mirror of https://git.ffmpeg.org/ffmpeg.git
526 lines
17 KiB
C
526 lines
17 KiB
C
/*
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* Android MediaCodec encoders
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*
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* Copyright (c) 2022 Zhao Zhili <zhilizhao@tencent.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 "config_components.h"
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#include "libavutil/avassert.h"
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#include "libavutil/hwcontext_mediacodec.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/opt.h"
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#include "avcodec.h"
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#include "codec_internal.h"
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#include "encode.h"
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#include "hwconfig.h"
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#include "jni.h"
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#include "mediacodec.h"
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#include "mediacodec_wrapper.h"
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#include "mediacodecdec_common.h"
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#define INPUT_DEQUEUE_TIMEOUT_US 8000
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#define OUTPUT_DEQUEUE_TIMEOUT_US 8000
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typedef struct MediaCodecEncContext {
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AVClass *avclass;
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FFAMediaCodec *codec;
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int use_ndk_codec;
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const char *name;
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FFANativeWindow *window;
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int fps;
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int width;
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int height;
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uint8_t *extradata;
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int extradata_size;
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// Since MediaCodec doesn't output DTS, use a timestamp queue to save pts
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// of AVFrame and generate DTS for AVPacket.
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//
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// This doesn't work when use Surface as input, in that case frames can be
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// sent to encoder without our notice. One exception is frames come from
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// our MediaCodec decoder wrapper, since we can control it's render by
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// av_mediacodec_release_buffer.
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int64_t timestamps[32];
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int ts_head;
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int ts_tail;
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int eof_sent;
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AVFrame *frame;
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} MediaCodecEncContext;
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enum {
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COLOR_FormatYUV420Planar = 0x13,
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COLOR_FormatYUV420SemiPlanar = 0x15,
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COLOR_FormatSurface = 0x7F000789,
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};
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static const struct {
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int color_format;
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enum AVPixelFormat pix_fmt;
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} color_formats[] = {
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{ COLOR_FormatYUV420Planar, AV_PIX_FMT_YUV420P },
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{ COLOR_FormatYUV420SemiPlanar, AV_PIX_FMT_NV12 },
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{ COLOR_FormatSurface, AV_PIX_FMT_MEDIACODEC },
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};
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static const enum AVPixelFormat avc_pix_fmts[] = {
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AV_PIX_FMT_MEDIACODEC,
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_NONE
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};
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static void mediacodec_output_format(AVCodecContext *avctx)
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{
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MediaCodecEncContext *s = avctx->priv_data;
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char *name = ff_AMediaCodec_getName(s->codec);
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FFAMediaFormat *out_format = ff_AMediaCodec_getOutputFormat(s->codec);
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char *str = ff_AMediaFormat_toString(out_format);
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av_log(avctx, AV_LOG_DEBUG, "MediaCodec encoder %s output format %s\n",
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name ? name : "unknown", str);
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av_free(name);
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av_free(str);
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ff_AMediaFormat_delete(out_format);
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}
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static av_cold int mediacodec_init(AVCodecContext *avctx)
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{
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const char *codec_mime = NULL;
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MediaCodecEncContext *s = avctx->priv_data;
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FFAMediaFormat *format = NULL;
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int ret;
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int gop;
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if (s->use_ndk_codec < 0)
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s->use_ndk_codec = !av_jni_get_java_vm(avctx);
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switch (avctx->codec_id) {
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case AV_CODEC_ID_H264:
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codec_mime = "video/avc";
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break;
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case AV_CODEC_ID_HEVC:
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codec_mime = "video/hevc";
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break;
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default:
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av_assert0(0);
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}
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if (s->name)
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s->codec = ff_AMediaCodec_createCodecByName(s->name, s->use_ndk_codec);
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else
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s->codec = ff_AMediaCodec_createEncoderByType(codec_mime, s->use_ndk_codec);
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if (!s->codec) {
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av_log(avctx, AV_LOG_ERROR, "Failed to create encoder for type %s\n",
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codec_mime);
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return AVERROR_EXTERNAL;
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}
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format = ff_AMediaFormat_new(s->use_ndk_codec);
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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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return AVERROR_EXTERNAL;
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}
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ff_AMediaFormat_setString(format, "mime", codec_mime);
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s->width = FFALIGN(avctx->width, 16);
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s->height = avctx->height;
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ff_AMediaFormat_setInt32(format, "width", s->width);
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ff_AMediaFormat_setInt32(format, "height", s->height);
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if (avctx->pix_fmt == AV_PIX_FMT_MEDIACODEC) {
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AVMediaCodecContext *user_ctx = avctx->hwaccel_context;
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if (avctx->hw_device_ctx) {
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AVHWDeviceContext *device_ctx = (AVHWDeviceContext*)(avctx->hw_device_ctx->data);
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AVMediaCodecDeviceContext *dev_ctx;
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if (device_ctx->type != AV_HWDEVICE_TYPE_MEDIACODEC || !device_ctx->hwctx) {
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ret = AVERROR(EINVAL);
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goto bailout;
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}
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dev_ctx = device_ctx->hwctx;
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s->window = ff_mediacodec_surface_ref(dev_ctx->surface, dev_ctx->native_window, avctx);
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}
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if (!s->window && user_ctx && user_ctx->surface)
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s->window = ff_mediacodec_surface_ref(user_ctx->surface, NULL, avctx);
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if (!s->window) {
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ret = AVERROR(EINVAL);
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av_log(avctx, AV_LOG_ERROR, "Missing hw_device_ctx or hwaccel_context for AV_PIX_FMT_MEDIACODEC\n");
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goto bailout;
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}
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/* Although there is a method ANativeWindow_toSurface() introduced in
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* API level 26, it's easier and safe to always require a Surface for
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* Java MediaCodec.
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*/
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if (!s->use_ndk_codec && !s->window->surface) {
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ret = AVERROR(EINVAL);
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av_log(avctx, AV_LOG_ERROR, "Missing jobject Surface for AV_PIX_FMT_MEDIACODEC. "
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"Please note that Java MediaCodec doesn't work with ANativeWindow.\n");
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goto bailout;
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}
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}
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for (int i = 0; i < FF_ARRAY_ELEMS(color_formats); i++) {
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if (avctx->pix_fmt == color_formats[i].pix_fmt) {
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ff_AMediaFormat_setInt32(format, "color-format",
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color_formats[i].color_format);
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break;
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}
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}
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if (avctx->bit_rate)
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ff_AMediaFormat_setInt32(format, "bitrate", avctx->bit_rate);
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// frame-rate and i-frame-interval are required to configure codec
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if (avctx->framerate.num >= avctx->framerate.den && avctx->framerate.den > 0) {
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s->fps = avctx->framerate.num / avctx->framerate.den;
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} else {
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s->fps = 30;
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av_log(avctx, AV_LOG_INFO, "Use %d as the default MediaFormat frame-rate\n", s->fps);
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}
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gop = round(avctx->gop_size / s->fps);
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if (gop == 0) {
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gop = 1;
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av_log(avctx, AV_LOG_INFO,
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"Use %d as the default MediaFormat i-frame-interval, "
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"please set gop_size properly (>= fps)\n", gop);
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} else {
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av_log(avctx, AV_LOG_DEBUG, "Set i-frame-interval to %d\n", gop);
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}
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ff_AMediaFormat_setInt32(format, "frame-rate", s->fps);
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ff_AMediaFormat_setInt32(format, "i-frame-interval", gop);
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ret = ff_AMediaCodecProfile_getProfileFromAVCodecContext(avctx);
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if (ret > 0) {
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av_log(avctx, AV_LOG_DEBUG, "set profile to 0x%x\n", ret);
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ff_AMediaFormat_setInt32(format, "profile", ret);
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}
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ret = ff_AMediaCodec_getConfigureFlagEncode(s->codec);
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ret = ff_AMediaCodec_configure(s->codec, format, s->window, NULL, ret);
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if (ret) {
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av_log(avctx, AV_LOG_ERROR, "MediaCodec configure failed, %s\n", av_err2str(ret));
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goto bailout;
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}
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ret = ff_AMediaCodec_start(s->codec);
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if (ret) {
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av_log(avctx, AV_LOG_ERROR, "MediaCodec failed to start, %s\n", av_err2str(ret));
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goto bailout;
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}
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mediacodec_output_format(avctx);
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s->frame = av_frame_alloc();
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if (!s->frame)
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ret = AVERROR(ENOMEM);
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bailout:
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if (format)
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ff_AMediaFormat_delete(format);
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return ret;
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}
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static int mediacodec_receive(AVCodecContext *avctx,
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AVPacket *pkt,
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int *got_packet)
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{
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MediaCodecEncContext *s = avctx->priv_data;
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FFAMediaCodec *codec = s->codec;
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FFAMediaCodecBufferInfo out_info = {0};
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uint8_t *out_buf;
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size_t out_size = 0;
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int ret;
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int extradata_size = 0;
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int64_t timeout_us = s->eof_sent ? OUTPUT_DEQUEUE_TIMEOUT_US : 0;
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ssize_t index = ff_AMediaCodec_dequeueOutputBuffer(codec, &out_info, timeout_us);
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if (ff_AMediaCodec_infoTryAgainLater(codec, index))
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return AVERROR(EAGAIN);
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if (ff_AMediaCodec_infoOutputFormatChanged(codec, index)) {
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mediacodec_output_format(avctx);
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return AVERROR(EAGAIN);
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}
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if (ff_AMediaCodec_infoOutputBuffersChanged(codec, index)) {
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ff_AMediaCodec_cleanOutputBuffers(codec);
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return AVERROR(EAGAIN);
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}
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if (index < 0)
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return AVERROR_EXTERNAL;
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if (out_info.flags & ff_AMediaCodec_getBufferFlagEndOfStream(codec))
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return AVERROR_EOF;
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out_buf = ff_AMediaCodec_getOutputBuffer(codec, index, &out_size);
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if (!out_buf) {
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ret = AVERROR_EXTERNAL;
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goto bailout;
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}
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if (out_info.flags & ff_AMediaCodec_getBufferFlagCodecConfig(codec)) {
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ret = av_reallocp(&s->extradata, out_info.size);
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if (ret)
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goto bailout;
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s->extradata_size = out_info.size;
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memcpy(s->extradata, out_buf + out_info.offset, out_info.size);
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ff_AMediaCodec_releaseOutputBuffer(codec, index, false);
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// try immediately
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return mediacodec_receive(avctx, pkt, got_packet);
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}
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ret = ff_get_encode_buffer(avctx, pkt, out_info.size + s->extradata_size, 0);
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if (ret < 0)
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goto bailout;
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if (s->extradata_size) {
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extradata_size = s->extradata_size;
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s->extradata_size = 0;
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memcpy(pkt->data, s->extradata, extradata_size);
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}
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memcpy(pkt->data + extradata_size, out_buf + out_info.offset, out_info.size);
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pkt->pts = av_rescale_q(out_info.presentationTimeUs, AV_TIME_BASE_Q, avctx->time_base);
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if (s->ts_tail != s->ts_head) {
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pkt->dts = s->timestamps[s->ts_tail];
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s->ts_tail = (s->ts_tail + 1) % FF_ARRAY_ELEMS(s->timestamps);
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}
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if (out_info.flags & ff_AMediaCodec_getBufferFlagKeyFrame(codec))
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pkt->flags |= AV_PKT_FLAG_KEY;
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ret = 0;
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*got_packet = 1;
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av_log(avctx, AV_LOG_TRACE, "receive packet pts %" PRId64 " dts %" PRId64
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" flags %d extradata %d\n",
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pkt->pts, pkt->dts, pkt->flags, extradata_size);
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bailout:
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ff_AMediaCodec_releaseOutputBuffer(codec, index, false);
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return ret;
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}
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static void copy_frame_to_buffer(AVCodecContext *avctx, const AVFrame *frame, uint8_t *dst, size_t size)
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{
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MediaCodecEncContext *s = avctx->priv_data;
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uint8_t *dst_data[4] = {};
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int dst_linesize[4] = {};
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const uint8_t *src_data[4] = {
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frame->data[0], frame->data[1], frame->data[2], frame->data[3]
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};
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if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
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dst_data[0] = dst;
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dst_data[1] = dst + s->width * s->height;
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dst_data[2] = dst_data[1] + s->width * s->height / 4;
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dst_linesize[0] = s->width;
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dst_linesize[1] = dst_linesize[2] = s->width / 2;
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} else if (avctx->pix_fmt == AV_PIX_FMT_NV12) {
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dst_data[0] = dst;
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dst_data[1] = dst + s->width * s->height;
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dst_linesize[0] = s->width;
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dst_linesize[1] = s->width;
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} else {
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av_assert0(0);
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}
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av_image_copy(dst_data, dst_linesize, src_data, frame->linesize,
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avctx->pix_fmt, avctx->width, avctx->height);
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}
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static int mediacodec_send(AVCodecContext *avctx,
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const AVFrame *frame) {
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MediaCodecEncContext *s = avctx->priv_data;
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FFAMediaCodec *codec = s->codec;
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ssize_t index;
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uint8_t *input_buf = NULL;
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size_t input_size = 0;
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int64_t pts = 0;
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uint32_t flags = 0;
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int64_t timeout_us;
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if (s->eof_sent)
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return 0;
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if (s->window) {
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if (!frame) {
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s->eof_sent = 1;
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return ff_AMediaCodec_signalEndOfInputStream(codec);
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}
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if (frame->data[3]) {
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pts = av_rescale_q(frame->pts, avctx->time_base, AV_TIME_BASE_Q);
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s->timestamps[s->ts_head] = frame->pts;
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s->ts_head = (s->ts_head + 1) % FF_ARRAY_ELEMS(s->timestamps);
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av_mediacodec_release_buffer((AVMediaCodecBuffer *)frame->data[3], 1);
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}
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return 0;
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}
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timeout_us = INPUT_DEQUEUE_TIMEOUT_US;
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index = ff_AMediaCodec_dequeueInputBuffer(codec, timeout_us);
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if (ff_AMediaCodec_infoTryAgainLater(codec, index))
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return AVERROR(EAGAIN);
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if (index < 0) {
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av_log(avctx, AV_LOG_ERROR, "dequeue input buffer failed, %zd", index);
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return AVERROR_EXTERNAL;
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}
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if (frame) {
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input_buf = ff_AMediaCodec_getInputBuffer(codec, index, &input_size);
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copy_frame_to_buffer(avctx, frame, input_buf, input_size);
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pts = av_rescale_q(frame->pts, avctx->time_base, AV_TIME_BASE_Q);
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s->timestamps[s->ts_head] = frame->pts;
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s->ts_head = (s->ts_head + 1) % FF_ARRAY_ELEMS(s->timestamps);
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} else {
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flags |= ff_AMediaCodec_getBufferFlagEndOfStream(codec);
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s->eof_sent = 1;
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}
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ff_AMediaCodec_queueInputBuffer(codec, index, 0, input_size, pts, flags);
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return 0;
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}
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static int mediacodec_encode(AVCodecContext *avctx, AVPacket *pkt)
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{
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MediaCodecEncContext *s = avctx->priv_data;
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int ret;
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int got_packet = 0;
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// Return on three case:
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// 1. Serious error
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// 2. Got a packet success
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// 3. No AVFrame is available yet (don't return if get_frame return EOF)
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while (1) {
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ret = mediacodec_receive(avctx, pkt, &got_packet);
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if (!ret)
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return 0;
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else if (ret != AVERROR(EAGAIN))
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return ret;
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if (!s->frame->buf[0]) {
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ret = ff_encode_get_frame(avctx, s->frame);
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if (ret && ret != AVERROR_EOF)
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return ret;
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}
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ret = mediacodec_send(avctx, s->frame->buf[0] ? s->frame : NULL);
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if (!ret)
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av_frame_unref(s->frame);
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else if (ret != AVERROR(EAGAIN))
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return ret;
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}
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return 0;
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}
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static av_cold int mediacodec_close(AVCodecContext *avctx)
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{
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MediaCodecEncContext *s = avctx->priv_data;
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if (s->codec) {
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ff_AMediaCodec_stop(s->codec);
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ff_AMediaCodec_delete(s->codec);
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s->codec = NULL;
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}
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if (s->window) {
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ff_mediacodec_surface_unref(s->window, avctx);
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s->window = NULL;
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}
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av_frame_free(&s->frame);
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return 0;
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}
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static const AVCodecHWConfigInternal *const mediacodec_hw_configs[] = {
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&(const AVCodecHWConfigInternal) {
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.public = {
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.pix_fmt = AV_PIX_FMT_MEDIACODEC,
|
|
.methods = AV_CODEC_HW_CONFIG_METHOD_AD_HOC |
|
|
AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX,
|
|
.device_type = AV_HWDEVICE_TYPE_MEDIACODEC,
|
|
},
|
|
.hwaccel = NULL,
|
|
},
|
|
NULL
|
|
};
|
|
|
|
#define OFFSET(x) offsetof(MediaCodecEncContext, x)
|
|
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
|
|
static const AVOption common_options[] = {
|
|
{ "ndk_codec", "Use MediaCodec from NDK",
|
|
OFFSET(use_ndk_codec), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, VE },
|
|
{ "codec_name", "Select codec by name",
|
|
OFFSET(name), AV_OPT_TYPE_STRING, {0}, 0, 0, VE },
|
|
{ NULL },
|
|
};
|
|
|
|
#define MEDIACODEC_ENCODER_CLASS(name) \
|
|
static const AVClass name ## _mediacodec_class = { \
|
|
.class_name = #name "_mediacodec", \
|
|
.item_name = av_default_item_name, \
|
|
.option = common_options, \
|
|
.version = LIBAVUTIL_VERSION_INT, \
|
|
}; \
|
|
|
|
#define DECLARE_MEDIACODEC_ENCODER(short_name, long_name, codec_id) \
|
|
MEDIACODEC_ENCODER_CLASS(short_name) \
|
|
const FFCodec ff_ ## short_name ## _mediacodec_encoder = { \
|
|
.p.name = #short_name "_mediacodec", \
|
|
CODEC_LONG_NAME(long_name " Android MediaCodec encoder"), \
|
|
.p.type = AVMEDIA_TYPE_VIDEO, \
|
|
.p.id = codec_id, \
|
|
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY \
|
|
| AV_CODEC_CAP_HARDWARE, \
|
|
.priv_data_size = sizeof(MediaCodecEncContext), \
|
|
.p.pix_fmts = avc_pix_fmts, \
|
|
.init = mediacodec_init, \
|
|
FF_CODEC_RECEIVE_PACKET_CB(mediacodec_encode), \
|
|
.close = mediacodec_close, \
|
|
.p.priv_class = &short_name ## _mediacodec_class, \
|
|
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP, \
|
|
.p.wrapper_name = "mediacodec", \
|
|
.hw_configs = mediacodec_hw_configs, \
|
|
}; \
|
|
|
|
#if CONFIG_H264_MEDIACODEC_ENCODER
|
|
DECLARE_MEDIACODEC_ENCODER(h264, "H.264", AV_CODEC_ID_H264)
|
|
#endif
|
|
|
|
#if CONFIG_HEVC_MEDIACODEC_ENCODER
|
|
DECLARE_MEDIACODEC_ENCODER(hevc, "H.265", AV_CODEC_ID_HEVC)
|
|
#endif
|