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_MEDIACODEC
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
av_mediacodec_alloc_context(void)39 AVMediaCodecContext *av_mediacodec_alloc_context(void)
40 {
41 return av_mallocz(sizeof(AVMediaCodecContext));
42 }
43
av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)44 int av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)
45 {
46 int ret = 0;
47 JNIEnv *env = NULL;
48
49 env = ff_jni_get_env(avctx);
50 if (!env) {
51 return AVERROR_EXTERNAL;
52 }
53
54 ctx->surface = (*env)->NewGlobalRef(env, surface);
55 if (ctx->surface) {
56 avctx->hwaccel_context = ctx;
57 } else {
58 av_log(avctx, AV_LOG_ERROR, "Could not create new global reference\n");
59 ret = AVERROR_EXTERNAL;
60 }
61
62 return ret;
63 }
64
av_mediacodec_default_free(AVCodecContext *avctx)65 void av_mediacodec_default_free(AVCodecContext *avctx)
66 {
67 JNIEnv *env = NULL;
68
69 AVMediaCodecContext *ctx = avctx->hwaccel_context;
70
71 if (!ctx) {
72 return;
73 }
74
75 env = ff_jni_get_env(avctx);
76 if (!env) {
77 return;
78 }
79
80 if (ctx->surface) {
81 (*env)->DeleteGlobalRef(env, ctx->surface);
82 ctx->surface = NULL;
83 }
84
85 av_freep(&avctx->hwaccel_context);
86 }
87
av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)88 int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
89 {
90 MediaCodecDecContext *ctx = buffer->ctx;
91 int released = atomic_fetch_add(&buffer->released, 1);
92
93 if (!released && (ctx->delay_flush || buffer->serial == atomic_load(&ctx->serial))) {
94 atomic_fetch_sub(&ctx->hw_buffer_count, 1);
95 av_log(ctx->avctx, AV_LOG_DEBUG,
96 "Releasing output buffer %zd (%p) ts=%"PRId64" with render=%d [%d pending]\n",
97 buffer->index, buffer, buffer->pts, render, atomic_load(&ctx->hw_buffer_count));
98 return ff_AMediaCodec_releaseOutputBuffer(ctx->codec, buffer->index, render);
99 }
100
101 return 0;
102 }
103
av_mediacodec_render_buffer_at_time(AVMediaCodecBuffer *buffer, int64_t time)104 int av_mediacodec_render_buffer_at_time(AVMediaCodecBuffer *buffer, int64_t time)
105 {
106 MediaCodecDecContext *ctx = buffer->ctx;
107 int released = atomic_fetch_add(&buffer->released, 1);
108
109 if (!released && (ctx->delay_flush || buffer->serial == atomic_load(&ctx->serial))) {
110 atomic_fetch_sub(&ctx->hw_buffer_count, 1);
111 av_log(ctx->avctx, AV_LOG_DEBUG,
112 "Rendering output buffer %zd (%p) ts=%"PRId64" with time=%"PRId64" [%d pending]\n",
113 buffer->index, buffer, buffer->pts, time, atomic_load(&ctx->hw_buffer_count));
114 return ff_AMediaCodec_releaseOutputBufferAtTime(ctx->codec, buffer->index, time);
115 }
116
117 return 0;
118 }
119
120 #else
121
122 #include <stdlib.h>
123
av_mediacodec_alloc_context(void)124 AVMediaCodecContext *av_mediacodec_alloc_context(void)
125 {
126 return NULL;
127 }
128
av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)129 int av_mediacodec_default_init(AVCodecContext *avctx, AVMediaCodecContext *ctx, void *surface)
130 {
131 return AVERROR(ENOSYS);
132 }
133
av_mediacodec_default_free(AVCodecContext *avctx)134 void av_mediacodec_default_free(AVCodecContext *avctx)
135 {
136 }
137
av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)138 int av_mediacodec_release_buffer(AVMediaCodecBuffer *buffer, int render)
139 {
140 return AVERROR(ENOSYS);
141 }
142
av_mediacodec_render_buffer_at_time(AVMediaCodecBuffer *buffer, int64_t time)143 int av_mediacodec_render_buffer_at_time(AVMediaCodecBuffer *buffer, int64_t time)
144 {
145 return AVERROR(ENOSYS);
146 }
147
148 #endif
149