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https://github.com/FFmpeg/FFmpeg.git
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936312d18c
Some Android devices are very finicky about how quicky output buffers are returned back to the decoder, especially when they are associated with a Surface. This commit adds a new counter that keeps track of exactly how many hw output buffers are being retained by the user, along with DEBUG level logging that makes it easy to track the lifecycle of these buffers. Signed-off-by: Aman Gupta <aman@tmm1.net> Signed-off-by: Matthieu Bouron <matthieu.bouron@gmail.com>
129 lines
3.1 KiB
C
129 lines
3.1 KiB
C
/*
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* Android MediaCodec public API functions
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*
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* Copyright (c) 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 "config.h"
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#include "libavutil/error.h"
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#include "mediacodec.h"
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#if CONFIG_MEDIACODEC
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#include <jni.h>
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#include "libavcodec/avcodec.h"
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#include "libavutil/mem.h"
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#include "ffjni.h"
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#include "mediacodecdec_common.h"
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#include "version.h"
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AVMediaCodecContext *av_mediacodec_alloc_context(void)
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{
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return av_mallocz(sizeof(AVMediaCodecContext));
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}
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int av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)
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{
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int ret = 0;
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JNIEnv *env = NULL;
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env = ff_jni_get_env(avctx);
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if (!env) {
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return AVERROR_EXTERNAL;
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}
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ctx->surface = (*env)->NewGlobalRef(env, surface);
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if (ctx->surface) {
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avctx->hwaccel_context = ctx;
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} else {
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av_log(avctx, AV_LOG_ERROR, "Could not create new global reference\n");
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ret = AVERROR_EXTERNAL;
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}
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return ret;
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}
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void av_mediacodec_default_free(AVCodecContext *avctx)
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{
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JNIEnv *env = NULL;
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AVMediaCodecContext *ctx = avctx->hwaccel_context;
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if (!ctx) {
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return;
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}
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env = ff_jni_get_env(avctx);
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if (!env) {
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return;
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}
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if (ctx->surface) {
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(*env)->DeleteGlobalRef(env, ctx->surface);
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ctx->surface = NULL;
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}
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av_freep(&avctx->hwaccel_context);
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}
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int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
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{
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MediaCodecDecContext *ctx = buffer->ctx;
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int released = atomic_fetch_add(&buffer->released, 1);
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if (!released && (ctx->delay_flush || buffer->serial == atomic_load(&ctx->serial))) {
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atomic_fetch_sub(&ctx->hw_buffer_count, 1);
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av_log(ctx->avctx, AV_LOG_DEBUG,
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"Releasing output buffer %zd (%p) ts=%"PRId64" with render=%d [%d pending]\n",
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buffer->index, buffer, buffer->pts, render, atomic_load(&ctx->hw_buffer_count));
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return ff_AMediaCodec_releaseOutputBuffer(ctx->codec, buffer->index, render);
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}
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return 0;
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}
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#else
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#include <stdlib.h>
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AVMediaCodecContext *av_mediacodec_alloc_context(void)
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{
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return NULL;
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}
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int av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)
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{
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return AVERROR(ENOSYS);
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}
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void av_mediacodec_default_free(AVCodecContext *avctx)
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{
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}
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int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
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{
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return AVERROR(ENOSYS);
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}
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#endif
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