctx->codec_name, sdk_int);
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s->amlogic_mpeg2_api23_workaround = 1;
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}
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done:
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if (format) {
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ff_AMediaFormat_delete(format);
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}
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if (ret < 0) {
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mediacodec_decode_close(avctx);
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}
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return ret;
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}
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static int mediacodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
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{
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MediaCodecH264DecContext *s = avctx->priv_data;
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int ret;
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ssize_t index;
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/* In delay_flush mode, wait until the user has released or rendered
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all retained frames. */
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if (s->delay_flush && ff_mediacodec_dec_is_flushing(avctx, s->ctx)) {
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if (!ff_mediacodec_dec_flush(avctx, s->ctx)) {
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return AVERROR(EAGAIN);
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}
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}
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/* poll for new frame */
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ret = ff_mediacodec_dec_receive(avctx, s->ctx, frame, false);
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if (ret != AVERROR(EAGAIN))
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return ret;
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/* feed decoder */
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while (1) {
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if (s->ctx->current_input_buffer < 0) {
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/* poll for input space */
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index = ff_AMediaCodec_dequeueInputBuffer(s->ctx->codec, 0);
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if (index < 0) {
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/* no space, block for an output frame to appear */
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return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
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}
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s->ctx->current_input_buffer = index;
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}
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/* try to flush any buffered packet data */
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if (s->buffered_pkt.size > 0) {
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ret = ff_mediacodec_dec_send(avctx, s->ctx, &s->buffered_pkt, false);
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if (ret >= 0) {
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s->buffered_pkt.size -= ret;
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s->buffered_pkt.data += ret;
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if (s->buffered_pkt.size <= 0) {
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av_packet_unref(&s->buffered_pkt);
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} else {
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av_log(avctx, AV_LOG_WARNING,
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"could not send entire packet in single input buffer (%d < %d)\n",
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ret, s->buffered_pkt.size+ret);
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}
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} else if (ret < 0 && ret != AVERROR(EAGAIN)) {
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return ret;
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}
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if (s->amlogic_mpeg2_api23_workaround && s->buffered_pkt.size <= 0) {
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/* fallthrough to fetch next packet regardless of input buffer space */
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} else {
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/* poll for space again */
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continue;
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}
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}
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/* fetch new packet or eof */
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ret = ff_decode_get_packet(avctx, &s->buffered_pkt);
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if (ret == AVERROR_EOF) {
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AVPacket null_pkt = { 0 };
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ret = ff_mediacodec_dec_send(avctx, s->ctx, &null_pkt, true);
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if (ret < 0)
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return ret;
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return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
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} else if (ret == AVERROR(EAGAIN) && s->ctx->current_input_buffer < 0) {
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return ff_mediacodec_dec_receive(avctx, s->ctx, frame, true);
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} else if (ret < 0) {
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return ret;
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}
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}
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return AVERROR(EAGAIN);
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}
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static void mediacodec_decode_flush(AVCodecContext *avctx)
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{
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MediaCodecH264DecContext *s = avctx->priv_data;
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av_packet_unref(&s->buffered_pkt);
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ff_mediacodec_dec_flush(avctx, s->ctx);
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}
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static const AVCodecHWConfigInternal *mediacodec_hw_configs[] = {
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&(const AVCodecHWConfigInternal) {
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.public = {
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.pix_fmt = AV_PIX_FMT_MEDIACODEC,
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.methods = AV_CODEC_HW_CONFIG_METHOD_AD_HOC |
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AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX,
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.device_type = AV_HWDEVICE_TYPE_MEDIACODEC,
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},
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.hwaccel = NULL,
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},
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NULL
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};
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#define OFFSET(x) offsetof(MediaCodecH264DecContext, x)
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#define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
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static const AVOption ff_mediacodec_vdec_options[] = {
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{ "delay_flush", "Delay flush until hw output buffers are returned to the decoder",
|
|
OFFSET(delay_flush), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, VD },
|
|
{ NULL }
|
|
};
|
|
|
|
#define DECLARE_MEDIACODEC_VCLASS(short_name) \
|
|
static const AVClass ff_##short_name##_mediacodec_dec_class = { \
|
|
.class_name = #short_name "_mediacodec", \
|
|
.item_name = av_default_item_name, \
|
|
.option = ff_mediacodec_vdec_options, \
|
|
.version = LIBAVUTIL_VERSION_INT, \
|
|
};
|
|
|
|
#define DECLARE_MEDIACODEC_VDEC(short_name, full_name, codec_id, bsf) \
|
|
DECLARE_MEDIACODEC_VCLASS(short_name) \
|
|
AVCodec ff_##short_name##_mediacodec_decoder = { \
|
|
.name = #short_name "_mediacodec", \
|
|
.long_name = NULL_IF_CONFIG_SMALL(full_name " Android MediaCodec decoder"), \
|
|
.type = AVMEDIA_TYPE_VIDEO, \
|
|
.id = codec_id, \
|
|
.priv_class = &ff_##short_name##_mediacodec_dec_class, \
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext), \
|
|
.init = mediacodec_decode_init, \
|
|
.receive_frame = mediacodec_receive_frame, \
|
|
.flush = mediacodec_decode_flush, \
|
|
.close = mediacodec_decode_close, \
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING | AV_CODEC_CAP_HARDWARE, \
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS, \
|
|
.bsfs = bsf, \
|
|
.hw_configs = mediacodec_hw_configs, \
|
|
.wrapper_name = "mediacodec", \
|
|
}; \
|
|
|
|
#if CONFIG_H264_MEDIACODEC_DECODER
|
|
DECLARE_MEDIACODEC_VDEC(h264, "H.264", AV_CODEC_ID_H264, "h264_mp4toannexb")
|
|
#endif
|
|
|
|
#if CONFIG_HEVC_MEDIACODEC_DECODER
|
|
DECLARE_MEDIACODEC_VDEC(hevc, "H.265", AV_CODEC_ID_HEVC, "hevc_mp4toannexb")
|
|
#endif
|
|
|
|
#if CONFIG_MPEG2_MEDIACODEC_DECODER
|
|
DECLARE_MEDIACODEC_VDEC(mpeg2, "MPEG-2", AV_CODEC_ID_MPEG2VIDEO, NULL)
|
|
#endif
|
|
|
|
#if CONFIG_MPEG4_MEDIACODEC_DECODER
|
|
DECLARE_MEDIACODEC_VDEC(mpeg4, "MPEG-4", AV_CODEC_ID_MPEG4, NULL)
|
|
#endif
|
|
|
|
#if CONFIG_VP8_MEDIACODEC_DECODER
|
|
DECLARE_MEDIACODEC_VDEC(vp8, "VP8", AV_CODEC_ID_VP8, NULL)
|
|
#endif
|
|
|
|
#if CONFIG_VP9_MEDIACODEC_DECODER
|
|
DECLARE_MEDIACODEC_VDEC(vp9, "VP9", AV_CODEC_ID_VP9, NULL)
|
|
#endif
|