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early-access version 1680

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pineappleEA
2021-05-13 11:45:27 +02:00
parent 1434d96e7d
commit 66ed389c6f
311 changed files with 6452 additions and 2597 deletions
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201
externals/ffmpeg/libavformat/smacker.c vendored
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@@ -48,16 +48,16 @@ typedef struct SmackerContext {
uint32_t *frm_size;
uint8_t *frm_flags;
/* internal variables */
int64_t next_frame_pos;
int cur_frame;
/* current frame for demuxing */
uint8_t pal[768];
int indexes[7];
int videoindex;
uint8_t *bufs[7];
int buf_sizes[7];
int stream_id[7];
int curstream;
int64_t nextpos;
int indexes[7];
/* current frame for demuxing */
uint32_t frame_size;
int flags;
int next_audio_index;
int new_palette;
uint8_t pal[768];
int64_t aud_pts[7];
} SmackerContext;
@@ -205,85 +205,75 @@ static int smacker_read_header(AVFormatContext *s)
avio_rl32(pb); /* padding */
/* setup data */
smk->frm_size = av_malloc_array(smk->frames, sizeof(*smk->frm_size));
smk->frm_flags = av_malloc(smk->frames);
if (!smk->frm_size || !smk->frm_flags) {
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
st->priv_data = av_malloc_array(smk->frames, sizeof(*smk->frm_size) +
sizeof(*smk->frm_flags));
if (!st->priv_data)
return AVERROR(ENOMEM);
}
smk->frm_size = st->priv_data;
smk->frm_flags = (void*)(smk->frm_size + smk->frames);
/* read frame info */
for (i = 0; i < smk->frames; i++) {
smk->frm_size[i] = avio_rl32(pb);
}
for (i = 0; i < smk->frames; i++) {
smk->frm_flags[i] = avio_r8(pb);
if ((ret = ffio_read_size(pb, smk->frm_flags, smk->frames)) < 0 ||
/* load trees to extradata, they will be unpacked by decoder */
(ret = ffio_read_size(pb, par->extradata + 16,
par->extradata_size - 16)) < 0) {
return ret;
}
/* load trees to extradata, they will be unpacked by decoder */
ret = avio_read(pb, par->extradata + 16, par->extradata_size - 16);
if (ret != par->extradata_size - 16) {
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
return AVERROR(EIO);
}
smk->curstream = -1;
smk->nextpos = avio_tell(pb);
return 0;
}
static int smacker_read_packet(AVFormatContext *s, AVPacket *pkt)
{
SmackerContext *smk = s->priv_data;
int flags;
int ret;
int i;
int frame_size = 0;
int palchange = 0;
if (avio_feof(s->pb) || smk->cur_frame >= smk->frames)
return AVERROR_EOF;
/* if we demuxed all streams, pass another frame */
if(smk->curstream < 0) {
avio_seek(s->pb, smk->nextpos, 0);
frame_size = smk->frm_size[smk->cur_frame] & (~3);
if (!smk->next_audio_index) {
smk->frame_size = smk->frm_size[smk->cur_frame] & (~3);
smk->next_frame_pos = avio_tell(s->pb) + smk->frame_size;
flags = smk->frm_flags[smk->cur_frame];
smk->flags = flags >> 1;
/* handle palette change event */
if(flags & SMACKER_PAL){
if (flags & SMACKER_PAL) {
int size, sz, t, off, j, pos;
uint8_t *pal = smk->pal;
uint8_t oldpal[768];
memcpy(oldpal, pal, 768);
size = avio_r8(s->pb);
size = size * 4 - 1;
if(size + 1 > frame_size)
return AVERROR_INVALIDDATA;
frame_size -= size;
frame_size--;
size = size * 4;
if (size > smk->frame_size) {
ret = AVERROR_INVALIDDATA;
goto next_frame;
}
smk->frame_size -= size--;
sz = 0;
pos = avio_tell(s->pb) + size;
while(sz < 256){
while (sz < 256) {
t = avio_r8(s->pb);
if(t & 0x80){ /* skip palette entries */
sz += (t & 0x7F) + 1;
if (t & 0x80) { /* skip palette entries */
sz += (t & 0x7F) + 1;
pal += ((t & 0x7F) + 1) * 3;
} else if(t & 0x40){ /* copy with offset */
} else if (t & 0x40) { /* copy with offset */
off = avio_r8(s->pb);
j = (t & 0x3F) + 1;
if (off + j > 0x100) {
av_log(s, AV_LOG_ERROR,
"Invalid palette update, offset=%d length=%d extends beyond palette size\n",
off, j);
return AVERROR_INVALIDDATA;
ret = AVERROR_INVALIDDATA;
goto next_frame;
}
off *= 3;
while(j-- && sz < 256) {
while (j-- && sz < 256) {
*pal++ = oldpal[off + 0];
*pal++ = oldpal[off + 1];
*pal++ = oldpal[off + 2];
@@ -298,79 +288,65 @@ static int smacker_read_packet(AVFormatContext *s, AVPacket *pkt)
}
}
avio_seek(s->pb, pos, 0);
palchange |= 1;
smk->new_palette = 1;
}
flags >>= 1;
smk->curstream = -1;
/* if audio chunks are present, put them to stack and retrieve later */
for(i = 0; i < 7; i++) {
if(flags & 1) {
uint32_t size;
int err;
size = avio_rl32(s->pb) - 4;
if (!size || size + 4LL > frame_size) {
av_log(s, AV_LOG_ERROR, "Invalid audio part size\n");
return AVERROR_INVALIDDATA;
}
frame_size -= size;
frame_size -= 4;
smk->curstream++;
if ((err = av_reallocp(&smk->bufs[smk->curstream], size)) < 0) {
smk->buf_sizes[smk->curstream] = 0;
return err;
}
smk->buf_sizes[smk->curstream] = size;
ret = avio_read(s->pb, smk->bufs[smk->curstream], size);
if(ret != size)
return AVERROR(EIO);
smk->stream_id[smk->curstream] = smk->indexes[i];
}
flags >>= 1;
}
if (frame_size < 0 || frame_size >= INT_MAX/2)
return AVERROR_INVALIDDATA;
if ((ret = av_new_packet(pkt, frame_size + 769)) < 0)
return ret;
if(smk->frm_size[smk->cur_frame] & 1)
palchange |= 2;
pkt->data[0] = palchange;
memcpy(pkt->data + 1, smk->pal, 768);
ret = avio_read(s->pb, pkt->data + 769, frame_size);
if(ret != frame_size)
return AVERROR(EIO);
pkt->stream_index = smk->videoindex;
pkt->pts = smk->cur_frame;
pkt->size = ret + 769;
smk->cur_frame++;
smk->nextpos = avio_tell(s->pb);
} else {
if (smk->stream_id[smk->curstream] < 0 || !smk->bufs[smk->curstream])
return AVERROR_INVALIDDATA;
if ((ret = av_new_packet(pkt, smk->buf_sizes[smk->curstream])) < 0)
return ret;
memcpy(pkt->data, smk->bufs[smk->curstream], smk->buf_sizes[smk->curstream]);
pkt->size = smk->buf_sizes[smk->curstream];
pkt->stream_index = smk->stream_id[smk->curstream];
pkt->pts = smk->aud_pts[smk->curstream];
smk->aud_pts[smk->curstream] += AV_RL32(pkt->data);
smk->curstream--;
}
return 0;
}
for (int i = smk->next_audio_index; i < 7; i++) {
if (smk->flags & (1 << i)) {
uint32_t size;
static int smacker_read_close(AVFormatContext *s)
{
SmackerContext *smk = s->priv_data;
int i;
size = avio_rl32(s->pb);
if ((int)size < 8 || size > smk->frame_size) {
av_log(s, AV_LOG_ERROR, "Invalid audio part size\n");
ret = AVERROR_INVALIDDATA;
goto next_frame;
}
smk->frame_size -= size;
size -= 4;
for(i = 0; i < 7; i++)
av_freep(&smk->bufs[i]);
av_freep(&smk->frm_size);
av_freep(&smk->frm_flags);
if (smk->indexes[i] < 0) {
avio_skip(s->pb, size);
continue;
}
if ((ret = av_get_packet(s->pb, pkt, size)) != size) {
ret = ret < 0 ? ret : AVERROR_INVALIDDATA;
goto next_frame;
}
pkt->stream_index = smk->indexes[i];
pkt->pts = smk->aud_pts[i];
smk->aud_pts[i] += AV_RL32(pkt->data);
smk->next_audio_index = i + 1;
return 0;
}
}
if (smk->frame_size >= INT_MAX/2) {
ret = AVERROR_INVALIDDATA;
goto next_frame;
}
if ((ret = av_new_packet(pkt, smk->frame_size + 769)) < 0)
goto next_frame;
flags = smk->new_palette;
if (smk->frm_size[smk->cur_frame] & 1)
flags |= 2;
pkt->data[0] = flags;
memcpy(pkt->data + 1, smk->pal, 768);
ret = ffio_read_size(s->pb, pkt->data + 769, smk->frame_size);
if (ret < 0)
goto next_frame;
pkt->stream_index = smk->videoindex;
pkt->pts = smk->cur_frame;
smk->next_audio_index = 0;
smk->new_palette = 0;
smk->cur_frame++;
return 0;
next_frame:
avio_seek(s->pb, smk->next_frame_pos, SEEK_SET);
smk->next_audio_index = 0;
smk->cur_frame++;
return ret;
}
AVInputFormat ff_smacker_demuxer = {
@@ -380,5 +356,4 @@ AVInputFormat ff_smacker_demuxer = {
.read_probe = smacker_probe,
.read_header = smacker_read_header,
.read_packet = smacker_read_packet,
.read_close = smacker_read_close,
};