[deb_ffmpeg.git] / ffmpeg / libavcodec / libutvideoenc.cpp

/*
 * Copyright (c) 2012 Derek Buitenhuis
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public
 * License as published by the Free Software Foundation;
 * version 2 of the License.
 *
 * 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
 * General Public License for more details.
 *
 * You should have received a copy of the GNU 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
 */

/**
 * @file
 * Known FOURCCs:
 *     'ULY0' (YCbCr 4:2:0), 'ULY2' (YCbCr 4:2:2), 'ULRG' (RGB), 'ULRA' (RGBA),
 *     'ULH0' (YCbCr 4:2:0 BT.709), 'ULH2' (YCbCr 4:2:2 BT.709)
 */

extern "C" {
#include "libavutil/avassert.h"
#include "avcodec.h"
#include "internal.h"
}

#include "libutvideo.h"
#include "put_bits.h"

static av_cold int utvideo_encode_init(AVCodecContext *avctx)
{
    UtVideoContext *utv = (UtVideoContext *)avctx->priv_data;
    UtVideoExtra *info;
    uint32_t flags, in_format;

    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_YUV420P:
        in_format = UTVF_YV12;
        avctx->bits_per_coded_sample = 12;
        if (avctx->colorspace == AVCOL_SPC_BT709)
            avctx->codec_tag = MKTAG('U', 'L', 'H', '0');
        else
            avctx->codec_tag = MKTAG('U', 'L', 'Y', '0');
        break;
    case AV_PIX_FMT_YUYV422:
        in_format = UTVF_YUYV;
        avctx->bits_per_coded_sample = 16;
        if (avctx->colorspace == AVCOL_SPC_BT709)
            avctx->codec_tag = MKTAG('U', 'L', 'H', '2');
        else
            avctx->codec_tag = MKTAG('U', 'L', 'Y', '2');
        break;
    case AV_PIX_FMT_BGR24:
        in_format = UTVF_NFCC_BGR_BU;
        avctx->bits_per_coded_sample = 24;
        avctx->codec_tag = MKTAG('U', 'L', 'R', 'G');
        break;
    case AV_PIX_FMT_RGB32:
        in_format = UTVF_NFCC_BGRA_BU;
        avctx->bits_per_coded_sample = 32;
        avctx->codec_tag = MKTAG('U', 'L', 'R', 'A');
        break;
    default:
        return AVERROR(EINVAL);
    }

    /* Check before we alloc anything */
    if (avctx->prediction_method != 0 && avctx->prediction_method != 2) {
        av_log(avctx, AV_LOG_ERROR, "Invalid prediction method.\n");
        return AVERROR(EINVAL);
    }

    flags = ((avctx->prediction_method + 1) << 8) | (avctx->thread_count - 1);

    avctx->priv_data = utv;
    avctx->coded_frame = av_frame_alloc();

    /* Alloc extradata buffer */
    info = (UtVideoExtra *)av_malloc(sizeof(*info));

    if (!info) {
        av_log(avctx, AV_LOG_ERROR, "Could not allocate extradata buffer.\n");
        return AVERROR(ENOMEM);
    }

    /*
     * We use this buffer to hold the data that Ut Video returns,
     * since we cannot decode planes separately with it.
     */
    utv->buf_size = avpicture_get_size(avctx->pix_fmt,
                                       avctx->width, avctx->height);
    utv->buffer = (uint8_t *)av_malloc(utv->buf_size);

    if (utv->buffer == NULL) {
        av_log(avctx, AV_LOG_ERROR, "Could not allocate output buffer.\n");
        return AVERROR(ENOMEM);
    }

    /*
     * Create a Ut Video instance. Since the function wants
     * an "interface name" string, pass it the name of the lib.
     */
    utv->codec = CCodec::CreateInstance(UNFCC(avctx->codec_tag), "libavcodec");

    /* Initialize encoder */
    utv->codec->EncodeBegin(in_format, avctx->width, avctx->height,
                            CBGROSSWIDTH_WINDOWS);

    /* Get extradata from encoder */
    avctx->extradata_size = utv->codec->EncodeGetExtraDataSize();
    utv->codec->EncodeGetExtraData(info, avctx->extradata_size, in_format,
                                   avctx->width, avctx->height,
                                   CBGROSSWIDTH_WINDOWS);
    avctx->extradata = (uint8_t *)info;

    /* Set flags */
    utv->codec->SetState(&flags, sizeof(flags));

    return 0;
}

static int utvideo_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                                const AVFrame *pic, int *got_packet)
{
    UtVideoContext *utv = (UtVideoContext *)avctx->priv_data;
    int w = avctx->width, h = avctx->height;
    int ret, rgb_size, i;
    bool keyframe;
    uint8_t *y, *u, *v;
    uint8_t *dst;

    /* Alloc buffer */
    if ((ret = ff_alloc_packet2(avctx, pkt, utv->buf_size)) < 0)
        return ret;

    dst = pkt->data;

    /* Move input if needed data into Ut Video friendly buffer */
    switch (avctx->pix_fmt) {
    case AV_PIX_FMT_YUV420P:
        y = utv->buffer;
        u = y + w * h;
        v = u + w * h / 4;
        for (i = 0; i < h; i++) {
            memcpy(y, pic->data[0] + i * pic->linesize[0], w);
            y += w;
        }
        for (i = 0; i < h / 2; i++) {
            memcpy(u, pic->data[2] + i * pic->linesize[2], w >> 1);
            memcpy(v, pic->data[1] + i * pic->linesize[1], w >> 1);
            u += w >> 1;
            v += w >> 1;
        }
        break;
    case AV_PIX_FMT_YUYV422:
        for (i = 0; i < h; i++)
            memcpy(utv->buffer + i * (w << 1),
                   pic->data[0] + i * pic->linesize[0], w << 1);
        break;
    case AV_PIX_FMT_BGR24:
    case AV_PIX_FMT_RGB32:
        /* Ut Video takes bottom-up BGR */
        rgb_size = avctx->pix_fmt == AV_PIX_FMT_BGR24 ? 3 : 4;
        for (i = 0; i < h; i++)
            memcpy(utv->buffer + (h - i - 1) * w * rgb_size,
                   pic->data[0] + i * pic->linesize[0],
                   w * rgb_size);
        break;
    default:
        return AVERROR(EINVAL);
    }

    /* Encode frame */
    pkt->size = utv->codec->EncodeFrame(dst, &keyframe, utv->buffer);

    if (!pkt->size) {
        av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed!\n");
        return AVERROR_INVALIDDATA;
    }

    /*
     * Ut Video is intra-only and every frame is a keyframe,
     * and the API always returns true. In case something
     * durastic changes in the future, such as inter support,
     * assert that this is true.
     */
    av_assert2(keyframe == true);
    avctx->coded_frame->key_frame = 1;
    avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;

    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;
    return 0;
}

static av_cold int utvideo_encode_close(AVCodecContext *avctx)
{
    UtVideoContext *utv = (UtVideoContext *)avctx->priv_data;

    av_freep(&avctx->coded_frame);
    av_freep(&avctx->extradata);
    av_freep(&utv->buffer);

    utv->codec->EncodeEnd();
    CCodec::DeleteInstance(utv->codec);

    return 0;
}

AVCodec ff_libutvideo_encoder = {
    "libutvideo",
    NULL_IF_CONFIG_SMALL("Ut Video"),
    AVMEDIA_TYPE_VIDEO,
    AV_CODEC_ID_UTVIDEO,
    CODEC_CAP_AUTO_THREADS | CODEC_CAP_LOSSLESS,
    NULL, /* supported_framerates */
    (const enum AVPixelFormat[]) {
        AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUYV422, AV_PIX_FMT_BGR24,
        AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
    },
    NULL, /* supported_samplerates */
    NULL, /* sample_fmts */
    NULL, /* channel_layouts */
    0,    /* max_lowres */
    NULL, /* priv_class */
    NULL, /* profiles */
    sizeof(UtVideoContext),
    NULL, /* next */
    NULL, /* init_thread_copy */
    NULL, /* update_thread_context */
    NULL, /* defaults */
    NULL, /* init_static_data */
    utvideo_encode_init,
    NULL, /* encode */
    utvideo_encode_frame,
    NULL, /* decode */
    utvideo_encode_close,
    NULL, /* flush */
};
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2012 Derek Buitenhuis
	3	*
	4	* This file is part of FFmpeg.
	5	*
	6	* FFmpeg is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public
	8	* License as published by the Free Software Foundation;
	9	* version 2 of the License.
	10	*
	11	* FFmpeg is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public
	17	* License along with FFmpeg; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	/**
	22	* @file
	23	* Known FOURCCs:
	24	* 'ULY0' (YCbCr 4:2:0), 'ULY2' (YCbCr 4:2:2), 'ULRG' (RGB), 'ULRA' (RGBA),
	25	* 'ULH0' (YCbCr 4:2:0 BT.709), 'ULH2' (YCbCr 4:2:2 BT.709)
	26	*/
	27
	28	extern "C" {
	29	#include "libavutil/avassert.h"
	30	#include "avcodec.h"
	31	#include "internal.h"
	32	}
	33
	34	#include "libutvideo.h"
	35	#include "put_bits.h"
	36
	37	static av_cold int utvideo_encode_init(AVCodecContext *avctx)
	38	{
	39	UtVideoContext utv = (UtVideoContext )avctx->priv_data;
	40	UtVideoExtra *info;
	41	uint32_t flags, in_format;
	42
	43	switch (avctx->pix_fmt) {
	44	case AV_PIX_FMT_YUV420P:
	45	in_format = UTVF_YV12;
	46	avctx->bits_per_coded_sample = 12;
	47	if (avctx->colorspace == AVCOL_SPC_BT709)
	48	avctx->codec_tag = MKTAG('U', 'L', 'H', '0');
	49	else
	50	avctx->codec_tag = MKTAG('U', 'L', 'Y', '0');
	51	break;
	52	case AV_PIX_FMT_YUYV422:
	53	in_format = UTVF_YUYV;
	54	avctx->bits_per_coded_sample = 16;
	55	if (avctx->colorspace == AVCOL_SPC_BT709)
	56	avctx->codec_tag = MKTAG('U', 'L', 'H', '2');
	57	else
	58	avctx->codec_tag = MKTAG('U', 'L', 'Y', '2');
	59	break;
	60	case AV_PIX_FMT_BGR24:
	61	in_format = UTVF_NFCC_BGR_BU;
	62	avctx->bits_per_coded_sample = 24;
	63	avctx->codec_tag = MKTAG('U', 'L', 'R', 'G');
	64	break;
65	case AV_PIX_FMT_RGB32:
66	in_format = UTVF_NFCC_BGRA_BU;
67	avctx->bits_per_coded_sample = 32;
68	avctx->codec_tag = MKTAG('U', 'L', 'R', 'A');
69	break;
70	default:
71	return AVERROR(EINVAL);
72	}
73
74	/* Check before we alloc anything */
75	if (avctx->prediction_method != 0 && avctx->prediction_method != 2) {
76	av_log(avctx, AV_LOG_ERROR, "Invalid prediction method.\n");
77	return AVERROR(EINVAL);
78	}
79
80	flags = ((avctx->prediction_method + 1) << 8) \| (avctx->thread_count - 1);
81
82	avctx->priv_data = utv;
83	avctx->coded_frame = av_frame_alloc();
84
85	/* Alloc extradata buffer */
86	info = (UtVideoExtra )av_malloc(sizeof(info));
87
88	if (!info) {
89	av_log(avctx, AV_LOG_ERROR, "Could not allocate extradata buffer.\n");
90	return AVERROR(ENOMEM);
91	}
92
93	/*
94	* We use this buffer to hold the data that Ut Video returns,
95	* since we cannot decode planes separately with it.
96	*/
97	utv->buf_size = avpicture_get_size(avctx->pix_fmt,
98	avctx->width, avctx->height);
99	utv->buffer = (uint8_t *)av_malloc(utv->buf_size);
100
101	if (utv->buffer == NULL) {
102	av_log(avctx, AV_LOG_ERROR, "Could not allocate output buffer.\n");
103	return AVERROR(ENOMEM);
104	}
105
106	/*
107	* Create a Ut Video instance. Since the function wants
108	* an "interface name" string, pass it the name of the lib.
109	*/
110	utv->codec = CCodec::CreateInstance(UNFCC(avctx->codec_tag), "libavcodec");
111
112	/* Initialize encoder */
113	utv->codec->EncodeBegin(in_format, avctx->width, avctx->height,
114	CBGROSSWIDTH_WINDOWS);
115
116	/* Get extradata from encoder */
117	avctx->extradata_size = utv->codec->EncodeGetExtraDataSize();
118	utv->codec->EncodeGetExtraData(info, avctx->extradata_size, in_format,
119	avctx->width, avctx->height,
120	CBGROSSWIDTH_WINDOWS);
121	avctx->extradata = (uint8_t *)info;
122
123	/* Set flags */
124	utv->codec->SetState(&flags, sizeof(flags));
125
126	return 0;
127	}
128
129	static int utvideo_encode_frame(AVCodecContext avctx, AVPacket pkt,
130	const AVFrame pic, int got_packet)
131	{
132	UtVideoContext utv = (UtVideoContext )avctx->priv_data;
133	int w = avctx->width, h = avctx->height;
134	int ret, rgb_size, i;
135	bool keyframe;
136	uint8_t y, u, *v;
137	uint8_t *dst;
138
139	/* Alloc buffer */
140	if ((ret = ff_alloc_packet2(avctx, pkt, utv->buf_size)) < 0)
141	return ret;
142
143	dst = pkt->data;
144
145	/* Move input if needed data into Ut Video friendly buffer */
146	switch (avctx->pix_fmt) {
147	case AV_PIX_FMT_YUV420P:
148	y = utv->buffer;
149	u = y + w * h;
150	v = u + w * h / 4;
151	for (i = 0; i < h; i++) {
152	memcpy(y, pic->data[0] + i * pic->linesize[0], w);
153	y += w;
154	}
155	for (i = 0; i < h / 2; i++) {
156	memcpy(u, pic->data[2] + i * pic->linesize[2], w >> 1);
157	memcpy(v, pic->data[1] + i * pic->linesize[1], w >> 1);
158	u += w >> 1;
159	v += w >> 1;
160	}
161	break;
162	case AV_PIX_FMT_YUYV422:
163	for (i = 0; i < h; i++)
164	memcpy(utv->buffer + i * (w << 1),
165	pic->data[0] + i * pic->linesize[0], w << 1);
166	break;
167	case AV_PIX_FMT_BGR24:
168	case AV_PIX_FMT_RGB32:
169	/* Ut Video takes bottom-up BGR */
170	rgb_size = avctx->pix_fmt == AV_PIX_FMT_BGR24 ? 3 : 4;
171	for (i = 0; i < h; i++)
172	memcpy(utv->buffer + (h - i - 1) * w * rgb_size,
173	pic->data[0] + i * pic->linesize[0],
174	w * rgb_size);
175	break;
176	default:
177	return AVERROR(EINVAL);
178	}
179
180	/* Encode frame */
181	pkt->size = utv->codec->EncodeFrame(dst, &keyframe, utv->buffer);
182
183	if (!pkt->size) {
184	av_log(avctx, AV_LOG_ERROR, "EncodeFrame failed!\n");
185	return AVERROR_INVALIDDATA;
186	}
187
188	/*
189	* Ut Video is intra-only and every frame is a keyframe,
190	* and the API always returns true. In case something
191	* durastic changes in the future, such as inter support,
192	* assert that this is true.
193	*/
194	av_assert2(keyframe == true);
195	avctx->coded_frame->key_frame = 1;
196	avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
197
198	pkt->flags \|= AV_PKT_FLAG_KEY;
199	*got_packet = 1;
200	return 0;
201	}
202
203	static av_cold int utvideo_encode_close(AVCodecContext *avctx)
204	{
205	UtVideoContext utv = (UtVideoContext )avctx->priv_data;
206
207	av_freep(&avctx->coded_frame);
208	av_freep(&avctx->extradata);
209	av_freep(&utv->buffer);
210
211	utv->codec->EncodeEnd();
212	CCodec::DeleteInstance(utv->codec);
213
214	return 0;
215	}
216
217	AVCodec ff_libutvideo_encoder = {
218	"libutvideo",
219	NULL_IF_CONFIG_SMALL("Ut Video"),
220	AVMEDIA_TYPE_VIDEO,
221	AV_CODEC_ID_UTVIDEO,
222	CODEC_CAP_AUTO_THREADS \| CODEC_CAP_LOSSLESS,
223	NULL, /* supported_framerates */
224	(const enum AVPixelFormat[]) {
225	AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUYV422, AV_PIX_FMT_BGR24,
226	AV_PIX_FMT_RGB32, AV_PIX_FMT_NONE
227	},
228	NULL, /* supported_samplerates */
229	NULL, /* sample_fmts */
230	NULL, /* channel_layouts */
231	0, /* max_lowres */
232	NULL, /* priv_class */
233	NULL, /* profiles */
234	sizeof(UtVideoContext),
235	NULL, /* next */
236	NULL, /* init_thread_copy */
237	NULL, /* update_thread_context */
238	NULL, /* defaults */
239	NULL, /* init_static_data */
240	utvideo_encode_init,
241	NULL, /* encode */
242	utvideo_encode_frame,
243	NULL, /* decode */
244	utvideo_encode_close,
245	NULL, /* flush */
246	};