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https://gitee.com/openharmony/third_party_ffmpeg
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f6774f905f
The most interesting parts are initialization in ff_MPV_common_init() and uninitialization in ff_MPV_common_end(). ff_mpeg_unref_picture and ff_thread_release_buffer have additional NULL checks for Picture.f, because these functions can be called on uninitialized or partially initialized Pictures. NULL pointer checks are added to ff_thread_release_buffer() stub function. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
654 lines
24 KiB
C
654 lines
24 KiB
C
/*
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* SVQ1 Encoder
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* Copyright (C) 2004 Mike Melanson <melanson@pcisys.net>
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Sorenson Vector Quantizer #1 (SVQ1) video codec.
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* For more information of the SVQ1 algorithm, visit:
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* http://www.pcisys.net/~melanson/codecs/
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*/
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#include "avcodec.h"
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#include "dsputil.h"
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#include "hpeldsp.h"
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#include "mpegvideo.h"
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#include "h263.h"
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#include "internal.h"
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#include "mpegutils.h"
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#include "svq1.h"
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#include "svq1enc_cb.h"
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#undef NDEBUG
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#include <assert.h>
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typedef struct SVQ1Context {
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/* FIXME: Needed for motion estimation, should not be used for anything
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* else, the idea is to make the motion estimation eventually independent
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* of MpegEncContext, so this will be removed then. */
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MpegEncContext m;
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AVCodecContext *avctx;
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DSPContext dsp;
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HpelDSPContext hdsp;
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AVFrame *current_picture;
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AVFrame *last_picture;
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PutBitContext pb;
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GetBitContext gb;
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/* why ooh why this sick breadth first order,
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* everything is slower and more complex */
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PutBitContext reorder_pb[6];
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int frame_width;
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int frame_height;
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/* Y plane block dimensions */
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int y_block_width;
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int y_block_height;
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/* U & V plane (C planes) block dimensions */
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int c_block_width;
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int c_block_height;
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uint16_t *mb_type;
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uint32_t *dummy;
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int16_t (*motion_val8[3])[2];
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int16_t (*motion_val16[3])[2];
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int64_t rd_total;
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uint8_t *scratchbuf;
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} SVQ1Context;
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static void svq1_write_header(SVQ1Context *s, int frame_type)
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{
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int i;
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/* frame code */
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put_bits(&s->pb, 22, 0x20);
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/* temporal reference (sure hope this is a "don't care") */
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put_bits(&s->pb, 8, 0x00);
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/* frame type */
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put_bits(&s->pb, 2, frame_type - 1);
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if (frame_type == AV_PICTURE_TYPE_I) {
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/* no checksum since frame code is 0x20 */
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/* no embedded string either */
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/* output 5 unknown bits (2 + 2 + 1) */
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put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
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i = ff_match_2uint16(ff_svq1_frame_size_table,
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FF_ARRAY_ELEMS(ff_svq1_frame_size_table),
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s->frame_width, s->frame_height);
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put_bits(&s->pb, 3, i);
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if (i == 7) {
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put_bits(&s->pb, 12, s->frame_width);
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put_bits(&s->pb, 12, s->frame_height);
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}
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}
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/* no checksum or extra data (next 2 bits get 0) */
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put_bits(&s->pb, 2, 0);
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}
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#define QUALITY_THRESHOLD 100
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#define THRESHOLD_MULTIPLIER 0.6
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static int encode_block(SVQ1Context *s, uint8_t *src, uint8_t *ref,
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uint8_t *decoded, int stride, int level,
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int threshold, int lambda, int intra)
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{
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int count, y, x, i, j, split, best_mean, best_score, best_count;
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int best_vector[6];
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int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
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int w = 2 << (level + 2 >> 1);
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int h = 2 << (level + 1 >> 1);
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int size = w * h;
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int16_t block[7][256];
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const int8_t *codebook_sum, *codebook;
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const uint16_t(*mean_vlc)[2];
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const uint8_t(*multistage_vlc)[2];
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best_score = 0;
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// FIXME: Optimize, this does not need to be done multiple times.
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if (intra) {
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codebook_sum = svq1_intra_codebook_sum[level];
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codebook = ff_svq1_intra_codebooks[level];
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mean_vlc = ff_svq1_intra_mean_vlc;
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multistage_vlc = ff_svq1_intra_multistage_vlc[level];
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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int v = src[x + y * stride];
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block[0][x + w * y] = v;
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best_score += v * v;
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block_sum[0] += v;
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}
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}
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} else {
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codebook_sum = svq1_inter_codebook_sum[level];
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codebook = ff_svq1_inter_codebooks[level];
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mean_vlc = ff_svq1_inter_mean_vlc + 256;
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multistage_vlc = ff_svq1_inter_multistage_vlc[level];
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for (y = 0; y < h; y++) {
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for (x = 0; x < w; x++) {
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int v = src[x + y * stride] - ref[x + y * stride];
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block[0][x + w * y] = v;
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best_score += v * v;
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block_sum[0] += v;
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}
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}
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}
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best_count = 0;
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best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
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best_mean = block_sum[0] + (size >> 1) >> (level + 3);
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if (level < 4) {
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for (count = 1; count < 7; count++) {
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int best_vector_score = INT_MAX;
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int best_vector_sum = -999, best_vector_mean = -999;
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const int stage = count - 1;
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const int8_t *vector;
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for (i = 0; i < 16; i++) {
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int sum = codebook_sum[stage * 16 + i];
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int sqr, diff, score;
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vector = codebook + stage * size * 16 + i * size;
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sqr = s->dsp.ssd_int8_vs_int16(vector, block[stage], size);
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diff = block_sum[stage] - sum;
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score = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64bit slooow
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if (score < best_vector_score) {
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int mean = diff + (size >> 1) >> (level + 3);
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assert(mean > -300 && mean < 300);
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mean = av_clip(mean, intra ? 0 : -256, 255);
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best_vector_score = score;
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best_vector[stage] = i;
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best_vector_sum = sum;
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best_vector_mean = mean;
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}
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}
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assert(best_vector_mean != -999);
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vector = codebook + stage * size * 16 + best_vector[stage] * size;
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for (j = 0; j < size; j++)
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block[stage + 1][j] = block[stage][j] - vector[j];
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block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
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best_vector_score += lambda *
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(+1 + 4 * count +
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multistage_vlc[1 + count][1]
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+ mean_vlc[best_vector_mean][1]);
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if (best_vector_score < best_score) {
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best_score = best_vector_score;
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best_count = count;
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best_mean = best_vector_mean;
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}
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}
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}
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split = 0;
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if (best_score > threshold && level) {
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int score = 0;
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int offset = level & 1 ? stride * h / 2 : w / 2;
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PutBitContext backup[6];
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for (i = level - 1; i >= 0; i--)
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backup[i] = s->reorder_pb[i];
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score += encode_block(s, src, ref, decoded, stride, level - 1,
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threshold >> 1, lambda, intra);
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score += encode_block(s, src + offset, ref + offset, decoded + offset,
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stride, level - 1, threshold >> 1, lambda, intra);
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score += lambda;
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if (score < best_score) {
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best_score = score;
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split = 1;
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} else {
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for (i = level - 1; i >= 0; i--)
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s->reorder_pb[i] = backup[i];
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}
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}
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if (level > 0)
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put_bits(&s->reorder_pb[level], 1, split);
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if (!split) {
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assert(best_mean >= 0 && best_mean < 256 || !intra);
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assert(best_mean >= -256 && best_mean < 256);
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assert(best_count >= 0 && best_count < 7);
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assert(level < 4 || best_count == 0);
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/* output the encoding */
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put_bits(&s->reorder_pb[level],
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multistage_vlc[1 + best_count][1],
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multistage_vlc[1 + best_count][0]);
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put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
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mean_vlc[best_mean][0]);
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for (i = 0; i < best_count; i++) {
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assert(best_vector[i] >= 0 && best_vector[i] < 16);
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put_bits(&s->reorder_pb[level], 4, best_vector[i]);
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}
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for (y = 0; y < h; y++)
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for (x = 0; x < w; x++)
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decoded[x + y * stride] = src[x + y * stride] -
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block[best_count][x + w * y] +
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best_mean;
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}
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return best_score;
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}
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static int svq1_encode_plane(SVQ1Context *s, int plane,
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unsigned char *src_plane,
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unsigned char *ref_plane,
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unsigned char *decoded_plane,
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int width, int height, int src_stride, int stride)
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{
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const AVFrame *f = s->avctx->coded_frame;
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int x, y;
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int i;
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int block_width, block_height;
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int level;
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int threshold[6];
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uint8_t *src = s->scratchbuf + stride * 16;
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const int lambda = (f->quality * f->quality) >>
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(2 * FF_LAMBDA_SHIFT);
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/* figure out the acceptable level thresholds in advance */
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threshold[5] = QUALITY_THRESHOLD;
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for (level = 4; level >= 0; level--)
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threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
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block_width = (width + 15) / 16;
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block_height = (height + 15) / 16;
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if (f->pict_type == AV_PICTURE_TYPE_P) {
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s->m.avctx = s->avctx;
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s->m.current_picture_ptr = &s->m.current_picture;
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s->m.last_picture_ptr = &s->m.last_picture;
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s->m.last_picture.f->data[0] = ref_plane;
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s->m.linesize =
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s->m.last_picture.f->linesize[0] =
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s->m.new_picture.f->linesize[0] =
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s->m.current_picture.f->linesize[0] = stride;
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s->m.width = width;
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s->m.height = height;
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s->m.mb_width = block_width;
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s->m.mb_height = block_height;
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s->m.mb_stride = s->m.mb_width + 1;
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s->m.b8_stride = 2 * s->m.mb_width + 1;
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s->m.f_code = 1;
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s->m.pict_type = f->pict_type;
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s->m.me_method = s->avctx->me_method;
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s->m.me.scene_change_score = 0;
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s->m.flags = s->avctx->flags;
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// s->m.out_format = FMT_H263;
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// s->m.unrestricted_mv = 1;
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s->m.lambda = f->quality;
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s->m.qscale = s->m.lambda * 139 +
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FF_LAMBDA_SCALE * 64 >>
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FF_LAMBDA_SHIFT + 7;
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s->m.lambda2 = s->m.lambda * s->m.lambda +
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FF_LAMBDA_SCALE / 2 >>
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FF_LAMBDA_SHIFT;
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if (!s->motion_val8[plane]) {
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s->motion_val8[plane] = av_mallocz((s->m.b8_stride *
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block_height * 2 + 2) *
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2 * sizeof(int16_t));
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s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
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(block_height + 2) + 1) *
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2 * sizeof(int16_t));
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}
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s->m.mb_type = s->mb_type;
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// dummies, to avoid segfaults
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s->m.current_picture.mb_mean = (uint8_t *)s->dummy;
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s->m.current_picture.mb_var = (uint16_t *)s->dummy;
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s->m.current_picture.mc_mb_var = (uint16_t *)s->dummy;
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s->m.current_picture.mb_type = s->dummy;
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s->m.current_picture.motion_val[0] = s->motion_val8[plane] + 2;
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s->m.p_mv_table = s->motion_val16[plane] +
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s->m.mb_stride + 1;
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s->m.dsp = s->dsp; // move
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ff_init_me(&s->m);
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s->m.me.dia_size = s->avctx->dia_size;
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s->m.first_slice_line = 1;
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for (y = 0; y < block_height; y++) {
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s->m.new_picture.f->data[0] = src - y * 16 * stride; // ugly
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s->m.mb_y = y;
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for (i = 0; i < 16 && i + 16 * y < height; i++) {
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memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
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width);
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for (x = width; x < 16 * block_width; x++)
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src[i * stride + x] = src[i * stride + x - 1];
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}
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for (; i < 16 && i + 16 * y < 16 * block_height; i++)
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memcpy(&src[i * stride], &src[(i - 1) * stride],
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16 * block_width);
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for (x = 0; x < block_width; x++) {
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s->m.mb_x = x;
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ff_init_block_index(&s->m);
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ff_update_block_index(&s->m);
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ff_estimate_p_frame_motion(&s->m, x, y);
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}
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s->m.first_slice_line = 0;
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}
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ff_fix_long_p_mvs(&s->m);
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ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,
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CANDIDATE_MB_TYPE_INTER, 0);
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}
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s->m.first_slice_line = 1;
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for (y = 0; y < block_height; y++) {
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for (i = 0; i < 16 && i + 16 * y < height; i++) {
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memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
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width);
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for (x = width; x < 16 * block_width; x++)
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src[i * stride + x] = src[i * stride + x - 1];
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}
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for (; i < 16 && i + 16 * y < 16 * block_height; i++)
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memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
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s->m.mb_y = y;
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for (x = 0; x < block_width; x++) {
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uint8_t reorder_buffer[3][6][7 * 32];
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int count[3][6];
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int offset = y * 16 * stride + x * 16;
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uint8_t *decoded = decoded_plane + offset;
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uint8_t *ref = ref_plane + offset;
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int score[4] = { 0, 0, 0, 0 }, best;
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uint8_t *temp = s->scratchbuf;
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if (s->pb.buf_end - s->pb.buf -
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(put_bits_count(&s->pb) >> 3) < 3000) { // FIXME: check size
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av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
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return -1;
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}
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s->m.mb_x = x;
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ff_init_block_index(&s->m);
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ff_update_block_index(&s->m);
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if (f->pict_type == AV_PICTURE_TYPE_I ||
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(s->m.mb_type[x + y * s->m.mb_stride] &
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CANDIDATE_MB_TYPE_INTRA)) {
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for (i = 0; i < 6; i++)
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init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
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7 * 32);
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if (f->pict_type == AV_PICTURE_TYPE_P) {
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const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
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put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
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score[0] = vlc[1] * lambda;
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}
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score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
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5, 64, lambda, 1);
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for (i = 0; i < 6; i++) {
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count[0][i] = put_bits_count(&s->reorder_pb[i]);
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flush_put_bits(&s->reorder_pb[i]);
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}
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} else
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score[0] = INT_MAX;
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best = 0;
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if (f->pict_type == AV_PICTURE_TYPE_P) {
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const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
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int mx, my, pred_x, pred_y, dxy;
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int16_t *motion_ptr;
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motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
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if (s->m.mb_type[x + y * s->m.mb_stride] &
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CANDIDATE_MB_TYPE_INTER) {
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for (i = 0; i < 6; i++)
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init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
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7 * 32);
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put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
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s->m.pb = s->reorder_pb[5];
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mx = motion_ptr[0];
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my = motion_ptr[1];
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assert(mx >= -32 && mx <= 31);
|
|
assert(my >= -32 && my <= 31);
|
|
assert(pred_x >= -32 && pred_x <= 31);
|
|
assert(pred_y >= -32 && pred_y <= 31);
|
|
ff_h263_encode_motion(&s->m, mx - pred_x, 1);
|
|
ff_h263_encode_motion(&s->m, my - pred_y, 1);
|
|
s->reorder_pb[5] = s->m.pb;
|
|
score[1] += lambda * put_bits_count(&s->reorder_pb[5]);
|
|
|
|
dxy = (mx & 1) + 2 * (my & 1);
|
|
|
|
s->hdsp.put_pixels_tab[0][dxy](temp + 16,
|
|
ref + (mx >> 1) +
|
|
stride * (my >> 1),
|
|
stride, 16);
|
|
|
|
score[1] += encode_block(s, src + 16 * x, temp + 16,
|
|
decoded, stride, 5, 64, lambda, 0);
|
|
best = score[1] <= score[0];
|
|
|
|
vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
|
|
score[2] = s->dsp.sse[0](NULL, src + 16 * x, ref,
|
|
stride, 16);
|
|
score[2] += vlc[1] * lambda;
|
|
if (score[2] < score[best] && mx == 0 && my == 0) {
|
|
best = 2;
|
|
s->hdsp.put_pixels_tab[0][0](decoded, ref, stride, 16);
|
|
for (i = 0; i < 6; i++)
|
|
count[2][i] = 0;
|
|
put_bits(&s->pb, vlc[1], vlc[0]);
|
|
}
|
|
}
|
|
|
|
if (best == 1) {
|
|
for (i = 0; i < 6; i++) {
|
|
count[1][i] = put_bits_count(&s->reorder_pb[i]);
|
|
flush_put_bits(&s->reorder_pb[i]);
|
|
}
|
|
} else {
|
|
motion_ptr[0] =
|
|
motion_ptr[1] =
|
|
motion_ptr[2] =
|
|
motion_ptr[3] =
|
|
motion_ptr[0 + 2 * s->m.b8_stride] =
|
|
motion_ptr[1 + 2 * s->m.b8_stride] =
|
|
motion_ptr[2 + 2 * s->m.b8_stride] =
|
|
motion_ptr[3 + 2 * s->m.b8_stride] = 0;
|
|
}
|
|
}
|
|
|
|
s->rd_total += score[best];
|
|
|
|
for (i = 5; i >= 0; i--)
|
|
avpriv_copy_bits(&s->pb, reorder_buffer[best][i],
|
|
count[best][i]);
|
|
if (best == 0)
|
|
s->hdsp.put_pixels_tab[0][0](decoded, temp, stride, 16);
|
|
}
|
|
s->m.first_slice_line = 0;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int svq1_encode_end(AVCodecContext *avctx)
|
|
{
|
|
SVQ1Context *const s = avctx->priv_data;
|
|
int i;
|
|
|
|
av_log(avctx, AV_LOG_DEBUG, "RD: %f\n",
|
|
s->rd_total / (double)(avctx->width * avctx->height *
|
|
avctx->frame_number));
|
|
|
|
s->m.mb_type = NULL;
|
|
ff_MPV_common_end(&s->m);
|
|
|
|
av_freep(&s->m.me.scratchpad);
|
|
av_freep(&s->m.me.map);
|
|
av_freep(&s->m.me.score_map);
|
|
av_freep(&s->mb_type);
|
|
av_freep(&s->dummy);
|
|
av_freep(&s->scratchbuf);
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
av_freep(&s->motion_val8[i]);
|
|
av_freep(&s->motion_val16[i]);
|
|
}
|
|
|
|
av_frame_free(&s->current_picture);
|
|
av_frame_free(&s->last_picture);
|
|
av_frame_free(&avctx->coded_frame);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static av_cold int svq1_encode_init(AVCodecContext *avctx)
|
|
{
|
|
SVQ1Context *const s = avctx->priv_data;
|
|
int ret;
|
|
|
|
ff_dsputil_init(&s->dsp, avctx);
|
|
ff_hpeldsp_init(&s->hdsp, avctx->flags);
|
|
|
|
avctx->coded_frame = av_frame_alloc();
|
|
s->current_picture = av_frame_alloc();
|
|
s->last_picture = av_frame_alloc();
|
|
if (!avctx->coded_frame || !s->current_picture || !s->last_picture) {
|
|
svq1_encode_end(avctx);
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
s->frame_width = avctx->width;
|
|
s->frame_height = avctx->height;
|
|
|
|
s->y_block_width = (s->frame_width + 15) / 16;
|
|
s->y_block_height = (s->frame_height + 15) / 16;
|
|
|
|
s->c_block_width = (s->frame_width / 4 + 15) / 16;
|
|
s->c_block_height = (s->frame_height / 4 + 15) / 16;
|
|
|
|
s->avctx = avctx;
|
|
s->m.avctx = avctx;
|
|
|
|
if ((ret = ff_MPV_common_init(&s->m)) < 0) {
|
|
svq1_encode_end(avctx);
|
|
return ret;
|
|
}
|
|
|
|
s->m.picture_structure = PICT_FRAME;
|
|
s->m.me.temp =
|
|
s->m.me.scratchpad = av_mallocz((avctx->width + 64) *
|
|
2 * 16 * 2 * sizeof(uint8_t));
|
|
s->m.me.map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
|
|
s->m.me.score_map = av_mallocz(ME_MAP_SIZE * sizeof(uint32_t));
|
|
s->mb_type = av_mallocz((s->y_block_width + 1) *
|
|
s->y_block_height * sizeof(int16_t));
|
|
s->dummy = av_mallocz((s->y_block_width + 1) *
|
|
s->y_block_height * sizeof(int32_t));
|
|
ff_h263_encode_init(&s->m); // mv_penalty
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int svq1_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
|
|
const AVFrame *pict, int *got_packet)
|
|
{
|
|
SVQ1Context *const s = avctx->priv_data;
|
|
AVFrame *const p = avctx->coded_frame;
|
|
int i, ret;
|
|
|
|
if (!pkt->data &&
|
|
(ret = av_new_packet(pkt, s->y_block_width * s->y_block_height *
|
|
MAX_MB_BYTES * 3 + FF_MIN_BUFFER_SIZE)) < 0) {
|
|
av_log(avctx, AV_LOG_ERROR, "Error getting output packet.\n");
|
|
return ret;
|
|
}
|
|
|
|
if (avctx->pix_fmt != AV_PIX_FMT_YUV410P) {
|
|
av_log(avctx, AV_LOG_ERROR, "unsupported pixel format\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!s->current_picture->data[0]) {
|
|
ff_get_buffer(avctx, s->current_picture, 0);
|
|
ff_get_buffer(avctx, s->last_picture, 0);
|
|
s->scratchbuf = av_malloc(s->current_picture->linesize[0] * 16 * 2);
|
|
}
|
|
|
|
FFSWAP(AVFrame*, s->current_picture, s->last_picture);
|
|
|
|
init_put_bits(&s->pb, pkt->data, pkt->size);
|
|
|
|
p->pict_type = avctx->gop_size && avctx->frame_number % avctx->gop_size ?
|
|
AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
|
|
p->key_frame = p->pict_type == AV_PICTURE_TYPE_I;
|
|
p->quality = pict->quality;
|
|
|
|
svq1_write_header(s, p->pict_type);
|
|
for (i = 0; i < 3; i++)
|
|
if (svq1_encode_plane(s, i,
|
|
pict->data[i],
|
|
s->last_picture->data[i],
|
|
s->current_picture->data[i],
|
|
s->frame_width / (i ? 4 : 1),
|
|
s->frame_height / (i ? 4 : 1),
|
|
pict->linesize[i],
|
|
s->current_picture->linesize[i]) < 0)
|
|
return -1;
|
|
|
|
// avpriv_align_put_bits(&s->pb);
|
|
while (put_bits_count(&s->pb) & 31)
|
|
put_bits(&s->pb, 1, 0);
|
|
|
|
flush_put_bits(&s->pb);
|
|
|
|
pkt->size = put_bits_count(&s->pb) / 8;
|
|
if (p->pict_type == AV_PICTURE_TYPE_I)
|
|
pkt->flags |= AV_PKT_FLAG_KEY;
|
|
*got_packet = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
AVCodec ff_svq1_encoder = {
|
|
.name = "svq1",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.id = AV_CODEC_ID_SVQ1,
|
|
.priv_data_size = sizeof(SVQ1Context),
|
|
.init = svq1_encode_init,
|
|
.encode2 = svq1_encode_frame,
|
|
.close = svq1_encode_end,
|
|
.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
|
|
AV_PIX_FMT_NONE },
|
|
};
|