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Replace scaling byte with explicit display size

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If the intended display size is different than the size the frame is
coded at, then send that size explicitly in the bitstream. Adds a new
bit to the frame header to indicate whether the extra size fields
are present.

Change-Id: I525c66f22d207efaf1e5f903c6a2a91b80245854
This commit is contained in:
John Koleszar
2013-03-14 14:36:08 -07:00
parent c5b317057b
commit 8a3f55f2d4
4 changed files with 48 additions and 44 deletions
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4
vp9/common/vp9_onyxc_int.h
View File

@@ -169,10 +169,10 @@ typedef struct VP9Common {
int Width;
int Height;
int display_width;
int display_height;
int last_width;
int last_height;
int horiz_scale;
int vert_scale;
YUV_TYPE clr_type;
CLAMP_TYPE clamp_type;

25
vp9/decoder/vp9_decodframe.c
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@@ -1275,12 +1275,13 @@ int vp9_decode_frame(VP9D_COMP *pbi, const unsigned char **p_data_end) {
if (data_end - data < 3) {
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME, "Truncated packet");
} else {
int scaling_active;
pc->last_frame_type = pc->frame_type;
pc->frame_type = (FRAME_TYPE)(data[0] & 1);
pc->version = (data[0] >> 1) & 7;
pc->show_frame = (data[0] >> 4) & 1;
first_partition_length_in_bytes =
(data[0] | (data[1] << 8) | (data[2] << 16)) >> 5;
scaling_active = (data[0] >> 5) & 1;
first_partition_length_in_bytes = data[1] | (data[2] << 8);
if (!read_is_valid(data, first_partition_length_in_bytes, data_end))
vpx_internal_error(&pc->error, VPX_CODEC_CORRUPT_FRAME,
@@ -1310,14 +1311,20 @@ int vp9_decode_frame(VP9D_COMP *pbi, const unsigned char **p_data_end) {
* if we have enough data. Otherwise we will end up with the wrong
* size.
*/
if (data + 5 < data_end) {
pc->Width = read_le16(data);
pc->Height = read_le16(data + 2);
pc->horiz_scale = data[4] >> 4;
pc->vert_scale = data[4] & 0x0F;
if (scaling_active && data + 4 < data_end) {
pc->display_width = read_le16(data + 0);
pc->display_height = read_le16(data + 2);
data += 4;
}
if (data + 4 < data_end) {
pc->Width = read_le16(data + 0);
pc->Height = read_le16(data + 2);
data += 4;
}
if (!scaling_active) {
pc->display_width = pc->Width;
pc->display_height = pc->Height;
}
data += 5;
if (width != pc->Width || height != pc->Height) {
if (pc->Width <= 0) {

26
vp9/encoder/vp9_bitstream.c
View File

@@ -2270,7 +2270,18 @@ void vp9_pack_bitstream(VP9_COMP *cpi, unsigned char *dest,
{
int v;
// support arbitrary resolutions
if (pc->Width != pc->display_width || pc->Height != pc->display_height) {
v = pc->display_width;
cx_data[0] = v;
cx_data[1] = v >> 8;
v = pc->display_height;
cx_data[2] = v;
cx_data[3] = v >> 8;
cx_data += 4;
extra_bytes_packed += 4;
}
v = pc->Width;
cx_data[0] = v;
cx_data[1] = v >> 8;
@@ -2279,11 +2290,8 @@ void vp9_pack_bitstream(VP9_COMP *cpi, unsigned char *dest,
cx_data[2] = v;
cx_data[3] = v >> 8;
// use a separate byte to store the scale factors, each ranging 0-15
cx_data[4] = (pc->horiz_scale << 4) | (pc->vert_scale);
extra_bytes_packed += 5;
cx_data += 5;
extra_bytes_packed += 4;
cx_data += 4;
}
vp9_start_encode(&header_bc, cx_data);
@@ -2801,11 +2809,15 @@ void vp9_pack_bitstream(VP9_COMP *cpi, unsigned char *dest,
/* update frame tag */
{
int v = (oh.first_partition_length_in_bytes << 5) |
int scaling = (pc->Width != pc->display_width
|| pc->Height != pc->display_height);
int v = (oh.first_partition_length_in_bytes << 8) |
(scaling << 5) |
(oh.show_frame << 4) |
(oh.version << 1) |
oh.type;
assert(oh.first_partition_length_in_bytes <= 0xffff);
dest[0] = v;
dest[1] = v >> 8;
dest[2] = v >> 16;

37
vp9/encoder/vp9_onyx_if.c
View File

@@ -1115,6 +1115,9 @@ static void init_config(VP9_PTR ptr, VP9_CONFIG *oxcf) {
cm->version = oxcf->Version;
vp9_setup_version(cm);
cm->Width = oxcf->Width;
cm->Height = oxcf->Height;
// change includes all joint functionality
vp9_change_config(ptr, oxcf);
@@ -1299,8 +1302,8 @@ void vp9_change_config(VP9_PTR ptr, VP9_CONFIG *oxcf) {
cpi->target_bandwidth = cpi->oxcf.target_bandwidth;
cm->Width = cpi->oxcf.Width;
cm->Height = cpi->oxcf.Height;
cm->display_width = cpi->oxcf.Width;
cm->display_height = cpi->oxcf.Height;
// VP8 sharpness level mapping 0-7 (vs 0-10 in general VPx dialogs)
if (cpi->oxcf.Sharpness > 7)
@@ -1308,18 +1311,6 @@ void vp9_change_config(VP9_PTR ptr, VP9_CONFIG *oxcf) {
cm->sharpness_level = cpi->oxcf.Sharpness;
if (cm->horiz_scale != NORMAL || cm->vert_scale != NORMAL) {
int UNINITIALIZED_IS_SAFE(hr), UNINITIALIZED_IS_SAFE(hs);
int UNINITIALIZED_IS_SAFE(vr), UNINITIALIZED_IS_SAFE(vs);
Scale2Ratio(cm->horiz_scale, &hr, &hs);
Scale2Ratio(cm->vert_scale, &vr, &vs);
// always go to the next whole number
cm->Width = (hs - 1 + cpi->oxcf.Width * hr) / hs;
cm->Height = (vs - 1 + cpi->oxcf.Height * vr) / vs;
}
// Increasing the size of the frame beyond the first seen frame, or some
// otherwise signalled maximum size, is not supported.
// TODO(jkoleszar): exit gracefully.
@@ -4149,6 +4140,7 @@ int vp9_set_internal_size(VP9_PTR comp,
VPX_SCALING horiz_mode, VPX_SCALING vert_mode) {
VP9_COMP *cpi = (VP9_COMP *) comp;
VP9_COMMON *cm = &cpi->common;
int hr = 0, hs = 0, vr = 0, vs = 0;
if (horiz_mode > ONETWO)
return -1;
@@ -4156,20 +4148,13 @@ int vp9_set_internal_size(VP9_PTR comp,
if (vert_mode > ONETWO)
return -1;
if (cm->horiz_scale != horiz_mode || cm->vert_scale != vert_mode) {
int UNINITIALIZED_IS_SAFE(hr), UNINITIALIZED_IS_SAFE(hs);
int UNINITIALIZED_IS_SAFE(vr), UNINITIALIZED_IS_SAFE(vs);
Scale2Ratio(horiz_mode, &hr, &hs);
Scale2Ratio(vert_mode, &vr, &vs);
cm->horiz_scale = horiz_mode;
cm->vert_scale = vert_mode;
// always go to the next whole number
cm->Width = (hs - 1 + cpi->oxcf.Width * hr) / hs;
cm->Height = (vs - 1 + cpi->oxcf.Height * vr) / vs;
Scale2Ratio(cm->horiz_scale, &hr, &hs);
Scale2Ratio(cm->vert_scale, &vr, &vs);
// always go to the next whole number
cm->Width = (hs - 1 + cpi->oxcf.Width * hr) / hs;
cm->Height = (vs - 1 + cpi->oxcf.Height * vr) / vs;
}
assert(cm->Width <= cpi->initial_width);
assert(cm->Height <= cpi->initial_height);
update_frame_size(cpi);