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sgienc: Port to bytestream2

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This commit is contained in:
Vittorio Giovara 2015-11-20 02:17:32 +01:00
parent 99f40fd02f
commit 62cc8f4d79
1 changed files with 34 additions and 30 deletions
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64
libavcodec/sgienc.c
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@ -43,11 +43,11 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
const AVFrame * const p = frame;
uint8_t *offsettab, *lengthtab, *in_buf, *encode_buf, *buf;
PutByteContext pbc;
uint8_t *in_buf, *encode_buf;
int x, y, z, length, tablesize, ret;
unsigned int width, height, depth, dimension;
unsigned int bytes_per_channel, pixmax, put_be;
unsigned char *end_buf;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
@ -117,40 +117,41 @@ FF_ENABLE_DEPRECATION_WARNINGS
av_log(avctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", length);
return ret;
}
buf = pkt->data;
end_buf = pkt->data + pkt->size;
bytestream2_init_writer(&pbc, pkt->data, pkt->size);
/* Encode header. */
bytestream_put_be16(&buf, SGI_MAGIC);
bytestream_put_byte(&buf, avctx->coder_type != FF_CODER_TYPE_RAW); /* RLE 1 - VERBATIM 0*/
bytestream_put_byte(&buf, bytes_per_channel);
bytestream_put_be16(&buf, dimension);
bytestream_put_be16(&buf, width);
bytestream_put_be16(&buf, height);
bytestream_put_be16(&buf, depth);
bytestream2_put_be16(&pbc, SGI_MAGIC);
bytestream2_put_byte(&pbc, avctx->coder_type != FF_CODER_TYPE_RAW); /* RLE 1 - VERBATIM 0 */
bytestream2_put_byte(&pbc, bytes_per_channel);
bytestream2_put_be16(&pbc, dimension);
bytestream2_put_be16(&pbc, width);
bytestream2_put_be16(&pbc, height);
bytestream2_put_be16(&pbc, depth);
bytestream_put_be32(&buf, 0L); /* pixmin */
bytestream_put_be32(&buf, pixmax);
bytestream_put_be32(&buf, 0L); /* dummy */
bytestream2_put_be32(&pbc, 0L); /* pixmin */
bytestream2_put_be32(&pbc, pixmax);
bytestream2_put_be32(&pbc, 0L); /* dummy */
/* name */
memset(buf, 0, SGI_HEADER_SIZE);
buf += 80;
bytestream2_skip_p(&pbc, 80);
/* colormap */
bytestream_put_be32(&buf, 0L);
bytestream2_put_be32(&pbc, 0L);
/* The rest of the 512 byte header is unused. */
buf += 404;
offsettab = buf;
bytestream2_skip_p(&pbc, 404);
if (avctx->coder_type != FF_CODER_TYPE_RAW) {
PutByteContext taboff_pcb, tablen_pcb;
/* Skip RLE offset table. */
buf += tablesize;
lengthtab = buf;
bytestream2_init_writer(&taboff_pcb, pbc.buffer, tablesize);
bytestream2_skip_p(&pbc, tablesize);
/* Skip RLE length table. */
buf += tablesize;
bytestream2_init_writer(&tablen_pcb, pbc.buffer, tablesize);
bytestream2_skip_p(&pbc, tablesize);
/* Make an intermediate consecutive buffer. */
if (!(encode_buf = av_malloc(width)))
@ -160,18 +161,21 @@ FF_ENABLE_DEPRECATION_WARNINGS
in_buf = p->data[0] + p->linesize[0] * (height - 1) + z;
for (y = 0; y < height; y++) {
bytestream_put_be32(&offsettab, buf - pkt->data);
bytestream2_put_be32(&taboff_pcb, bytestream2_tell_p(&pbc));
for (x = 0; x < width; x++)
encode_buf[x] = in_buf[depth * x];
if ((length = ff_rle_encode(buf, end_buf - buf - 1, encode_buf, 1, width, 0, 0, 0x80, 0)) < 1) {
length = ff_rle_encode(pbc.buffer,
bytestream2_get_bytes_left_p(&pbc),
encode_buf, 1, width, 0, 0, 0x80, 0);
if (length < 1) {
av_free(encode_buf);
return -1;
}
buf += length;
bytestream_put_be32(&lengthtab, length);
bytestream2_skip_p(&pbc, length);
bytestream2_put_be32(&tablen_pcb, length);
in_buf -= p->linesize[0];
}
}
@ -184,12 +188,12 @@ FF_ENABLE_DEPRECATION_WARNINGS
for (y = 0; y < height; y++) {
for (x = 0; x < width * depth; x += depth)
if (bytes_per_channel == 1)
bytestream_put_byte(&buf, in_buf[x]);
bytestream2_put_byte(&pbc, in_buf[x]);
else
if (put_be)
bytestream_put_be16(&buf, ((uint16_t *)in_buf)[x]);
bytestream2_put_be16(&pbc, ((uint16_t *)in_buf)[x]);
else
bytestream_put_le16(&buf, ((uint16_t *)in_buf)[x]);
bytestream2_put_le16(&pbc, ((uint16_t *)in_buf)[x]);
in_buf -= p->linesize[0];
}
@ -197,7 +201,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
}
/* total length */
pkt->size = buf - pkt->data;
pkt->size = bytestream2_tell_p(&pbc);
pkt->flags |= AV_PKT_FLAG_KEY;
*got_packet = 1;