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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <android/native_window.h>
#include <dlfcn.h>
#include <media/NdkMediaCodec.h>
#include "buffer.h"
#include "common.h"
#include "hwcontext.h"
#include "hwcontext_internal.h"
#include "hwcontext_mediacodec.h"
typedef struct MediaCodecDeviceContext {
AVMediaCodecDeviceContext ctx;
void *libmedia;
media_status_t (*create_surface)(ANativeWindow **surface);
} MediaCodecDeviceContext;
static int mc_device_create(AVHWDeviceContext *ctx, const char *device,
AVDictionary *opts, int flags)
{
const AVDictionaryEntry *entry = NULL;
MediaCodecDeviceContext *s = ctx->hwctx;
AVMediaCodecDeviceContext *dev = &s->ctx;
if (device && device[0]) {
av_log(ctx, AV_LOG_ERROR, "Device selection unsupported.\n");
return AVERROR_UNKNOWN;
}
while ((entry = av_dict_iterate(opts, entry))) {
if (!strcmp(entry->key, "create_window"))
dev->create_window = atoi(entry->value);
}
av_log(ctx, AV_LOG_DEBUG, "%s createPersistentInputSurface\n",
dev->create_window ? "Enable" : "Disable");
return 0;
}
static int mc_device_init(AVHWDeviceContext *ctx)
{
MediaCodecDeviceContext *s = ctx->hwctx;
AVMediaCodecDeviceContext *dev = (AVMediaCodecDeviceContext *)s;
ANativeWindow *native_window = NULL;
if (dev->surface)
return 0;
if (dev->native_window)
return 0;
// For backward compatibility, don't return error for a dummy
// AVHWDeviceContext without surface or native_window.
if (!dev->create_window)
return 0;
s->libmedia = dlopen("libmediandk.so", RTLD_NOW);
if (!s->libmedia)
return AVERROR_UNKNOWN;
s->create_surface = dlsym(s->libmedia, "AMediaCodec_createPersistentInputSurface");
if (!s->create_surface)
return AVERROR_UNKNOWN;
s->create_surface(&native_window);
dev->native_window = native_window;
return 0;
}
static void mc_device_uninit(AVHWDeviceContext *ctx)
{
MediaCodecDeviceContext *s = ctx->hwctx;
AVMediaCodecDeviceContext *dev = ctx->hwctx;
if (!s->libmedia)
return;
if (dev->native_window) {
ANativeWindow_release(dev->native_window);
dev->native_window = NULL;
}
dlclose(s->libmedia);
s->libmedia = NULL;
}
const HWContextType ff_hwcontext_type_mediacodec = {
.type = AV_HWDEVICE_TYPE_MEDIACODEC,
.name = "mediacodec",
.device_hwctx_size = sizeof(MediaCodecDeviceContext),
.device_create = mc_device_create,
.device_init = mc_device_init,
.device_uninit = mc_device_uninit,
.pix_fmts = (const enum AVPixelFormat[]){
AV_PIX_FMT_MEDIACODEC,
AV_PIX_FMT_NONE
},
};
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