path: root/libavcodec/mediacodec.c (plain)
blob: 610bb49a733ba01f0234a580c37cf92070b0206e

1	/*
2	* Android MediaCodec public API functions
3	*
4	* Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
5	*
6	* This file is part of FFmpeg.
7	*
8	* FFmpeg is free software; you can redistribute it and/or
9	* modify it under the terms of the GNU Lesser General Public
10	* License as published by the Free Software Foundation; either
11	* version 2.1 of the License, or (at your option) any later version.
12	*
13	* FFmpeg is distributed in the hope that it will be useful,
14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16	* Lesser General Public License for more details.
17	*
18	* You should have received a copy of the GNU Lesser General Public
19	* License along with FFmpeg; if not, write to the Free Software
20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21	*/
22
23	#include "config.h"
24
25	#include "libavutil/error.h"
26
27	#include "mediacodec.h"
28
29	#if CONFIG_H264_MEDIACODEC_HWACCEL
30
31	#include <jni.h>
32
33	#include "libavcodec/avcodec.h"
34	#include "libavutil/mem.h"
35
36	#include "ffjni.h"
37	#include "mediacodecdec_common.h"
38	#include "version.h"
39
40	AVMediaCodecContext *av_mediacodec_alloc_context(void)
41	{
42	return av_mallocz(sizeof(AVMediaCodecContext));
43	}
44
45	int av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)
46	{
47	int ret = 0;
48	JNIEnv *env = NULL;
49
50	env = ff_jni_get_env(avctx);
51	if (!env) {
52	return AVERROR_EXTERNAL;
53	}
54
55	ctx->surface = (*env)->NewGlobalRef(env, surface);
56	if (ctx->surface) {
57	avctx->hwaccel_context = ctx;
58	} else {
59	av_log(avctx, AV_LOG_ERROR, "Could not create new global reference\n");
60	ret = AVERROR_EXTERNAL;
61	}
62
63	return ret;
64	}
65
66	void av_mediacodec_default_free(AVCodecContext *avctx)
67	{
68	JNIEnv *env = NULL;
69
70	AVMediaCodecContext *ctx = avctx->hwaccel_context;
71
72	if (!ctx) {
73	return;
74	}
75
76	env = ff_jni_get_env(avctx);
77	if (!env) {
78	return;
79	}
80
81	if (ctx->surface) {
82	(*env)->DeleteGlobalRef(env, ctx->surface);
83	ctx->surface = NULL;
84	}
85
86	av_freep(&avctx->hwaccel_context);
87	}
88
89	int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
90	{
91	MediaCodecDecContext *ctx = buffer->ctx;
92	int released = atomic_fetch_add(&buffer->released, 1);
93
94	if (!released) {
95	return ff_AMediaCodec_releaseOutputBuffer(ctx->codec, buffer->index, render);
96	}
97
98	return 0;
99	}
100
101	#else
102
103	#include <stdlib.h>
104
105	AVMediaCodecContext *av_mediacodec_alloc_context(void)
106	{
107	return NULL;
108	}
109
110	int av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)
111	{
112	return AVERROR(ENOSYS);
113	}
114
115	void av_mediacodec_default_free(AVCodecContext *avctx)
116	{
117	}
118
119	int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
120	{
121	return AVERROR(ENOSYS);
122	}
123
124	#endif
125