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FFmpeg/libavcodec/svq1enc.c
Andreas Rheinhardt bc109a53c7 avcodec/mpegpicture: Move mb_var, mc_mb_var and mb_mean to MpegEncCtx 
These tables are only used by encoders and only for the current picture;
ergo they need not be put into the picture at all, but rather into
the encoder's context. They also don't need to be refcounted,
because there is only one owner.

In contrast to this, the earlier code refcounts them which
incurs unnecessary overhead. These references are not unreferenced
in ff_mpeg_unref_picture() (they are kept in order to have something
like a buffer pool), so that several buffers are kept at the same
time, although only one is needed, thereby wasting memory.

The code also propagates references to other pictures not part of
the pictures array (namely the copy of the current/next/last picture
in the MpegEncContext which get references of their own). These
references are not unreferenced in ff_mpeg_unref_picture() (the
buffers are probably kept in order to have something like a pool),
yet if the current picture is a B-frame, it gets unreferenced
at the end of ff_mpv_encode_picture() and its slot in the picture
array will therefore be reused the next time; but the copy of the
current picture also still has its references and therefore
these buffers will be made duplicated in order to make them writable
in the next call to ff_mpv_encode_picture(). This is of course
unnecessary.

Finally, ff_find_unused_picture() is supposed to just return
any unused picture and the code is supposed to work with it;
yet for the vsynth*-mpeg4-adap tests the result depends upon
the content of these buffers; given that this patchset
changes the content of these buffers (the initial content is now
the state of these buffers after encoding the last frame;
before this patch the buffers used came from the last picture
that occupied the same slot in the picture array) their ref-files
needed to be changed. This points to a bug somewhere (if one removes
the initialization, one gets uninitialized reads in
adaptive_quantization in ratecontrol.c).

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-08-09 19:17:22 +02:00

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/*
* SVQ1 Encoder
* Copyright (C) 2004 Mike Melanson <melanson@pcisys.net>
*
* 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
* Sorenson Vector Quantizer #1 (SVQ1) video codec.
* For more information of the SVQ1 algorithm, visit:
* http://www.pcisys.net/~melanson/codecs/
*/
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "hpeldsp.h"
#include "me_cmp.h"
#include "mpegvideo.h"
#include "h263.h"
#include "h263enc.h"
#include "internal.h"
#include "mpegutils.h"
#include "packet_internal.h"
#include "svq1.h"
#include "svq1enc.h"
#include "svq1enc_cb.h"
#include "libavutil/avassert.h"
static void svq1_write_header(SVQ1EncContext *s, int frame_type)
{
int i;
/* frame code */
put_bits(&s->pb, 22, 0x20);
/* temporal reference (sure hope this is a "don't care") */
put_bits(&s->pb, 8, 0x00);
/* frame type */
put_bits(&s->pb, 2, frame_type - 1);
if (frame_type == AV_PICTURE_TYPE_I) {
/* no checksum since frame code is 0x20 */
/* no embedded string either */
/* output 5 unknown bits (2 + 2 + 1) */
put_bits(&s->pb, 5, 2); /* 2 needed by quicktime decoder */
i = ff_match_2uint16((void*)ff_svq1_frame_size_table,
FF_ARRAY_ELEMS(ff_svq1_frame_size_table),
s->frame_width, s->frame_height);
put_bits(&s->pb, 3, i);
if (i == 7) {
put_bits(&s->pb, 12, s->frame_width);
put_bits(&s->pb, 12, s->frame_height);
}
}
/* no checksum or extra data (next 2 bits get 0) */
put_bits(&s->pb, 2, 0);
}
#define QUALITY_THRESHOLD 100
#define THRESHOLD_MULTIPLIER 0.6
static int ssd_int8_vs_int16_c(const int8_t *pix1, const int16_t *pix2,
intptr_t size)
{
int score = 0, i;
for (i = 0; i < size; i++)
score += (pix1[i] - pix2[i]) * (pix1[i] - pix2[i]);
return score;
}
static int encode_block(SVQ1EncContext *s, uint8_t *src, uint8_t *ref,
uint8_t *decoded, int stride, unsigned level,
int threshold, int lambda, int intra)
{
int count, y, x, i, j, split, best_mean, best_score, best_count;
int best_vector[6];
int block_sum[7] = { 0, 0, 0, 0, 0, 0 };
int w = 2 << (level + 2 >> 1);
int h = 2 << (level + 1 >> 1);
int size = w * h;
int16_t (*block)[256] = s->encoded_block_levels[level];
const int8_t *codebook_sum, *codebook;
const uint16_t(*mean_vlc)[2];
const uint8_t(*multistage_vlc)[2];
best_score = 0;
// FIXME: Optimize, this does not need to be done multiple times.
if (intra) {
// level is 5 when encode_block is called from svq1_encode_plane
// and always < 4 when called recursively from this function.
codebook_sum = level < 4 ? svq1_intra_codebook_sum[level] : NULL;
codebook = ff_svq1_intra_codebooks[level];
mean_vlc = ff_svq1_intra_mean_vlc;
multistage_vlc = ff_svq1_intra_multistage_vlc[level];
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
int v = src[x + y * stride];
block[0][x + w * y] = v;
best_score += v * v;
block_sum[0] += v;
}
}
} else {
// level is 5 or < 4, see above for details.
codebook_sum = level < 4 ? svq1_inter_codebook_sum[level] : NULL;
codebook = ff_svq1_inter_codebooks[level];
mean_vlc = ff_svq1_inter_mean_vlc + 256;
multistage_vlc = ff_svq1_inter_multistage_vlc[level];
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
int v = src[x + y * stride] - ref[x + y * stride];
block[0][x + w * y] = v;
best_score += v * v;
block_sum[0] += v;
}
}
}
best_count = 0;
best_score -= (int)((unsigned)block_sum[0] * block_sum[0] >> (level + 3));
best_mean = block_sum[0] + (size >> 1) >> (level + 3);
if (level < 4) {
for (count = 1; count < 7; count++) {
int best_vector_score = INT_MAX;
int best_vector_sum = -999, best_vector_mean = -999;
const int stage = count - 1;
const int8_t *vector;
for (i = 0; i < 16; i++) {
int sum = codebook_sum[stage * 16 + i];
int sqr, diff, score;
vector = codebook + stage * size * 16 + i * size;
sqr = s->ssd_int8_vs_int16(vector, block[stage], size);
diff = block_sum[stage] - sum;
score = sqr - (diff * (int64_t)diff >> (level + 3)); // FIXME: 64 bits slooow
if (score < best_vector_score) {
int mean = diff + (size >> 1) >> (level + 3);
av_assert2(mean > -300 && mean < 300);
mean = av_clip(mean, intra ? 0 : -256, 255);
best_vector_score = score;
best_vector[stage] = i;
best_vector_sum = sum;
best_vector_mean = mean;
}
}
av_assert0(best_vector_mean != -999);
vector = codebook + stage * size * 16 + best_vector[stage] * size;
for (j = 0; j < size; j++)
block[stage + 1][j] = block[stage][j] - vector[j];
block_sum[stage + 1] = block_sum[stage] - best_vector_sum;
best_vector_score += lambda *
(+1 + 4 * count +
multistage_vlc[1 + count][1]
+ mean_vlc[best_vector_mean][1]);
if (best_vector_score < best_score) {
best_score = best_vector_score;
best_count = count;
best_mean = best_vector_mean;
}
}
}
split = 0;
if (best_score > threshold && level) {
int score = 0;
int offset = level & 1 ? stride * h / 2 : w / 2;
PutBitContext backup[6];
for (i = level - 1; i >= 0; i--)
backup[i] = s->reorder_pb[i];
score += encode_block(s, src, ref, decoded, stride, level - 1,
threshold >> 1, lambda, intra);
score += encode_block(s, src + offset, ref + offset, decoded + offset,
stride, level - 1, threshold >> 1, lambda, intra);
score += lambda;
if (score < best_score) {
best_score = score;
split = 1;
} else {
for (i = level - 1; i >= 0; i--)
s->reorder_pb[i] = backup[i];
}
}
if (level > 0)
put_bits(&s->reorder_pb[level], 1, split);
if (!split) {
av_assert1(best_mean >= 0 && best_mean < 256 || !intra);
av_assert1(best_mean >= -256 && best_mean < 256);
av_assert1(best_count >= 0 && best_count < 7);
av_assert1(level < 4 || best_count == 0);
/* output the encoding */
put_bits(&s->reorder_pb[level],
multistage_vlc[1 + best_count][1],
multistage_vlc[1 + best_count][0]);
put_bits(&s->reorder_pb[level], mean_vlc[best_mean][1],
mean_vlc[best_mean][0]);
for (i = 0; i < best_count; i++) {
av_assert2(best_vector[i] >= 0 && best_vector[i] < 16);
put_bits(&s->reorder_pb[level], 4, best_vector[i]);
}
for (y = 0; y < h; y++)
for (x = 0; x < w; x++)
decoded[x + y * stride] = src[x + y * stride] -
block[best_count][x + w * y] +
best_mean;
}
return best_score;
}
static void init_block_index(MpegEncContext *s){
s->block_index[0]= s->b8_stride*(s->mb_y*2 ) + s->mb_x*2;
s->block_index[1]= s->b8_stride*(s->mb_y*2 ) + 1 + s->mb_x*2;
s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) + s->mb_x*2;
s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) + 1 + s->mb_x*2;
s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x;
s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x;
}
static int svq1_encode_plane(SVQ1EncContext *s, int plane,
const unsigned char *src_plane,
unsigned char *ref_plane,
unsigned char *decoded_plane,
int width, int height, int src_stride, int stride)
{
int x, y;
int i;
int block_width, block_height;
int level;
int threshold[6];
uint8_t *src = s->scratchbuf + stride * 32;
const int lambda = (s->quality * s->quality) >>
(2 * FF_LAMBDA_SHIFT);
/* figure out the acceptable level thresholds in advance */
threshold[5] = QUALITY_THRESHOLD;
for (level = 4; level >= 0; level--)
threshold[level] = threshold[level + 1] * THRESHOLD_MULTIPLIER;
block_width = (width + 15) / 16;
block_height = (height + 15) / 16;
if (s->pict_type == AV_PICTURE_TYPE_P) {
s->m.avctx = s->avctx;
s->m.current_picture_ptr = &s->m.current_picture;
s->m.last_picture_ptr = &s->m.last_picture;
s->m.last_picture.f->data[0] = ref_plane;
s->m.linesize =
s->m.last_picture.f->linesize[0] =
s->m.new_picture->linesize[0] =
s->m.current_picture.f->linesize[0] = stride;
s->m.width = width;
s->m.height = height;
s->m.mb_width = block_width;
s->m.mb_height = block_height;
s->m.mb_stride = s->m.mb_width + 1;
s->m.b8_stride = 2 * s->m.mb_width + 1;
s->m.f_code = 1;
s->m.pict_type = s->pict_type;
s->m.motion_est = s->motion_est;
s->m.me.scene_change_score = 0;
// s->m.out_format = FMT_H263;
// s->m.unrestricted_mv = 1;
s->m.lambda = s->quality;
s->m.qscale = s->m.lambda * 139 +
FF_LAMBDA_SCALE * 64 >>
FF_LAMBDA_SHIFT + 7;
s->m.lambda2 = s->m.lambda * s->m.lambda +
FF_LAMBDA_SCALE / 2 >>
FF_LAMBDA_SHIFT;
if (!s->motion_val8[plane]) {
s->motion_val8[plane] = av_mallocz((s->m.b8_stride *
block_height * 2 + 2) *
2 * sizeof(int16_t));
s->motion_val16[plane] = av_mallocz((s->m.mb_stride *
(block_height + 2) + 1) *
2 * sizeof(int16_t));
if (!s->motion_val8[plane] || !s->motion_val16[plane])
return AVERROR(ENOMEM);
}
s->m.mb_type = s->mb_type;
// dummies, to avoid segfaults
s->m.mb_mean = (uint8_t *)s->dummy;
s->m.mb_var = (uint16_t *)s->dummy;
s->m.mc_mb_var = (uint16_t *)s->dummy;
s->m.current_picture.mb_type = s->dummy;
s->m.current_picture.motion_val[0] = s->motion_val8[plane] + 2;
s->m.p_mv_table = s->motion_val16[plane] +
s->m.mb_stride + 1;
s->m.mecc = s->mecc; // move
ff_init_me(&s->m);
s->m.me.dia_size = s->avctx->dia_size;
s->m.first_slice_line = 1;
for (y = 0; y < block_height; y++) {
s->m.new_picture->data[0] = src - y * 16 * stride; // ugly
s->m.mb_y = y;
for (i = 0; i < 16 && i + 16 * y < height; i++) {
memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
width);
for (x = width; x < 16 * block_width; x++)
src[i * stride + x] = src[i * stride + x - 1];
}
for (; i < 16 && i + 16 * y < 16 * block_height; i++)
memcpy(&src[i * stride], &src[(i - 1) * stride],
16 * block_width);
for (x = 0; x < block_width; x++) {
s->m.mb_x = x;
init_block_index(&s->m);
ff_estimate_p_frame_motion(&s->m, x, y);
}
s->m.first_slice_line = 0;
}
ff_fix_long_p_mvs(&s->m, CANDIDATE_MB_TYPE_INTRA);
ff_fix_long_mvs(&s->m, NULL, 0, s->m.p_mv_table, s->m.f_code,
CANDIDATE_MB_TYPE_INTER, 0);
}
s->m.first_slice_line = 1;
for (y = 0; y < block_height; y++) {
for (i = 0; i < 16 && i + 16 * y < height; i++) {
memcpy(&src[i * stride], &src_plane[(i + 16 * y) * src_stride],
width);
for (x = width; x < 16 * block_width; x++)
src[i * stride + x] = src[i * stride + x - 1];
}
for (; i < 16 && i + 16 * y < 16 * block_height; i++)
memcpy(&src[i * stride], &src[(i - 1) * stride], 16 * block_width);
s->m.mb_y = y;
for (x = 0; x < block_width; x++) {
uint8_t reorder_buffer[2][6][7 * 32];
int count[2][6];
int offset = y * 16 * stride + x * 16;
uint8_t *decoded = decoded_plane + offset;
const uint8_t *ref = ref_plane + offset;
int score[4] = { 0, 0, 0, 0 }, best;
uint8_t *temp = s->scratchbuf;
if (put_bytes_left(&s->pb, 0) < 3000) { // FIXME: check size
av_log(s->avctx, AV_LOG_ERROR, "encoded frame too large\n");
return -1;
}
s->m.mb_x = x;
init_block_index(&s->m);
if (s->pict_type == AV_PICTURE_TYPE_I ||
(s->m.mb_type[x + y * s->m.mb_stride] &
CANDIDATE_MB_TYPE_INTRA)) {
for (i = 0; i < 6; i++)
init_put_bits(&s->reorder_pb[i], reorder_buffer[0][i],
7 * 32);
if (s->pict_type == AV_PICTURE_TYPE_P) {
const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTRA];
put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
score[0] = vlc[1] * lambda;
}
score[0] += encode_block(s, src + 16 * x, NULL, temp, stride,
5, 64, lambda, 1);
for (i = 0; i < 6; i++) {
count[0][i] = put_bits_count(&s->reorder_pb[i]);
flush_put_bits(&s->reorder_pb[i]);
}
} else
score[0] = INT_MAX;
best = 0;
if (s->pict_type == AV_PICTURE_TYPE_P) {
const uint8_t *vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_INTER];
int mx, my, pred_x, pred_y, dxy;
int16_t *motion_ptr;
motion_ptr = ff_h263_pred_motion(&s->m, 0, 0, &pred_x, &pred_y);
if (s->m.mb_type[x + y * s->m.mb_stride] &
CANDIDATE_MB_TYPE_INTER) {
for (i = 0; i < 6; i++)
init_put_bits(&s->reorder_pb[i], reorder_buffer[1][i],
7 * 32);
put_bits(&s->reorder_pb[5], vlc[1], vlc[0]);
s->m.pb = s->reorder_pb[5];
mx = motion_ptr[0];
my = motion_ptr[1];
av_assert1(mx >= -32 && mx <= 31);
av_assert1(my >= -32 && my <= 31);
av_assert1(pred_x >= -32 && pred_x <= 31);
av_assert1(pred_y >= -32 && pred_y <= 31);
ff_h263_encode_motion(&s->m.pb, mx - pred_x, 1);
ff_h263_encode_motion(&s->m.pb, 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*stride,
ref + (mx >> 1) +
stride * (my >> 1),
stride, 16);
score[1] += encode_block(s, src + 16 * x, temp + 16*stride,
decoded, stride, 5, 64, lambda, 0);
best = score[1] <= score[0];
vlc = ff_svq1_block_type_vlc[SVQ1_BLOCK_SKIP];
score[2] = s->mecc.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);
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];
if (best != 2)
for (i = 5; i >= 0; i--)
ff_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)
{
SVQ1EncContext *const s = avctx->priv_data;
int i;
if (avctx->frame_number)
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);
return 0;
}
static av_cold int svq1_encode_init(AVCodecContext *avctx)
{
SVQ1EncContext *const s = avctx->priv_data;
int ret;
if (avctx->width >= 4096 || avctx->height >= 4096) {
av_log(avctx, AV_LOG_ERROR, "Dimensions too large, maximum is 4095x4095\n");
return AVERROR(EINVAL);
}
ff_hpeldsp_init(&s->hdsp, avctx->flags);
ff_me_cmp_init(&s->mecc, avctx);
ff_mpegvideoencdsp_init(&s->m.mpvencdsp, avctx);
s->current_picture = av_frame_alloc();
s->last_picture = av_frame_alloc();
if (!s->current_picture || !s->last_picture) {
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) {
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));
s->ssd_int8_vs_int16 = ssd_int8_vs_int16_c;
if (!s->m.me.temp || !s->m.me.scratchpad || !s->m.me.map ||
!s->m.me.score_map || !s->mb_type || !s->dummy) {
return AVERROR(ENOMEM);
}
#if ARCH_PPC
ff_svq1enc_init_ppc(s);
#elif ARCH_X86
ff_svq1enc_init_x86(s);
#endif
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)
{
SVQ1EncContext *const s = avctx->priv_data;
int i, ret;
ret = ff_alloc_packet(avctx, pkt, s->y_block_width * s->y_block_height *
MAX_MB_BYTES * 3 + AV_INPUT_BUFFER_MIN_SIZE);
if (ret < 0)
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]) {
if ((ret = ff_encode_alloc_frame(avctx, s->current_picture)) < 0) {
return ret;
}
}
if (!s->last_picture->data[0]) {
ret = ff_encode_alloc_frame(avctx, s->last_picture);
if (ret < 0)
return ret;
}
if (!s->scratchbuf) {
s->scratchbuf = av_malloc_array(s->current_picture->linesize[0], 16 * 3);
if (!s->scratchbuf)
return AVERROR(ENOMEM);
}
FFSWAP(AVFrame*, s->current_picture, s->last_picture);
init_put_bits(&s->pb, pkt->data, pkt->size);
if (avctx->gop_size && (avctx->frame_number % avctx->gop_size))
s->pict_type = AV_PICTURE_TYPE_P;
else
s->pict_type = AV_PICTURE_TYPE_I;
s->quality = pict->quality;
ff_side_data_set_encoder_stats(pkt, pict->quality, NULL, 0, s->pict_type);
svq1_write_header(s, s->pict_type);
for (i = 0; i < 3; i++) {
int ret = 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]);
emms_c();
if (ret < 0) {
int j;
for (j = 0; j < i; j++) {
av_freep(&s->motion_val8[j]);
av_freep(&s->motion_val16[j]);
}
av_freep(&s->scratchbuf);
return -1;
}
}
// 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_bytes_output(&s->pb);
if (s->pict_type == AV_PICTURE_TYPE_I)
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;
return 0;
}
#define OFFSET(x) offsetof(struct SVQ1EncContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "motion-est", "Motion estimation algorithm", OFFSET(motion_est), AV_OPT_TYPE_INT, { .i64 = FF_ME_EPZS }, FF_ME_ZERO, FF_ME_XONE, VE, "motion-est"},
{ "zero", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_ZERO }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
{ "epzs", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_EPZS }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
{ "xone", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = FF_ME_XONE }, 0, 0, FF_MPV_OPT_FLAGS, "motion-est" },
{ NULL },
};
static const AVClass svq1enc_class = {
.class_name = "svq1enc",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
const FFCodec ff_svq1_encoder = {
.p.name = "svq1",
.p.long_name = NULL_IF_CONFIG_SMALL("Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1"),
.p.type = AVMEDIA_TYPE_VIDEO,
.p.id = AV_CODEC_ID_SVQ1,
.priv_data_size = sizeof(SVQ1EncContext),
.p.priv_class = &svq1enc_class,
.init = svq1_encode_init,
FF_CODEC_ENCODE_CB(svq1_encode_frame),
.close = svq1_encode_end,
.p.pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV410P,
AV_PIX_FMT_NONE },
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
};
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