[deb_ffmpeg.git] / ffmpeg / libavcodec / asvenc.c

/*
 * Copyright (c) 2003 Michael Niedermayer
 *
 * 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
 */

/**
 * @file
 * ASUS V1/V2 encoder.
 */

#include "libavutil/attributes.h"
#include "libavutil/mem.h"

#include "aandcttab.h"
#include "asv.h"
#include "avcodec.h"
#include "dct.h"
#include "fdctdsp.h"
#include "internal.h"
#include "mathops.h"
#include "mpeg12data.h"

static inline void asv2_put_bits(PutBitContext *pb, int n, int v)
{
    put_bits(pb, n, ff_reverse[v << (8 - n)]);
}

static inline void asv1_put_level(PutBitContext *pb, int level)
{
    unsigned int index = level + 3;

    if (index <= 6) {
        put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
    } else {
        put_bits(pb, ff_asv_level_tab[3][1], ff_asv_level_tab[3][0]);
        put_sbits(pb, 8, level);
    }
}

static inline void asv2_put_level(PutBitContext *pb, int level)
{
    unsigned int index = level + 31;

    if (index <= 62) {
        put_bits(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
    } else {
        put_bits(pb, ff_asv2_level_tab[31][1], ff_asv2_level_tab[31][0]);
        asv2_put_bits(pb, 8, level & 0xFF);
    }
}

static inline void asv1_encode_block(ASV1Context *a, int16_t block[64])
{
    int i;
    int nc_count = 0;

    put_bits(&a->pb, 8, (block[0] + 32) >> 6);
    block[0] = 0;

    for (i = 0; i < 10; i++) {
        const int index = ff_asv_scantab[4 * i];
        int ccp         = 0;

        if ((block[index + 0] = (block[index + 0] *
                                 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
            ccp |= 8;
        if ((block[index + 8] = (block[index + 8] *
                                 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
            ccp |= 4;
        if ((block[index + 1] = (block[index + 1] *
                                 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
            ccp |= 2;
        if ((block[index + 9] = (block[index + 9] *
                                 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
            ccp |= 1;

        if (ccp) {
            for (; nc_count; nc_count--)
                put_bits(&a->pb, ff_asv_ccp_tab[0][1], ff_asv_ccp_tab[0][0]);

            put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);

            if (ccp & 8)
                asv1_put_level(&a->pb, block[index + 0]);
            if (ccp & 4)
                asv1_put_level(&a->pb, block[index + 8]);
            if (ccp & 2)
                asv1_put_level(&a->pb, block[index + 1]);
            if (ccp & 1)
                asv1_put_level(&a->pb, block[index + 9]);
        } else {
            nc_count++;
        }
    }
    put_bits(&a->pb, ff_asv_ccp_tab[16][1], ff_asv_ccp_tab[16][0]);
}

static inline void asv2_encode_block(ASV1Context *a, int16_t block[64])
{
    int i;
    int count = 0;

    for (count = 63; count > 3; count--) {
        const int index = ff_asv_scantab[count];
        if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
            break;
    }

    count >>= 2;

    asv2_put_bits(&a->pb, 4, count);
    asv2_put_bits(&a->pb, 8, (block[0] + 32) >> 6);
    block[0] = 0;

    for (i = 0; i <= count; i++) {
        const int index = ff_asv_scantab[4 * i];
        int ccp         = 0;

        if ((block[index + 0] = (block[index + 0] *
                                 a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
            ccp |= 8;
        if ((block[index + 8] = (block[index + 8] *
                                 a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
            ccp |= 4;
        if ((block[index + 1] = (block[index + 1] *
                                 a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
            ccp |= 2;
        if ((block[index + 9] = (block[index + 9] *
                                 a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
            ccp |= 1;

        av_assert2(i || ccp < 8);
        if (i)
            put_bits(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
        else
            put_bits(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);

        if (ccp) {
            if (ccp & 8)
                asv2_put_level(&a->pb, block[index + 0]);
            if (ccp & 4)
                asv2_put_level(&a->pb, block[index + 8]);
            if (ccp & 2)
                asv2_put_level(&a->pb, block[index + 1]);
            if (ccp & 1)
                asv2_put_level(&a->pb, block[index + 9]);
        }
    }
}

#define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)

static inline int encode_mb(ASV1Context *a, int16_t block[6][64])
{
    int i;

    if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb) >> 3) < MAX_MB_SIZE) {
        av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");
        return -1;
    }

    if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
        for (i = 0; i < 6; i++)
            asv1_encode_block(a, block[i]);
    } else {
        for (i = 0; i < 6; i++)
            asv2_encode_block(a, block[i]);
    }
    return 0;
}

static inline void dct_get(ASV1Context *a, const AVFrame *frame,
                           int mb_x, int mb_y)
{
    int16_t (*block)[64] = a->block;
    int linesize = frame->linesize[0];
    int i;

    uint8_t *ptr_y  = frame->data[0] + (mb_y * 16 * linesize)           + mb_x * 16;
    uint8_t *ptr_cb = frame->data[1] + (mb_y *  8 * frame->linesize[1]) + mb_x *  8;
    uint8_t *ptr_cr = frame->data[2] + (mb_y *  8 * frame->linesize[2]) + mb_x *  8;

    a->pdsp.get_pixels(block[0], ptr_y,                    linesize);
    a->pdsp.get_pixels(block[1], ptr_y + 8,                linesize);
    a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize,     linesize);
    a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
    for (i = 0; i < 4; i++)
        a->fdsp.fdct(block[i]);

    if (!(a->avctx->flags & CODEC_FLAG_GRAY)) {
        a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
        a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
        for (i = 4; i < 6; i++)
            a->fdsp.fdct(block[i]);
    }
}

static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                        const AVFrame *pict, int *got_packet)
{
    ASV1Context *const a = avctx->priv_data;
    int size, ret;
    int mb_x, mb_y;

    if (pict->width % 16 || pict->height % 16) {
        AVFrame *clone = av_frame_alloc();
        int i;

        if (!clone)
            return AVERROR(ENOMEM);
        clone->format = pict->format;
        clone->width  = FFALIGN(pict->width, 16);
        clone->height = FFALIGN(pict->height, 16);
        ret = av_frame_get_buffer(clone, 32);
        if (ret < 0) {
            av_frame_free(&clone);
            return ret;
        }

        ret = av_frame_copy(clone, pict);
        if (ret < 0) {
            av_frame_free(&clone);
            return ret;
        }

        for (i = 0; i<3; i++) {
            int x, y;
            int w  = FF_CEIL_RSHIFT(pict->width, !!i);
            int h  = FF_CEIL_RSHIFT(pict->height, !!i);
            int w2 = FF_CEIL_RSHIFT(clone->width, !!i);
            int h2 = FF_CEIL_RSHIFT(clone->height, !!i);
            for (y=0; y<h; y++)
                for (x=w; x<w2; x++)
                    clone->data[i][x + y*clone->linesize[i]] =
                        clone->data[i][w - 1 + y*clone->linesize[i]];
            for (y=h; y<h2; y++)
                for (x=0; x<w2; x++)
                    clone->data[i][x + y*clone->linesize[i]] =
                        clone->data[i][x + (h-1)*clone->linesize[i]];
        }
        ret = encode_frame(avctx, pkt, clone, got_packet);

        av_frame_free(&clone);
        return ret;
    }

    if ((ret = ff_alloc_packet2(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE +
                                FF_MIN_BUFFER_SIZE)) < 0)
        return ret;

    init_put_bits(&a->pb, pkt->data, pkt->size);

    for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
        for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
            dct_get(a, pict, mb_x, mb_y);
            encode_mb(a, a->block);
        }
    }

    if (a->mb_width2 != a->mb_width) {
        mb_x = a->mb_width2;
        for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
            dct_get(a, pict, mb_x, mb_y);
            encode_mb(a, a->block);
        }
    }

    if (a->mb_height2 != a->mb_height) {
        mb_y = a->mb_height2;
        for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
            dct_get(a, pict, mb_x, mb_y);
            encode_mb(a, a->block);
        }
    }
    emms_c();

    avpriv_align_put_bits(&a->pb);
    while (put_bits_count(&a->pb) & 31)
        put_bits(&a->pb, 8, 0);

    size = put_bits_count(&a->pb) / 32;

    if (avctx->codec_id == AV_CODEC_ID_ASV1) {
        a->bbdsp.bswap_buf((uint32_t *) pkt->data,
                           (uint32_t *) pkt->data, size);
    } else {
        int i;
        for (i = 0; i < 4 * size; i++)
            pkt->data[i] = ff_reverse[pkt->data[i]];
    }

    pkt->size   = size * 4;
    pkt->flags |= AV_PKT_FLAG_KEY;
    *got_packet = 1;

    return 0;
}

static av_cold int encode_init(AVCodecContext *avctx)
{
    ASV1Context *const a = avctx->priv_data;
    int i;
    const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;

    ff_asv_common_init(avctx);
    ff_fdctdsp_init(&a->fdsp, avctx);
    ff_pixblockdsp_init(&a->pdsp, avctx);

    if (avctx->global_quality <= 0)
        avctx->global_quality = 4 * FF_QUALITY_SCALE;

    a->inv_qscale = (32 * scale * FF_QUALITY_SCALE +
                     avctx->global_quality / 2) / avctx->global_quality;

    avctx->extradata                   = av_mallocz(8);
    avctx->extradata_size              = 8;
    ((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale);
    ((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));

    for (i = 0; i < 64; i++) {
        if (a->fdsp.fdct == ff_fdct_ifast) {
            int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
            a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q;
        } else {
            int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
            a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q;
        }
    }

    return 0;
}

#if CONFIG_ASV1_ENCODER
AVCodec ff_asv1_encoder = {
    .name           = "asv1",
    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V1"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_ASV1,
    .priv_data_size = sizeof(ASV1Context),
    .init           = encode_init,
    .encode2        = encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
};
#endif

#if CONFIG_ASV2_ENCODER
AVCodec ff_asv2_encoder = {
    .name           = "asv2",
    .long_name      = NULL_IF_CONFIG_SMALL("ASUS V2"),
    .type           = AVMEDIA_TYPE_VIDEO,
    .id             = AV_CODEC_ID_ASV2,
    .priv_data_size = sizeof(ASV1Context),
    .init           = encode_init,
    .encode2        = encode_frame,
    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
                                                     AV_PIX_FMT_NONE },
};
#endif
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* Copyright (c) 2003 Michael Niedermayer
	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 Lesser General Public
	8	* License as published by the Free Software Foundation; either
	9	* version 2.1 of the License, or (at your option) any later version.
	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	* Lesser General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU Lesser 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	* ASUS V1/V2 encoder.
	24	*/
	25
	26	#include "libavutil/attributes.h"
	27	#include "libavutil/mem.h"
	28
	29	#include "aandcttab.h"
	30	#include "asv.h"
	31	#include "avcodec.h"
	32	#include "dct.h"
	33	#include "fdctdsp.h"
	34	#include "internal.h"
	35	#include "mathops.h"
	36	#include "mpeg12data.h"
	37
	38	static inline void asv2_put_bits(PutBitContext *pb, int n, int v)
	39	{
	40	put_bits(pb, n, ff_reverse[v << (8 - n)]);
	41	}
	42
	43	static inline void asv1_put_level(PutBitContext *pb, int level)
	44	{
	45	unsigned int index = level + 3;
	46
	47	if (index <= 6) {
	48	put_bits(pb, ff_asv_level_tab[index][1], ff_asv_level_tab[index][0]);
	49	} else {
	50	put_bits(pb, ff_asv_level_tab[3][1], ff_asv_level_tab[3][0]);
	51	put_sbits(pb, 8, level);
	52	}
	53	}
	54
	55	static inline void asv2_put_level(PutBitContext *pb, int level)
	56	{
	57	unsigned int index = level + 31;
	58
	59	if (index <= 62) {
	60	put_bits(pb, ff_asv2_level_tab[index][1], ff_asv2_level_tab[index][0]);
	61	} else {
	62	put_bits(pb, ff_asv2_level_tab[31][1], ff_asv2_level_tab[31][0]);
	63	asv2_put_bits(pb, 8, level & 0xFF);
	64	}
65	}
66
67	static inline void asv1_encode_block(ASV1Context *a, int16_t block[64])
68	{
69	int i;
70	int nc_count = 0;
71
72	put_bits(&a->pb, 8, (block[0] + 32) >> 6);
73	block[0] = 0;
74
75	for (i = 0; i < 10; i++) {
76	const int index = ff_asv_scantab[4 * i];
77	int ccp = 0;
78
79	if ((block[index + 0] = (block[index + 0] *
80	a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
81	ccp \|= 8;
82	if ((block[index + 8] = (block[index + 8] *
83	a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
84	ccp \|= 4;
85	if ((block[index + 1] = (block[index + 1] *
86	a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
87	ccp \|= 2;
88	if ((block[index + 9] = (block[index + 9] *
89	a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
90	ccp \|= 1;
91
92	if (ccp) {
93	for (; nc_count; nc_count--)
94	put_bits(&a->pb, ff_asv_ccp_tab[0][1], ff_asv_ccp_tab[0][0]);
95
96	put_bits(&a->pb, ff_asv_ccp_tab[ccp][1], ff_asv_ccp_tab[ccp][0]);
97
98	if (ccp & 8)
99	asv1_put_level(&a->pb, block[index + 0]);
100	if (ccp & 4)
101	asv1_put_level(&a->pb, block[index + 8]);
102	if (ccp & 2)
103	asv1_put_level(&a->pb, block[index + 1]);
104	if (ccp & 1)
105	asv1_put_level(&a->pb, block[index + 9]);
106	} else {
107	nc_count++;
108	}
109	}
110	put_bits(&a->pb, ff_asv_ccp_tab[16][1], ff_asv_ccp_tab[16][0]);
111	}
112
113	static inline void asv2_encode_block(ASV1Context *a, int16_t block[64])
114	{
115	int i;
116	int count = 0;
117
118	for (count = 63; count > 3; count--) {
119	const int index = ff_asv_scantab[count];
120	if ((block[index] * a->q_intra_matrix[index] + (1 << 15)) >> 16)
121	break;
122	}
123
124	count >>= 2;
125
126	asv2_put_bits(&a->pb, 4, count);
127	asv2_put_bits(&a->pb, 8, (block[0] + 32) >> 6);
128	block[0] = 0;
129
130	for (i = 0; i <= count; i++) {
131	const int index = ff_asv_scantab[4 * i];
132	int ccp = 0;
133
134	if ((block[index + 0] = (block[index + 0] *
135	a->q_intra_matrix[index + 0] + (1 << 15)) >> 16))
136	ccp \|= 8;
137	if ((block[index + 8] = (block[index + 8] *
138	a->q_intra_matrix[index + 8] + (1 << 15)) >> 16))
139	ccp \|= 4;
140	if ((block[index + 1] = (block[index + 1] *
141	a->q_intra_matrix[index + 1] + (1 << 15)) >> 16))
142	ccp \|= 2;
143	if ((block[index + 9] = (block[index + 9] *
144	a->q_intra_matrix[index + 9] + (1 << 15)) >> 16))
145	ccp \|= 1;
146
147	av_assert2(i \|\| ccp < 8);
148	if (i)
149	put_bits(&a->pb, ff_asv_ac_ccp_tab[ccp][1], ff_asv_ac_ccp_tab[ccp][0]);
150	else
151	put_bits(&a->pb, ff_asv_dc_ccp_tab[ccp][1], ff_asv_dc_ccp_tab[ccp][0]);
152
153	if (ccp) {
154	if (ccp & 8)
155	asv2_put_level(&a->pb, block[index + 0]);
156	if (ccp & 4)
157	asv2_put_level(&a->pb, block[index + 8]);
158	if (ccp & 2)
159	asv2_put_level(&a->pb, block[index + 1]);
160	if (ccp & 1)
161	asv2_put_level(&a->pb, block[index + 9]);
162	}
163	}
164	}
165
166	#define MAX_MB_SIZE (30 * 16 * 16 * 3 / 2 / 8)
167
168	static inline int encode_mb(ASV1Context *a, int16_t block[6][64])
169	{
170	int i;
171
172	if (a->pb.buf_end - a->pb.buf - (put_bits_count(&a->pb) >> 3) < MAX_MB_SIZE) {
173	av_log(a->avctx, AV_LOG_ERROR, "encoded frame too large\n");
174	return -1;
175	}
176
177	if (a->avctx->codec_id == AV_CODEC_ID_ASV1) {
178	for (i = 0; i < 6; i++)
179	asv1_encode_block(a, block[i]);
180	} else {
181	for (i = 0; i < 6; i++)
182	asv2_encode_block(a, block[i]);
183	}
184	return 0;
185	}
186
187	static inline void dct_get(ASV1Context a, const AVFrame frame,
188	int mb_x, int mb_y)
189	{
190	int16_t (*block)[64] = a->block;
191	int linesize = frame->linesize[0];
192	int i;
193
194	uint8_t ptr_y = frame->data[0] + (mb_y 16 * linesize) + mb_x * 16;
195	uint8_t ptr_cb = frame->data[1] + (mb_y 8 * frame->linesize[1]) + mb_x * 8;
196	uint8_t ptr_cr = frame->data[2] + (mb_y 8 * frame->linesize[2]) + mb_x * 8;
197
198	a->pdsp.get_pixels(block[0], ptr_y, linesize);
199	a->pdsp.get_pixels(block[1], ptr_y + 8, linesize);
200	a->pdsp.get_pixels(block[2], ptr_y + 8 * linesize, linesize);
201	a->pdsp.get_pixels(block[3], ptr_y + 8 * linesize + 8, linesize);
202	for (i = 0; i < 4; i++)
203	a->fdsp.fdct(block[i]);
204
205	if (!(a->avctx->flags & CODEC_FLAG_GRAY)) {
206	a->pdsp.get_pixels(block[4], ptr_cb, frame->linesize[1]);
207	a->pdsp.get_pixels(block[5], ptr_cr, frame->linesize[2]);
208	for (i = 4; i < 6; i++)
209	a->fdsp.fdct(block[i]);
210	}
211	}
212
213	static int encode_frame(AVCodecContext avctx, AVPacket pkt,
214	const AVFrame pict, int got_packet)
215	{
216	ASV1Context *const a = avctx->priv_data;
217	int size, ret;
218	int mb_x, mb_y;
219
220	if (pict->width % 16 \|\| pict->height % 16) {
221	AVFrame *clone = av_frame_alloc();
222	int i;
223
224	if (!clone)
225	return AVERROR(ENOMEM);
226	clone->format = pict->format;
227	clone->width = FFALIGN(pict->width, 16);
228	clone->height = FFALIGN(pict->height, 16);
229	ret = av_frame_get_buffer(clone, 32);
230	if (ret < 0) {
231	av_frame_free(&clone);
232	return ret;
233	}
234
235	ret = av_frame_copy(clone, pict);
236	if (ret < 0) {
237	av_frame_free(&clone);
238	return ret;
239	}
240
241	for (i = 0; i<3; i++) {
242	int x, y;
243	int w = FF_CEIL_RSHIFT(pict->width, !!i);
244	int h = FF_CEIL_RSHIFT(pict->height, !!i);
245	int w2 = FF_CEIL_RSHIFT(clone->width, !!i);
246	int h2 = FF_CEIL_RSHIFT(clone->height, !!i);
247	for (y=0; y<h; y++)
248	for (x=w; x<w2; x++)
249	clone->data[i][x + y*clone->linesize[i]] =
250	clone->data[i][w - 1 + y*clone->linesize[i]];
251	for (y=h; y<h2; y++)
252	for (x=0; x<w2; x++)
253	clone->data[i][x + y*clone->linesize[i]] =
254	clone->data[i][x + (h-1)*clone->linesize[i]];
255	}
256	ret = encode_frame(avctx, pkt, clone, got_packet);
257
258	av_frame_free(&clone);
259	return ret;
260	}
261
262	if ((ret = ff_alloc_packet2(avctx, pkt, a->mb_height * a->mb_width * MAX_MB_SIZE +
263	FF_MIN_BUFFER_SIZE)) < 0)
264	return ret;
265
266	init_put_bits(&a->pb, pkt->data, pkt->size);
267
268	for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
269	for (mb_x = 0; mb_x < a->mb_width2; mb_x++) {
270	dct_get(a, pict, mb_x, mb_y);
271	encode_mb(a, a->block);
272	}
273	}
274
275	if (a->mb_width2 != a->mb_width) {
276	mb_x = a->mb_width2;
277	for (mb_y = 0; mb_y < a->mb_height2; mb_y++) {
278	dct_get(a, pict, mb_x, mb_y);
279	encode_mb(a, a->block);
280	}
281	}
282
283	if (a->mb_height2 != a->mb_height) {
284	mb_y = a->mb_height2;
285	for (mb_x = 0; mb_x < a->mb_width; mb_x++) {
286	dct_get(a, pict, mb_x, mb_y);
287	encode_mb(a, a->block);
288	}
289	}
290	emms_c();
291
292	avpriv_align_put_bits(&a->pb);
293	while (put_bits_count(&a->pb) & 31)
294	put_bits(&a->pb, 8, 0);
295
296	size = put_bits_count(&a->pb) / 32;
297
298	if (avctx->codec_id == AV_CODEC_ID_ASV1) {
299	a->bbdsp.bswap_buf((uint32_t *) pkt->data,
300	(uint32_t *) pkt->data, size);
301	} else {
302	int i;
303	for (i = 0; i < 4 * size; i++)
304	pkt->data[i] = ff_reverse[pkt->data[i]];
305	}
306
307	pkt->size = size * 4;
308	pkt->flags \|= AV_PKT_FLAG_KEY;
309	*got_packet = 1;
310
311	return 0;
312	}
313
314	static av_cold int encode_init(AVCodecContext *avctx)
315	{
316	ASV1Context *const a = avctx->priv_data;
317	int i;
318	const int scale = avctx->codec_id == AV_CODEC_ID_ASV1 ? 1 : 2;
319
320	ff_asv_common_init(avctx);
321	ff_fdctdsp_init(&a->fdsp, avctx);
322	ff_pixblockdsp_init(&a->pdsp, avctx);
323
324	if (avctx->global_quality <= 0)
325	avctx->global_quality = 4 * FF_QUALITY_SCALE;
326
327	a->inv_qscale = (32 * scale * FF_QUALITY_SCALE +
328	avctx->global_quality / 2) / avctx->global_quality;
329
330	avctx->extradata = av_mallocz(8);
331	avctx->extradata_size = 8;
332	((uint32_t *) avctx->extradata)[0] = av_le2ne32(a->inv_qscale);
333	((uint32_t *) avctx->extradata)[1] = av_le2ne32(AV_RL32("ASUS"));
334
335	for (i = 0; i < 64; i++) {
336	if (a->fdsp.fdct == ff_fdct_ifast) {
337	int q = 32LL * scale * ff_mpeg1_default_intra_matrix[i] * ff_aanscales[i];
338	a->q_intra_matrix[i] = (((int64_t)a->inv_qscale << 30) + q / 2) / q;
339	} else {
340	int q = 32 * scale * ff_mpeg1_default_intra_matrix[i];
341	a->q_intra_matrix[i] = ((a->inv_qscale << 16) + q / 2) / q;
342	}
343	}
344
345	return 0;
346	}
347
348	#if CONFIG_ASV1_ENCODER
349	AVCodec ff_asv1_encoder = {
350	.name = "asv1",
351	.long_name = NULL_IF_CONFIG_SMALL("ASUS V1"),
352	.type = AVMEDIA_TYPE_VIDEO,
353	.id = AV_CODEC_ID_ASV1,
354	.priv_data_size = sizeof(ASV1Context),
355	.init = encode_init,
356	.encode2 = encode_frame,
357	.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
358	AV_PIX_FMT_NONE },
359	};
360	#endif
361
362	#if CONFIG_ASV2_ENCODER
363	AVCodec ff_asv2_encoder = {
364	.name = "asv2",
365	.long_name = NULL_IF_CONFIG_SMALL("ASUS V2"),
366	.type = AVMEDIA_TYPE_VIDEO,
367	.id = AV_CODEC_ID_ASV2,
368	.priv_data_size = sizeof(ASV1Context),
369	.init = encode_init,
370	.encode2 = encode_frame,
371	.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
372	AV_PIX_FMT_NONE },
373	};
374	#endif