int ff_h264_fill_default_ref_list(H264Context *h)
{
MpegEncContext * const s = &h->s;
int i, len;
if(h->slice_type_nos==FF_B_TYPE)
{
Picture *sorted[32];
int cur_poc, list;
int lens[2];
if(FIELD_PICTURE)
cur_poc= s->current_picture_ptr->field_poc[ s->picture_structure == PICT_BOTTOM_FIELD ];
else
cur_poc= s->current_picture_ptr->poc;
for(list= 0; list<2; list++)
{
len= add_sorted(sorted , h->short_ref, h->short_ref_count, cur_poc, 1^list);
len+=add_sorted(sorted+len, h->short_ref, h->short_ref_count, cur_poc, 0^list);
assert(len<=32);
len= build_def_list(h->default_ref_list[list] , sorted , len, 0, s->picture_structure);
len+=build_def_list(h->default_ref_list[list]+len, h->long_ref, 16 , 1, s->picture_structure);
assert(len<=32);
if(len < h->ref_count[list])
memset(&h->default_ref_list[list][len], 0, sizeof(Picture)*(h->ref_count[list] - len));
lens[list]= len;
}
if(lens[0] == lens[1] && lens[1] > 1)
{
for(i=0; h->default_ref_list[0][i].data[0] == h->default_ref_list[1][i].data[0] && i<lens[0]; i++);
if(i == lens[0])
FFSWAP(Picture, h->default_ref_list[1][0], h->default_ref_list[1][1]);
}
}
else
{
len = build_def_list(h->default_ref_list[0] , h->short_ref, h->short_ref_count, 0, s->picture_structure);
len+= build_def_list(h->default_ref_list[0]+len, h-> long_ref, 16 , 1, s->picture_structure);
assert(len <= 32);
if(len < h->ref_count[0])
memset(&h->default_ref_list[0][len], 0, sizeof(Picture)*(h->ref_count[0] - len));
}
#ifdef TRACE
for (i=0; i<h->ref_count[0]; i++)
{
tprintf(h->s.avctx, "List0: %s fn:%d 0x%p\n", (h->default_ref_list[0][i].long_ref ? "LT" : "ST"), h->default_ref_list[0][i].pic_id, h->default_ref_list[0][i].data[0]);
}
if(h->slice_type_nos==FF_B_TYPE)
{
for (i=0; i<h->ref_count[1]; i++)
{
tprintf(h->s.avctx, "List1: %s fn:%d 0x%p\n", (h->default_ref_list[1][i].long_ref ? "LT" : "ST"), h->default_ref_list[1][i].pic_id, h->default_ref_list[1][i].data[0]);
}
}
#endif
return 0;
}
static void do_swizzle(AVFrame *frame, int x, int y)
{
int i;
for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
uint8_t *src = frame->data[0] + i;
FFSWAP(uint8_t, src[x], src[y]);
}
}
static int32_t add_cb(int32_t a, int32_t b)
{
if (a < b)
FFSWAP(int32_t, a, b);
if (a - b >= 256)
return a;
return a + cb_to_add[a - b];
}
//FIXME merge with compute_pkt_fields
static int compute_pkt_fields2(AVFormatContext *s, AVStream *st, AVPacket *pkt)
{
int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
int num, den, i;
av_dlog(s, "compute_pkt_fields2: pts:%" PRId64 " dts:%" PRId64 " cur_dts:%" PRId64 " b:%d size:%d st:%d\n",
pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
/* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
* return AVERROR(EINVAL);*/
/* duration field */
if (pkt->duration == 0) {
ff_compute_frame_duration(s, &num, &den, st, NULL, pkt);
if (den && num) {
pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den * st->codec->ticks_per_frame, den * (int64_t)st->time_base.num);
}
}
if (pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay == 0)
pkt->pts = pkt->dts;
//calculate dts from pts
if (pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY) {
st->pts_buffer[0] = pkt->pts;
for (i = 1; i < delay + 1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
st->pts_buffer[i] = pkt->pts + (i - delay - 1) * pkt->duration;
for (i = 0; i<delay && st->pts_buffer[i] > st->pts_buffer[i + 1]; i++)
FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i + 1]);
pkt->dts = st->pts_buffer[0];
}
if (st->cur_dts && st->cur_dts != AV_NOPTS_VALUE &&
((!(s->oformat->flags & AVFMT_TS_NONSTRICT) &&
st->cur_dts >= pkt->dts) || st->cur_dts > pkt->dts)) {
av_log(s, AV_LOG_ERROR,
"Application provided invalid, non monotonically increasing dts to muxer in stream %d: %" PRId64 " >= %" PRId64 "\n",
st->index, st->cur_dts, pkt->dts);
return AVERROR(EINVAL);
}
if (pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts) {
av_log(s, AV_LOG_ERROR,
"pts %" PRId64 " < dts %" PRId64 " in stream %d\n",
pkt->pts, pkt->dts,
st->index);
return AVERROR(EINVAL);
}
av_dlog(s, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n",
pkt->pts, pkt->dts);
st->cur_dts = pkt->dts;
return 0;
}
void av_rc4_crypt(AVRC4 *r, uint8_t *dst, const uint8_t *src, int count, uint8_t *iv, int decrypt) {
uint8_t x = r->x, y = r->y;
uint8_t *state = r->state;
while (count-- > 0) {
uint8_t sum = state[x] + state[y];
FFSWAP(uint8_t, state[x], state[y]);
*dst++ = src ? *src++ ^ state[sum] : state[sum];
x++;
y += state[x];
}
r->x = x; r->y = y;
}
static void heap_sift(HeapElem *h, int root, int size)
{
while(root*2+1 < size) {
int child = root*2+1;
if(child < size-1 && h[child].val > h[child+1].val)
child++;
if(h[root].val > h[child].val) {
FFSWAP(HeapElem, h[root], h[child]);
root = child;
} else
break;
}
}
void ff_rc4_enc(const uint8_t *key, int keylen, uint8_t *data, int datalen) {
int i, j;
uint8_t x, y;
uint8_t state[256];
for (i = 0; i < 256; i++)
state[i] = i;
y = 0;
// j is i % keylen
for (j = 0, i = 0; i < 256; i++, j++) {
if (j == keylen) j = 0;
y += state[i] + key[j];
FFSWAP(uint8_t, state[i], state[y]);
}
// state initialized, now do the real encryption
x = 1; y = state[1];
while (datalen-- > 0) {
uint8_t sum = state[x] + state[y];
FFSWAP(uint8_t, state[x], state[y]);
*data++ ^= state[sum];
x++;
y += state[x];
}
}
/**
* nodes size must be 2*nb_codes
* first nb_codes nodes.count must be set
*/
int ff_huff_build_tree(AVCodecContext *avctx, VLC *vlc, int nb_codes,
Node *nodes, HuffCmp cmp, int flags)
{
int i, j;
int cur_node;
int64_t sum = 0;
for(i = 0; i < nb_codes; i++)
{
nodes[i].sym = i;
nodes[i].n0 = -2;
sum += nodes[i].count;
}
if(sum >> 31)
{
av_log(avctx, AV_LOG_ERROR, "Too high symbol frequencies. Tree construction is not possible\n");
return -1;
}
qsort(nodes, nb_codes, sizeof(Node), cmp);
cur_node = nb_codes;
nodes[nb_codes*2-1].count = 0;
for(i = 0; i < nb_codes * 2 - 1; i += 2)
{
nodes[cur_node].sym = HNODE;
nodes[cur_node].count = nodes[i].count + nodes[i+1].count;
nodes[cur_node].n0 = i;
for(j = cur_node; j > 0; j--)
{
if(nodes[j].count > nodes[j-1].count ||
(nodes[j].count == nodes[j-1].count &&
(!(flags & FF_HUFFMAN_FLAG_HNODE_FIRST) ||
nodes[j].n0 == j - 1 || nodes[j].n0 == j - 2 ||
(nodes[j].sym != HNODE && nodes[j-1].sym != HNODE))))
break;
FFSWAP(Node, nodes[j], nodes[j-1]);
}
cur_node++;
}
if(build_huff_tree(vlc, nodes, nb_codes * 2 - 2, flags) < 0)
{
av_log(avctx, AV_LOG_ERROR, "Error building tree\n");
return -1;
}
return 0;
}
static void swap_channel_layouts_on_filter(AVFilterContext *filter)
{
AVFilterLink *link = NULL;
uint64_t chlayout;
int i, j;
for (i = 0; i < filter->nb_inputs; i++) {
link = filter->inputs[i];
if (link->type == AVMEDIA_TYPE_AUDIO &&
link->out_channel_layouts->nb_channel_layouts == 1)
break;
}
if (i == filter->nb_inputs)
return;
chlayout = link->out_channel_layouts->channel_layouts[0];
for (i = 0; i < filter->nb_outputs; i++) {
AVFilterLink *outlink = filter->outputs[i];
int best_idx, best_score = INT_MIN;
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
outlink->in_channel_layouts->nb_channel_layouts < 2)
continue;
for (j = 0; j < outlink->in_channel_layouts->nb_channel_layouts; j++) {
uint64_t out_chlayout = outlink->in_channel_layouts->channel_layouts[j];
int matched_channels = av_get_channel_layout_nb_channels(chlayout &
out_chlayout);
int extra_channels = av_get_channel_layout_nb_channels(out_chlayout &
(~chlayout));
int score = matched_channels - extra_channels;
if (score > best_score) {
best_score = score;
best_idx = j;
}
}
FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0],
outlink->in_channel_layouts->channel_layouts[best_idx]);
}
}
int av_rc4_init(AVRC4 *r, const uint8_t *key, int key_bits, int decrypt) {
int i, j;
uint8_t y;
uint8_t *state = r->state;
int keylen = key_bits >> 3;
if (key_bits & 7)
return -1;
for (i = 0; i < 256; i++)
state[i] = i;
y = 0;
// j is i % keylen
for (j = 0, i = 0; i < 256; i++, j++) {
if (j == keylen) j = 0;
y += state[i] + key[j];
FFSWAP(uint8_t, state[i], state[y]);
}
r->x = 1;
r->y = state[1];
return 0;
}
static void h264_initialise_ref_list(H264Context *h, H264SliceContext *sl)
{
int i, len;
int j;
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
H264Picture *sorted[32];
int cur_poc, list;
int lens[2];
if (FIELD_PICTURE(h))
cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD];
else
cur_poc = h->cur_pic_ptr->poc;
for (list = 0; list < 2; list++) {
len = add_sorted(sorted, h->short_ref, h->short_ref_count, cur_poc, 1 ^ list);
len += add_sorted(sorted + len, h->short_ref, h->short_ref_count, cur_poc, 0 ^ list);
av_assert0(len <= 32);
len = build_def_list(sl->ref_list[list], FF_ARRAY_ELEMS(sl->ref_list[0]),
sorted, len, 0, h->picture_structure);
len += build_def_list(sl->ref_list[list] + len,
FF_ARRAY_ELEMS(sl->ref_list[0]) - len,
h->long_ref, 16, 1, h->picture_structure);
av_assert0(len <= 32);
if (len < sl->ref_count[list])
memset(&sl->ref_list[list][len], 0, sizeof(H264Ref) * (sl->ref_count[list] - len));
lens[list] = len;
}
if (lens[0] == lens[1] && lens[1] > 1) {
for (i = 0; i < lens[0] &&
sl->ref_list[0][i].parent->f->buf[0]->buffer ==
sl->ref_list[1][i].parent->f->buf[0]->buffer; i++);
if (i == lens[0]) {
FFSWAP(H264Ref, sl->ref_list[1][0], sl->ref_list[1][1]);
}
}
} else {
len = build_def_list(sl->ref_list[0], FF_ARRAY_ELEMS(sl->ref_list[0]),
h->short_ref, h->short_ref_count, 0, h->picture_structure);
len += build_def_list(sl->ref_list[0] + len,
FF_ARRAY_ELEMS(sl->ref_list[0]) - len,
h-> long_ref, 16, 1, h->picture_structure);
av_assert0(len <= 32);
if (len < sl->ref_count[0])
memset(&sl->ref_list[0][len], 0, sizeof(H264Ref) * (sl->ref_count[0] - len));
}
for (j = 0; j<1+(sl->slice_type_nos == AV_PICTURE_TYPE_B); j++) {
for (i = 0; i < sl->ref_count[j]; i++) {
if (sl->ref_list[j][i].parent) {
if (mismatches_ref(h, sl->ref_list[j][i].parent)) {
av_log(h->avctx, AV_LOG_ERROR, "Discarding mismatching reference\n");
memset(&sl->ref_list[j][i], 0, sizeof(sl->ref_list[j][i]));
}
}
}
}
for (i = 0; i < sl->list_count; i++)
h->default_ref[i] = sl->ref_list[i][0];
}
static void swap_channel_layouts_on_filter(AVFilterContext *filter)
{
AVFilterLink *link = NULL;
int i, j, k;
for (i = 0; i < filter->nb_inputs; i++) {
link = filter->inputs[i];
if (link->type == AVMEDIA_TYPE_AUDIO &&
link->out_channel_layouts->nb_channel_layouts == 1)
break;
}
if (i == filter->nb_inputs)
return;
for (i = 0; i < filter->nb_outputs; i++) {
AVFilterLink *outlink = filter->outputs[i];
int best_idx = -1, best_score = INT_MIN, best_count_diff = INT_MAX;
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
outlink->in_channel_layouts->nb_channel_layouts < 2)
continue;
for (j = 0; j < outlink->in_channel_layouts->nb_channel_layouts; j++) {
uint64_t in_chlayout = link->out_channel_layouts->channel_layouts[0];
uint64_t out_chlayout = outlink->in_channel_layouts->channel_layouts[j];
int in_channels = av_get_channel_layout_nb_channels(in_chlayout);
int out_channels = av_get_channel_layout_nb_channels(out_chlayout);
int count_diff = out_channels - in_channels;
int matched_channels, extra_channels;
int score = 100000;
if (FF_LAYOUT2COUNT(in_chlayout) || FF_LAYOUT2COUNT(out_chlayout)) {
/* Compute score in case the input or output layout encodes
a channel count; in this case the score is not altered by
the computation afterwards, as in_chlayout and
out_chlayout have both been set to 0 */
if (FF_LAYOUT2COUNT(in_chlayout))
in_channels = FF_LAYOUT2COUNT(in_chlayout);
if (FF_LAYOUT2COUNT(out_chlayout))
out_channels = FF_LAYOUT2COUNT(out_chlayout);
score -= 10000 + FFABS(out_channels - in_channels) +
(in_channels > out_channels ? 10000 : 0);
in_chlayout = out_chlayout = 0;
/* Let the remaining computation run, even if the score
value is not altered */
}
/* channel substitution */
for (k = 0; k < FF_ARRAY_ELEMS(ch_subst); k++) {
uint64_t cmp0 = ch_subst[k][0];
uint64_t cmp1 = ch_subst[k][1];
if (( in_chlayout & cmp0) && (!(out_chlayout & cmp0)) &&
(out_chlayout & cmp1) && (!( in_chlayout & cmp1))) {
in_chlayout &= ~cmp0;
out_chlayout &= ~cmp1;
/* add score for channel match, minus a deduction for
having to do the substitution */
score += 10 * av_get_channel_layout_nb_channels(cmp1) - 2;
}
}
/* no penalty for LFE channel mismatch */
if ( (in_chlayout & AV_CH_LOW_FREQUENCY) &&
(out_chlayout & AV_CH_LOW_FREQUENCY))
score += 10;
in_chlayout &= ~AV_CH_LOW_FREQUENCY;
out_chlayout &= ~AV_CH_LOW_FREQUENCY;
matched_channels = av_get_channel_layout_nb_channels(in_chlayout &
out_chlayout);
extra_channels = av_get_channel_layout_nb_channels(out_chlayout &
(~in_chlayout));
score += 10 * matched_channels - 5 * extra_channels;
if (score > best_score ||
(count_diff < best_count_diff && score == best_score)) {
best_score = score;
best_idx = j;
best_count_diff = count_diff;
}
}
av_assert0(best_idx >= 0);
FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0],
outlink->in_channel_layouts->channel_layouts[best_idx]);
}
}
static int zerocodec_decode_frame(AVCodecContext *avctx, void *data,
int *data_size, AVPacket *avpkt)
{
ZeroCodecContext *zc = avctx->priv_data;
AVFrame *pic = avctx->coded_frame;
AVFrame *prev_pic = &zc->previous_frame;
z_stream *zstream = &zc->zstream;
uint8_t *prev = prev_pic->data[0], *dst;
int i, j, zret;
pic->reference = 3;
if (avpkt->flags & AV_PKT_FLAG_KEY) {
pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
} else {
if (!prev) {
av_log(avctx, AV_LOG_ERROR, "Missing reference frame!\n");
return AVERROR_INVALIDDATA;
}
pic->key_frame = 0;
pic->pict_type = AV_PICTURE_TYPE_P;
}
if (avctx->get_buffer(avctx, pic) < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return AVERROR(ENOMEM);
}
zret = inflateReset(zstream);
if (zret != Z_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not reset inflate: %d\n", zret);
return AVERROR(EINVAL);
}
zstream->next_in = avpkt->data;
zstream->avail_in = avpkt->size;
dst = pic->data[0];
/**
* ZeroCodec has very simple interframe compression. If a value
* is the same as the previous frame, set it to 0.
*/
for (i = 0; i < avctx->height; i++) {
zstream->next_out = dst;
zstream->avail_out = avctx->width << 1;
zret = inflate(zstream, Z_SYNC_FLUSH);
if (zret != Z_OK && zret != Z_STREAM_END) {
av_log(avctx, AV_LOG_ERROR,
"Inflate failed with return code: %d\n", zret);
return AVERROR(EINVAL);
}
if (!(avpkt->flags & AV_PKT_FLAG_KEY))
for (j = 0; j < avctx->width << 1; j++)
dst[j] += prev[j] & -!dst[j];
prev += prev_pic->linesize[0];
dst += pic->linesize[0];
}
/* Release the previous buffer if need be */
if (prev_pic->data[0])
avctx->release_buffer(avctx, prev_pic);
*data_size = sizeof(AVFrame);
*(AVFrame *)data = *pic;
/* Store the previous frame for use later.
* FFSWAP ensures that e.g. pic->data is NULLed. */
FFSWAP(AVFrame, *pic, *prev_pic);
return avpkt->size;
}
static int scc_read_header(AVFormatContext *s)
{
SCCContext *scc = s->priv_data;
AVStream *st = avformat_new_stream(s, NULL);
char line[4096], line2[4096];
int count = 0, ret = 0;
ptrdiff_t len2, len;
uint8_t out[4096];
FFTextReader tr;
ff_text_init_avio(s, &tr, s->pb);
if (!st)
return AVERROR(ENOMEM);
avpriv_set_pts_info(st, 64, 1, 1000);
st->codecpar->codec_type = AVMEDIA_TYPE_SUBTITLE;
st->codecpar->codec_id = AV_CODEC_ID_EIA_608;
while (!ff_text_eof(&tr)) {
const int64_t pos = ff_text_pos(&tr);
char *saveptr = NULL, *lline;
int hh1, mm1, ss1, fs1, i;
int hh2, mm2, ss2, fs2;
int64_t ts_start, ts_end;
AVPacket *sub;
if (count == 0) {
while (!ff_text_eof(&tr)) {
len = ff_subtitles_read_line(&tr, line, sizeof(line));
if (len > 13)
break;
}
}
if (!strncmp(line, "Scenarist_SCC V1.0", 18))
continue;
if (sscanf(line, "%d:%d:%d%*[:;]%d", &hh1, &mm1, &ss1, &fs1) != 4)
continue;
ts_start = (hh1 * 3600LL + mm1 * 60LL + ss1) * 1000LL + fs1 * 33;
while (!ff_text_eof(&tr)) {
len2 = ff_subtitles_read_line(&tr, line2, sizeof(line2));
if (len2 > 13)
break;
}
if (sscanf(line2, "%d:%d:%d%*[:;]%d", &hh2, &mm2, &ss2, &fs2) != 4)
continue;
ts_end = (hh2 * 3600LL + mm2 * 60LL + ss2) * 1000LL + fs2 * 33;
count++;
lline = (char *)&line;
lline += 12;
for (i = 0; i < 4095; i += 3) {
char *ptr = av_strtok(lline, " ", &saveptr);
char c1, c2, c3, c4;
if (!ptr)
break;
if (sscanf(ptr, "%c%c%c%c", &c1, &c2, &c3, &c4) != 4)
break;
lline = NULL;
out[i+0] = 0xfc;
out[i+1] = convert(c2) | (convert(c1) << 4);
out[i+2] = convert(c4) | (convert(c3) << 4);
}
out[i] = 0;
sub = ff_subtitles_queue_insert(&scc->q, out, i, 0);
if (!sub)
return AVERROR(ENOMEM);
sub->pos = pos;
sub->pts = ts_start;
sub->duration = FFMAX(1200, ts_end - ts_start);
memmove(line, line2, sizeof(line));
FFSWAP(ptrdiff_t, len, len2);
}
ff_subtitles_queue_finalize(s, &scc->q);
return ret;
}
int ff_h264_fill_default_ref_list(H264Context *h, H264SliceContext *sl)
{
int i, len;
int j;
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
H264Picture *sorted[32];
int cur_poc, list;
int lens[2];
if (FIELD_PICTURE(h))
cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure == PICT_BOTTOM_FIELD];
else
cur_poc = h->cur_pic_ptr->poc;
for (list = 0; list < 2; list++) {
len = add_sorted(sorted, h->short_ref, h->short_ref_count, cur_poc, 1 ^ list);
len += add_sorted(sorted + len, h->short_ref, h->short_ref_count, cur_poc, 0 ^ list);
av_assert0(len <= 32);
len = build_def_list(h->default_ref_list[list], FF_ARRAY_ELEMS(h->default_ref_list[0]),
sorted, len, 0, h->picture_structure);
len += build_def_list(h->default_ref_list[list] + len,
FF_ARRAY_ELEMS(h->default_ref_list[0]) - len,
h->long_ref, 16, 1, h->picture_structure);
av_assert0(len <= 32);
if (len < sl->ref_count[list])
memset(&h->default_ref_list[list][len], 0, sizeof(H264Ref) * (sl->ref_count[list] - len));
lens[list] = len;
}
if (lens[0] == lens[1] && lens[1] > 1) {
for (i = 0; i < lens[0] &&
h->default_ref_list[0][i].parent->f->buf[0]->buffer ==
h->default_ref_list[1][i].parent->f->buf[0]->buffer; i++);
if (i == lens[0]) {
FFSWAP(H264Ref, h->default_ref_list[1][0], h->default_ref_list[1][1]);
}
}
} else {
len = build_def_list(h->default_ref_list[0], FF_ARRAY_ELEMS(h->default_ref_list[0]),
h->short_ref, h->short_ref_count, 0, h->picture_structure);
len += build_def_list(h->default_ref_list[0] + len,
FF_ARRAY_ELEMS(h->default_ref_list[0]) - len,
h-> long_ref, 16, 1, h->picture_structure);
av_assert0(len <= 32);
if (len < sl->ref_count[0])
memset(&h->default_ref_list[0][len], 0, sizeof(H264Ref) * (sl->ref_count[0] - len));
}
#ifdef TRACE
for (i = 0; i < sl->ref_count[0]; i++) {
ff_tlog(h->avctx, "List0: %s fn:%d 0x%p\n",
h->default_ref_list[0][i].parent ? (h->default_ref_list[0][i].parent->long_ref ? "LT" : "ST") : "NULL",
h->default_ref_list[0][i].pic_id,
h->default_ref_list[0][i].parent ? h->default_ref_list[0][i].parent->f->data[0] : 0);
}
if (sl->slice_type_nos == AV_PICTURE_TYPE_B) {
for (i = 0; i < sl->ref_count[1]; i++) {
ff_tlog(h->avctx, "List1: %s fn:%d 0x%p\n",
h->default_ref_list[1][i].parent ? (h->default_ref_list[1][i].parent->long_ref ? "LT" : "ST") : "NULL",
h->default_ref_list[1][i].pic_id,
h->default_ref_list[1][i].parent ? h->default_ref_list[1][i].parent->f->data[0] : 0);
}
}
#endif
for (j = 0; j<1+(sl->slice_type_nos == AV_PICTURE_TYPE_B); j++) {
for (i = 0; i < sl->ref_count[j]; i++) {
if (h->default_ref_list[j][i].parent) {
if (mismatches_ref(h, h->default_ref_list[j][i].parent)) {
av_log(h->avctx, AV_LOG_ERROR, "Discarding mismatching reference\n");
memset(&h->default_ref_list[j][i], 0, sizeof(h->default_ref_list[j][i]));
}
}
}
}
return 0;
}
static void run_postproc(AVCodecContext *avctx, AVFrame *frame)
{
DDSContext *ctx = avctx->priv_data;
int i, x_off;
switch (ctx->postproc) {
case DDS_ALPHA_EXP:
/* Alpha-exponential mode divides each channel by the maximum
* R, G or B value, and stores the multiplying factor in the
* alpha channel. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing alpha exponent.\n");
for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
uint8_t *src = frame->data[0] + i;
int r = src[0];
int g = src[1];
int b = src[2];
int a = src[3];
src[0] = r * a / 255;
src[1] = g * a / 255;
src[2] = b * a / 255;
src[3] = 255;
}
break;
case DDS_NORMAL_MAP:
/* Normal maps work in the XYZ color space and they encode
* X in R or in A, depending on the texture type, Y in G and
* derive Z with a square root of the distance.
*
* http://www.realtimecollisiondetection.net/blog/?p=28 */
av_log(avctx, AV_LOG_DEBUG, "Post-processing normal map.\n");
x_off = ctx->tex_ratio == 8 ? 0 : 3;
for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
uint8_t *src = frame->data[0] + i;
int x = src[x_off];
int y = src[1];
int z = 127;
int d = (255 * 255 - x * x - y * y) / 2;
if (d > 0)
z = lrint(sqrtf(d));
src[0] = x;
src[1] = y;
src[2] = z;
src[3] = 255;
}
break;
case DDS_RAW_YCOCG:
/* Data is Y-Co-Cg-A and not RGBA, but they are represented
* with the same masks in the DDPF header. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing raw YCoCg.\n");
for (i = 0; i < frame->linesize[0] * frame->height; i += 4) {
uint8_t *src = frame->data[0] + i;
int a = src[0];
int cg = src[1] - 128;
int co = src[2] - 128;
int y = src[3];
src[0] = av_clip_uint8(y + co - cg);
src[1] = av_clip_uint8(y + cg);
src[2] = av_clip_uint8(y - co - cg);
src[3] = a;
}
break;
case DDS_SWAP_ALPHA:
/* Alpha and Luma are stored swapped. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing swapped Luma/Alpha.\n");
for (i = 0; i < frame->linesize[0] * frame->height; i += 2) {
uint8_t *src = frame->data[0] + i;
FFSWAP(uint8_t, src[0], src[1]);
}
break;
case DDS_SWIZZLE_A2XY:
/* Swap R and G, often used to restore a standard RGTC2. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing A2XY swizzle.\n");
do_swizzle(frame, 0, 1);
break;
case DDS_SWIZZLE_RBXG:
/* Swap G and A, then B and new A (G). */
av_log(avctx, AV_LOG_DEBUG, "Post-processing RBXG swizzle.\n");
do_swizzle(frame, 1, 3);
do_swizzle(frame, 2, 3);
break;
case DDS_SWIZZLE_RGXB:
/* Swap B and A. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing RGXB swizzle.\n");
do_swizzle(frame, 2, 3);
break;
case DDS_SWIZZLE_RXBG:
/* Swap G and A. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing RXBG swizzle.\n");
do_swizzle(frame, 1, 3);
break;
case DDS_SWIZZLE_RXGB:
/* Swap R and A (misleading name). */
av_log(avctx, AV_LOG_DEBUG, "Post-processing RXGB swizzle.\n");
do_swizzle(frame, 0, 3);
break;
case DDS_SWIZZLE_XGBR:
/* Swap B and A, then R and new A (B). */
av_log(avctx, AV_LOG_DEBUG, "Post-processing XGBR swizzle.\n");
do_swizzle(frame, 2, 3);
do_swizzle(frame, 0, 3);
break;
case DDS_SWIZZLE_XGXR:
/* Swap G and A, then R and new A (G), then new R (G) and new G (A).
* This variant does not store any B component. */
av_log(avctx, AV_LOG_DEBUG, "Post-processing XGXR swizzle.\n");
do_swizzle(frame, 1, 3);
do_swizzle(frame, 0, 3);
do_swizzle(frame, 0, 1);
break;
case DDS_SWIZZLE_XRBG:
/* Swap G and A, then R and new A (G). */
av_log(avctx, AV_LOG_DEBUG, "Post-processing XRBG swizzle.\n");
do_swizzle(frame, 1, 3);
do_swizzle(frame, 0, 3);
break;
}
}
static void swap_channel_layouts_on_filter(AVFilterContext *filter)
{
AVFilterLink *link = NULL;
int i, j, k;
for (i = 0; i < filter->nb_inputs; i++) {
link = filter->inputs[i];
if (link->type == AVMEDIA_TYPE_AUDIO &&
link->out_channel_layouts->nb_channel_layouts == 1)
break;
}
if (i == filter->nb_inputs)
return;
for (i = 0; i < filter->nb_outputs; i++) {
AVFilterLink *outlink = filter->outputs[i];
int best_idx = -1, best_score = INT_MIN, best_count_diff = INT_MAX;
if (outlink->type != AVMEDIA_TYPE_AUDIO ||
outlink->in_channel_layouts->nb_channel_layouts < 2)
continue;
for (j = 0; j < outlink->in_channel_layouts->nb_channel_layouts; j++) {
uint64_t in_chlayout = link->out_channel_layouts->channel_layouts[0];
uint64_t out_chlayout = outlink->in_channel_layouts->channel_layouts[j];
int in_channels = av_get_channel_layout_nb_channels(in_chlayout);
int out_channels = av_get_channel_layout_nb_channels(out_chlayout);
int count_diff = out_channels - in_channels;
int matched_channels, extra_channels;
int score = 0;
/* channel substitution */
for (k = 0; k < FF_ARRAY_ELEMS(ch_subst); k++) {
uint64_t cmp0 = ch_subst[k][0];
uint64_t cmp1 = ch_subst[k][1];
if (( in_chlayout & cmp0) && (!(out_chlayout & cmp0)) &&
(out_chlayout & cmp1) && (!( in_chlayout & cmp1))) {
in_chlayout &= ~cmp0;
out_chlayout &= ~cmp1;
/* add score for channel match, minus a deduction for
having to do the substitution */
score += 10 * av_get_channel_layout_nb_channels(cmp1) - 2;
}
}
/* no penalty for LFE channel mismatch */
if ( (in_chlayout & AV_CH_LOW_FREQUENCY) &&
(out_chlayout & AV_CH_LOW_FREQUENCY))
score += 10;
in_chlayout &= ~AV_CH_LOW_FREQUENCY;
out_chlayout &= ~AV_CH_LOW_FREQUENCY;
matched_channels = av_get_channel_layout_nb_channels(in_chlayout &
out_chlayout);
extra_channels = av_get_channel_layout_nb_channels(out_chlayout &
(~in_chlayout));
score += 10 * matched_channels - 5 * extra_channels;
if (score > best_score ||
(count_diff < best_count_diff && score == best_score)) {
best_score = score;
best_idx = j;
best_count_diff = count_diff;
}
}
av_assert0(best_idx >= 0);
FFSWAP(uint64_t, outlink->in_channel_layouts->channel_layouts[0],
outlink->in_channel_layouts->channel_layouts[best_idx]);
}
}