@@ -258,7 +258,7 @@ OBJS-$(CONFIG_AURA2_DECODER) += aura.o
OBJS-$(CONFIG_AV1_DECODER) += av1dec.o av1_parse.o
OBJS-$(CONFIG_AV1_CUVID_DECODER) += cuviddec.o
OBJS-$(CONFIG_AV1_MEDIACODEC_DECODER) += mediacodecdec.o
-OBJS-$(CONFIG_AV1_MEDIACODEC_ENCODER) += mediacodecenc.o
+OBJS-$(CONFIG_AV1_MEDIACODEC_ENCODER) += mediacodecenc.o mediacodecenc_ctrl.o
OBJS-$(CONFIG_AV1_NVENC_ENCODER) += nvenc_av1.o nvenc.o
OBJS-$(CONFIG_AV1_QSV_ENCODER) += qsvenc_av1.o
OBJS-$(CONFIG_AV1_VAAPI_ENCODER) += vaapi_encode_av1.o av1_levels.o
@@ -174,6 +174,7 @@ struct JNIAMediaCodecFields {
jmethodID get_name_id;
jmethodID configure_id;
+ jmethodID set_parameters_id;
jmethodID start_id;
jmethodID flush_id;
jmethodID stop_id;
@@ -247,6 +248,9 @@ static const struct FFJniField jni_amediacodec_mapping[] = {
{ "android/media/MediaCodec", "setInputSurface", "(Landroid/view/Surface;)V", FF_JNI_METHOD, OFFSET(set_input_surface_id), 0 },
{ "android/media/MediaCodec", "signalEndOfInputStream", "()V", FF_JNI_METHOD, OFFSET(signal_end_of_input_stream_id), 0 },
+#if __ANDROID_API__ >= 26
+ { "android/media/MediaCodec", "setParameters", "(Landroid/media/MediaFormat;)V", FF_JNI_METHOD, OFFSET(set_parameters_id), 1 },
+#endif
{ "android/media/MediaCodec$BufferInfo", NULL, NULL, FF_JNI_CLASS, OFFSET(mediainfo_class), 1 },
@@ -1411,6 +1415,27 @@ fail:
return ret;
}
+#if __ANDROID_API__ >= 26
+static int mediacodec_jni_setParameters(FFAMediaCodec *ctx,
+ const FFAMediaFormat *format_ctx)
+{
+ int ret = 0;
+ JNIEnv *env = NULL;
+ FFAMediaCodecJni *codec = (FFAMediaCodecJni *)ctx;
+ const FFAMediaFormatJni *format = (FFAMediaFormatJni *)format_ctx;
+
+ JNI_GET_ENV_OR_RETURN(env, codec, AVERROR_EXTERNAL);
+
+ (*env)->CallVoidMethod(env, codec->object, codec->jfields.set_parameters_id, format->object);
+
+ if (ff_jni_exception_check(env, 1, codec) < 0) {
+ ret = AVERROR_EXTERNAL;
+ }
+
+ return ret;
+}
+#endif // __ANDROID_API__ >= 26
+
static int mediacodec_jni_start(FFAMediaCodec* ctx)
{
int ret = 0;
@@ -1821,6 +1846,10 @@ static const FFAMediaCodec media_codec_jni = {
.getConfigureFlagEncode = mediacodec_jni_getConfigureFlagEncode,
.cleanOutputBuffers = mediacodec_jni_cleanOutputBuffers,
.signalEndOfInputStream = mediacodec_jni_signalEndOfInputStream,
+
+#if __ANDROID_API__ >= 26
+ .setParameters = mediacodec_jni_setParameters,
+#endif //__ANDROID_API__ >= 26
};
typedef struct FFAMediaFormatNdk {
@@ -2178,6 +2207,23 @@ static int mediacodec_ndk_configure(FFAMediaCodec* ctx,
return 0;
}
+#if __ANDROID_API__ >= 26
+static int mediacodec_ndk_setParameters(FFAMediaCodec *ctx,
+ const FFAMediaFormat *format_ctx)
+{
+ FFAMediaCodecNdk *codec = (FFAMediaCodecNdk *)ctx;
+ FFAMediaFormatNdk *format = (FFAMediaFormatNdk *)format_ctx;
+
+ int status = AMediaCodec_setParameters(codec->impl, format->impl);
+ if (status != AMEDIA_OK) {
+ av_log(codec, AV_LOG_ERROR, "codec setParameters failed, %d\n", status);
+ return AVERROR_EXTERNAL;
+ }
+
+ return 0;
+}
+#endif //__ANDROID_API__ >= 26
+
#define MEDIACODEC_NDK_WRAPPER(method) \
static int mediacodec_ndk_ ## method(FFAMediaCodec* ctx) \
{ \
@@ -2396,6 +2442,10 @@ static const FFAMediaCodec media_codec_ndk = {
.getConfigureFlagEncode = mediacodec_ndk_getConfigureFlagEncode,
.cleanOutputBuffers = mediacodec_ndk_cleanOutputBuffers,
.signalEndOfInputStream = mediacodec_ndk_signalEndOfInputStream,
+
+#if __ANDROID_API__ >= 26
+ .setParameters = mediacodec_ndk_setParameters,
+#endif //__ANDROID_API__ >= 26
};
FFAMediaFormat *ff_AMediaFormat_new(int ndk)
@@ -219,6 +219,10 @@ struct FFAMediaCodec {
// For encoder with FFANativeWindow as input.
int (*signalEndOfInputStream)(FFAMediaCodec *);
+
+#if __ANDROID_API__ >= 26
+ int (*setParameters)(FFAMediaCodec* codec, const FFAMediaFormat* format);
+#endif //__ANDROID_API__ >= 26
};
static inline char *ff_AMediaCodec_getName(FFAMediaCodec *codec)
@@ -238,6 +242,14 @@ static inline int ff_AMediaCodec_configure(FFAMediaCodec *codec,
return codec->configure(codec, format, surface, crypto, flags);
}
+#if __ANDROID_API__ >= 26
+static inline int ff_AMediaCodec_setParameters(FFAMediaCodec *codec,
+ const FFAMediaFormat *format)
+{
+ return codec->setParameters(codec, format);
+}
+#endif //__ANDROID_API__ >= 26
+
static inline int ff_AMediaCodec_start(FFAMediaCodec* codec)
{
return codec->start(codec);
@@ -29,76 +29,16 @@
#include "libavutil/mem.h"
#include "libavutil/opt.h"
-#include "avcodec.h"
-#include "bsf.h"
#include "codec_internal.h"
#include "encode.h"
#include "hwconfig.h"
#include "jni.h"
#include "mediacodec.h"
-#include "mediacodec_wrapper.h"
#include "mediacodecdec_common.h"
+#include "mediacodecenc_ctrl.h"
#include "profiles.h"
-
-#define INPUT_DEQUEUE_TIMEOUT_US 8000
-#define OUTPUT_DEQUEUE_TIMEOUT_US 8000
-
-enum BitrateMode {
- /* Constant quality mode */
- BITRATE_MODE_CQ = 0,
- /* Variable bitrate mode */
- BITRATE_MODE_VBR = 1,
- /* Constant bitrate mode */
- BITRATE_MODE_CBR = 2,
- /* Constant bitrate mode with frame drops */
- BITRATE_MODE_CBR_FD = 3,
-};
-
-typedef struct MediaCodecEncContext {
- AVClass *avclass;
- FFAMediaCodec *codec;
- int use_ndk_codec;
- const char *name;
- FFANativeWindow *window;
-
- int fps;
- int width;
- int height;
-
- uint8_t *extradata;
- int extradata_size;
- int eof_sent;
-
- AVFrame *frame;
- AVBSFContext *bsf;
-
- int bitrate_mode;
- int level;
- int pts_as_dts;
- int extract_extradata;
-} MediaCodecEncContext;
-
-enum {
- COLOR_FormatYUV420Planar = 0x13,
- COLOR_FormatYUV420SemiPlanar = 0x15,
- COLOR_FormatSurface = 0x7F000789,
-};
-
-static const struct {
- int color_format;
- enum AVPixelFormat pix_fmt;
-} color_formats[] = {
- { COLOR_FormatYUV420Planar, AV_PIX_FMT_YUV420P },
- { COLOR_FormatYUV420SemiPlanar, AV_PIX_FMT_NV12 },
- { COLOR_FormatSurface, AV_PIX_FMT_MEDIACODEC },
-};
-
-static const enum AVPixelFormat avc_pix_fmts[] = {
- AV_PIX_FMT_MEDIACODEC,
- AV_PIX_FMT_YUV420P,
- AV_PIX_FMT_NV12,
- AV_PIX_FMT_NONE
-};
+#include "mediacodecenc.h"
+#include "mediacodecenc_ctrl.h"
static void mediacodec_output_format(AVCodecContext *avctx)
{
@@ -307,6 +247,20 @@ static av_cold int mediacodec_init(AVCodecContext *avctx)
if (s->bitrate_mode == BITRATE_MODE_CQ && avctx->global_quality > 0)
ff_AMediaFormat_setInt32(format, "quality", avctx->global_quality);
}
+
+ if (strlen(s->bitrate_ctrl_socket) != 0) {
+#if __ANDROID_API__ >= 26
+ int error = mediacodecenc_ctrl_init(avctx, format);
+ if (error) {
+ av_log(avctx, AV_LOG_ERROR, "unable to initialize the control socket '%s' for MediaCodec bitrate: errcode:%d, description:'%s'\n", s->bitrate_ctrl_socket, errno, strerror(errno));
+ goto bailout;
+ }
+#else
+ av_log(avctx, AV_LOG_ERROR, "ffmpeg was compiled against Android API version %d, but option -bitrate_ctrl_socket requires version 26\n", __ANDROID_API__);
+ goto bailout;
+#endif //__ANDROID_API__ >= 26
+ }
+
// frame-rate and i-frame-interval are required to configure codec
if (avctx->framerate.num >= avctx->framerate.den && avctx->framerate.den > 0) {
s->fps = avctx->framerate.num / avctx->framerate.den;
@@ -385,6 +339,37 @@ bailout:
return ret;
}
+#if __ANDROID_API__ >= 26
+static void update_bitrate(AVCodecContext *avctx) {
+ MediaCodecEncContext *s = avctx->priv_data;
+
+ uint64_t bitrate_new = __atomic_load_n(&s->ctrl_ctx.bitrate_next, __ATOMIC_SEQ_CST);
+ if (bitrate_new == s->ctrl_ctx.bitrate_cur) {
+ return;
+ }
+
+ if (bitrate_new < 1) {
+ return;
+ }
+
+ if (bitrate_new > UINT32_MAX) {
+ av_log(avctx, AV_LOG_ERROR, "the requested bitrate %lu overflows a 32bit integer: %lu > %u\n", bitrate_new, bitrate_new, UINT32_MAX);
+ return;
+ }
+
+ av_log(avctx, AV_LOG_DEBUG, "sending a message to update the bitrate through format %p using method %p\n", s->ctrl_ctx.out_format, s->ctrl_ctx.out_format->setInt32);
+
+ ff_AMediaFormat_setInt32(s->ctrl_ctx.out_format, (char *)"video-bitrate", bitrate_new);
+ if (ff_AMediaCodec_setParameters(s->codec, s->ctrl_ctx.out_format)) {
+ av_log(avctx, AV_LOG_ERROR, "unable to set the bitrate to %lu\n", bitrate_new);
+ return;
+ }
+
+ av_log(avctx, AV_LOG_INFO, "changed the bitrate: %lu -> %lu\n", s->ctrl_ctx.bitrate_cur, bitrate_new);
+ __atomic_store_n(&s->ctrl_ctx.bitrate_cur, bitrate_new, __ATOMIC_SEQ_CST);
+}
+#endif //__ANDROID_API__ >= 26
+
static int mediacodec_receive(AVCodecContext *avctx, AVPacket *pkt)
{
MediaCodecEncContext *s = avctx->priv_data;
@@ -395,6 +380,7 @@ static int mediacodec_receive(AVCodecContext *avctx, AVPacket *pkt)
int ret;
int extradata_size = 0;
int64_t timeout_us = s->eof_sent ? OUTPUT_DEQUEUE_TIMEOUT_US : 0;
+
ssize_t index = ff_AMediaCodec_dequeueOutputBuffer(codec, &out_info, timeout_us);
if (ff_AMediaCodec_infoTryAgainLater(codec, index))
@@ -563,6 +549,13 @@ static int mediacodec_encode(AVCodecContext *avctx, AVPacket *pkt)
return 0;
}
+#if __ANDROID_API__ >= 26
+ if (strlen(s->bitrate_ctrl_socket) != 0 && s->ctrl_ctx.bitrate_next != s->ctrl_ctx.bitrate_cur) {
+ av_log(avctx, AV_LOG_TRACE, "calling update_bitrate\n");
+ update_bitrate(avctx);
+ }
+#endif //__ANDROID_API__ >= 26
+
if (ret < 0 && ret != AVERROR(EAGAIN))
return ret;
@@ -689,6 +682,13 @@ bailout:
static av_cold int mediacodec_close(AVCodecContext *avctx)
{
MediaCodecEncContext *s = avctx->priv_data;
+
+#if __ANDROID_API__ >= 26
+ if (strlen(s->bitrate_ctrl_socket) != 0) {
+ mediacodecenc_ctrl_deinit(avctx);
+ }
+#endif //__ANDROID_API__ >= 26
+
if (s->codec) {
ff_AMediaCodec_stop(s->codec);
ff_AMediaCodec_delete(s->codec);
@@ -737,6 +737,8 @@ static const AVCodecHWConfigInternal *const mediacodec_hw_configs[] = {
OFFSET(name), AV_OPT_TYPE_STRING, {0}, 0, 0, VE }, \
{ "bitrate_mode", "Bitrate control method", \
OFFSET(bitrate_mode), AV_OPT_TYPE_INT, {.i64 = -1}, -1, INT_MAX, VE, .unit = "bitrate_mode" }, \
+ { "bitrate_ctrl_socket", "Enable (and set path to) a control UNIX socket that receives uint64_t big-endian messages that dynamically override the bitrate; the value is given in bits per second.", \
+ OFFSET(bitrate_ctrl_socket), AV_OPT_TYPE_STRING, {.str = ""}, 0, 0, VE }, \
{ "cq", "Constant quality mode", \
0, AV_OPT_TYPE_CONST, {.i64 = BITRATE_MODE_CQ}, 0, 0, VE, .unit = "bitrate_mode" }, \
{ "vbr", "Variable bitrate mode", \
new file mode 100644
@@ -0,0 +1,97 @@
+/*
+ * Android MediaCodec encoders
+ *
+ * Copyright (c) 2022 Zhao Zhili <zhilizhao@tencent.com>
+ * Copyright (c) 2024 Dmitrii Okunev <xaionaro@gmail.com>
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_MEDIACODECENC_H
+#define AVCODEC_MEDIACODECENC_H
+
+#include "avcodec.h"
+#include "bsf.h"
+#include "mediacodec_wrapper.h"
+#include "mediacodecenc_ctrl.h"
+
+#define INPUT_DEQUEUE_TIMEOUT_US 8000
+#define OUTPUT_DEQUEUE_TIMEOUT_US 8000
+
+enum BitrateMode {
+ /* Constant quality mode */
+ BITRATE_MODE_CQ = 0,
+ /* Variable bitrate mode */
+ BITRATE_MODE_VBR = 1,
+ /* Constant bitrate mode */
+ BITRATE_MODE_CBR = 2,
+ /* Constant bitrate mode with frame drops */
+ BITRATE_MODE_CBR_FD = 3,
+};
+
+typedef struct MediaCodecEncContext {
+ AVClass *avclass;
+ FFAMediaCodec *codec;
+ int use_ndk_codec;
+ const char *name;
+ FFANativeWindow *window;
+
+ int fps;
+ int width;
+ int height;
+
+ uint8_t *extradata;
+ int extradata_size;
+ int eof_sent;
+
+ AVFrame *frame;
+ AVBSFContext *bsf;
+
+ int bitrate_mode;
+ char *bitrate_ctrl_socket;
+ int level;
+ int pts_as_dts;
+ int extract_extradata;
+
+#if __ANDROID_API__ >= 26
+ MediaCodecEncControlContext ctrl_ctx;
+#endif //__ANDROID_API__ >= 26
+} MediaCodecEncContext;
+
+enum {
+ COLOR_FormatYUV420Planar = 0x13,
+ COLOR_FormatYUV420SemiPlanar = 0x15,
+ COLOR_FormatSurface = 0x7F000789,
+};
+
+static const struct {
+ int color_format;
+ enum AVPixelFormat pix_fmt;
+} color_formats[] = {
+ { COLOR_FormatYUV420Planar, AV_PIX_FMT_YUV420P },
+ { COLOR_FormatYUV420SemiPlanar, AV_PIX_FMT_NV12 },
+ { COLOR_FormatSurface, AV_PIX_FMT_MEDIACODEC },
+};
+
+static const enum AVPixelFormat avc_pix_fmts[] = {
+ AV_PIX_FMT_MEDIACODEC,
+ AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_NV12,
+ AV_PIX_FMT_NONE
+};
+
+#endif /* AVCODEC_MEDIACODECENC_H */
new file mode 100644
@@ -0,0 +1,194 @@
+/*
+ * Android MediaCodec encoders
+ *
+ * Copyright (c) 2024 Dmitrii Okunev <xaionaro@gmail.com>
+ *
+ * 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
+ */
+
+#if __ANDROID_API__ >= 26
+
+#include <endian.h>
+#include <stdatomic.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <pthread.h>
+
+#include "mediacodecenc_ctrl.h"
+#include "mediacodecenc.h"
+
+typedef struct mediacodecenc_ctrl_handle_connection_context {
+ int client_sock_fd;
+ AVCodecContext *avctx;
+} mediacodecenc_ctrl_handle_connection_context_t;
+
+static void *mediacodecenc_ctrl_handle_connection(void *arg) {
+ mediacodecenc_ctrl_handle_connection_context_t *hctx = arg;
+ AVCodecContext *avctx = hctx->avctx;
+ MediaCodecEncContext *s = avctx->priv_data;
+
+ while (1) {
+ uint64_t received_value, bitrate_old, bitrate_new;
+ ssize_t num_bytes = recv(hctx->client_sock_fd, &received_value, sizeof(received_value), MSG_CMSG_CLOEXEC);
+ if (num_bytes <= 0) {
+ switch (errno) {
+ case 0:
+ case ECONNRESET:
+ case EPIPE:
+ case EBADF:
+ av_log(avctx, AV_LOG_INFO, "The MediaCodec control connection was closed: errno:%d: %s\n", errno, strerror(errno));
+ break;
+ default:
+ av_log(avctx, AV_LOG_ERROR, "A failure of a MediaCodec control connection: errno:%d: %s\n", errno, strerror(errno));
+ }
+ break;
+ }
+
+ bitrate_new = be64toh(received_value);
+
+ av_log(avctx, AV_LOG_TRACE, "Received a message to change the bitrate to %lu.\n", bitrate_new);
+
+ bitrate_old = __atomic_load_n(&s->ctrl_ctx.bitrate_cur, __ATOMIC_SEQ_CST);
+ if (bitrate_new == bitrate_old) {
+ av_log(avctx, AV_LOG_INFO, "Received a message to change the bitrate, but the bitrate is already %lu, not changing.\n", bitrate_old);
+ continue;
+ }
+
+ av_log(avctx, AV_LOG_INFO, "Received a message to change the bitrate from %lu to %lu.\n", bitrate_old, bitrate_new);
+ __atomic_store_n(&s->ctrl_ctx.bitrate_next, bitrate_new, __ATOMIC_SEQ_CST);
+ }
+
+ close(hctx->client_sock_fd);
+ free(hctx);
+ pthread_exit(NULL);
+}
+
+static void *mediacodecenc_ctrl_handle_listener(void *_avctx) {
+ AVCodecContext *avctx = _avctx;
+ MediaCodecEncContext *s = avctx->priv_data;
+
+ if (listen(s->ctrl_ctx.server_sock_fd, 5) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to start listening socket '%s': errno:%d: %s\n", s->ctrl_ctx.server_sock_path, errno, strerror(errno));
+ goto mediacodecenc_ctrl_handle_listener_end;
+ }
+
+ av_log(avctx, AV_LOG_TRACE, "Listening socket '%s'\n", s->ctrl_ctx.server_sock_path);
+
+ s->ctrl_ctx.listener_status = mcls_running;
+ while (s->ctrl_ctx.listener_status == mcls_running) {
+ pthread_t client_thread_id;
+ int pthread_error;
+ mediacodecenc_ctrl_handle_connection_context_t *hctx;
+
+ int client_sock_fd = accept(s->ctrl_ctx.server_sock_fd, NULL, NULL);
+ if (client_sock_fd < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to accept a connection to socket '%s': code:%d: description:%s\n", s->ctrl_ctx.server_sock_path, errno, strerror(errno));
+ continue;
+ }
+
+ av_log(avctx, AV_LOG_TRACE, "Accepted a connection to '%s'\n", s->ctrl_ctx.server_sock_path);
+
+ hctx = malloc(sizeof(mediacodecenc_ctrl_handle_connection_context_t));
+ hctx->client_sock_fd = client_sock_fd;
+ hctx->avctx = avctx;
+
+ pthread_error = pthread_create(&client_thread_id, NULL, mediacodecenc_ctrl_handle_connection, hctx);
+ if (pthread_error != 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to accept a connection to socket '%s': code:%d: description:%s\n", s->ctrl_ctx.server_sock_path, pthread_error, strerror(pthread_error));
+ free(hctx);
+ close(client_sock_fd);
+ continue;
+ }
+
+ // mediacodecenc_ctrl_handle_connection takes ownership of hctx and frees it when finished,
+ // so we are only detaching here and that's it.
+ pthread_error = pthread_detach(client_thread_id);
+ if (pthread_error != 0) {
+ av_log(avctx, AV_LOG_ERROR, "Unable to detach the client handler thread: code:%d: description:%s\n", pthread_error, strerror(pthread_error));
+ }
+ }
+
+mediacodecenc_ctrl_handle_listener_end:
+ close(s->ctrl_ctx.server_sock_fd);
+ unlink(s->ctrl_ctx.server_sock_path);
+ s->ctrl_ctx.listener_status = mcls_stopped;
+ pthread_exit(NULL);
+}
+
+int mediacodecenc_ctrl_init(AVCodecContext *avctx, FFAMediaFormat *format) {
+ MediaCodecEncContext *s = avctx->priv_data;
+ char *socket_path = s->bitrate_ctrl_socket;
+ int server_sock_fd;
+ struct sockaddr_un server_addr;
+ int pthread_error;
+
+ s->ctrl_ctx.bitrate_cur = avctx->bit_rate;
+ s->ctrl_ctx.bitrate_next = s->ctrl_ctx.bitrate_cur;
+ s->ctrl_ctx.out_format = format;
+
+ server_sock_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+ if (server_sock_fd < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create socket '%s': errno:%d: %s\n", socket_path, errno, strerror(errno));
+ return errno;
+ }
+
+ memset(&server_addr, 0, sizeof(struct sockaddr_un));
+ server_addr.sun_family = AF_UNIX;
+ strncpy(server_addr.sun_path, socket_path, sizeof(server_addr.sun_path) - 1);
+
+ if (bind(server_sock_fd, (struct sockaddr *)&server_addr, sizeof(struct sockaddr_un)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to bind to the socket '%s': errno:%d: %s\n", socket_path, errno, strerror(errno));
+ return errno;
+ }
+ s->ctrl_ctx.server_sock_path = socket_path;
+ s->ctrl_ctx.server_sock_fd = server_sock_fd;
+
+ pthread_error = pthread_create(&s->ctrl_ctx.listener_thread_id, NULL, mediacodecenc_ctrl_handle_listener, avctx);
+ if (pthread_error != 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create a thread to listen the socket '%s': errno:%d: %s\n", socket_path, pthread_error, strerror(pthread_error));
+ return pthread_error;
+ }
+
+ return 0;
+}
+
+int mediacodecenc_ctrl_deinit(AVCodecContext *avctx) {
+ MediaCodecEncContext *s = avctx->priv_data;
+ void *retval;
+ int pthread_error;
+ if (s->ctrl_ctx.listener_thread_id != 0) {
+ return 0;
+ }
+
+ s->ctrl_ctx.listener_status = mcls_stopping;
+ close(s->ctrl_ctx.server_sock_fd);
+
+ pthread_error = pthread_join(s->ctrl_ctx.listener_thread_id, &retval);
+ if (pthread_error != 0) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to detach from the listener thread of the socket '%s': errno:%d: %s\n", s->ctrl_ctx.server_sock_path, pthread_error, strerror(pthread_error));
+ return pthread_error;
+ }
+
+ ff_AMediaFormat_delete(s->ctrl_ctx.out_format);
+ return 0;
+}
+
+#endif //__ANDROID_API__ >= 26
new file mode 100644
@@ -0,0 +1,50 @@
+/*
+ * Android MediaCodec encoders
+ *
+ * Copyright (c) 2024 Dmitrii Okunev <xaionaro@gmail.com>
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_MEDIACODECENC_CTRL_H
+#define AVCODEC_MEDIACODECENC_CTRL_H
+#if __ANDROID_API__ >= 26
+
+#include "avcodec.h"
+#include "mediacodec_wrapper.h"
+
+typedef enum mediacodecenc_ctrl_listener_status {
+ mcls_stopped = 0,
+ mcls_running = 1,
+ mcls_stopping = 2,
+} mediacodecenc_ctrl_listener_status_t;
+
+typedef struct mediacodecenc_ctrl_ctx {
+ char *server_sock_path;
+ int server_sock_fd;
+ pthread_t listener_thread_id;
+ mediacodecenc_ctrl_listener_status_t listener_status;
+ uint64_t bitrate_cur;
+ uint64_t bitrate_next;
+ FFAMediaFormat *out_format;
+} MediaCodecEncControlContext;
+
+extern int mediacodecenc_ctrl_init(AVCodecContext *avctx, FFAMediaFormat *format);
+extern int mediacodecenc_ctrl_deinit(AVCodecContext *avctx);
+
+#endif //__ANDROID_API__ >= 26
+#endif /* AVCODEC_MEDIACODECENC_CTRL_H */
MediaCodec supports parameter "video-bitrate" to change the bitrate on fly. This commit adds capability to use it. It adds option -bitrate_ctrl_socket to the encoder which makes the encoder to create an UNIX socket and listen for messages to change the bitrate. An example of ffmpeg execution: ffmpeg -f flv -i rtmp://0.0.0.0:1935/live/myStream -c:v hevc_mediacodec -bitrate_ctrl_socket /run/bitrate.sock -b:v 8M -f flv rtmp://127.0.0.1:1935/live/reEncoded An example of changing the bitrate to 1000 Kbps: printf '%016X' 1000000 | xxd -r -p | socat -u STDIN UNIX:/run/bitrate.sock Signed-off-by: Dmitrii Okunev <xaionaro@gmail.com> --- libavcodec/Makefile | 2 +- libavcodec/mediacodec_wrapper.c | 50 ++++++++ libavcodec/mediacodec_wrapper.h | 12 ++ libavcodec/mediacodecenc.c | 128 ++++++++++----------- libavcodec/mediacodecenc.h | 97 ++++++++++++++++ libavcodec/mediacodecenc_ctrl.c | 194 ++++++++++++++++++++++++++++++++ libavcodec/mediacodecenc_ctrl.h | 50 ++++++++ 7 files changed, 469 insertions(+), 64 deletions(-) create mode 100644 libavcodec/mediacodecenc.h create mode 100644 libavcodec/mediacodecenc_ctrl.c create mode 100644 libavcodec/mediacodecenc_ctrl.h