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Merge commit '4a0918cae6394e503b17c71f8f171b4a795eb849'

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* commit '4a0918cae6394e503b17c71f8f171b4a795eb849':
  sgienc: Support encoding high bit depth images with RLE

Merged-by: Hendrik Leppkes <h.leppkes@gmail.com>
This commit is contained in:
Hendrik Leppkes 2015-11-29 15:49:31 +01:00
commit 7c56b8792c
2 changed files with 12 additions and 10 deletions
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1
Changelog
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@ -36,6 +36,7 @@ version <next>:
- IVR demuxer
- compensationdelay filter
- acompressor filter
- support encoding 16-bit RLE SGI images
version 2.8:

21
libavcodec/sgienc.c
View File

@ -46,7 +46,10 @@ static int sgi_rle_encode(PutByteContext *pbc, const uint8_t *src,
int val, count, x, start = bytestream2_tell_p(pbc);
void (*bytestream2_put)(PutByteContext *, unsigned int);
bytestream2_put = bytestream2_put_byte;
if (bpp == 1)
bytestream2_put = bytestream2_put_byte;
else
bytestream2_put = bytestream2_put_be16;
for (x = 0; x < w; x += count) {
/* see if we can encode the next set of pixels with RLE */
@ -55,7 +58,7 @@ static int sgi_rle_encode(PutByteContext *pbc, const uint8_t *src,
if (bytestream2_get_bytes_left_p(pbc) < bpp * 2)
return AVERROR_INVALIDDATA;
val = *src;
val = bpp == 1 ? *src : AV_RB16(src);
bytestream2_put(pbc, count);
bytestream2_put(pbc, val);
} else {
@ -67,7 +70,7 @@ static int sgi_rle_encode(PutByteContext *pbc, const uint8_t *src,
bytestream2_put(pbc, count + 0x80);
for (i = 0; i < count; i++) {
val = src[i];
val = bpp == 1 ? src[i] : AV_RB16(src + i * bpp);
bytestream2_put(pbc, val);
}
}
@ -117,7 +120,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
case AV_PIX_FMT_GRAY16LE:
put_be = !HAVE_BIGENDIAN;
case AV_PIX_FMT_GRAY16BE:
avctx->coder_type = FF_CODER_TYPE_RAW;
bytes_per_channel = 2;
pixmax = 0xFFFF;
dimension = SGI_SINGLE_CHAN;
@ -126,7 +128,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
case AV_PIX_FMT_RGB48LE:
put_be = !HAVE_BIGENDIAN;
case AV_PIX_FMT_RGB48BE:
avctx->coder_type = FF_CODER_TYPE_RAW;
bytes_per_channel = 2;
pixmax = 0xFFFF;
dimension = SGI_MULTI_CHAN;
@ -135,7 +136,6 @@ FF_ENABLE_DEPRECATION_WARNINGS
case AV_PIX_FMT_RGBA64LE:
put_be = !HAVE_BIGENDIAN;
case AV_PIX_FMT_RGBA64BE:
avctx->coder_type = FF_CODER_TYPE_RAW;
bytes_per_channel = 2;
pixmax = 0xFFFF;
dimension = SGI_MULTI_CHAN;
@ -191,19 +191,20 @@ FF_ENABLE_DEPRECATION_WARNINGS
bytestream2_skip_p(&pbc, tablesize);
/* Make an intermediate consecutive buffer. */
if (!(encode_buf = av_malloc(width)))
if (!(encode_buf = av_malloc(width * bytes_per_channel)))
return AVERROR(ENOMEM);
for (z = 0; z < depth; z++) {
in_buf = p->data[0] + p->linesize[0] * (height - 1) + z;
in_buf = p->data[0] + p->linesize[0] * (height - 1) + z * bytes_per_channel;
for (y = 0; y < height; y++) {
bytestream2_put_be32(&taboff_pcb, bytestream2_tell_p(&pbc));
for (x = 0; x < width; x++)
for (x = 0; x < width * bytes_per_channel; x += bytes_per_channel)
encode_buf[x] = in_buf[depth * x];
length = sgi_rle_encode(&pbc, encode_buf, width, 1);
length = sgi_rle_encode(&pbc, encode_buf, width,
bytes_per_channel);
if (length < 1) {
av_free(encode_buf);
return -1;