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adapt to use interim palette control API; do away with multi-chunk data 

transfer to decoder

Originally committed as revision 2274 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Mike Melanson 2003-09-14 18:56:45 +00:00
parent 6423d073c9
commit b76c707acd
1 changed files with 24 additions and 22 deletions
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46
libavformat/ipmovie.c
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@ -121,6 +121,8 @@ typedef struct IPMVEContext {
offset_t next_chunk_offset;
AVPaletteControl palette_control;
} IPMVEContext;
static int load_ipmovie_packet(IPMVEContext *s, ByteIOContext *pb,
@ -165,38 +167,32 @@ static int load_ipmovie_packet(IPMVEContext *s, ByteIOContext *pb,
} else if (s->decode_map_chunk_offset) {
/* send both the decode map and the video data together */
if (av_new_packet(pkt, s->decode_map_chunk_size + s->video_chunk_size))
return CHUNK_NOMEM;
url_fseek(pb, s->decode_map_chunk_offset, SEEK_SET);
s->decode_map_chunk_offset = 0;
if (av_new_packet(pkt, s->decode_map_chunk_size))
return CHUNK_NOMEM;
pkt->stream_index = s->video_stream_index;
pkt->pts = s->video_pts;
if (get_buffer(pb, pkt->data, s->decode_map_chunk_size) !=
s->decode_map_chunk_size) {
av_free_packet(pkt);
return CHUNK_EOF;
}
chunk_type = CHUNK_VIDEO;
} else if (s->video_chunk_offset) {
url_fseek(pb, s->video_chunk_offset, SEEK_SET);
s->video_chunk_offset = 0;
if (av_new_packet(pkt, s->video_chunk_size))
return CHUNK_NOMEM;
pkt->stream_index = s->video_stream_index;
pkt->pts = s->video_pts;
if (get_buffer(pb, pkt->data, s->video_chunk_size) !=
s->video_chunk_size) {
if (get_buffer(pb, pkt->data + s->decode_map_chunk_size,
s->video_chunk_size) != s->video_chunk_size) {
av_free_packet(pkt);
return CHUNK_EOF;
}
pkt->stream_index = s->video_stream_index;
pkt->pts = s->video_pts;
s->video_pts += s->frame_pts_inc;
chunk_type = CHUNK_VIDEO;
@ -224,7 +220,7 @@ static int process_ipmovie_chunk(IPMVEContext *s, ByteIOContext *pb,
unsigned char opcode_version;
int opcode_size;
unsigned char scratch[1024];
int j;
int i, j;
int first_color, last_color;
int audio_flags;
@ -456,13 +452,15 @@ static int process_ipmovie_chunk(IPMVEContext *s, ByteIOContext *pb,
break;
}
j = 4; /* offset of first palette data */
#if 0
for (i = first_color; i <= last_color; i++) {
s->palette[i].r = scratch[j++] * 4;
s->palette[i].g = scratch[j++] * 4;
s->palette[i].b = scratch[j++] * 4;
/* the palette is stored as a 6-bit VGA palette, thus each
* component is shifted up to a 8-bit range */
s->palette_control.palette[i * 3 + 0] = scratch[j++] * 4;
s->palette_control.palette[i * 3 + 1] = scratch[j++] * 4;
s->palette_control.palette[i * 3 + 2] = scratch[j++] * 4;
}
#endif
/* indicate a palette change */
s->palette_control.palette_changed = 1;
break;
case OPCODE_SET_PALETTE_COMPRESSED:
@ -555,6 +553,10 @@ static int ipmovie_read_header(AVFormatContext *s,
st->codec.width = ipmovie->video_width;
st->codec.height = ipmovie->video_height;
/* palette considerations */
st->codec.extradata_size = sizeof(AVPaletteControl);
st->codec.extradata = &ipmovie->palette_control;
st = av_new_stream(s, 0);
if (!st)
return AVERROR_NOMEM;