[libav.git] / libavcodec / libopenh264enc.c

/*
 * OpenH264 video encoder
 * Copyright (C) 2014 Martin Storsjo
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <wels/codec_api.h>
#include <wels/codec_ver.h>

#include "libavutil/attributes.h"
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"

#include "avcodec.h"
#include "internal.h"

typedef struct SVCContext {
    const AVClass *av_class;
    ISVCEncoder *encoder;
    int slice_mode;
    int loopfilter;
    char *profile;
    int max_nal_size;
    int skip_frames;
} SVCContext;

#define OPENH264_VER_AT_LEAST(maj, min) \
    ((OPENH264_MAJOR  > (maj)) || \
     (OPENH264_MAJOR == (maj) && OPENH264_MINOR >= (min)))

#define OFFSET(x) offsetof(SVCContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
    { "slice_mode", "Slice mode", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_AUTO_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE, "slice_mode" },
    { "fixed", "A fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" },
    { "rowmb", "One slice per row of macroblocks", 0, AV_OPT_TYPE_CONST, { .i64 = SM_ROWMB_SLICE }, 0, 0, VE, "slice_mode" },
    { "auto", "Automatic number of slices according to number of threads", 0, AV_OPT_TYPE_CONST, { .i64 = SM_AUTO_SLICE }, 0, 0, VE, "slice_mode" },
    { "dyn", "Dynamic slicing", 0, AV_OPT_TYPE_CONST, { .i64 = SM_DYN_SLICE }, 0, 0, VE, "slice_mode" },
    { "loopfilter", "Enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
    { "profile", "Set profile restrictions", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
    { "max_nal_size", "Set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { 0 }, 0, INT_MAX, VE },
    { "allow_skip_frames", "Allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
    { NULL }
};

static const AVClass class = {
    "libopenh264enc", av_default_item_name, options, LIBAVUTIL_VERSION_INT
};

// Convert libopenh264 log level to equivalent libav log level.
static int libopenh264_to_libav_log_level(int libopenh264_log_level)
{
    if      (libopenh264_log_level >= WELS_LOG_DETAIL)  return AV_LOG_TRACE;
    else if (libopenh264_log_level >= WELS_LOG_DEBUG)   return AV_LOG_DEBUG;
    else if (libopenh264_log_level >= WELS_LOG_INFO)    return AV_LOG_VERBOSE;
    else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING;
    else if (libopenh264_log_level >= WELS_LOG_ERROR)   return AV_LOG_ERROR;
    else                                                return AV_LOG_QUIET;
}

// This function will be provided to the libopenh264 library.  The function will be called
// when libopenh264 wants to log a message (error, warning, info, etc.).  The signature for
// this function (defined in .../codec/api/svc/codec_api.h) is:
//
//        typedef void (*WelsTraceCallback) (void* ctx, int level, const char* string);

static void libopenh264_trace_callback(void *ctx, int level, char const *msg)
{
    // The message will be logged only if the requested EQUIVALENT libav log level is
    // less than or equal to the current libav log level.
    int equiv_libav_log_level = libopenh264_to_libav_log_level(level);
    av_log(ctx, equiv_libav_log_level, "%s\n", msg);
}

static av_cold int svc_encode_close(AVCodecContext *avctx)
{
    SVCContext *s = avctx->priv_data;

    if (s->encoder)
        WelsDestroySVCEncoder(s->encoder);
    return 0;
}

static av_cold int svc_encode_init(AVCodecContext *avctx)
{
    SVCContext *s = avctx->priv_data;
    SEncParamExt param = { 0 };
    int err = AVERROR_UNKNOWN;
    int log_level;
    WelsTraceCallback callback_function;

    // Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion
    // function (for functions returning larger structs), thus skip the check in those
    // configurations.
#if !defined(_WIN32) || !defined(__GNUC__) || !ARCH_X86_32 || AV_GCC_VERSION_AT_LEAST(4, 7)
    OpenH264Version libver = WelsGetCodecVersion();
    if (memcmp(&libver, &g_stCodecVersion, sizeof(libver))) {
        av_log(avctx, AV_LOG_ERROR, "Incorrect library version loaded\n");
        return AVERROR(EINVAL);
    }
#endif

    if (WelsCreateSVCEncoder(&s->encoder)) {
        av_log(avctx, AV_LOG_ERROR, "Unable to create encoder\n");
        return AVERROR_UNKNOWN;
    }

    // Pass all libopenh264 messages to our callback, to allow ourselves to filter them.
    log_level = WELS_LOG_DETAIL;
    (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level);

    // Set the logging callback function to one that uses av_log() (see implementation above).
    callback_function = (WelsTraceCallback) libopenh264_trace_callback;
    (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, (void *)&callback_function);

    // Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log().
    (*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, (void *)&avctx);

    (*s->encoder)->GetDefaultParams(s->encoder, &param);

    param.fMaxFrameRate              = avctx->time_base.den / avctx->time_base.num;
    param.iPicWidth                  = avctx->width;
    param.iPicHeight                 = avctx->height;
    param.iTargetBitrate             = avctx->bit_rate;
    param.iMaxBitrate                = FFMAX(avctx->rc_max_rate, avctx->bit_rate);
    param.iRCMode                    = RC_QUALITY_MODE;
    param.iTemporalLayerNum          = 1;
    param.iSpatialLayerNum           = 1;
    param.bEnableDenoise             = 0;
    param.bEnableBackgroundDetection = 1;
    param.bEnableAdaptiveQuant       = 1;
    param.bEnableFrameSkip           = s->skip_frames;
    param.bEnableLongTermReference   = 0;
    param.iLtrMarkPeriod             = 30;
    param.uiIntraPeriod              = avctx->gop_size;
#if OPENH264_VER_AT_LEAST(1, 4)
    param.eSpsPpsIdStrategy          = CONSTANT_ID;
#else
    param.bEnableSpsPpsIdAddition    = 0;
#endif
    param.bPrefixNalAddingCtrl       = 0;
    param.iLoopFilterDisableIdc      = !s->loopfilter;
    param.iEntropyCodingModeFlag     = 0;
    param.iMultipleThreadIdc         = avctx->thread_count;
    if (s->profile && !strcmp(s->profile, "main"))
        param.iEntropyCodingModeFlag = 1;
    else if (!s->profile && avctx->coder_type == FF_CODER_TYPE_AC)
        param.iEntropyCodingModeFlag = 1;

    param.sSpatialLayers[0].iVideoWidth         = param.iPicWidth;
    param.sSpatialLayers[0].iVideoHeight        = param.iPicHeight;
    param.sSpatialLayers[0].fFrameRate          = param.fMaxFrameRate;
    param.sSpatialLayers[0].iSpatialBitrate     = param.iTargetBitrate;
    param.sSpatialLayers[0].iMaxSpatialBitrate  = param.iMaxBitrate;

    if ((avctx->slices > 1) && (s->max_nal_size)){
        av_log(avctx,AV_LOG_ERROR,"Invalid combination -slices %d and -max_nal_size %d.\n",avctx->slices,s->max_nal_size);
        goto fail;
    }

    if (avctx->slices > 1)
        s->slice_mode = SM_FIXEDSLCNUM_SLICE;

    if (s->max_nal_size)
        s->slice_mode = SM_DYN_SLICE;

    param.sSpatialLayers[0].sSliceCfg.uiSliceMode               = s->slice_mode;
    param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices;

    if (s->slice_mode == SM_DYN_SLICE) {
        if (s->max_nal_size){
            param.uiMaxNalSize = s->max_nal_size;
            param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
        } else {
            if (avctx->rtp_payload_size) {
                av_log(avctx,AV_LOG_DEBUG,"Using RTP Payload size for uiMaxNalSize");
                param.uiMaxNalSize = avctx->rtp_payload_size;
                param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = avctx->rtp_payload_size;
            } else {
                av_log(avctx,AV_LOG_ERROR,"Invalid -max_nal_size, specify a valid max_nal_size to use -slice_mode dyn\n");
                goto fail;
            }
        }
    }

    if ((*s->encoder)->InitializeExt(s->encoder, &param) != cmResultSuccess) {
        av_log(avctx, AV_LOG_ERROR, "Initialize failed\n");
        goto fail;
    }

    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
        SFrameBSInfo fbi = { 0 };
        int i, size = 0;
        (*s->encoder)->EncodeParameterSets(s->encoder, &fbi);
        for (i = 0; i < fbi.sLayerInfo[0].iNalCount; i++)
            size += fbi.sLayerInfo[0].pNalLengthInByte[i];
        avctx->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
        if (!avctx->extradata) {
            err = AVERROR(ENOMEM);
            goto fail;
        }
        avctx->extradata_size = size;
        memcpy(avctx->extradata, fbi.sLayerInfo[0].pBsBuf, size);
    }

    return 0;

fail:
    svc_encode_close(avctx);
    return err;
}

static int svc_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
                            const AVFrame *frame, int *got_packet)
{
    SVCContext *s = avctx->priv_data;
    SFrameBSInfo fbi = { 0 };
    int i, ret;
    int encoded;
    SSourcePicture sp = { 0 };
    int size = 0, layer, first_layer = 0;
    int layer_size[MAX_LAYER_NUM_OF_FRAME] = { 0 };

    sp.iColorFormat = videoFormatI420;
    for (i = 0; i < 3; i++) {
        sp.iStride[i] = frame->linesize[i];
        sp.pData[i]   = frame->data[i];
    }
    sp.iPicWidth  = avctx->width;
    sp.iPicHeight = avctx->height;

    encoded = (*s->encoder)->EncodeFrame(s->encoder, &sp, &fbi);
    if (encoded != cmResultSuccess) {
        av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed\n");
        return AVERROR_UNKNOWN;
    }
    if (fbi.eFrameType == videoFrameTypeSkip) {
        av_log(avctx, AV_LOG_DEBUG, "frame skipped\n");
        return 0;
    }
    first_layer = 0;
    // Normal frames are returned with one single layer, while IDR
    // frames have two layers, where the first layer contains the SPS/PPS.
    // If using global headers, don't include the SPS/PPS in the returned
    // packet - thus, only return one layer.
    if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
        first_layer = fbi.iLayerNum - 1;

    for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
        for (i = 0; i < fbi.sLayerInfo[layer].iNalCount; i++)
            layer_size[layer] += fbi.sLayerInfo[layer].pNalLengthInByte[i];
        size += layer_size[layer];
    }
    av_log(avctx, AV_LOG_DEBUG, "%d slices\n", fbi.sLayerInfo[fbi.iLayerNum - 1].iNalCount);

    if ((ret = ff_alloc_packet(avpkt, size))) {
        av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
        return ret;
    }
    size = 0;
    for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
        memcpy(avpkt->data + size, fbi.sLayerInfo[layer].pBsBuf, layer_size[layer]);
        size += layer_size[layer];
    }
    avpkt->pts = frame->pts;
    if (fbi.eFrameType == videoFrameTypeIDR)
        avpkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;
    return 0;
}

AVCodec ff_libopenh264_encoder = {
    .name           = "libopenh264",
    .long_name      = NULL_IF_CONFIG_SMALL("OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_H264,
    .priv_data_size = sizeof(SVCContext),
    .init           = svc_encode_init,
    .encode2        = svc_encode_frame,
    .close          = svc_encode_close,
    .capabilities   = AV_CODEC_CAP_AUTO_THREADS,
    .pix_fmts       = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
                                                    AV_PIX_FMT_NONE },
    .priv_class     = &class,
};
Commit	Line	Data
8a3d9ca6 MS	1	/*
	2	* OpenH264 video encoder
	3	* Copyright (C) 2014 Martin Storsjo
	4	*
	5	* This file is part of Libav.
	6	*
	7	* Libav is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU Lesser General Public
	9	* License as published by the Free Software Foundation; either
	10	* version 2.1 of the License, or (at your option) any later version.
	11	*
	12	* Libav is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* Lesser General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU Lesser General Public
	18	* License along with Libav; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	20	*/
	21
	22	#include <wels/codec_api.h>
	23	#include <wels/codec_ver.h>
	24
	25	#include "libavutil/attributes.h"
	26	#include "libavutil/common.h"
	27	#include "libavutil/opt.h"
	28	#include "libavutil/intreadwrite.h"
	29	#include "libavutil/mathematics.h"
	30
	31	#include "avcodec.h"
	32	#include "internal.h"
	33
	34	typedef struct SVCContext {
	35	const AVClass *av_class;
	36	ISVCEncoder *encoder;
	37	int slice_mode;
	38	int loopfilter;
	39	char *profile;
c3e5c47b	40	int max_nal_size;
9e14a992	41	int skip_frames;
8a3d9ca6 MS	42	} SVCContext;
8a3d9ca6 MS	43
25c29d32 MS	44	#define OPENH264_VER_AT_LEAST(maj, min) \
	45	((OPENH264_MAJOR > (maj)) \|\| \
	46	(OPENH264_MAJOR == (maj) && OPENH264_MINOR >= (min)))
	47
8a3d9ca6 MS	48	#define OFFSET(x) offsetof(SVCContext, x)
	49	#define VE AV_OPT_FLAG_VIDEO_PARAM \| AV_OPT_FLAG_ENCODING_PARAM
	50	static const AVOption options[] = {
	51	{ "slice_mode", "Slice mode", OFFSET(slice_mode), AV_OPT_TYPE_INT, { .i64 = SM_AUTO_SLICE }, SM_SINGLE_SLICE, SM_RESERVED, VE, "slice_mode" },
	52	{ "fixed", "A fixed number of slices", 0, AV_OPT_TYPE_CONST, { .i64 = SM_FIXEDSLCNUM_SLICE }, 0, 0, VE, "slice_mode" },
	53	{ "rowmb", "One slice per row of macroblocks", 0, AV_OPT_TYPE_CONST, { .i64 = SM_ROWMB_SLICE }, 0, 0, VE, "slice_mode" },
	54	{ "auto", "Automatic number of slices according to number of threads", 0, AV_OPT_TYPE_CONST, { .i64 = SM_AUTO_SLICE }, 0, 0, VE, "slice_mode" },
c3e5c47b	55	{ "dyn", "Dynamic slicing", 0, AV_OPT_TYPE_CONST, { .i64 = SM_DYN_SLICE }, 0, 0, VE, "slice_mode" },
8a3d9ca6 MS	56	{ "loopfilter", "Enable loop filter", OFFSET(loopfilter), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
8a3d9ca6 MS	57	{ "profile", "Set profile restrictions", OFFSET(profile), AV_OPT_TYPE_STRING, { 0 }, 0, 0, VE },
c3e5c47b	58	{ "max_nal_size", "Set maximum NAL size in bytes", OFFSET(max_nal_size), AV_OPT_TYPE_INT, { 0 }, 0, INT_MAX, VE },
9e14a992	59	{ "allow_skip_frames", "Allow skipping frames to hit the target bitrate", OFFSET(skip_frames), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
8a3d9ca6 MS	60	{ NULL }
	61	};
	62
	63	static const AVClass class = {
	64	"libopenh264enc", av_default_item_name, options, LIBAVUTIL_VERSION_INT
	65	};
	66
1a4c5fe5 GW	67	// Convert libopenh264 log level to equivalent libav log level.
	68	static int libopenh264_to_libav_log_level(int libopenh264_log_level)
	69	{
	70	if (libopenh264_log_level >= WELS_LOG_DETAIL) return AV_LOG_TRACE;
	71	else if (libopenh264_log_level >= WELS_LOG_DEBUG) return AV_LOG_DEBUG;
	72	else if (libopenh264_log_level >= WELS_LOG_INFO) return AV_LOG_VERBOSE;
	73	else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING;
	74	else if (libopenh264_log_level >= WELS_LOG_ERROR) return AV_LOG_ERROR;
	75	else return AV_LOG_QUIET;
	76	}
	77
	78	// This function will be provided to the libopenh264 library. The function will be called
	79	// when libopenh264 wants to log a message (error, warning, info, etc.). The signature for
	80	// this function (defined in .../codec/api/svc/codec_api.h) is:
	81	//
	82	// typedef void (WelsTraceCallback) (void ctx, int level, const char* string);
	83
	84	static void libopenh264_trace_callback(void ctx, int level, char const msg)
	85	{
	86	// The message will be logged only if the requested EQUIVALENT libav log level is
	87	// less than or equal to the current libav log level.
	88	int equiv_libav_log_level = libopenh264_to_libav_log_level(level);
	89	av_log(ctx, equiv_libav_log_level, "%s\n", msg);
	90	}
	91
8a3d9ca6 MS	92	static av_cold int svc_encode_close(AVCodecContext *avctx)
	93	{
	94	SVCContext *s = avctx->priv_data;
	95
	96	if (s->encoder)
	97	WelsDestroySVCEncoder(s->encoder);
	98	return 0;
	99	}
	100
	101	static av_cold int svc_encode_init(AVCodecContext *avctx)
	102	{
	103	SVCContext *s = avctx->priv_data;
	104	SEncParamExt param = { 0 };
	105	int err = AVERROR_UNKNOWN;
1a4c5fe5 GW	106	int log_level;
1a4c5fe5 GW	107	WelsTraceCallback callback_function;
8a3d9ca6 MS	108
	109	// Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion
	110	// function (for functions returning larger structs), thus skip the check in those
	111	// configurations.
	112	#if !defined(_WIN32) \|\| !defined(__GNUC__) \|\| !ARCH_X86_32 \|\| AV_GCC_VERSION_AT_LEAST(4, 7)
440119b1	113	OpenH264Version libver = WelsGetCodecVersion();
8a3d9ca6 MS	114	if (memcmp(&libver, &g_stCodecVersion, sizeof(libver))) {
	115	av_log(avctx, AV_LOG_ERROR, "Incorrect library version loaded\n");
	116	return AVERROR(EINVAL);
	117	}
	118	#endif
	119
	120	if (WelsCreateSVCEncoder(&s->encoder)) {
	121	av_log(avctx, AV_LOG_ERROR, "Unable to create encoder\n");
	122	return AVERROR_UNKNOWN;
	123	}
	124
1a4c5fe5 GW	125	// Pass all libopenh264 messages to our callback, to allow ourselves to filter them.
	126	log_level = WELS_LOG_DETAIL;
	127	(*s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_LEVEL, &log_level);
	128
	129	// Set the logging callback function to one that uses av_log() (see implementation above).
	130	callback_function = (WelsTraceCallback) libopenh264_trace_callback;
	131	(s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK, (void )&callback_function);
	132
	133	// Set the AVCodecContext as the libopenh264 callback context so that it can be passed to av_log().
	134	(s->encoder)->SetOption(s->encoder, ENCODER_OPTION_TRACE_CALLBACK_CONTEXT, (void )&avctx);
	135
8a3d9ca6 MS	136	(*s->encoder)->GetDefaultParams(s->encoder, &param);
	137
	138	param.fMaxFrameRate = avctx->time_base.den / avctx->time_base.num;
	139	param.iPicWidth = avctx->width;
	140	param.iPicHeight = avctx->height;
	141	param.iTargetBitrate = avctx->bit_rate;
	142	param.iMaxBitrate = FFMAX(avctx->rc_max_rate, avctx->bit_rate);
	143	param.iRCMode = RC_QUALITY_MODE;
	144	param.iTemporalLayerNum = 1;
	145	param.iSpatialLayerNum = 1;
	146	param.bEnableDenoise = 0;
	147	param.bEnableBackgroundDetection = 1;
	148	param.bEnableAdaptiveQuant = 1;
9e14a992	149	param.bEnableFrameSkip = s->skip_frames;
8a3d9ca6 MS	150	param.bEnableLongTermReference = 0;
	151	param.iLtrMarkPeriod = 30;
	152	param.uiIntraPeriod = avctx->gop_size;
25c29d32 MS	153	#if OPENH264_VER_AT_LEAST(1, 4)
	154	param.eSpsPpsIdStrategy = CONSTANT_ID;
	155	#else
8a3d9ca6	156	param.bEnableSpsPpsIdAddition = 0;
25c29d32	157	#endif
8a3d9ca6 MS	158	param.bPrefixNalAddingCtrl = 0;
	159	param.iLoopFilterDisableIdc = !s->loopfilter;
	160	param.iEntropyCodingModeFlag = 0;
	161	param.iMultipleThreadIdc = avctx->thread_count;
	162	if (s->profile && !strcmp(s->profile, "main"))
	163	param.iEntropyCodingModeFlag = 1;
	164	else if (!s->profile && avctx->coder_type == FF_CODER_TYPE_AC)
	165	param.iEntropyCodingModeFlag = 1;
	166
	167	param.sSpatialLayers[0].iVideoWidth = param.iPicWidth;
	168	param.sSpatialLayers[0].iVideoHeight = param.iPicHeight;
	169	param.sSpatialLayers[0].fFrameRate = param.fMaxFrameRate;
	170	param.sSpatialLayers[0].iSpatialBitrate = param.iTargetBitrate;
	171	param.sSpatialLayers[0].iMaxSpatialBitrate = param.iMaxBitrate;
	172
c3e5c47b MG	173	if ((avctx->slices > 1) && (s->max_nal_size)){
	174	av_log(avctx,AV_LOG_ERROR,"Invalid combination -slices %d and -max_nal_size %d.\n",avctx->slices,s->max_nal_size);
	175	goto fail;
	176	}
	177
8a3d9ca6 MS	178	if (avctx->slices > 1)
8a3d9ca6 MS	179	s->slice_mode = SM_FIXEDSLCNUM_SLICE;
c3e5c47b MG	180
	181	if (s->max_nal_size)
	182	s->slice_mode = SM_DYN_SLICE;
	183
8a3d9ca6 MS	184	param.sSpatialLayers[0].sSliceCfg.uiSliceMode = s->slice_mode;
	185	param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceNum = avctx->slices;
	186
c3e5c47b MG	187	if (s->slice_mode == SM_DYN_SLICE) {
	188	if (s->max_nal_size){
	189	param.uiMaxNalSize = s->max_nal_size;
	190	param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = s->max_nal_size;
	191	} else {
	192	if (avctx->rtp_payload_size) {
	193	av_log(avctx,AV_LOG_DEBUG,"Using RTP Payload size for uiMaxNalSize");
	194	param.uiMaxNalSize = avctx->rtp_payload_size;
	195	param.sSpatialLayers[0].sSliceCfg.sSliceArgument.uiSliceSizeConstraint = avctx->rtp_payload_size;
	196	} else {
	197	av_log(avctx,AV_LOG_ERROR,"Invalid -max_nal_size, specify a valid max_nal_size to use -slice_mode dyn\n");
	198	goto fail;
	199	}
	200	}
	201	}
	202
8a3d9ca6 MS	203	if ((*s->encoder)->InitializeExt(s->encoder, &param) != cmResultSuccess) {
	204	av_log(avctx, AV_LOG_ERROR, "Initialize failed\n");
	205	goto fail;
	206	}
	207
7c6eb0a1	208	if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
8a3d9ca6 MS	209	SFrameBSInfo fbi = { 0 };
	210	int i, size = 0;
	211	(*s->encoder)->EncodeParameterSets(s->encoder, &fbi);
	212	for (i = 0; i < fbi.sLayerInfo[0].iNalCount; i++)
	213	size += fbi.sLayerInfo[0].pNalLengthInByte[i];
059a9348	214	avctx->extradata = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
8a3d9ca6 MS	215	if (!avctx->extradata) {
	216	err = AVERROR(ENOMEM);
	217	goto fail;
	218	}
	219	avctx->extradata_size = size;
	220	memcpy(avctx->extradata, fbi.sLayerInfo[0].pBsBuf, size);
	221	}
	222
	223	return 0;
	224
	225	fail:
	226	svc_encode_close(avctx);
	227	return err;
	228	}
	229
	230	static int svc_encode_frame(AVCodecContext avctx, AVPacket avpkt,
	231	const AVFrame frame, int got_packet)
	232	{
	233	SVCContext *s = avctx->priv_data;
	234	SFrameBSInfo fbi = { 0 };
	235	int i, ret;
	236	int encoded;
	237	SSourcePicture sp = { 0 };
	238	int size = 0, layer, first_layer = 0;
	239	int layer_size[MAX_LAYER_NUM_OF_FRAME] = { 0 };
	240
	241	sp.iColorFormat = videoFormatI420;
	242	for (i = 0; i < 3; i++) {
	243	sp.iStride[i] = frame->linesize[i];
	244	sp.pData[i] = frame->data[i];
	245	}
	246	sp.iPicWidth = avctx->width;
	247	sp.iPicHeight = avctx->height;
	248
	249	encoded = (*s->encoder)->EncodeFrame(s->encoder, &sp, &fbi);
	250	if (encoded != cmResultSuccess) {
	251	av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed\n");
	252	return AVERROR_UNKNOWN;
	253	}
	254	if (fbi.eFrameType == videoFrameTypeSkip) {
	255	av_log(avctx, AV_LOG_DEBUG, "frame skipped\n");
	256	return 0;
	257	}
	258	first_layer = 0;
3852e2c9	259	// Normal frames are returned with one single layer, while IDR
8a3d9ca6 MS	260	// frames have two layers, where the first layer contains the SPS/PPS.
	261	// If using global headers, don't include the SPS/PPS in the returned
	262	// packet - thus, only return one layer.
7c6eb0a1	263	if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER)
8a3d9ca6 MS	264	first_layer = fbi.iLayerNum - 1;
	265
	266	for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
	267	for (i = 0; i < fbi.sLayerInfo[layer].iNalCount; i++)
	268	layer_size[layer] += fbi.sLayerInfo[layer].pNalLengthInByte[i];
	269	size += layer_size[layer];
	270	}
6996fd20	271	av_log(avctx, AV_LOG_DEBUG, "%d slices\n", fbi.sLayerInfo[fbi.iLayerNum - 1].iNalCount);
8a3d9ca6 MS	272
	273	if ((ret = ff_alloc_packet(avpkt, size))) {
	274	av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
	275	return ret;
	276	}
	277	size = 0;
	278	for (layer = first_layer; layer < fbi.iLayerNum; layer++) {
	279	memcpy(avpkt->data + size, fbi.sLayerInfo[layer].pBsBuf, layer_size[layer]);
	280	size += layer_size[layer];
	281	}
	282	avpkt->pts = frame->pts;
	283	if (fbi.eFrameType == videoFrameTypeIDR)
	284	avpkt->flags \|= AV_PKT_FLAG_KEY;
	285	*got_packet = 1;
	286	return 0;
	287	}
	288
	289	AVCodec ff_libopenh264_encoder = {
	290	.name = "libopenh264",
3852e2c9	291	.long_name = NULL_IF_CONFIG_SMALL("OpenH264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
8a3d9ca6 MS	292	.type = AVMEDIA_TYPE_VIDEO,
	293	.id = AV_CODEC_ID_H264,
	294	.priv_data_size = sizeof(SVCContext),
	295	.init = svc_encode_init,
	296	.encode2 = svc_encode_frame,
	297	.close = svc_encode_close,
def97856	298	.capabilities = AV_CODEC_CAP_AUTO_THREADS,
58a840e2 MS	299	.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P,
58a840e2 MS	300	AV_PIX_FMT_NONE },
8a3d9ca6 MS	301	.priv_class = &class,
8a3d9ca6 MS	302	};