mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 16:52:31 +00:00
6dbb64fdcc
Fixes the following warnings: libavcodec/v4l2_m2m_enc.c:51:12: warning: missing braces around initializer libavcodec/v4l2_m2m_enc.c:71:12: warning: missing braces around initializer
353 lines
11 KiB
C
353 lines
11 KiB
C
/*
|
|
* V4L2 mem2mem encoders
|
|
*
|
|
* Copyright (C) 2017 Alexis Ballier <aballier@gentoo.org>
|
|
* Copyright (C) 2017 Jorge Ramirez <jorge.ramirez-ortiz@linaro.org>
|
|
*
|
|
* 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 <linux/videodev2.h>
|
|
#include <sys/ioctl.h>
|
|
#include <search.h>
|
|
#include "libavcodec/avcodec.h"
|
|
#include "libavutil/pixdesc.h"
|
|
#include "libavutil/pixfmt.h"
|
|
#include "libavutil/opt.h"
|
|
#include "v4l2_context.h"
|
|
#include "v4l2_m2m.h"
|
|
|
|
#define MPEG_CID(x) V4L2_CID_MPEG_VIDEO_##x
|
|
#define MPEG_VIDEO(x) V4L2_MPEG_VIDEO_##x
|
|
|
|
static inline void v4l2_set_timeperframe(V4L2m2mContext *s, unsigned int num, unsigned int den)
|
|
{
|
|
struct v4l2_streamparm parm = { 0 };
|
|
|
|
parm.type = V4L2_TYPE_IS_MULTIPLANAR(s->output.type) ? V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE : V4L2_BUF_TYPE_VIDEO_OUTPUT;
|
|
parm.parm.output.timeperframe.denominator = den;
|
|
parm.parm.output.timeperframe.numerator = num;
|
|
|
|
if (ioctl(s->fd, VIDIOC_S_PARM, &parm) < 0)
|
|
av_log(s->avctx, AV_LOG_WARNING, "Failed to set timeperframe");
|
|
}
|
|
|
|
static inline void v4l2_set_ext_ctrl(V4L2m2mContext *s, unsigned int id, signed int value, const char *name)
|
|
{
|
|
struct v4l2_ext_controls ctrls = { { 0 } };
|
|
struct v4l2_ext_control ctrl = { 0 };
|
|
|
|
/* set ctrls */
|
|
ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
|
|
ctrls.controls = &ctrl;
|
|
ctrls.count = 1;
|
|
|
|
/* set ctrl*/
|
|
ctrl.value = value;
|
|
ctrl.id = id ;
|
|
|
|
if (ioctl(s->fd, VIDIOC_S_EXT_CTRLS, &ctrls) < 0)
|
|
av_log(s->avctx, AV_LOG_WARNING, "Failed to set %s\n", name);
|
|
else
|
|
av_log(s->avctx, AV_LOG_DEBUG, "Encoder: %s = %d\n", name, value);
|
|
}
|
|
|
|
static inline int v4l2_get_ext_ctrl(V4L2m2mContext *s, unsigned int id, signed int *value, const char *name)
|
|
{
|
|
struct v4l2_ext_controls ctrls = { { 0 } };
|
|
struct v4l2_ext_control ctrl = { 0 };
|
|
int ret;
|
|
|
|
/* set ctrls */
|
|
ctrls.ctrl_class = V4L2_CTRL_CLASS_MPEG;
|
|
ctrls.controls = &ctrl;
|
|
ctrls.count = 1;
|
|
|
|
/* set ctrl*/
|
|
ctrl.id = id ;
|
|
|
|
ret = ioctl(s->fd, VIDIOC_G_EXT_CTRLS, &ctrls);
|
|
if (ret < 0) {
|
|
av_log(s->avctx, AV_LOG_WARNING, "Failed to set %s\n", name);
|
|
return ret;
|
|
}
|
|
|
|
*value = ctrl.value;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned int v4l2_h264_profile_from_ff(int p)
|
|
{
|
|
static const struct h264_profile {
|
|
unsigned int ffmpeg_val;
|
|
unsigned int v4l2_val;
|
|
} profile[] = {
|
|
{ FF_PROFILE_H264_CONSTRAINED_BASELINE, MPEG_VIDEO(H264_PROFILE_CONSTRAINED_BASELINE) },
|
|
{ FF_PROFILE_H264_HIGH_444_PREDICTIVE, MPEG_VIDEO(H264_PROFILE_HIGH_444_PREDICTIVE) },
|
|
{ FF_PROFILE_H264_HIGH_422_INTRA, MPEG_VIDEO(H264_PROFILE_HIGH_422_INTRA) },
|
|
{ FF_PROFILE_H264_HIGH_444_INTRA, MPEG_VIDEO(H264_PROFILE_HIGH_444_INTRA) },
|
|
{ FF_PROFILE_H264_HIGH_10_INTRA, MPEG_VIDEO(H264_PROFILE_HIGH_10_INTRA) },
|
|
{ FF_PROFILE_H264_HIGH_422, MPEG_VIDEO(H264_PROFILE_HIGH_422) },
|
|
{ FF_PROFILE_H264_BASELINE, MPEG_VIDEO(H264_PROFILE_BASELINE) },
|
|
{ FF_PROFILE_H264_EXTENDED, MPEG_VIDEO(H264_PROFILE_EXTENDED) },
|
|
{ FF_PROFILE_H264_HIGH_10, MPEG_VIDEO(H264_PROFILE_HIGH_10) },
|
|
{ FF_PROFILE_H264_MAIN, MPEG_VIDEO(H264_PROFILE_MAIN) },
|
|
{ FF_PROFILE_H264_HIGH, MPEG_VIDEO(H264_PROFILE_HIGH) },
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(profile); i++) {
|
|
if (profile[i].ffmpeg_val == p)
|
|
return profile[i].v4l2_val;
|
|
}
|
|
return AVERROR(ENOENT);
|
|
}
|
|
|
|
static inline int v4l2_mpeg4_profile_from_ff(int p)
|
|
{
|
|
static const struct mpeg4_profile {
|
|
unsigned int ffmpeg_val;
|
|
unsigned int v4l2_val;
|
|
} profile[] = {
|
|
{ FF_PROFILE_MPEG4_ADVANCED_CODING, MPEG_VIDEO(MPEG4_PROFILE_ADVANCED_CODING_EFFICIENCY) },
|
|
{ FF_PROFILE_MPEG4_ADVANCED_SIMPLE, MPEG_VIDEO(MPEG4_PROFILE_ADVANCED_SIMPLE) },
|
|
{ FF_PROFILE_MPEG4_SIMPLE_SCALABLE, MPEG_VIDEO(MPEG4_PROFILE_SIMPLE_SCALABLE) },
|
|
{ FF_PROFILE_MPEG4_SIMPLE, MPEG_VIDEO(MPEG4_PROFILE_SIMPLE) },
|
|
{ FF_PROFILE_MPEG4_CORE, MPEG_VIDEO(MPEG4_PROFILE_CORE) },
|
|
};
|
|
int i;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(profile); i++) {
|
|
if (profile[i].ffmpeg_val == p)
|
|
return profile[i].v4l2_val;
|
|
}
|
|
return AVERROR(ENOENT);
|
|
}
|
|
|
|
static int v4l2_check_b_frame_support(V4L2m2mContext *s)
|
|
{
|
|
if (s->avctx->max_b_frames)
|
|
av_log(s->avctx, AV_LOG_WARNING, "Encoder does not support b-frames yet\n");
|
|
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(B_FRAMES), 0, "number of B-frames");
|
|
v4l2_get_ext_ctrl(s, MPEG_CID(B_FRAMES), &s->avctx->max_b_frames, "number of B-frames");
|
|
if (s->avctx->max_b_frames == 0)
|
|
return 0;
|
|
|
|
avpriv_report_missing_feature(s->avctx, "DTS/PTS calculation for V4L2 encoding");
|
|
|
|
return AVERROR_PATCHWELCOME;
|
|
}
|
|
|
|
static int v4l2_prepare_encoder(V4L2m2mContext *s)
|
|
{
|
|
AVCodecContext *avctx = s->avctx;
|
|
int qmin_cid, qmax_cid, qmin, qmax;
|
|
int ret, val;
|
|
|
|
/**
|
|
* requirements
|
|
*/
|
|
ret = v4l2_check_b_frame_support(s);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/**
|
|
* settingss
|
|
*/
|
|
if (avctx->framerate.num || avctx->framerate.den)
|
|
v4l2_set_timeperframe(s, avctx->framerate.num, avctx->framerate.den);
|
|
|
|
/* set ext ctrls */
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(HEADER_MODE), MPEG_VIDEO(HEADER_MODE_SEPARATE), "header mode");
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(BITRATE) , avctx->bit_rate, "bit rate");
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(GOP_SIZE), avctx->gop_size,"gop size");
|
|
|
|
av_log(avctx, AV_LOG_DEBUG,
|
|
"Encoder Context: id (%d), profile (%d), frame rate(%d/%d), number b-frames (%d), "
|
|
"gop size (%d), bit rate (%"PRId64"), qmin (%d), qmax (%d)\n",
|
|
avctx->codec_id, avctx->profile, avctx->framerate.num, avctx->framerate.den,
|
|
avctx->max_b_frames, avctx->gop_size, avctx->bit_rate, avctx->qmin, avctx->qmax);
|
|
|
|
switch (avctx->codec_id) {
|
|
case AV_CODEC_ID_H264:
|
|
val = v4l2_h264_profile_from_ff(avctx->profile);
|
|
if (val < 0)
|
|
av_log(avctx, AV_LOG_WARNING, "h264 profile not found\n");
|
|
else
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(H264_PROFILE), val, "h264 profile");
|
|
qmin_cid = MPEG_CID(H264_MIN_QP);
|
|
qmax_cid = MPEG_CID(H264_MAX_QP);
|
|
qmin = 0;
|
|
qmax = 51;
|
|
break;
|
|
case AV_CODEC_ID_MPEG4:
|
|
val = v4l2_mpeg4_profile_from_ff(avctx->profile);
|
|
if (val < 0)
|
|
av_log(avctx, AV_LOG_WARNING, "mpeg4 profile not found\n");
|
|
else
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(MPEG4_PROFILE), val, "mpeg4 profile");
|
|
qmin_cid = MPEG_CID(MPEG4_MIN_QP);
|
|
qmax_cid = MPEG_CID(MPEG4_MAX_QP);
|
|
if (avctx->flags & AV_CODEC_FLAG_QPEL)
|
|
v4l2_set_ext_ctrl(s, MPEG_CID(MPEG4_QPEL), 1, "qpel");
|
|
qmin = 1;
|
|
qmax = 31;
|
|
break;
|
|
case AV_CODEC_ID_H263:
|
|
qmin_cid = MPEG_CID(H263_MIN_QP);
|
|
qmax_cid = MPEG_CID(H263_MAX_QP);
|
|
qmin = 1;
|
|
qmax = 31;
|
|
break;
|
|
case AV_CODEC_ID_VP8:
|
|
qmin_cid = MPEG_CID(VPX_MIN_QP);
|
|
qmax_cid = MPEG_CID(VPX_MAX_QP);
|
|
qmin = 0;
|
|
qmax = 127;
|
|
break;
|
|
case AV_CODEC_ID_VP9:
|
|
qmin_cid = MPEG_CID(VPX_MIN_QP);
|
|
qmax_cid = MPEG_CID(VPX_MAX_QP);
|
|
qmin = 0;
|
|
qmax = 255;
|
|
break;
|
|
default:
|
|
return 0;
|
|
}
|
|
|
|
if (qmin != avctx->qmin || qmax != avctx->qmax)
|
|
av_log(avctx, AV_LOG_WARNING, "Encoder adjusted: qmin (%d), qmax (%d)\n", qmin, qmax);
|
|
|
|
v4l2_set_ext_ctrl(s, qmin_cid, qmin, "minimum video quantizer scale");
|
|
v4l2_set_ext_ctrl(s, qmax_cid, qmax, "maximum video quantizer scale");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int v4l2_send_frame(AVCodecContext *avctx, const AVFrame *frame)
|
|
{
|
|
V4L2m2mContext *s = ((V4L2m2mPriv*)avctx->priv_data)->context;
|
|
V4L2Context *const output = &s->output;
|
|
|
|
return ff_v4l2_context_enqueue_frame(output, frame);
|
|
}
|
|
|
|
static int v4l2_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
|
|
{
|
|
V4L2m2mContext *s = ((V4L2m2mPriv*)avctx->priv_data)->context;
|
|
V4L2Context *const capture = &s->capture;
|
|
V4L2Context *const output = &s->output;
|
|
int ret;
|
|
|
|
if (s->draining)
|
|
goto dequeue;
|
|
|
|
if (!output->streamon) {
|
|
ret = ff_v4l2_context_set_status(output, VIDIOC_STREAMON);
|
|
if (ret) {
|
|
av_log(avctx, AV_LOG_ERROR, "VIDIOC_STREAMOFF failed on output context\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (!capture->streamon) {
|
|
ret = ff_v4l2_context_set_status(capture, VIDIOC_STREAMON);
|
|
if (ret) {
|
|
av_log(avctx, AV_LOG_ERROR, "VIDIOC_STREAMON failed on capture context\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
dequeue:
|
|
return ff_v4l2_context_dequeue_packet(capture, avpkt);
|
|
}
|
|
|
|
static av_cold int v4l2_encode_init(AVCodecContext *avctx)
|
|
{
|
|
V4L2Context *capture, *output;
|
|
V4L2m2mContext *s;
|
|
int ret;
|
|
|
|
ret = ff_v4l2_m2m_create_context(avctx, &s);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
capture = &s->capture;
|
|
output = &s->output;
|
|
|
|
/* common settings output/capture */
|
|
output->height = capture->height = avctx->height;
|
|
output->width = capture->width = avctx->width;
|
|
|
|
/* output context */
|
|
output->av_codec_id = AV_CODEC_ID_RAWVIDEO;
|
|
output->av_pix_fmt = avctx->pix_fmt;
|
|
|
|
/* capture context */
|
|
capture->av_codec_id = avctx->codec_id;
|
|
capture->av_pix_fmt = AV_PIX_FMT_NONE;
|
|
|
|
ret = ff_v4l2_m2m_codec_init(avctx);
|
|
if (ret) {
|
|
av_log(avctx, AV_LOG_ERROR, "can't configure encoder\n");
|
|
return ret;
|
|
}
|
|
|
|
return v4l2_prepare_encoder(s);
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(V4L2m2mPriv, x)
|
|
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
|
|
|
|
static const AVOption options[] = {
|
|
V4L_M2M_DEFAULT_OPTS,
|
|
{ "num_capture_buffers", "Number of buffers in the capture context",
|
|
OFFSET(num_capture_buffers), AV_OPT_TYPE_INT, {.i64 = 4 }, 4, INT_MAX, FLAGS },
|
|
{ NULL },
|
|
};
|
|
|
|
#define M2MENC(NAME, LONGNAME, CODEC) \
|
|
static const AVClass v4l2_m2m_ ## NAME ## _enc_class = {\
|
|
.class_name = #NAME "_v4l2_m2m_encoder",\
|
|
.item_name = av_default_item_name,\
|
|
.option = options,\
|
|
.version = LIBAVUTIL_VERSION_INT,\
|
|
};\
|
|
\
|
|
AVCodec ff_ ## NAME ## _v4l2m2m_encoder = { \
|
|
.name = #NAME "_v4l2m2m" ,\
|
|
.long_name = NULL_IF_CONFIG_SMALL("V4L2 mem2mem " LONGNAME " encoder wrapper"),\
|
|
.type = AVMEDIA_TYPE_VIDEO,\
|
|
.id = CODEC ,\
|
|
.priv_data_size = sizeof(V4L2m2mPriv),\
|
|
.priv_class = &v4l2_m2m_ ## NAME ##_enc_class,\
|
|
.init = v4l2_encode_init,\
|
|
.send_frame = v4l2_send_frame,\
|
|
.receive_packet = v4l2_receive_packet,\
|
|
.close = ff_v4l2_m2m_codec_end,\
|
|
.capabilities = AV_CODEC_CAP_HARDWARE | AV_CODEC_CAP_DELAY, \
|
|
.wrapper_name = "v4l2m2m", \
|
|
};
|
|
|
|
M2MENC(mpeg4,"MPEG4", AV_CODEC_ID_MPEG4);
|
|
M2MENC(h263, "H.263", AV_CODEC_ID_H263);
|
|
M2MENC(h264, "H.264", AV_CODEC_ID_H264);
|
|
M2MENC(hevc, "HEVC", AV_CODEC_ID_HEVC);
|
|
M2MENC(vp8, "VP8", AV_CODEC_ID_VP8);
|