mirror of https://git.ffmpeg.org/ffmpeg.git
633 lines
18 KiB
C
633 lines
18 KiB
C
/*
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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/fifo.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 "avcodec.h"
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#include "h264_parse.h"
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#include "hevc_parse.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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MediaCodecDecContext *ctx;
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AVFifoBuffer *fifo;
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AVPacket buffered_pkt;
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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_fifo_free(s->fifo);
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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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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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static int mpeg2_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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#if CONFIG_MPEG4_MEDIACODEC_DECODER
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static int mpeg4_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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#if CONFIG_VP8_MEDIACODEC_DECODER || CONFIG_VP9_MEDIACODEC_DECODER
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static int vpx_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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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 = mpeg2_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 = mpeg4_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 = vpx_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 = vpx_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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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, "MediaCodec started successfully, ret = %d\n", ret);
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s->fifo = av_fifo_alloc(sizeof(AVPacket));
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if (!s->fifo) {
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ret = AVERROR(ENOMEM);
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goto done;
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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_process_data(AVCodecContext *avctx, AVFrame *frame,
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int *got_frame, AVPacket *pkt)
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{
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MediaCodecH264DecContext *s = avctx->priv_data;
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return ff_mediacodec_dec_decode(avctx, s->ctx, frame, got_frame, pkt);
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}
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static int mediacodec_decode_frame(AVCodecContext *avctx, void *data,
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int *got_frame, AVPacket *avpkt)
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{
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MediaCodecH264DecContext *s = avctx->priv_data;
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AVFrame *frame = data;
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int ret;
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/* buffer the input packet */
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if (avpkt->size) {
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AVPacket input_pkt = { 0 };
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if (av_fifo_space(s->fifo) < sizeof(input_pkt)) {
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ret = av_fifo_realloc2(s->fifo,
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av_fifo_size(s->fifo) + sizeof(input_pkt));
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if (ret < 0)
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return ret;
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}
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ret = av_packet_ref(&input_pkt, avpkt);
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if (ret < 0)
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return ret;
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av_fifo_generic_write(s->fifo, &input_pkt, sizeof(input_pkt), NULL);
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}
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/*
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* MediaCodec.flush() discards both input and output buffers, thus we
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* need to delay the call to this function until the user has released or
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* renderered the frames he retains.
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*
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* After we have buffered an input packet, check if the codec is in the
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* flushing state. If it is, we need to call ff_mediacodec_dec_flush.
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*
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* ff_mediacodec_dec_flush returns 0 if the flush cannot be performed on
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* the codec (because the user retains frames). The codec stays in the
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* flushing state.
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*
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* ff_mediacodec_dec_flush returns 1 if the flush can actually be
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* performed on the codec. The codec leaves the flushing state and can
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* process again packets.
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*
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* ff_mediacodec_dec_flush returns a negative value if an error has
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* occurred.
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*
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*/
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if (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 avpkt->size;
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}
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}
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/* process buffered data */
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while (!*got_frame) {
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/* prepare the input data */
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if (s->buffered_pkt.size <= 0) {
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av_packet_unref(&s->buffered_pkt);
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/* no more data */
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if (av_fifo_size(s->fifo) < sizeof(AVPacket)) {
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return avpkt->size ? avpkt->size :
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ff_mediacodec_dec_decode(avctx, s->ctx, frame, got_frame, avpkt);
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}
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av_fifo_generic_read(s->fifo, &s->buffered_pkt, sizeof(s->buffered_pkt), NULL);
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}
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ret = mediacodec_process_data(avctx, frame, got_frame, &s->buffered_pkt);
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if (ret < 0)
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return ret;
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s->buffered_pkt.size -= ret;
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s->buffered_pkt.data += ret;
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}
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return avpkt->size;
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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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while (av_fifo_size(s->fifo)) {
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AVPacket pkt;
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av_fifo_generic_read(s->fifo, &pkt, sizeof(pkt), NULL);
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av_packet_unref(&pkt);
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}
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av_fifo_reset(s->fifo);
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av_packet_unref(&s->buffered_pkt);
|
|
|
|
ff_mediacodec_dec_flush(avctx, s->ctx);
|
|
}
|
|
|
|
static const AVCodecHWConfigInternal *mediacodec_hw_configs[] = {
|
|
&(const AVCodecHWConfigInternal) {
|
|
.public = {
|
|
.pix_fmt = AV_PIX_FMT_MEDIACODEC,
|
|
.methods = AV_CODEC_HW_CONFIG_METHOD_AD_HOC,
|
|
.device_type = AV_HWDEVICE_TYPE_NONE,
|
|
},
|
|
.hwaccel = NULL,
|
|
},
|
|
NULL
|
|
};
|
|
|
|
#if CONFIG_H264_MEDIACODEC_DECODER
|
|
AVCodec ff_h264_mediacodec_decoder = {
|
|
.name = "h264_mediacodec",
|
|
.long_name = NULL_IF_CONFIG_SMALL("H.264 Android MediaCodec decoder"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_H264,
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext),
|
|
.init = mediacodec_decode_init,
|
|
.decode = mediacodec_decode_frame,
|
|
.flush = mediacodec_decode_flush,
|
|
.close = mediacodec_decode_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS,
|
|
.bsfs = "h264_mp4toannexb",
|
|
.hw_configs = mediacodec_hw_configs,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_HEVC_MEDIACODEC_DECODER
|
|
AVCodec ff_hevc_mediacodec_decoder = {
|
|
.name = "hevc_mediacodec",
|
|
.long_name = NULL_IF_CONFIG_SMALL("H.265 Android MediaCodec decoder"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_HEVC,
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext),
|
|
.init = mediacodec_decode_init,
|
|
.decode = mediacodec_decode_frame,
|
|
.flush = mediacodec_decode_flush,
|
|
.close = mediacodec_decode_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS,
|
|
.bsfs = "hevc_mp4toannexb",
|
|
.hw_configs = mediacodec_hw_configs,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_MPEG2_MEDIACODEC_DECODER
|
|
AVCodec ff_mpeg2_mediacodec_decoder = {
|
|
.name = "mpeg2_mediacodec",
|
|
.long_name = NULL_IF_CONFIG_SMALL("MPEG-2 Android MediaCodec decoder"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_MPEG2VIDEO,
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext),
|
|
.init = mediacodec_decode_init,
|
|
.decode = mediacodec_decode_frame,
|
|
.flush = mediacodec_decode_flush,
|
|
.close = mediacodec_decode_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS,
|
|
.hw_configs = mediacodec_hw_configs,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_MPEG4_MEDIACODEC_DECODER
|
|
AVCodec ff_mpeg4_mediacodec_decoder = {
|
|
.name = "mpeg4_mediacodec",
|
|
.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 Android MediaCodec decoder"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_MPEG4,
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext),
|
|
.init = mediacodec_decode_init,
|
|
.decode = mediacodec_decode_frame,
|
|
.flush = mediacodec_decode_flush,
|
|
.close = mediacodec_decode_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS,
|
|
.hw_configs = mediacodec_hw_configs,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_VP8_MEDIACODEC_DECODER
|
|
AVCodec ff_vp8_mediacodec_decoder = {
|
|
.name = "vp8_mediacodec",
|
|
.long_name = NULL_IF_CONFIG_SMALL("VP8 Android MediaCodec decoder"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_VP8,
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext),
|
|
.init = mediacodec_decode_init,
|
|
.decode = mediacodec_decode_frame,
|
|
.flush = mediacodec_decode_flush,
|
|
.close = mediacodec_decode_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS,
|
|
.hw_configs = mediacodec_hw_configs,
|
|
};
|
|
#endif
|
|
|
|
#if CONFIG_VP9_MEDIACODEC_DECODER
|
|
AVCodec ff_vp9_mediacodec_decoder = {
|
|
.name = "vp9_mediacodec",
|
|
.long_name = NULL_IF_CONFIG_SMALL("VP9 Android MediaCodec decoder"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_VP9,
|
|
.priv_data_size = sizeof(MediaCodecH264DecContext),
|
|
.init = mediacodec_decode_init,
|
|
.decode = mediacodec_decode_frame,
|
|
.flush = mediacodec_decode_flush,
|
|
.close = mediacodec_decode_close,
|
|
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AVOID_PROBING,
|
|
.caps_internal = FF_CODEC_CAP_SETS_PKT_DTS,
|
|
.hw_configs = mediacodec_hw_configs,
|
|
};
|
|
#endif
|