/**************************************************************************
*
* Copyright 2009 Younes Manton.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <math.h>
#include <assert.h>
#include "util/u_memory.h"
#include "util/u_sampler.h"
#include "util/u_surface.h"
#include "util/u_video.h"
#include "vl_mpeg12_decoder.h"
#include "vl_defines.h"
#define SCALE_FACTOR_SNORM (32768.0f / 256.0f)
#define SCALE_FACTOR_SSCALED (1.0f / 256.0f)
struct format_config {
enum pipe_format zscan_source_format;
enum pipe_format idct_source_format;
enum pipe_format mc_source_format;
float idct_scale;
float mc_scale;
};
static const struct format_config bitstream_format_config[] = {
// { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R16G16B16A16_FLOAT, 1.0f, SCALE_FACTOR_SSCALED },
// { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, 1.0f, SCALE_FACTOR_SSCALED },
{ PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R16G16B16A16_FLOAT, 1.0f, SCALE_FACTOR_SNORM },
{ PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, 1.0f, SCALE_FACTOR_SNORM }
};
static const unsigned num_bitstream_format_configs =
sizeof(bitstream_format_config) / sizeof(struct format_config);
static const struct format_config idct_format_config[] = {
// { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R16G16B16A16_FLOAT, 1.0f, SCALE_FACTOR_SSCALED },
// { PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, PIPE_FORMAT_R16G16B16A16_SSCALED, 1.0f, SCALE_FACTOR_SSCALED },
{ PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R16G16B16A16_FLOAT, 1.0f, SCALE_FACTOR_SNORM },
{ PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, PIPE_FORMAT_R16G16B16A16_SNORM, 1.0f, SCALE_FACTOR_SNORM }
};
static const unsigned num_idct_format_configs =
sizeof(idct_format_config) / sizeof(struct format_config);
static const struct format_config mc_format_config[] = {
//{ PIPE_FORMAT_R16_SSCALED, PIPE_FORMAT_NONE, PIPE_FORMAT_R16_SSCALED, 0.0f, SCALE_FACTOR_SSCALED },
{ PIPE_FORMAT_R16_SNORM, PIPE_FORMAT_NONE, PIPE_FORMAT_R16_SNORM, 0.0f, SCALE_FACTOR_SNORM }
};
static const unsigned num_mc_format_configs =
sizeof(mc_format_config) / sizeof(struct format_config);
static const unsigned const_empty_block_mask_420[3][2][2] = {
{ { 0x20, 0x10 }, { 0x08, 0x04 } },
{ { 0x02, 0x02 }, { 0x02, 0x02 } },
{ { 0x01, 0x01 }, { 0x01, 0x01 } }
};
struct video_buffer_private
{
struct list_head list;
struct pipe_video_buffer *video_buffer;
struct pipe_sampler_view *sampler_view_planes[VL_NUM_COMPONENTS];
struct pipe_surface *surfaces[VL_MAX_SURFACES];
struct vl_mpeg12_buffer *buffer;
};
static void
vl_mpeg12_destroy_buffer(struct vl_mpeg12_buffer *buf);
static void
destroy_video_buffer_private(void *private)
{
struct video_buffer_private *priv = private;
unsigned i;
list_del(&priv->list);
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
pipe_sampler_view_reference(&priv->sampler_view_planes[i], NULL);
for (i = 0; i < VL_MAX_SURFACES; ++i)
pipe_surface_reference(&priv->surfaces[i], NULL);
if (priv->buffer)
vl_mpeg12_destroy_buffer(priv->buffer);
FREE(priv);
}
static struct video_buffer_private *
get_video_buffer_private(struct vl_mpeg12_decoder *dec, struct pipe_video_buffer *buf)
{
struct pipe_context *pipe = dec->context;
struct video_buffer_private *priv;
struct pipe_sampler_view **sv;
struct pipe_surface **surf;
unsigned i;
priv = vl_video_buffer_get_associated_data(buf, &dec->base);
if (priv)
return priv;
priv = CALLOC_STRUCT(video_buffer_private);
list_add(&priv->list, &dec->buffer_privates);
priv->video_buffer = buf;
sv = buf->get_sampler_view_planes(buf);
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
if (sv[i])
priv->sampler_view_planes[i] = pipe->create_sampler_view(pipe, sv[i]->texture, sv[i]);
surf = buf->get_surfaces(buf);
for (i = 0; i < VL_MAX_SURFACES; ++i)
if (surf[i])
priv->surfaces[i] = pipe->create_surface(pipe, surf[i]->texture, surf[i]);
vl_video_buffer_set_associated_data(buf, &dec->base, priv, destroy_video_buffer_private);
return priv;
}
static void
free_video_buffer_privates(struct vl_mpeg12_decoder *dec)
{
struct video_buffer_private *priv, *next;
LIST_FOR_EACH_ENTRY_SAFE(priv, next, &dec->buffer_privates, list) {
struct pipe_video_buffer *buf = priv->video_buffer;
vl_video_buffer_set_associated_data(buf, &dec->base, NULL, NULL);
}
}
static bool
init_zscan_buffer(struct vl_mpeg12_decoder *dec, struct vl_mpeg12_buffer *buffer)
{
struct pipe_resource *res, res_tmpl;
struct pipe_sampler_view sv_tmpl;
struct pipe_surface **destination;
unsigned i;
assert(dec && buffer);
memset(&res_tmpl, 0, sizeof(res_tmpl));
res_tmpl.target = PIPE_TEXTURE_2D;
res_tmpl.format = dec->zscan_source_format;
res_tmpl.width0 = dec->blocks_per_line * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
res_tmpl.height0 = align(dec->num_blocks, dec->blocks_per_line) / dec->blocks_per_line;
res_tmpl.depth0 = 1;
res_tmpl.array_size = 1;
res_tmpl.usage = PIPE_USAGE_STREAM;
res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
res = dec->context->screen->resource_create(dec->context->screen, &res_tmpl);
if (!res)
goto error_source;
memset(&sv_tmpl, 0, sizeof(sv_tmpl));
u_sampler_view_default_template(&sv_tmpl, res, res->format);
sv_tmpl.swizzle_r = sv_tmpl.swizzle_g = sv_tmpl.swizzle_b = sv_tmpl.swizzle_a = PIPE_SWIZZLE_X;
buffer->zscan_source = dec->context->create_sampler_view(dec->context, res, &sv_tmpl);
pipe_resource_reference(&res, NULL);
if (!buffer->zscan_source)
goto error_sampler;
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
destination = dec->idct_source->get_surfaces(dec->idct_source);
else
destination = dec->mc_source->get_surfaces(dec->mc_source);
if (!destination)
goto error_surface;
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
if (!vl_zscan_init_buffer(i == 0 ? &dec->zscan_y : &dec->zscan_c,
&buffer->zscan[i], buffer->zscan_source, destination[i]))
goto error_plane;
return true;
error_plane:
for (; i > 0; --i)
vl_zscan_cleanup_buffer(&buffer->zscan[i - 1]);
error_surface:
error_sampler:
pipe_sampler_view_reference(&buffer->zscan_source, NULL);
error_source:
return false;
}
static void
cleanup_zscan_buffer(struct vl_mpeg12_buffer *buffer)
{
unsigned i;
assert(buffer);
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
vl_zscan_cleanup_buffer(&buffer->zscan[i]);
pipe_sampler_view_reference(&buffer->zscan_source, NULL);
}
static bool
init_idct_buffer(struct vl_mpeg12_decoder *dec, struct vl_mpeg12_buffer *buffer)
{
struct pipe_sampler_view **idct_source_sv, **mc_source_sv;
unsigned i;
assert(dec && buffer);
idct_source_sv = dec->idct_source->get_sampler_view_planes(dec->idct_source);
if (!idct_source_sv)
goto error_source_sv;
mc_source_sv = dec->mc_source->get_sampler_view_planes(dec->mc_source);
if (!mc_source_sv)
goto error_mc_source_sv;
for (i = 0; i < 3; ++i)
if (!vl_idct_init_buffer(i == 0 ? &dec->idct_y : &dec->idct_c,
&buffer->idct[i], idct_source_sv[i],
mc_source_sv[i]))
goto error_plane;
return true;
error_plane:
for (; i > 0; --i)
vl_idct_cleanup_buffer(&buffer->idct[i - 1]);
error_mc_source_sv:
error_source_sv:
return false;
}
static void
cleanup_idct_buffer(struct vl_mpeg12_buffer *buf)
{
unsigned i;
assert(buf);
for (i = 0; i < 3; ++i)
vl_idct_cleanup_buffer(&buf->idct[i]);
}
static bool
init_mc_buffer(struct vl_mpeg12_decoder *dec, struct vl_mpeg12_buffer *buf)
{
assert(dec && buf);
if(!vl_mc_init_buffer(&dec->mc_y, &buf->mc[0]))
goto error_mc_y;
if(!vl_mc_init_buffer(&dec->mc_c, &buf->mc[1]))
goto error_mc_cb;
if(!vl_mc_init_buffer(&dec->mc_c, &buf->mc[2]))
goto error_mc_cr;
return true;
error_mc_cr:
vl_mc_cleanup_buffer(&buf->mc[1]);
error_mc_cb:
vl_mc_cleanup_buffer(&buf->mc[0]);
error_mc_y:
return false;
}
static void
cleanup_mc_buffer(struct vl_mpeg12_buffer *buf)
{
unsigned i;
assert(buf);
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
vl_mc_cleanup_buffer(&buf->mc[i]);
}
static inline void
MacroBlockTypeToPipeWeights(const struct pipe_mpeg12_macroblock *mb, unsigned weights[2])
{
assert(mb);
switch (mb->macroblock_type & (PIPE_MPEG12_MB_TYPE_MOTION_FORWARD | PIPE_MPEG12_MB_TYPE_MOTION_BACKWARD)) {
case PIPE_MPEG12_MB_TYPE_MOTION_FORWARD:
weights[0] = PIPE_VIDEO_MV_WEIGHT_MAX;
weights[1] = PIPE_VIDEO_MV_WEIGHT_MIN;
break;
case (PIPE_MPEG12_MB_TYPE_MOTION_FORWARD | PIPE_MPEG12_MB_TYPE_MOTION_BACKWARD):
weights[0] = PIPE_VIDEO_MV_WEIGHT_HALF;
weights[1] = PIPE_VIDEO_MV_WEIGHT_HALF;
break;
case PIPE_MPEG12_MB_TYPE_MOTION_BACKWARD:
weights[0] = PIPE_VIDEO_MV_WEIGHT_MIN;
weights[1] = PIPE_VIDEO_MV_WEIGHT_MAX;
break;
default:
if (mb->macroblock_type & PIPE_MPEG12_MB_TYPE_INTRA) {
weights[0] = PIPE_VIDEO_MV_WEIGHT_MIN;
weights[1] = PIPE_VIDEO_MV_WEIGHT_MIN;
} else {
/* no motion vector, but also not intra mb ->
just copy the old frame content */
weights[0] = PIPE_VIDEO_MV_WEIGHT_MAX;
weights[1] = PIPE_VIDEO_MV_WEIGHT_MIN;
}
break;
}
}
static inline struct vl_motionvector
MotionVectorToPipe(const struct pipe_mpeg12_macroblock *mb, unsigned vector,
unsigned field_select_mask, unsigned weight)
{
struct vl_motionvector mv;
assert(mb);
if (mb->macroblock_type & (PIPE_MPEG12_MB_TYPE_MOTION_FORWARD | PIPE_MPEG12_MB_TYPE_MOTION_BACKWARD)) {
switch (mb->macroblock_modes.bits.frame_motion_type) {
case PIPE_MPEG12_MO_TYPE_FRAME:
mv.top.x = mb->PMV[0][vector][0];
mv.top.y = mb->PMV[0][vector][1];
mv.top.field_select = PIPE_VIDEO_FRAME;
mv.top.weight = weight;
mv.bottom.x = mb->PMV[0][vector][0];
mv.bottom.y = mb->PMV[0][vector][1];
mv.bottom.weight = weight;
mv.bottom.field_select = PIPE_VIDEO_FRAME;
break;
case PIPE_MPEG12_MO_TYPE_FIELD:
mv.top.x = mb->PMV[0][vector][0];
mv.top.y = mb->PMV[0][vector][1];
mv.top.field_select = (mb->motion_vertical_field_select & field_select_mask) ?
PIPE_VIDEO_BOTTOM_FIELD : PIPE_VIDEO_TOP_FIELD;
mv.top.weight = weight;
mv.bottom.x = mb->PMV[1][vector][0];
mv.bottom.y = mb->PMV[1][vector][1];
mv.bottom.field_select = (mb->motion_vertical_field_select & (field_select_mask << 2)) ?
PIPE_VIDEO_BOTTOM_FIELD : PIPE_VIDEO_TOP_FIELD;
mv.bottom.weight = weight;
break;
default: // TODO: Support DUALPRIME and 16x8
break;
}
} else {
mv.top.x = mv.top.y = 0;
mv.top.field_select = PIPE_VIDEO_FRAME;
mv.top.weight = weight;
mv.bottom.x = mv.bottom.y = 0;
mv.bottom.field_select = PIPE_VIDEO_FRAME;
mv.bottom.weight = weight;
}
return mv;
}
static inline void
UploadYcbcrBlocks(struct vl_mpeg12_decoder *dec,
struct vl_mpeg12_buffer *buf,
const struct pipe_mpeg12_macroblock *mb)
{
unsigned intra;
unsigned tb, x, y, num_blocks = 0;
assert(dec && buf);
assert(mb);
if (!mb->coded_block_pattern)
return;
intra = mb->macroblock_type & PIPE_MPEG12_MB_TYPE_INTRA ? 1 : 0;
for (y = 0; y < 2; ++y) {
for (x = 0; x < 2; ++x) {
if (mb->coded_block_pattern & const_empty_block_mask_420[0][y][x]) {
struct vl_ycbcr_block *stream = buf->ycbcr_stream[0];
stream->x = mb->x * 2 + x;
stream->y = mb->y * 2 + y;
stream->intra = intra;
stream->coding = mb->macroblock_modes.bits.dct_type;
stream->block_num = buf->block_num++;
buf->num_ycbcr_blocks[0]++;
buf->ycbcr_stream[0]++;
num_blocks++;
}
}
}
/* TODO: Implement 422, 444 */
//assert(ctx->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
for (tb = 1; tb < 3; ++tb) {
if (mb->coded_block_pattern & const_empty_block_mask_420[tb][0][0]) {
struct vl_ycbcr_block *stream = buf->ycbcr_stream[tb];
stream->x = mb->x;
stream->y = mb->y;
stream->intra = intra;
stream->coding = 0;
stream->block_num = buf->block_num++;
buf->num_ycbcr_blocks[tb]++;
buf->ycbcr_stream[tb]++;
num_blocks++;
}
}
memcpy(buf->texels, mb->blocks, 64 * sizeof(short) * num_blocks);
buf->texels += 64 * num_blocks;
}
static void
vl_mpeg12_destroy_buffer(struct vl_mpeg12_buffer *buf)
{
assert(buf);
cleanup_zscan_buffer(buf);
cleanup_idct_buffer(buf);
cleanup_mc_buffer(buf);
vl_vb_cleanup(&buf->vertex_stream);
FREE(buf);
}
static void
vl_mpeg12_destroy(struct pipe_video_codec *decoder)
{
struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder*)decoder;
unsigned i;
assert(decoder);
free_video_buffer_privates(dec);
/* Asserted in softpipe_delete_fs_state() for some reason */
dec->context->bind_vs_state(dec->context, NULL);
dec->context->bind_fs_state(dec->context, NULL);
dec->context->delete_depth_stencil_alpha_state(dec->context, dec->dsa);
dec->context->delete_sampler_state(dec->context, dec->sampler_ycbcr);
vl_mc_cleanup(&dec->mc_y);
vl_mc_cleanup(&dec->mc_c);
dec->mc_source->destroy(dec->mc_source);
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
vl_idct_cleanup(&dec->idct_y);
vl_idct_cleanup(&dec->idct_c);
dec->idct_source->destroy(dec->idct_source);
}
vl_zscan_cleanup(&dec->zscan_y);
vl_zscan_cleanup(&dec->zscan_c);
dec->context->delete_vertex_elements_state(dec->context, dec->ves_ycbcr);
dec->context->delete_vertex_elements_state(dec->context, dec->ves_mv);
pipe_resource_reference(&dec->quads.buffer.resource, NULL);
pipe_resource_reference(&dec->pos.buffer.resource, NULL);
pipe_sampler_view_reference(&dec->zscan_linear, NULL);
pipe_sampler_view_reference(&dec->zscan_normal, NULL);
pipe_sampler_view_reference(&dec->zscan_alternate, NULL);
for (i = 0; i < 4; ++i)
if (dec->dec_buffers[i])
vl_mpeg12_destroy_buffer(dec->dec_buffers[i]);
dec->context->destroy(dec->context);
FREE(dec);
}
static struct vl_mpeg12_buffer *
vl_mpeg12_get_decode_buffer(struct vl_mpeg12_decoder *dec, struct pipe_video_buffer *target)
{
struct video_buffer_private *priv;
struct vl_mpeg12_buffer *buffer;
assert(dec);
priv = get_video_buffer_private(dec, target);
if (priv->buffer)
return priv->buffer;
buffer = dec->dec_buffers[dec->current_buffer];
if (buffer)
return buffer;
buffer = CALLOC_STRUCT(vl_mpeg12_buffer);
if (!buffer)
return NULL;
if (!vl_vb_init(&buffer->vertex_stream, dec->context,
dec->base.width / VL_MACROBLOCK_WIDTH,
dec->base.height / VL_MACROBLOCK_HEIGHT))
goto error_vertex_buffer;
if (!init_mc_buffer(dec, buffer))
goto error_mc;
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
if (!init_idct_buffer(dec, buffer))
goto error_idct;
if (!init_zscan_buffer(dec, buffer))
goto error_zscan;
if (dec->base.entrypoint == PIPE_VIDEO_ENTRYPOINT_BITSTREAM)
vl_mpg12_bs_init(&buffer->bs, &dec->base);
if (dec->base.expect_chunked_decode)
priv->buffer = buffer;
else
dec->dec_buffers[dec->current_buffer] = buffer;
return buffer;
error_zscan:
cleanup_idct_buffer(buffer);
error_idct:
cleanup_mc_buffer(buffer);
error_mc:
vl_vb_cleanup(&buffer->vertex_stream);
error_vertex_buffer:
FREE(buffer);
return NULL;
}
static void
vl_mpeg12_begin_frame(struct pipe_video_codec *decoder,
struct pipe_video_buffer *target,
struct pipe_picture_desc *picture)
{
struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder *)decoder;
struct pipe_mpeg12_picture_desc *desc = (struct pipe_mpeg12_picture_desc *)picture;
struct vl_mpeg12_buffer *buf;
struct pipe_resource *tex;
struct pipe_box rect = { 0, 0, 0, 1, 1, 1 };
uint8_t intra_matrix[64];
uint8_t non_intra_matrix[64];
unsigned i;
assert(dec && target && picture);
buf = vl_mpeg12_get_decode_buffer(dec, target);
assert(buf);
if (dec->base.entrypoint == PIPE_VIDEO_ENTRYPOINT_BITSTREAM) {
memcpy(intra_matrix, desc->intra_matrix, sizeof(intra_matrix));
memcpy(non_intra_matrix, desc->non_intra_matrix, sizeof(non_intra_matrix));
intra_matrix[0] = 1 << (7 - desc->intra_dc_precision);
} else {
memset(intra_matrix, 0x10, sizeof(intra_matrix));
memset(non_intra_matrix, 0x10, sizeof(non_intra_matrix));
}
for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
struct vl_zscan *zscan = i == 0 ? &dec->zscan_y : &dec->zscan_c;
vl_zscan_upload_quant(zscan, &buf->zscan[i], intra_matrix, true);
vl_zscan_upload_quant(zscan, &buf->zscan[i], non_intra_matrix, false);
}
vl_vb_map(&buf->vertex_stream, dec->context);
tex = buf->zscan_source->texture;
rect.width = tex->width0;
rect.height = tex->height0;
buf->texels =
dec->context->transfer_map(dec->context, tex, 0,
PIPE_TRANSFER_WRITE |
PIPE_TRANSFER_DISCARD_RANGE,
&rect, &buf->tex_transfer);
buf->block_num = 0;
for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
buf->ycbcr_stream[i] = vl_vb_get_ycbcr_stream(&buf->vertex_stream, i);
buf->num_ycbcr_blocks[i] = 0;
}
for (i = 0; i < VL_MAX_REF_FRAMES; ++i)
buf->mv_stream[i] = vl_vb_get_mv_stream(&buf->vertex_stream, i);
if (dec->base.entrypoint >= PIPE_VIDEO_ENTRYPOINT_IDCT) {
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
vl_zscan_set_layout(&buf->zscan[i], dec->zscan_linear);
}
}
static void
vl_mpeg12_decode_macroblock(struct pipe_video_codec *decoder,
struct pipe_video_buffer *target,
struct pipe_picture_desc *picture,
const struct pipe_macroblock *macroblocks,
unsigned num_macroblocks)
{
struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder *)decoder;
const struct pipe_mpeg12_macroblock *mb = (const struct pipe_mpeg12_macroblock *)macroblocks;
struct pipe_mpeg12_picture_desc *desc = (struct pipe_mpeg12_picture_desc *)picture;
struct vl_mpeg12_buffer *buf;
unsigned i, j, mv_weights[2];
assert(dec && target && picture);
assert(macroblocks && macroblocks->codec == PIPE_VIDEO_FORMAT_MPEG12);
buf = vl_mpeg12_get_decode_buffer(dec, target);
assert(buf);
for (; num_macroblocks > 0; --num_macroblocks) {
unsigned mb_addr = mb->y * dec->width_in_macroblocks + mb->x;
if (mb->macroblock_type & (PIPE_MPEG12_MB_TYPE_PATTERN | PIPE_MPEG12_MB_TYPE_INTRA))
UploadYcbcrBlocks(dec, buf, mb);
MacroBlockTypeToPipeWeights(mb, mv_weights);
for (i = 0; i < 2; ++i) {
if (!desc->ref[i]) continue;
buf->mv_stream[i][mb_addr] = MotionVectorToPipe
(
mb, i,
i ? PIPE_MPEG12_FS_FIRST_BACKWARD : PIPE_MPEG12_FS_FIRST_FORWARD,
mv_weights[i]
);
}
/* see section 7.6.6 of the spec */
if (mb->num_skipped_macroblocks > 0) {
struct vl_motionvector skipped_mv[2];
if (desc->ref[0] && !desc->ref[1]) {
skipped_mv[0].top.x = skipped_mv[0].top.y = 0;
skipped_mv[0].top.weight = PIPE_VIDEO_MV_WEIGHT_MAX;
} else {
skipped_mv[0] = buf->mv_stream[0][mb_addr];
skipped_mv[1] = buf->mv_stream[1][mb_addr];
}
skipped_mv[0].top.field_select = PIPE_VIDEO_FRAME;
skipped_mv[1].top.field_select = PIPE_VIDEO_FRAME;
skipped_mv[0].bottom = skipped_mv[0].top;
skipped_mv[1].bottom = skipped_mv[1].top;
++mb_addr;
for (i = 0; i < mb->num_skipped_macroblocks; ++i, ++mb_addr) {
for (j = 0; j < 2; ++j) {
if (!desc->ref[j]) continue;
buf->mv_stream[j][mb_addr] = skipped_mv[j];
}
}
}
++mb;
}
}
static void
vl_mpeg12_decode_bitstream(struct pipe_video_codec *decoder,
struct pipe_video_buffer *target,
struct pipe_picture_desc *picture,
unsigned num_buffers,
const void * const *buffers,
const unsigned *sizes)
{
struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder *)decoder;
struct pipe_mpeg12_picture_desc *desc = (struct pipe_mpeg12_picture_desc *)picture;
struct vl_mpeg12_buffer *buf;
unsigned i;
assert(dec && target && picture);
buf = vl_mpeg12_get_decode_buffer(dec, target);
assert(buf);
for (i = 0; i < VL_NUM_COMPONENTS; ++i)
vl_zscan_set_layout(&buf->zscan[i], desc->alternate_scan ?
dec->zscan_alternate : dec->zscan_normal);
vl_mpg12_bs_decode(&buf->bs, target, desc, num_buffers, buffers, sizes);
}
static void
vl_mpeg12_end_frame(struct pipe_video_codec *decoder,
struct pipe_video_buffer *target,
struct pipe_picture_desc *picture)
{
struct vl_mpeg12_decoder *dec = (struct vl_mpeg12_decoder *)decoder;
struct pipe_mpeg12_picture_desc *desc = (struct pipe_mpeg12_picture_desc *)picture;
struct pipe_sampler_view **ref_frames[2];
struct pipe_sampler_view **mc_source_sv;
struct pipe_surface **target_surfaces;
struct pipe_vertex_buffer vb[3];
struct vl_mpeg12_buffer *buf;
const unsigned *plane_order;
unsigned i, j, component;
unsigned nr_components;
assert(dec && target && picture);
assert(!target->interlaced);
buf = vl_mpeg12_get_decode_buffer(dec, target);
vl_vb_unmap(&buf->vertex_stream, dec->context);
dec->context->transfer_unmap(dec->context, buf->tex_transfer);
vb[0] = dec->quads;
vb[1] = dec->pos;
target_surfaces = get_video_buffer_private(dec, target)->surfaces;
for (i = 0; i < VL_MAX_REF_FRAMES; ++i) {
if (desc->ref[i])
ref_frames[i] = get_video_buffer_private(dec, desc->ref[i])->sampler_view_planes;
else
ref_frames[i] = NULL;
}
dec->context->bind_vertex_elements_state(dec->context, dec->ves_mv);
for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
if (!target_surfaces[i]) continue;
vl_mc_set_surface(&buf->mc[i], target_surfaces[i]);
for (j = 0; j < VL_MAX_REF_FRAMES; ++j) {
if (!ref_frames[j] || !ref_frames[j][i]) continue;
vb[2] = vl_vb_get_mv(&buf->vertex_stream, j);
dec->context->set_vertex_buffers(dec->context, 0, 3, vb);
vl_mc_render_ref(i ? &dec->mc_c : &dec->mc_y, &buf->mc[i], ref_frames[j][i]);
}
}
dec->context->bind_vertex_elements_state(dec->context, dec->ves_ycbcr);
for (i = 0; i < VL_NUM_COMPONENTS; ++i) {
if (!buf->num_ycbcr_blocks[i]) continue;
vb[1] = vl_vb_get_ycbcr(&buf->vertex_stream, i);
dec->context->set_vertex_buffers(dec->context, 0, 2, vb);
vl_zscan_render(i ? &dec->zscan_c : & dec->zscan_y, &buf->zscan[i] , buf->num_ycbcr_blocks[i]);
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
vl_idct_flush(i ? &dec->idct_c : &dec->idct_y, &buf->idct[i], buf->num_ycbcr_blocks[i]);
}
plane_order = vl_video_buffer_plane_order(target->buffer_format);
mc_source_sv = dec->mc_source->get_sampler_view_planes(dec->mc_source);
for (i = 0, component = 0; component < VL_NUM_COMPONENTS; ++i) {
if (!target_surfaces[i]) continue;
nr_components = util_format_get_nr_components(target_surfaces[i]->texture->format);
for (j = 0; j < nr_components; ++j, ++component) {
unsigned plane = plane_order[component];
if (!buf->num_ycbcr_blocks[plane]) continue;
vb[1] = vl_vb_get_ycbcr(&buf->vertex_stream, plane);
dec->context->set_vertex_buffers(dec->context, 0, 2, vb);
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT)
vl_idct_prepare_stage2(i ? &dec->idct_c : &dec->idct_y, &buf->idct[plane]);
else {
dec->context->set_sampler_views(dec->context,
PIPE_SHADER_FRAGMENT, 0, 1,
&mc_source_sv[plane]);
dec->context->bind_sampler_states(dec->context,
PIPE_SHADER_FRAGMENT,
0, 1, &dec->sampler_ycbcr);
}
vl_mc_render_ycbcr(i ? &dec->mc_c : &dec->mc_y, &buf->mc[i], j, buf->num_ycbcr_blocks[plane]);
}
}
dec->context->flush(dec->context, NULL, 0);
++dec->current_buffer;
dec->current_buffer %= 4;
}
static void
vl_mpeg12_flush(struct pipe_video_codec *decoder)
{
assert(decoder);
//Noop, for shaders it is much faster to flush everything in end_frame
}
static bool
init_pipe_state(struct vl_mpeg12_decoder *dec)
{
struct pipe_depth_stencil_alpha_state dsa;
struct pipe_sampler_state sampler;
unsigned i;
assert(dec);
memset(&dsa, 0, sizeof dsa);
dsa.depth.enabled = 0;
dsa.depth.writemask = 0;
dsa.depth.func = PIPE_FUNC_ALWAYS;
for (i = 0; i < 2; ++i) {
dsa.stencil[i].enabled = 0;
dsa.stencil[i].func = PIPE_FUNC_ALWAYS;
dsa.stencil[i].fail_op = PIPE_STENCIL_OP_KEEP;
dsa.stencil[i].zpass_op = PIPE_STENCIL_OP_KEEP;
dsa.stencil[i].zfail_op = PIPE_STENCIL_OP_KEEP;
dsa.stencil[i].valuemask = 0;
dsa.stencil[i].writemask = 0;
}
dsa.alpha.enabled = 0;
dsa.alpha.func = PIPE_FUNC_ALWAYS;
dsa.alpha.ref_value = 0;
dec->dsa = dec->context->create_depth_stencil_alpha_state(dec->context, &dsa);
dec->context->bind_depth_stencil_alpha_state(dec->context, dec->dsa);
memset(&sampler, 0, sizeof(sampler));
sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_BORDER;
sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
sampler.compare_func = PIPE_FUNC_ALWAYS;
sampler.normalized_coords = 1;
dec->sampler_ycbcr = dec->context->create_sampler_state(dec->context, &sampler);
if (!dec->sampler_ycbcr)
return false;
return true;
}
static const struct format_config*
find_format_config(struct vl_mpeg12_decoder *dec, const struct format_config configs[], unsigned num_configs)
{
struct pipe_screen *screen;
unsigned i;
assert(dec);
screen = dec->context->screen;
for (i = 0; i < num_configs; ++i) {
if (!screen->is_format_supported(screen, configs[i].zscan_source_format, PIPE_TEXTURE_2D,
1, PIPE_BIND_SAMPLER_VIEW))
continue;
if (configs[i].idct_source_format != PIPE_FORMAT_NONE) {
if (!screen->is_format_supported(screen, configs[i].idct_source_format, PIPE_TEXTURE_2D,
1, PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET))
continue;
if (!screen->is_format_supported(screen, configs[i].mc_source_format, PIPE_TEXTURE_3D,
1, PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET))
continue;
} else {
if (!screen->is_format_supported(screen, configs[i].mc_source_format, PIPE_TEXTURE_2D,
1, PIPE_BIND_SAMPLER_VIEW | PIPE_BIND_RENDER_TARGET))
continue;
}
return &configs[i];
}
return NULL;
}
static bool
init_zscan(struct vl_mpeg12_decoder *dec, const struct format_config* format_config)
{
unsigned num_channels;
assert(dec);
dec->zscan_source_format = format_config->zscan_source_format;
dec->zscan_linear = vl_zscan_layout(dec->context, vl_zscan_linear, dec->blocks_per_line);
dec->zscan_normal = vl_zscan_layout(dec->context, vl_zscan_normal, dec->blocks_per_line);
dec->zscan_alternate = vl_zscan_layout(dec->context, vl_zscan_alternate, dec->blocks_per_line);
num_channels = dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT ? 4 : 1;
if (!vl_zscan_init(&dec->zscan_y, dec->context, dec->base.width, dec->base.height,
dec->blocks_per_line, dec->num_blocks, num_channels))
return false;
if (!vl_zscan_init(&dec->zscan_c, dec->context, dec->chroma_width, dec->chroma_height,
dec->blocks_per_line, dec->num_blocks, num_channels))
return false;
return true;
}
static bool
init_idct(struct vl_mpeg12_decoder *dec, const struct format_config* format_config)
{
unsigned nr_of_idct_render_targets, max_inst;
enum pipe_format formats[3];
struct pipe_video_buffer templat;
struct pipe_sampler_view *matrix = NULL;
nr_of_idct_render_targets = dec->context->screen->get_param
(
dec->context->screen, PIPE_CAP_MAX_RENDER_TARGETS
);
max_inst = dec->context->screen->get_shader_param
(
dec->context->screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_INSTRUCTIONS
);
// Just assume we need 32 inst per render target, not 100% true, but should work in most cases
if (nr_of_idct_render_targets >= 4 && max_inst >= 32*4)
// more than 4 render targets usually doesn't makes any seens
nr_of_idct_render_targets = 4;
else
nr_of_idct_render_targets = 1;
formats[0] = formats[1] = formats[2] = format_config->idct_source_format;
memset(&templat, 0, sizeof(templat));
templat.width = dec->base.width / 4;
templat.height = dec->base.height;
templat.chroma_format = dec->base.chroma_format;
dec->idct_source = vl_video_buffer_create_ex
(
dec->context, &templat,
formats, 1, 1, PIPE_USAGE_DEFAULT
);
if (!dec->idct_source)
goto error_idct_source;
formats[0] = formats[1] = formats[2] = format_config->mc_source_format;
memset(&templat, 0, sizeof(templat));
templat.width = dec->base.width / nr_of_idct_render_targets;
templat.height = dec->base.height / 4;
templat.chroma_format = dec->base.chroma_format;
dec->mc_source = vl_video_buffer_create_ex
(
dec->context, &templat,
formats, nr_of_idct_render_targets, 1, PIPE_USAGE_DEFAULT
);
if (!dec->mc_source)
goto error_mc_source;
if (!(matrix = vl_idct_upload_matrix(dec->context, format_config->idct_scale)))
goto error_matrix;
if (!vl_idct_init(&dec->idct_y, dec->context, dec->base.width, dec->base.height,
nr_of_idct_render_targets, matrix, matrix))
goto error_y;
if(!vl_idct_init(&dec->idct_c, dec->context, dec->chroma_width, dec->chroma_height,
nr_of_idct_render_targets, matrix, matrix))
goto error_c;
pipe_sampler_view_reference(&matrix, NULL);
return true;
error_c:
vl_idct_cleanup(&dec->idct_y);
error_y:
pipe_sampler_view_reference(&matrix, NULL);
error_matrix:
dec->mc_source->destroy(dec->mc_source);
error_mc_source:
dec->idct_source->destroy(dec->idct_source);
error_idct_source:
return false;
}
static bool
init_mc_source_widthout_idct(struct vl_mpeg12_decoder *dec, const struct format_config* format_config)
{
enum pipe_format formats[3];
struct pipe_video_buffer templat;
formats[0] = formats[1] = formats[2] = format_config->mc_source_format;
memset(&templat, 0, sizeof(templat));
templat.width = dec->base.width;
templat.height = dec->base.height;
templat.chroma_format = dec->base.chroma_format;
dec->mc_source = vl_video_buffer_create_ex
(
dec->context, &templat,
formats, 1, 1, PIPE_USAGE_DEFAULT
);
return dec->mc_source != NULL;
}
static void
mc_vert_shader_callback(void *priv, struct vl_mc *mc,
struct ureg_program *shader,
unsigned first_output,
struct ureg_dst tex)
{
struct vl_mpeg12_decoder *dec = priv;
struct ureg_dst o_vtex;
assert(priv && mc);
assert(shader);
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
struct vl_idct *idct = mc == &dec->mc_y ? &dec->idct_y : &dec->idct_c;
vl_idct_stage2_vert_shader(idct, shader, first_output, tex);
} else {
o_vtex = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, first_output);
ureg_MOV(shader, ureg_writemask(o_vtex, TGSI_WRITEMASK_XY), ureg_src(tex));
}
}
static void
mc_frag_shader_callback(void *priv, struct vl_mc *mc,
struct ureg_program *shader,
unsigned first_input,
struct ureg_dst dst)
{
struct vl_mpeg12_decoder *dec = priv;
struct ureg_src src, sampler;
assert(priv && mc);
assert(shader);
if (dec->base.entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
struct vl_idct *idct = mc == &dec->mc_y ? &dec->idct_y : &dec->idct_c;
vl_idct_stage2_frag_shader(idct, shader, first_input, dst);
} else {
src = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, first_input, TGSI_INTERPOLATE_LINEAR);
sampler = ureg_DECL_sampler(shader, 0);
ureg_TEX(shader, dst, TGSI_TEXTURE_2D, src, sampler);
}
}
struct pipe_video_codec *
vl_create_mpeg12_decoder(struct pipe_context *context,
const struct pipe_video_codec *templat)
{
const unsigned block_size_pixels = VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
const struct format_config *format_config;
struct vl_mpeg12_decoder *dec;
assert(u_reduce_video_profile(templat->profile) == PIPE_VIDEO_FORMAT_MPEG12);
dec = CALLOC_STRUCT(vl_mpeg12_decoder);
if (!dec)
return NULL;
dec->base = *templat;
dec->base.context = context;
dec->context = context->screen->context_create(context->screen, NULL, 0);
dec->base.destroy = vl_mpeg12_destroy;
dec->base.begin_frame = vl_mpeg12_begin_frame;
dec->base.decode_macroblock = vl_mpeg12_decode_macroblock;
dec->base.decode_bitstream = vl_mpeg12_decode_bitstream;
dec->base.end_frame = vl_mpeg12_end_frame;
dec->base.flush = vl_mpeg12_flush;
dec->blocks_per_line = MAX2(util_next_power_of_two(dec->base.width) / block_size_pixels, 4);
dec->num_blocks = (dec->base.width * dec->base.height) / block_size_pixels;
dec->width_in_macroblocks = align(dec->base.width, VL_MACROBLOCK_WIDTH) / VL_MACROBLOCK_WIDTH;
/* TODO: Implement 422, 444 */
assert(dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420);
if (dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_420) {
dec->chroma_width = dec->base.width / 2;
dec->chroma_height = dec->base.height / 2;
dec->num_blocks = dec->num_blocks * 2;
} else if (dec->base.chroma_format == PIPE_VIDEO_CHROMA_FORMAT_422) {
dec->chroma_width = dec->base.width / 2;
dec->chroma_height = dec->base.height;
dec->num_blocks = dec->num_blocks * 2 + dec->num_blocks;
} else {
dec->chroma_width = dec->base.width;
dec->chroma_height = dec->base.height;
dec->num_blocks = dec->num_blocks * 3;
}
dec->quads = vl_vb_upload_quads(dec->context);
dec->pos = vl_vb_upload_pos(
dec->context,
dec->base.width / VL_MACROBLOCK_WIDTH,
dec->base.height / VL_MACROBLOCK_HEIGHT
);
dec->ves_ycbcr = vl_vb_get_ves_ycbcr(dec->context);
dec->ves_mv = vl_vb_get_ves_mv(dec->context);
switch (templat->entrypoint) {
case PIPE_VIDEO_ENTRYPOINT_BITSTREAM:
format_config = find_format_config(dec, bitstream_format_config, num_bitstream_format_configs);
break;
case PIPE_VIDEO_ENTRYPOINT_IDCT:
format_config = find_format_config(dec, idct_format_config, num_idct_format_configs);
break;
case PIPE_VIDEO_ENTRYPOINT_MC:
format_config = find_format_config(dec, mc_format_config, num_mc_format_configs);
break;
default:
assert(0);
FREE(dec);
return NULL;
}
if (!format_config) {
FREE(dec);
return NULL;
}
if (!init_zscan(dec, format_config))
goto error_zscan;
if (templat->entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
if (!init_idct(dec, format_config))
goto error_sources;
} else {
if (!init_mc_source_widthout_idct(dec, format_config))
goto error_sources;
}
if (!vl_mc_init(&dec->mc_y, dec->context, dec->base.width, dec->base.height,
VL_MACROBLOCK_HEIGHT, format_config->mc_scale,
mc_vert_shader_callback, mc_frag_shader_callback, dec))
goto error_mc_y;
// TODO
if (!vl_mc_init(&dec->mc_c, dec->context, dec->base.width, dec->base.height,
VL_BLOCK_HEIGHT, format_config->mc_scale,
mc_vert_shader_callback, mc_frag_shader_callback, dec))
goto error_mc_c;
if (!init_pipe_state(dec))
goto error_pipe_state;
list_inithead(&dec->buffer_privates);
return &dec->base;
error_pipe_state:
vl_mc_cleanup(&dec->mc_c);
error_mc_c:
vl_mc_cleanup(&dec->mc_y);
error_mc_y:
if (templat->entrypoint <= PIPE_VIDEO_ENTRYPOINT_IDCT) {
vl_idct_cleanup(&dec->idct_y);
vl_idct_cleanup(&dec->idct_c);
dec->idct_source->destroy(dec->idct_source);
}
dec->mc_source->destroy(dec->mc_source);
error_sources:
vl_zscan_cleanup(&dec->zscan_y);
vl_zscan_cleanup(&dec->zscan_c);
error_zscan:
FREE(dec);
return NULL;
}