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gstspu: Implement PGS rendering and alpha blending

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Refactor the DVD subpicture compositing, switching it to 8-bit alpha
calculations. Reuse some of the resulting code to implement PGS
subpicture blending.

Implement parsing and collecting of composition objects properly, but
assuming a single active window and colour palette for now. I need more
PGS samples.
This commit is contained in:
Jan Schmidt 2009-05-23 23:19:05 +01:00
parent 7e20e3be45
commit b68a05dbfa
10 changed files with 1529 additions and 969 deletions
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2
gst/dvdspu/Makefile.am
View file

@ -1,7 +1,7 @@
plugin_LTLIBRARIES = libgstdvdspu.la
libgstdvdspu_la_SOURCES = gstdvdspu.c gstdvdspu-render.c gstspu-vobsub.c gstspu-pgs.c
libgstdvdspu_la_SOURCES = gstdvdspu.c gstdvdspu-render.c gstspu-vobsub.c gstspu-vobsub-render.c gstspu-pgs.c
libgstdvdspu_la_CFLAGS = $(GST_CFLAGS)
libgstdvdspu_la_LIBADD = $(GST_LIBS)

515
gst/dvdspu/gstdvdspu-render.c
View file

@ -1,5 +1,6 @@
/* GStreamer DVD Sub-Picture Unit
* Copyright (C) 2007 Fluendo S.A. <info@fluendo.com>
* Copyright (C) 2009 Jan Schmidt <thaytan@noraisin.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -29,338 +30,38 @@
GST_DEBUG_CATEGORY_EXTERN (dvdspu_debug);
#define GST_CAT_DEFAULT dvdspu_debug
static void
dvdspu_recalc_palette (GstDVDSpu * dvdspu,
SpuColour * dest, guint8 * idx, guint8 * alpha)
void
gstspu_clear_comp_buffers (SpuState * state)
{
SpuState *state = &dvdspu->spu_state;
gint i;
for (i = 0; i < 4; i++, dest++) {
guint32 col = state->current_clut[idx[i]];
dest->Y = (guint16) ((col >> 16) & 0xff) * alpha[i];
/* U/V are stored as V/U in the clut words, so switch them */
dest->U = (guint16) (col & 0xff) * alpha[i];
dest->V = (guint16) ((col >> 8) & 0xff) * alpha[i];
dest->A = alpha[i];
}
}
/* Recalculate the main, HL & ChgCol palettes */
static void
dvdspu_update_palettes (GstDVDSpu * dvdspu, SpuState * state)
{
gint16 l, c;
guint8 index[4]; /* Indices for the palette */
guint8 alpha[4]; /* Alpha values the palette */
if (state->main_pal_dirty) {
dvdspu_recalc_palette (dvdspu, state->main_pal, state->main_idx,
state->main_alpha);
/* Need to refresh the hl_ctrl info copies of the main palette too */
memcpy (state->hl_ctrl_i.pix_ctrl_i[0].pal_cache, state->main_pal,
4 * sizeof (SpuColour));
memcpy (state->hl_ctrl_i.pix_ctrl_i[2].pal_cache, state->main_pal,
4 * sizeof (SpuColour));
state->main_pal_dirty = FALSE;
}
if (state->hl_pal_dirty) {
dvdspu_recalc_palette (dvdspu, state->hl_ctrl_i.pix_ctrl_i[1].pal_cache,
state->hl_idx, state->hl_alpha);
state->hl_pal_dirty = FALSE;
}
/* Update the offset positions for the highlight region */
if (state->hl_rect.top != -1) {
state->hl_ctrl_i.top = state->hl_rect.top;
state->hl_ctrl_i.bottom = state->hl_rect.bottom;
state->hl_ctrl_i.n_changes = 3;
state->hl_ctrl_i.pix_ctrl_i[0].left = 0;
state->hl_ctrl_i.pix_ctrl_i[1].left = state->hl_rect.left;
state->hl_ctrl_i.pix_ctrl_i[2].left = state->hl_rect.right + 1;
}
if (state->line_ctrl_i_pal_dirty) {
GST_LOG_OBJECT (dvdspu, "Updating chg-col-con palettes");
for (l = 0; l < state->n_line_ctrl_i; l++) {
SpuLineCtrlI *cur_line_ctrl = state->line_ctrl_i + l;
for (c = 0; c < cur_line_ctrl->n_changes; c++) {
SpuPixCtrlI *cur = cur_line_ctrl->pix_ctrl_i + c;
index[3] = (cur->palette >> 28) & 0x0f;
index[2] = (cur->palette >> 24) & 0x0f;
index[1] = (cur->palette >> 20) & 0x0f;
index[0] = (cur->palette >> 16) & 0x0f;
alpha[3] = (cur->palette >> 12) & 0x0f;
alpha[2] = (cur->palette >> 8) & 0x0f;
alpha[1] = (cur->palette >> 4) & 0x0f;
alpha[0] = (cur->palette) & 0x0f;
dvdspu_recalc_palette (dvdspu, cur->pal_cache, index, alpha);
}
}
state->line_ctrl_i_pal_dirty = FALSE;
}
}
static void
dvdspu_clear_comp_buffers (SpuState * state)
{
/* The area to clear is the line inside the disp_rect, each entry 2 bytes,
/* The area to clear is the line inside the disp_rect, each entry 4 bytes,
* of the sub-sampled UV planes. */
gint16 left = state->disp_rect.left / 2;
gint16 right = state->disp_rect.right / 2;
gint16 uv_width = 2 * (right - left + 1);
gint16 left = state->comp_left / 2;
gint16 right = state->comp_right / 2;
gint16 uv_width = sizeof (guint32) * (right - left + 1);
memset (state->comp_bufs[0] + left, 0, uv_width);
memset (state->comp_bufs[1] + left, 0, uv_width);
memset (state->comp_bufs[2] + left, 0, uv_width);
state->comp_last_x[0] = -1;
state->comp_last_x[1] = -1;
}
static inline guint8
dvdspu_get_nibble (SpuState * state, guint16 * rle_offset)
{
guint8 ret;
if (G_UNLIKELY (*rle_offset >= state->max_offset))
return 0; /* Overran the buffer */
ret = GST_BUFFER_DATA (state->pix_buf)[(*rle_offset) / 2];
/* If the offset is even, we shift the answer down 4 bits, otherwise not */
if (*rle_offset & 0x01)
ret &= 0x0f;
else
ret = ret >> 4;
(*rle_offset)++;
return ret;
}
static guint16
dvdspu_get_rle_code (SpuState * state, guint16 * rle_offset)
{
guint16 code;
code = dvdspu_get_nibble (state, rle_offset);
if (code < 0x4) { /* 4 .. f */
code = (code << 4) | dvdspu_get_nibble (state, rle_offset);
if (code < 0x10) { /* 1x .. 3x */
code = (code << 4) | dvdspu_get_nibble (state, rle_offset);
if (code < 0x40) { /* 04x .. 0fx */
code = (code << 4) | dvdspu_get_nibble (state, rle_offset);
}
}
}
return code;
}
static inline void
dvdspu_draw_rle_run (SpuState * state, gint16 x, gint16 end, SpuColour * colour)
{
#if 0
GST_LOG ("Y: %d x: %d end %d col %d %d %d %d",
state->cur_Y, x, end, colour->Y, colour->U, colour->V, colour->A);
#endif
if (colour->A != 0) {
guint8 inv_A = 0xf - colour->A;
/* FIXME: This could be more efficient */
while (x < end) {
state->out_Y[x] = (inv_A * state->out_Y[x] + colour->Y) / 0xf;
state->out_U[x / 2] += colour->U;
state->out_V[x / 2] += colour->V;
state->out_A[x / 2] += colour->A;
x++;
}
/* Update the compositing buffer so we know how much to blend later */
*(state->comp_last_x_ptr) = end;
}
}
static inline gint16
rle_end_x (guint16 rle_code, gint16 x, gint16 end)
{
/* run length = rle_code >> 2 */
if (G_UNLIKELY (((rle_code >> 2) == 0)))
return end;
else
return MIN (end, x + (rle_code >> 2));
}
static void dvdspu_render_line_with_chgcol (SpuState * state,
guint8 * planes[3], guint16 * rle_offset);
static gboolean dvdspu_update_chgcol (SpuState * state);
static void
dvdspu_render_line (SpuState * state, guint8 * planes[3], guint16 * rle_offset)
{
gint16 x, next_x, end, rle_code;
SpuColour *colour;
/* Check for special case of chg_col info to use (either highlight or
* ChgCol command */
if (state->cur_chg_col != NULL) {
if (dvdspu_update_chgcol (state)) {
/* Check the top & bottom, because we might not be within the region yet */
if (state->cur_Y >= state->cur_chg_col->top &&
state->cur_Y <= state->cur_chg_col->bottom) {
dvdspu_render_line_with_chgcol (state, planes, rle_offset);
return;
}
}
}
/* No special case. Render as normal */
/* Set up our output pointers */
state->out_Y = planes[0];
state->out_U = state->comp_bufs[0];
state->out_V = state->comp_bufs[1];
state->out_A = state->comp_bufs[2];
/* We always need to start our RLE decoding byte_aligned */
*rle_offset = GST_ROUND_UP_2 (*rle_offset);
x = state->disp_rect.left;
end = state->disp_rect.right + 1;
while (x < end) {
rle_code = dvdspu_get_rle_code (state, rle_offset);
colour = &state->main_pal[rle_code & 3];
next_x = rle_end_x (rle_code, x, end);
/* Now draw the run between [x,next_x) */
dvdspu_draw_rle_run (state, x, next_x, colour);
x = next_x;
}
}
static gboolean
dvdspu_update_chgcol (SpuState * state)
{
if (state->cur_chg_col == NULL)
return FALSE;
if (state->cur_Y <= state->cur_chg_col->bottom)
return TRUE;
while (state->cur_chg_col < state->cur_chg_col_end) {
if (state->cur_Y >= state->cur_chg_col->top &&
state->cur_Y <= state->cur_chg_col->bottom) {
#if 0
g_print ("Stopped @ entry %d with top %d bottom %d, cur_y %d",
(gint16) (state->cur_chg_col - state->line_ctrl_i),
state->cur_chg_col->top, state->cur_chg_col->bottom, y);
#endif
return TRUE;
}
state->cur_chg_col++;
}
/* Finished all our cur_chg_col entries. Use the main palette from here on */
state->cur_chg_col = NULL;
return FALSE;
}
static void
dvdspu_render_line_with_chgcol (SpuState * state, guint8 * planes[3],
guint16 * rle_offset)
{
SpuLineCtrlI *chg_col = state->cur_chg_col;
gint16 x, next_x, disp_end, rle_code, run_end;
SpuColour *colour;
SpuPixCtrlI *cur_pix_ctrl;
SpuPixCtrlI *next_pix_ctrl;
SpuPixCtrlI *end_pix_ctrl;
SpuPixCtrlI dummy_pix_ctrl;
gint16 cur_reg_end;
gint i;
state->out_Y = planes[0];
state->out_U = state->comp_bufs[0];
state->out_V = state->comp_bufs[1];
state->out_A = state->comp_bufs[2];
/* We always need to start our RLE decoding byte_aligned */
*rle_offset = GST_ROUND_UP_2 (*rle_offset);
/* Our run will cover the display rect */
x = state->disp_rect.left;
disp_end = state->disp_rect.right + 1;
/* Work out the first pixel control info, which may point to the dummy entry if
* the global palette/alpha need using initally */
cur_pix_ctrl = chg_col->pix_ctrl_i;
end_pix_ctrl = chg_col->pix_ctrl_i + chg_col->n_changes;
if (cur_pix_ctrl->left != 0) {
next_pix_ctrl = cur_pix_ctrl;
cur_pix_ctrl = &dummy_pix_ctrl;
for (i = 0; i < 4; i++) /* Copy the main palette to our dummy entry */
dummy_pix_ctrl.pal_cache[i] = state->main_pal[i];
} else {
next_pix_ctrl = cur_pix_ctrl + 1;
}
if (next_pix_ctrl < end_pix_ctrl)
cur_reg_end = next_pix_ctrl->left;
else
cur_reg_end = disp_end;
/* Render stuff */
while (x < disp_end) {
rle_code = dvdspu_get_rle_code (state, rle_offset);
next_x = rle_end_x (rle_code, x, disp_end);
/* Now draw the run between [x,next_x), crossing palette regions as needed */
while (x < next_x) {
run_end = MIN (next_x, cur_reg_end);
if (G_LIKELY (x < run_end)) {
colour = &cur_pix_ctrl->pal_cache[rle_code & 3];
dvdspu_draw_rle_run (state, x, run_end, colour);
x = run_end;
}
if (x >= cur_reg_end) {
/* Advance to next region */
cur_pix_ctrl = next_pix_ctrl;
next_pix_ctrl++;
if (next_pix_ctrl < end_pix_ctrl)
cur_reg_end = next_pix_ctrl->left;
else
cur_reg_end = disp_end;
}
}
}
}
static void
dvdspu_blend_comp_buffers (SpuState * state, guint8 * planes[3])
void
gstspu_blend_comp_buffers (SpuState * state, guint8 * planes[3])
{
gint16 uv_end;
gint16 left, x;
guint8 *out_U;
guint8 *out_V;
guint16 *in_U;
guint16 *in_V;
guint16 *in_A;
gint16 comp_last_x = MAX (state->comp_last_x[0], state->comp_last_x[1]);
guint32 *in_U;
guint32 *in_V;
guint32 *in_A;
gint16 comp_last_x = state->comp_right;
if (comp_last_x < state->disp_rect.left)
if (comp_last_x < state->comp_left)
return; /* Didn't draw in the comp buffers, nothing to do... */
#if 0
GST_LOG ("Blending comp buffers from disp_rect.left %d to x=%d",
state->disp_rect.left, comp_last_x);
GST_LOG ("Blending comp buffers from x=%d to x=%d",
state->comp_left, state->comp_right);
#endif
/* Set up the output pointers */
@ -376,188 +77,18 @@ dvdspu_blend_comp_buffers (SpuState * state, guint8 * planes[3])
* drawn in the render_line function, divided by 2 (rounding up) to account
* for UV sub-sampling */
uv_end = (comp_last_x + 1) / 2;
left = state->disp_rect.left / 2;
left = state->comp_left / 2;
for (x = left; x < uv_end; x++) {
guint16 tmp;
guint16 inv_A = (4 * 0xf) - in_A[x];
guint32 tmp;
/* Each entry in the compositing buffer is 4 summed pixels, so the
* inverse alpha is (4 * 0x0f) - in_A[x] */
* inverse alpha is (4 * 0xff) - in_A[x] */
guint16 inv_A = (4 * 0xff) - in_A[x];
tmp = in_U[x] + inv_A * out_U[x];
out_U[x] = (guint8) (tmp / (4 * 0xf));
out_U[x] = (guint8) (tmp / (4 * 0xff));
tmp = in_V[x] + inv_A * out_V[x];
out_V[x] = (guint8) (tmp / (4 * 0xf));
out_V[x] = (guint8) (tmp / (4 * 0xff));
}
}
void
gst_dvd_spu_render_spu (GstDVDSpu * dvdspu, GstBuffer * buf)
{
SpuState *state = &dvdspu->spu_state;
guint8 *planes[3]; /* YUV frame pointers */
gint y, last_y;
/* Set up our initial state */
if (G_UNLIKELY (state->pix_buf == NULL))
return;
/* Store the start of each plane */
planes[0] = GST_BUFFER_DATA (buf);
planes[1] = planes[0] + (state->Y_height * state->Y_stride);
planes[2] = planes[1] + (state->UV_height * state->UV_stride);
/* Sanity check */
g_return_if_fail (planes[2] + (state->UV_height * state->UV_stride) <=
GST_BUFFER_DATA (buf) + GST_BUFFER_SIZE (buf));
GST_DEBUG ("Rendering SPU. disp_rect %d,%d to %d,%d. hl_rect %d,%d to %d,%d",
state->disp_rect.left, state->disp_rect.top,
state->disp_rect.right, state->disp_rect.bottom,
state->hl_rect.left, state->hl_rect.top,
state->hl_rect.right, state->hl_rect.bottom);
GST_DEBUG ("vid_disp %d,%d", state->vid_width, state->vid_height);
/* When reading RLE data, we track the offset in nibbles... */
state->cur_offsets[0] = state->pix_data[0] * 2;
state->cur_offsets[1] = state->pix_data[1] * 2;
state->max_offset = GST_BUFFER_SIZE (state->pix_buf) * 2;
/* Update all the palette caches */
dvdspu_update_palettes (dvdspu, state);
/* Set up HL or Change Color & Contrast rect tracking */
if (state->hl_rect.top != -1) {
state->cur_chg_col = &state->hl_ctrl_i;
state->cur_chg_col_end = state->cur_chg_col + 1;
} else if (state->n_line_ctrl_i > 0) {
state->cur_chg_col = state->line_ctrl_i;
state->cur_chg_col_end = state->cur_chg_col + state->n_line_ctrl_i;
} else
state->cur_chg_col = NULL;
/* We start rendering from the first line of the display rect */
y = state->disp_rect.top;
/* start_y is always an even number and we render lines in pairs from there,
* accumulating 2 lines of chroma then blending it. We might need to render a
* single line at the end if the display rect ends on an even line too. */
last_y = (state->disp_rect.bottom - 1) & ~(0x01);
/* center the image when display rectangle exceeds the video width */
if (state->vid_width < state->disp_rect.right) {
gint diff, disp_width;
disp_width = state->disp_rect.left - state->disp_rect.right;
diff = (disp_width - state->vid_width) / 2;
/* fixme, this is not used yet */
state->clip_rect.left = state->disp_rect.left + diff;
state->clip_rect.right = state->disp_rect.right - diff;
GST_DEBUG ("clipping width to %d,%d", state->clip_rect.left,
state->clip_rect.right);
} else {
state->clip_rect.left = state->disp_rect.left;
state->clip_rect.right = state->disp_rect.right;
}
/* for the height, chop off the bottom bits of the diplay rectangle because we
* assume the picture is in the lower part. We should better check where it
* is and do something more clever. */
state->clip_rect.bottom = state->disp_rect.bottom;
if (state->vid_height < state->disp_rect.bottom) {
state->clip_rect.top = state->disp_rect.bottom - state->vid_height;
GST_DEBUG ("clipping height to %d,%d", state->clip_rect.top,
state->clip_rect.bottom);
} else {
state->clip_rect.top = state->disp_rect.top;
/* Update our plane references to the first line of the disp_rect */
planes[0] += state->Y_stride * y;
planes[1] += state->UV_stride * (y / 2);
planes[2] += state->UV_stride * (y / 2);
}
for (state->cur_Y = y; state->cur_Y <= last_y; state->cur_Y++) {
gboolean clip;
clip = (state->cur_Y < state->clip_rect.top
|| state->cur_Y > state->clip_rect.bottom);
/* Reset the compositing buffer */
dvdspu_clear_comp_buffers (state);
/* Render even line */
state->comp_last_x_ptr = state->comp_last_x;
dvdspu_render_line (state, planes, &state->cur_offsets[0]);
if (!clip) {
/* Advance the luminance output pointer */
planes[0] += state->Y_stride;
}
state->cur_Y++;
/* Render odd line */
state->comp_last_x_ptr = state->comp_last_x + 1;
dvdspu_render_line (state, planes, &state->cur_offsets[1]);
/* Blend the accumulated UV compositing buffers onto the output */
dvdspu_blend_comp_buffers (state, planes);
if (!clip) {
/* Update all the output pointers */
planes[0] += state->Y_stride;
planes[1] += state->UV_stride;
planes[2] += state->UV_stride;
}
}
if (state->cur_Y == state->disp_rect.bottom) {
g_assert ((state->disp_rect.bottom & 0x01) == 0);
/* Render a remaining lone last even line. y already has the correct value
* after the above loop exited. */
dvdspu_clear_comp_buffers (state);
state->comp_last_x_ptr = state->comp_last_x;
dvdspu_render_line (state, planes, &state->cur_offsets[0]);
dvdspu_blend_comp_buffers (state, planes);
}
/* for debugging purposes, draw a faint rectangle at the edges of the disp_rect */
#if 0
do {
guint8 *cur;
gint16 pos;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->disp_rect.top;
for (pos = state->disp_rect.left + 1; pos < state->disp_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->disp_rect.bottom;
for (pos = state->disp_rect.left + 1; pos < state->disp_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->disp_rect.top;
for (pos = state->disp_rect.top; pos <= state->disp_rect.bottom; pos++) {
cur[state->disp_rect.left] = (cur[state->disp_rect.left] / 2) + 0x8;
cur[state->disp_rect.right] = (cur[state->disp_rect.right] / 2) + 0x8;
cur += state->Y_stride;
}
} while (0);
#endif
/* For debugging purposes, draw a faint rectangle around the highlight rect */
#if 0
if (state->hl_rect.top != -1) {
guint8 *cur;
gint16 pos;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.top;
for (pos = state->hl_rect.left + 1; pos < state->hl_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.bottom;
for (pos = state->hl_rect.left + 1; pos < state->hl_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.top;
for (pos = state->hl_rect.top; pos <= state->hl_rect.bottom; pos++) {
cur[state->hl_rect.left] = (cur[state->hl_rect.left] / 2) + 0x8;
cur[state->hl_rect.right] = (cur[state->hl_rect.right] / 2) + 0x8;
cur += state->Y_stride;
}
}
#endif
}

226
gst/dvdspu/gstdvdspu.c
View file

@ -39,10 +39,6 @@
#include <gst/gst.h>
#include "gstdvdspu.h"
#include "gstspu-vobsub.h"
#include "gstspu-pgs.h"
extern void gst_dvd_spu_render_spu (GstDVDSpu * dvdspu, GstBuffer * buf);
GST_DEBUG_CATEGORY (dvdspu_debug);
#define GST_CAT_DEFAULT dvdspu_debug
@ -111,6 +107,7 @@ static void gst_dvd_spu_clear (GstDVDSpu * dvdspu);
static void gst_dvd_spu_flush_spu_info (GstDVDSpu * dvdspu,
gboolean process_events);
static void gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts);
static void gstspu_render (GstDVDSpu * dvdspu, GstBuffer * buf);
static GstFlowReturn
dvdspu_handle_vid_buffer (GstDVDSpu * dvdspu, GstBuffer * buf);
static void gst_dvd_spu_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event);
@ -119,11 +116,11 @@ static void
gst_dvd_spu_base_init (gpointer gclass)
{
static GstElementDetails element_details =
GST_ELEMENT_DETAILS ("Fluendo DVD Player Sub-picture Overlay",
"Mixer/Video/Overlay/DVD",
"Parses the DVD Sub-Picture command stream and renders the SPU overlay "
GST_ELEMENT_DETAILS ("GStreamer Sub-picture Overlay",
"Mixer/Video/Overlay/DVD/Bluray",
"Parses Sub-Picture command streams and renders the SPU overlay "
"onto the video as it passes through",
"Jan Schmidt <jan@fluendo.com>");
"Jan Schmidt <thaytan@noraisin.net>");
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_add_pad_template (element_class,
@ -191,7 +188,8 @@ gst_dvd_spu_clear (GstDVDSpu * dvdspu)
{
gst_dvd_spu_flush_spu_info (dvdspu, FALSE);
gst_segment_init (&dvdspu->subp_seg, GST_FORMAT_UNDEFINED);
memcpy (dvdspu->spu_state.current_clut, default_clut, sizeof (guint32) * 16);
dvdspu->spu_input_type = SPU_INPUT_TYPE_NONE;
gst_buffer_replace (&dvdspu->ref_frame, NULL);
gst_buffer_replace (&dvdspu->pending_frame, NULL);
@ -235,10 +233,11 @@ gst_dvd_spu_finalize (GObject * object)
/* With SPU lock held, clear the queue of SPU packets */
static void
gst_dvd_spu_flush_spu_info (GstDVDSpu * dvdspu, gboolean process_events)
gst_dvd_spu_flush_spu_info (GstDVDSpu * dvdspu, gboolean keep_events)
{
SpuPacket *packet;
SpuState *state = &dvdspu->spu_state;
GQueue tmp_q = G_QUEUE_INIT;
GST_INFO_OBJECT (dvdspu, "Flushing SPU information");
@ -252,40 +251,34 @@ gst_dvd_spu_flush_spu_info (GstDVDSpu * dvdspu, gboolean process_events)
if (packet->buf) {
gst_buffer_unref (packet->buf);
g_assert (packet->event == NULL);
g_free (packet);
} else if (packet->event) {
if (process_events)
gst_dvd_spu_handle_dvd_event (dvdspu, packet->event);
else
if (keep_events) {
g_queue_push_tail (&tmp_q, packet);
} else {
gst_event_unref (packet->event);
g_free (packet);
}
}
g_free (packet);
packet = (SpuPacket *) g_queue_pop_head (dvdspu->pending_spus);
}
/* Push anything we decided to keep back onto the pending_spus list */
for (packet = g_queue_pop_head (&tmp_q); packet != NULL;
packet = g_queue_pop_head (&tmp_q))
g_queue_push_tail (dvdspu->pending_spus, packet);
if (state->buf) {
gst_buffer_unref (state->buf);
state->buf = NULL;
}
if (state->pix_buf) {
gst_buffer_unref (state->pix_buf);
state->pix_buf = NULL;
}
state->base_ts = state->next_ts = GST_CLOCK_TIME_NONE;
state->flags &= ~(SPU_STATE_FLAGS_MASK);
state->pix_data[0] = 0;
state->pix_data[1] = 0;
state->next_ts = GST_CLOCK_TIME_NONE;
state->hl_rect.top = -1;
state->hl_rect.bottom = -1;
state->disp_rect.top = -1;
state->disp_rect.bottom = -1;
state->n_line_ctrl_i = 0;
if (state->line_ctrl_i != NULL) {
g_free (state->line_ctrl_i);
state->line_ctrl_i = NULL;
switch (dvdspu->spu_input_type) {
case SPU_INPUT_TYPE_VOBSUB:
gstspu_vobsub_flush (dvdspu);
break;
case SPU_INPUT_TYPE_PGS:
gstspu_pgs_flush (dvdspu);
break;
default:
break;
}
}
@ -357,7 +350,7 @@ gst_dvd_spu_video_set_caps (GstPad * pad, GstCaps * caps)
state->UV_stride = GST_ROUND_UP_4 (state->Y_stride / 2);
for (i = 0; i < 3; i++) {
state->comp_bufs[i] = g_realloc (state->comp_bufs[i],
sizeof (guint16) * state->UV_stride);
sizeof (guint32) * state->UV_stride);
}
}
DVD_SPU_UNLOCK (dvdspu);
@ -629,7 +622,7 @@ dvdspu_handle_vid_buffer (GstDVDSpu * dvdspu, GstBuffer * buf)
/* Render the SPU overlay onto the buffer */
buf = gst_buffer_make_writable (buf);
gst_dvd_spu_render_spu (dvdspu, buf);
gstspu_render (dvdspu, buf);
} else {
if (using_ref == FALSE) {
/* Not going to draw anything on this frame, just store a reference
@ -658,6 +651,22 @@ no_ref_frame:
return GST_FLOW_OK;
}
static void
gstspu_render (GstDVDSpu * dvdspu, GstBuffer * buf)
{
switch (dvdspu->spu_input_type) {
case SPU_INPUT_TYPE_VOBSUB:
gstspu_vobsub_render (dvdspu, buf);
break;
case SPU_INPUT_TYPE_PGS:
gstspu_pgs_render (dvdspu, buf);
break;
default:
break;
}
}
/* With SPU LOCK */
static void
gst_dvd_spu_redraw_still (GstDVDSpu * dvdspu, gboolean force)
@ -681,7 +690,7 @@ gst_dvd_spu_redraw_still (GstDVDSpu * dvdspu, gboolean force)
GST_BUFFER_DURATION (buf) = GST_CLOCK_TIME_NONE;
/* Render the SPU overlay onto the buffer */
gst_dvd_spu_render_spu (dvdspu, buf);
gstspu_render (dvdspu, buf);
gst_buffer_replace (&dvdspu->pending_frame, buf);
gst_buffer_unref (buf);
} else if (force) {
@ -707,87 +716,44 @@ gst_dvd_spu_redraw_still (GstDVDSpu * dvdspu, gboolean force)
static void
gst_dvd_spu_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event)
{
const gchar *event_type;
const GstStructure *structure = gst_event_get_structure (event);
SpuState *state = &dvdspu->spu_state;
const gchar *event_type = gst_structure_get_string (structure, "event");
gboolean hl_change = FALSE;
event_type = gst_structure_get_string (structure, "event");
GST_INFO_OBJECT (dvdspu, "DVD event of type %s on subp pad OOB=%d",
event_type, (GST_EVENT_TYPE (event) == GST_EVENT_CUSTOM_DOWNSTREAM_OOB));
if (strcmp (event_type, "dvd-spu-clut-change") == 0) {
gchar prop_name[32];
gint i;
gint entry;
for (i = 0; i < 16; i++) {
g_snprintf (prop_name, 32, "clut%02d", i);
if (!gst_structure_get_int (structure, prop_name, &entry))
entry = 0;
state->current_clut[i] = (guint32) entry;
}
state->main_pal_dirty = TRUE;
state->hl_pal_dirty = TRUE;
state->line_ctrl_i_pal_dirty = TRUE;
hl_change = TRUE;
} else if (strcmp (event_type, "dvd-spu-highlight") == 0) {
gint val;
if (gst_structure_get_int (structure, "palette", &val)) {
state->hl_idx[3] = ((guint32) (val) >> 28) & 0x0f;
state->hl_idx[2] = ((guint32) (val) >> 24) & 0x0f;
state->hl_idx[1] = ((guint32) (val) >> 20) & 0x0f;
state->hl_idx[0] = ((guint32) (val) >> 16) & 0x0f;
state->hl_alpha[3] = ((guint32) (val) >> 12) & 0x0f;
state->hl_alpha[2] = ((guint32) (val) >> 8) & 0x0f;
state->hl_alpha[1] = ((guint32) (val) >> 4) & 0x0f;
state->hl_alpha[0] = ((guint32) (val) >> 0) & 0x0f;
state->hl_pal_dirty = TRUE;
}
if (gst_structure_get_int (structure, "sx", &val))
state->hl_rect.left = (gint16) val;
if (gst_structure_get_int (structure, "sy", &val))
state->hl_rect.top = (gint16) val;
if (gst_structure_get_int (structure, "ex", &val))
state->hl_rect.right = (gint16) val;
if (gst_structure_get_int (structure, "ey", &val))
state->hl_rect.bottom = (gint16) val;
GST_INFO_OBJECT (dvdspu, "Highlight rect is now (%d,%d) to (%d,%d)",
state->hl_rect.left, state->hl_rect.top,
state->hl_rect.right, state->hl_rect.bottom);
hl_change = TRUE;
} else if (strcmp (event_type, "dvd-spu-reset-highlight") == 0) {
if (state->hl_rect.top != -1 || state->hl_rect.bottom != -1)
hl_change = TRUE;
state->hl_rect.top = -1;
state->hl_rect.bottom = -1;
GST_INFO_OBJECT (dvdspu, "Highlight off");
} else if (strcmp (event_type, "dvd-set-subpicture-track") == 0) {
gboolean forced_only;
if (gst_structure_get_boolean (structure, "forced-only", &forced_only)) {
gboolean was_forced = (state->flags & SPU_STATE_FORCED_ONLY);
if (forced_only)
state->flags |= SPU_STATE_FORCED_ONLY;
else
state->flags &= ~(SPU_STATE_FORCED_ONLY);
if ((was_forced && !forced_only) || (!was_forced && forced_only))
hl_change = TRUE;
}
switch (dvdspu->spu_input_type) {
case SPU_INPUT_TYPE_VOBSUB:
hl_change = gstspu_vobsub_handle_dvd_event (dvdspu, event);
break;
case SPU_INPUT_TYPE_PGS:
hl_change = gstspu_pgs_handle_dvd_event (dvdspu, event);
break;
default:
break;
}
if (hl_change && (state->flags & SPU_STATE_STILL_FRAME)) {
if (hl_change && (dvdspu->spu_state.flags & SPU_STATE_STILL_FRAME)) {
gst_dvd_spu_redraw_still (dvdspu, FALSE);
}
}
gst_event_unref (event);
static gboolean
gstspu_execute_event (GstDVDSpu * dvdspu)
{
switch (dvdspu->spu_input_type) {
case SPU_INPUT_TYPE_VOBSUB:
return gstspu_vobsub_execute_event (dvdspu);
break;
case SPU_INPUT_TYPE_PGS:
return gstspu_pgs_execute_event (dvdspu);
break;
default:
g_assert_not_reached ();
break;
}
return FALSE;
}
/* Advance the SPU packet/command queue to a time. new_ts is in running time */
@ -796,8 +762,15 @@ gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
{
SpuState *state = &dvdspu->spu_state;
if (G_UNLIKELY (dvdspu->spu_input_type == SPU_INPUT_TYPE_NONE))
return;
while (state->next_ts == GST_CLOCK_TIME_NONE || state->next_ts <= new_ts) {
if (state->buf == NULL) {
GST_DEBUG_OBJECT (dvdspu,
"Advancing SPU from TS %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
GST_TIME_ARGS (state->next_ts), GST_TIME_ARGS (new_ts));
if (!gstspu_execute_event (dvdspu)) {
GstClockTime vid_run_ts;
/* No current command buffer, try and get one */
@ -820,11 +793,11 @@ gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
if (packet->buf) {
switch (dvdspu->spu_input_type) {
case SPU_INPUT_TYPE_VOBSUB:
gst_dvd_spu_handle_new_vobsub_buf (dvdspu, packet);
gstspu_vobsub_handle_new_buf (dvdspu, packet->event_ts,
packet->buf);
break;
case SPU_INPUT_TYPE_PGS:
gstspu_dump_pgs_buffer (packet->buf);
gst_buffer_unref (packet->buf);
gstspu_pgs_handle_new_buf (dvdspu, packet->event_ts, packet->buf);
break;
default:
g_assert_not_reached ();
@ -837,16 +810,6 @@ gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
g_free (packet);
continue;
}
GST_DEBUG_OBJECT (dvdspu,
"Advancing SPU from TS %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
GST_TIME_ARGS (state->next_ts), GST_TIME_ARGS (new_ts));
/* If we get here, we have an SPU buffer, and it's time to process the
* next cmd */
g_assert (state->buf != NULL);
gst_dvdspu_vobsub_execute_event (dvdspu);
}
}
@ -1005,6 +968,7 @@ gst_dvd_spu_subpic_chain (GstPad * pad, GstBuffer * buf)
/* FIXME: There's no need to walk the command set each time. We can set a
* marker and resume where we left off next time */
/* FIXME: Move the packet parsing and sanity checking into the format-specific modules */
while (data != end) {
if (data + 3 > end)
break;
@ -1014,7 +978,8 @@ gst_dvd_spu_subpic_chain (GstPad * pad, GstBuffer * buf)
if (data + packet_size > end)
break;
data += packet_size;
if (packet_type == PGS_COMMAND_END_DISPLAY && data != end) {
/* 0x80 is the END command for PGS packets */
if (packet_type == 0x80 && data != end) {
/* Extra cruft on the end of the packet -> assume invalid */
gst_buffer_unref (dvdspu->partial_spu);
dvdspu->partial_spu = NULL;
@ -1023,7 +988,8 @@ gst_dvd_spu_subpic_chain (GstPad * pad, GstBuffer * buf)
}
if (dvdspu->partial_spu && data == end) {
g_print ("Complete packet of size %u\n",
GST_DEBUG_OBJECT (dvdspu,
"Have complete PGS packet of size %u. Enqueueing.",
GST_BUFFER_SIZE (dvdspu->partial_spu));
submit_new_spu_packet (dvdspu, dvdspu->partial_spu);
dvdspu->partial_spu = NULL;
@ -1071,7 +1037,8 @@ gst_dvd_spu_subpic_event (GstPad * pad, GstEvent * event)
DVD_SPU_LOCK (dvdspu);
if (GST_EVENT_IS_SERIALIZED (event)) {
SpuPacket *spu_packet = g_new0 (SpuPacket, 1);
GST_DEBUG_OBJECT (dvdspu,
"Enqueueing DVD event on subpicture pad for later");
spu_packet->event = event;
g_queue_push_tail (dvdspu->pending_spus, spu_packet);
} else {
@ -1146,6 +1113,7 @@ gst_dvd_spu_subpic_event (GstPad * pad, GstEvent * event)
gst_event_unref (event);
goto done;
case GST_EVENT_FLUSH_STOP:
GST_DEBUG_OBJECT (dvdspu, "Have flush-stop event on SPU pad");
DVD_SPU_LOCK (dvdspu);
gst_segment_init (&dvdspu->subp_seg, GST_FORMAT_UNDEFINED);
gst_dvd_spu_flush_spu_info (dvdspu, TRUE);
@ -1193,8 +1161,8 @@ gst_dvd_spu_subpic_set_caps (GstPad * pad, GstCaps * caps)
if (dvdspu->spu_input_type != input_type) {
GST_INFO_OBJECT (dvdspu, "Incoming SPU packet type changed to %u",
input_type);
gst_dvd_spu_flush_spu_info (dvdspu, TRUE);
dvdspu->spu_input_type = input_type;
gst_dvd_spu_flush_spu_info (dvdspu, TRUE);
}
DVD_SPU_UNLOCK (dvdspu);
@ -1228,8 +1196,8 @@ gst_dvd_spu_change_state (GstElement * element, GstStateChange transition)
gboolean
gst_dvd_spu_plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (dvdspu_debug, "gstdvdspu",
0, "DVD Sub-picture Overlay decoder/renderer");
GST_DEBUG_CATEGORY_INIT (dvdspu_debug, "gstspu",
0, "Sub-picture Overlay decoder/renderer");
return gst_element_register (plugin, "dvdspu",
GST_RANK_NONE, GST_TYPE_DVD_SPU);

134
gst/dvdspu/gstdvdspu.h
View file

@ -16,11 +16,15 @@
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __DVD_SPU_H__
#define __DVD_SPU_H__
#ifndef __GST_DVD_SPU_H__
#define __GST_DVD_SPU_H__
#include <gst/gst.h>
#include "gstspu-common.h"
#include "gstspu-vobsub.h"
#include "gstspu-pgs.h"
G_BEGIN_DECLS
#define GST_TYPE_DVD_SPU \
@ -37,64 +41,16 @@ G_BEGIN_DECLS
#define DVD_SPU_LOCK(s) g_mutex_lock ((s)->spu_lock);
#define DVD_SPU_UNLOCK(s) g_mutex_unlock ((s)->spu_lock);
typedef struct _GstDVDSpu GstDVDSpu;
typedef struct _GstDVDSpuClass GstDVDSpuClass;
typedef struct SpuRect SpuRect;
typedef struct SpuPixCtrlI SpuPixCtrlI;
typedef struct SpuLineCtrlI SpuLineCtrlI;
typedef struct SpuColour SpuColour;
typedef enum SpuStateFlags SpuStateFlags;
typedef enum SpuInputType SpuInputType;
typedef struct SpuState SpuState;
typedef struct SpuPacket SpuPacket;
typedef enum SpuCmd SpuCmd;
/* Describe the limits of a rectangle */
struct SpuRect {
gint16 left;
gint16 top;
gint16 right;
gint16 bottom;
};
/* Store a pre-multiplied colour value. The YUV fields hold the YUV values
* multiplied by the 8-bit alpha, to save computing it while rendering */
struct SpuColour {
guint16 Y;
guint16 U;
guint16 V;
guint8 A;
};
/* Pixel Control Info from a Change Color Contrast command */
struct SpuPixCtrlI {
gint16 left;
guint32 palette;
/* Pre-multiplied palette values, updated as
* needed */
SpuColour pal_cache[4];
};
struct SpuLineCtrlI {
guint8 n_changes; /* 1 to 8 */
SpuPixCtrlI pix_ctrl_i[8];
gint16 top;
gint16 bottom;
};
enum SpuCmd {
SPU_CMD_FSTA_DSP = 0x00, /* Forced Display */
SPU_CMD_DSP = 0x01, /* Display Start */
SPU_CMD_STP_DSP = 0x02, /* Display Off */
SPU_CMD_SET_COLOR = 0x03, /* Set the color indexes for the palette */
SPU_CMD_SET_ALPHA = 0x04, /* Set the alpha indexes for the palette */
SPU_CMD_SET_DAREA = 0x05, /* Set the display area for the SPU */
SPU_CMD_DSPXA = 0x06, /* Pixel data addresses */
SPU_CMD_CHG_COLCON = 0x07, /* Change Color & Contrast */
SPU_CMD_END = 0xff
enum SpuInputType {
SPU_INPUT_TYPE_NONE = 0x00,
SPU_INPUT_TYPE_VOBSUB = 0x01,
SPU_INPUT_TYPE_PGS = 0x02
};
enum SpuStateFlags {
@ -107,79 +63,23 @@ enum SpuStateFlags {
SPU_STATE_FORCED_ONLY = 0x100
};
enum SpuInputType {
SPU_INPUT_TYPE_NONE = 0x00,
SPU_INPUT_TYPE_VOBSUB = 0x01,
SPU_INPUT_TYPE_PGS = 0x02
};
#define SPU_STATE_FLAGS_MASK (0xff)
struct SpuState {
GstClockTime next_ts; /* Next event TS in running time */
GstClockTime base_ts; /* base TS for cmd blk delays in running time */
GstBuffer *buf; /* Current SPU packet we're executing commands from */
guint16 cur_cmd_blk; /* Offset into the buf for the current cmd block */
SpuStateFlags flags;
/* Top + Bottom field offsets in the buffer. 0 = not set */
guint16 pix_data[2];
GstBuffer *pix_buf; /* Current SPU packet the pix_data references */
SpuRect disp_rect;
SpuRect clip_rect;
SpuRect hl_rect;
guint32 current_clut[16]; /* Colour lookup table from incoming events */
guint8 main_idx[4]; /* Indices for current main palette */
guint8 main_alpha[4]; /* Alpha values for main palette */
guint8 hl_idx[4]; /* Indices for current highlight palette */
guint8 hl_alpha[4]; /* Alpha values for highlight palette */
/* Pre-multiplied colour palette for the main palette */
SpuColour main_pal[4];
gboolean main_pal_dirty;
/* Line control info for rendering the highlight palette */
SpuLineCtrlI hl_ctrl_i;
gboolean hl_pal_dirty; /* Indicates that the HL palette info needs refreshing */
/* LineCtrlI Info from a Change Color & Contrast command */
SpuLineCtrlI *line_ctrl_i;
gint16 n_line_ctrl_i;
gboolean line_ctrl_i_pal_dirty; /* Indicates that the palettes for the line_ctrl_i
* need recalculating */
/* Rendering state vars below */
guint16 *comp_bufs[3]; /* Compositing buffers for U+V & A */
gint16 comp_last_x[2]; /* Maximum X values we rendered into the comp buffer (odd & even) */
gint16 *comp_last_x_ptr; /* Ptr to the current comp_last_x value to be updated by the render */
gint fps_n, fps_d;
gint16 vid_width, vid_height;
gint16 Y_stride, UV_stride;
gint16 Y_height, UV_height;
gint fps_n, fps_d;
guint32 *comp_bufs[3]; /* Compositing buffers for U+V & A */
guint16 comp_left;
guint16 comp_right;
/* Current Y Position */
gint16 cur_Y;
/* Current offset in nibbles into the pix_data */
guint16 cur_offsets[2];
guint16 max_offset;
/* current ChgColCon Line Info */
SpuLineCtrlI *cur_chg_col;
SpuLineCtrlI *cur_chg_col_end;
/* Output position tracking */
guint8 *out_Y;
guint16 *out_U;
guint16 *out_V;
guint16 *out_A;
SpuVobsubState vobsub;
SpuPgsState pgs;
};
/* Structure used to store the queue of pending SPU packets. The start_ts is
@ -229,4 +129,4 @@ GType gst_dvd_spu_get_type (void);
G_END_DECLS
#endif /* __DVD_SPU_H__ */
#endif /* __GST_DVD_SPU_H__ */

56
gst/dvdspu/gstspu-common.h Normal file
View file

@ -0,0 +1,56 @@
/* GStreamer DVD Sub-Picture Unit
* Copyright (C) 2007 Fluendo S.A. <info@fluendo.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GSTSPU_COMMON_H__
#define __GSTSPU_COMMON_H__
#include <glib.h>
G_BEGIN_DECLS
/* FIXME: Move this back to gstdvdspu.h when the renderers no longer use it: */
typedef struct _GstDVDSpu GstDVDSpu;
typedef struct SpuState SpuState;
typedef struct SpuColour SpuColour;
typedef struct SpuRect SpuRect;
/* Describe the limits of a rectangle */
struct SpuRect {
gint16 left;
gint16 top;
gint16 right;
gint16 bottom;
};
/* Store a pre-multiplied colour value. The YUV fields hold the YUV values
* multiplied by the 8-bit alpha, to save computing it while rendering */
struct SpuColour {
guint16 Y;
guint16 U;
guint16 V;
guint8 A;
};
void gstspu_clear_comp_buffers (SpuState * state);
void gstspu_blend_comp_buffers (SpuState * state, guint8 * planes[3]);
G_END_DECLS
#endif /* __GSTSPU_COMMON_H__ */

588
gst/dvdspu/gstspu-pgs.c
View file

@ -23,6 +23,7 @@
#include <string.h>
#include <gst/gst.h>
#include "gstdvdspu.h"
#include "gstspu-pgs.h"
const struct PgsFrameRateEntry
@ -35,12 +36,32 @@ const struct PgsFrameRateEntry
64, 30000, 1001} /* 29.97 FPS */
};
gboolean in_presentation_segment = FALSE;
guint8 *rle_data = NULL;
guint32 rle_data_size = 0, rle_data_used = 0;
PgsPaletteEntry palette[256];
typedef enum PgsCommandType PgsCommandType;
enum PgsCommandType
{
PGS_COMMAND_SET_PALETTE = 0x14,
PGS_COMMAND_SET_OBJECT_DATA = 0x15,
PGS_COMMAND_PRESENTATION_SEGMENT = 0x16,
PGS_COMMAND_SET_WINDOW = 0x17,
PGS_COMMAND_INTERACTIVE_SEGMENT = 0x18,
PGS_COMMAND_END_DISPLAY = 0x80,
PGS_COMMAND_INVALID = 0xFFFF
};
static gint gstspu_exec_pgs_buffer (GstDVDSpu * dvdspu, GstBuffer * buf);
#define DUMP_CMDS 0
#define DUMP_FULL_IMAGE 0
#define DUMP_FULL_PALETTE 0
#if DUMP_CMDS
#define PGS_DUMP(...) g_print(__VA_ARGS__)
#else
#define PGS_DUMP(...)
#endif
static void
dump_bytes (guint8 * data, guint16 len)
@ -49,19 +70,20 @@ dump_bytes (guint8 * data, guint16 len)
/* Dump the numbers */
for (i = 0; i < len; i++) {
g_print ("0x%02x ", data[i]);
PGS_DUMP ("0x%02x ", data[i]);
if (!((i + 1) % 16))
g_print ("\n");
PGS_DUMP ("\n");
}
if (len > 0 && (i % 16))
g_print ("\n");
PGS_DUMP ("\n");
}
static void
dump_rle_data (guint8 * data, guint32 len)
dump_rle_data (GstDVDSpu * dvdspu, guint8 * data, guint32 len)
{
guint8 *end = data + len;
guint16 obj_w, obj_h;
guint x = 0;
if (data + 4 > end)
return;
@ -70,42 +92,36 @@ dump_rle_data (guint8 * data, guint32 len)
obj_w = GST_READ_UINT16_BE (data);
obj_h = GST_READ_UINT16_BE (data + 2);
data += 4;
g_print ("RLE image is %ux%u\n", obj_w, obj_h);
PGS_DUMP ("RLE image is %ux%u\n", obj_w, obj_h);
while (data < end) {
guint8 pal_id;
guint16 run_len;
if (data[0] != 0) {
// g_print ("data 0x%02x\n", data[0]);
pal_id = *data++;
pal_id = *data++;
if (pal_id != 0) {
// PGS_DUMP ("data 0x%02x\n", data[0]);
run_len = 1;
} else {
data++;
if (data + 1 > end)
return;
switch (data[0] & 0xC0) {
case 0x00:
//g_print ("data 0x%02x\n", data[0]);
//PGS_DUMP ("data 0x%02x\n", data[0]);
run_len = (data[0] & 0x3f);
if (run_len > 0)
pal_id = 0;
data++;
break;
case 0x40:
if (data + 2 > end)
return;
//g_print ("data 0x%02x 0x%02x\n", data[0], data[1]);
//PGS_DUMP ("data 0x%02x 0x%02x\n", data[0], data[1]);
run_len = ((data[0] << 8) | data[1]) & 0x3fff;
if (run_len > 0)
pal_id = 0;
data += 2;
break;
case 0x80:
if (data + 2 > end)
return;
//g_print ("data 0x%02x 0x%02x\n", data[0], data[1]);
//PGS_DUMP ("data 0x%02x 0x%02x\n", data[0], data[1]);
run_len = (data[0] & 0x3f);
pal_id = data[1];
data += 2;
@ -113,7 +129,7 @@ dump_rle_data (guint8 * data, guint32 len)
case 0xC0:
if (data + 3 > end)
return;
//g_print ("data 0x%02x 0x%02x 0x%02x\n", data[0], data[1], data[2]);
//PGS_DUMP ("data 0x%02x 0x%02x 0x%02x\n", data[0], data[1], data[2]);
run_len = ((data[0] << 8) | data[1]) & 0x3fff;
pal_id = data[2];
data += 3;
@ -124,113 +140,302 @@ dump_rle_data (guint8 * data, guint32 len)
#if DUMP_FULL_IMAGE
{
gint i;
guint x = 0;
#if 1
if (palette[pal_id].A) {
if (dvdspu->spu_state.pgs.palette[pal_id].A) {
guint8 val = dvdspu->spu_state.pgs.palette[pal_id].A;
for (i = 0; i < run_len; i++)
g_print ("%02x ", pal_id);
PGS_DUMP ("%02x ", val);
} else {
for (i = 0; i < run_len; i++)
g_print (" ");
}
x += run_len;
if (!run_len || x > obj_w) {
g_print ("\n");
x = 0;
PGS_DUMP (" ");
}
if (!run_len || (x + run_len) > obj_w)
PGS_DUMP ("\n");
#else
g_print ("Run x: %d pix: %d col: %d\n", x, run_len, pal_id);
x += run_len;
if (x >= obj_w)
x = 0;
PGS_DUMP ("Run x: %d pix: %d col: %d\n", x, run_len, pal_id);
#endif
}
#endif
x += run_len;
if (!run_len || x > obj_w)
x = 0;
};
g_print ("\n");
PGS_DUMP ("\n");
}
static void
pgs_composition_object_render (PgsCompositionObject * obj, SpuState * state,
GstBuffer * dest_buf)
{
SpuColour *colour;
guint8 *planes[3]; /* YUV frame pointers */
guint8 *data, *end;
guint16 obj_w, obj_h;
guint x, y, i, max_x;
if (G_UNLIKELY (obj->rle_data == NULL || obj->rle_data_size == 0
|| obj->rle_data_used != obj->rle_data_size))
return;
data = obj->rle_data;
end = data + obj->rle_data_used;
if (data + 4 > end)
return;
/* FIXME: Calculate and use the cropping window for the output, as the
* intersection of the crop rectangle for this object (if any) and the
* window specified by the object's window_id */
/* Store the start of each plane */
planes[0] = GST_BUFFER_DATA (dest_buf);
planes[1] = planes[0] + (state->Y_height * state->Y_stride);
planes[2] = planes[1] + (state->UV_height * state->UV_stride);
/* Sanity check */
g_return_if_fail (planes[2] + (state->UV_height * state->UV_stride) <=
GST_BUFFER_DATA (dest_buf) + GST_BUFFER_SIZE (dest_buf));
x = obj->x;
y = obj->y;
planes[0] += state->Y_stride * y;
planes[1] += state->UV_stride * (y / 2);
planes[2] += state->UV_stride * (y / 2);
/* RLE data: */
obj_w = GST_READ_UINT16_BE (data);
obj_h = GST_READ_UINT16_BE (data + 2);
data += 4;
max_x = x + obj_w;
state->comp_left = x;
state->comp_right = max_x;
gstspu_clear_comp_buffers (state);
while (data < end) {
guint8 pal_id;
guint16 run_len;
pal_id = *data++;
if (pal_id != 0) {
run_len = 1;
} else {
if (data + 1 > end)
return;
switch (data[0] & 0xC0) {
case 0x00:
run_len = (data[0] & 0x3f);
data++;
break;
case 0x40:
if (data + 2 > end)
return;
run_len = ((data[0] << 8) | data[1]) & 0x3fff;
data += 2;
break;
case 0x80:
if (data + 2 > end)
return;
run_len = (data[0] & 0x3f);
pal_id = data[1];
data += 2;
break;
case 0xC0:
if (data + 3 > end)
return;
run_len = ((data[0] << 8) | data[1]) & 0x3fff;
pal_id = data[2];
data += 3;
break;
}
}
colour = &state->pgs.palette[pal_id];
if (colour->A) {
guint32 inv_A = 0xff - colour->A;
for (i = 0; i < run_len; i++) {
planes[0][x] = (inv_A * planes[0][x] + colour->Y) / 0xff;
state->comp_bufs[0][x / 2] += colour->U;
state->comp_bufs[1][x / 2] += colour->V;
state->comp_bufs[2][x / 2] += colour->A;
x++;
}
} else {
x += run_len;
}
if (!run_len || x > max_x) {
x = state->pgs.win_x;
planes[0] += state->Y_stride;
if (y % 2) {
gstspu_blend_comp_buffers (state, planes);
gstspu_clear_comp_buffers (state);
planes[1] += state->UV_stride;
planes[2] += state->UV_stride;
}
y++;
}
}
if (y % 2)
gstspu_blend_comp_buffers (state, planes);
}
static void
pgs_composition_object_clear (PgsCompositionObject * obj)
{
if (obj->rle_data) {
g_free (obj->rle_data);
obj->rle_data = NULL;
}
obj->rle_data_size = obj->rle_data_used = 0;
}
static void
pgs_presentation_segment_set_object_count (PgsPresentationSegment * ps,
guint8 n_objects)
{
if (ps->objects == NULL) {
ps->objects =
g_array_sized_new (FALSE, TRUE, sizeof (PgsCompositionObject),
n_objects);
g_array_set_size (ps->objects, n_objects);
return;
}
/* Clear memory in any extraneous objects */
if (ps->objects->len > n_objects) {
guint i;
for (i = n_objects; i < ps->objects->len; i++) {
PgsCompositionObject *cur =
&g_array_index (ps->objects, PgsCompositionObject, i);
pgs_composition_object_clear (cur);
}
}
g_array_set_size (ps->objects, n_objects);
if (n_objects == 0) {
g_array_free (ps->objects, TRUE);
ps->objects = NULL;
}
}
static PgsCompositionObject *
pgs_presentation_segment_find_object (PgsPresentationSegment * ps,
guint16 obj_id)
{
guint i;
if (ps->objects == NULL)
return NULL;
for (i = 0; i < ps->objects->len; i++) {
PgsCompositionObject *cur =
&g_array_index (ps->objects, PgsCompositionObject, i);
if (cur->id == obj_id)
return cur;
}
return NULL;
}
static int
parse_presentation_segment (guint8 type, guint8 * payload, guint16 len)
parse_presentation_segment (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
guint8 *end = payload + len;
guint16 vid_w, vid_h;
gint8 vid_fps;
guint16 composition_desc_no;
guint8 composition_desc_state;
guint8 pres_seg_flags;
guint8 palette_id;
guint8 n_objects;
PgsPresentationSegment *ps = &dvdspu->spu_state.pgs.pres_seg;
guint8 n_objects, palette_id;
gint i;
/* Parse video descriptor */
if (payload + 5 > end)
return 0;
vid_w = GST_READ_UINT16_BE (payload);
vid_h = GST_READ_UINT16_BE (payload + 2);
vid_fps = payload[4];
ps->vid_w = GST_READ_UINT16_BE (payload);
ps->vid_h = GST_READ_UINT16_BE (payload + 2);
ps->vid_fps_code = payload[4];
payload += 5;
/* Parse composition descriptor */
if (payload + 3 > end)
return 0;
composition_desc_no = GST_READ_UINT16_BE (payload);
composition_desc_state = payload[2];
ps->composition_no = GST_READ_UINT16_BE (payload);
ps->composition_state = payload[2];
payload += 3;
/* Parse other bits */
if (payload + 3 > end)
return 0;
pres_seg_flags = payload[0];
ps->flags = payload[0];
palette_id = payload[1];
n_objects = payload[2];
payload += 3;
g_print ("Video width %u height %u fps code %u\n", vid_w, vid_h, vid_fps);
g_print
("Composition num %u state %u flags 0x%02x palette id %u n_objects %u\n",
composition_desc_no, composition_desc_state, pres_seg_flags, palette_id,
if (ps->flags & PGS_PRES_SEGMENT_FLAG_UPDATE_PALETTE)
ps->palette_id = palette_id;
PGS_DUMP ("Video width %u height %u fps code %u\n", ps->vid_w, ps->vid_h,
ps->vid_fps_code);
PGS_DUMP
("Composition num %u state 0x%02x flags 0x%02x palette id %u n_objects %u\n",
ps->composition_no, ps->composition_state, ps->flags, ps->palette_id,
n_objects);
pgs_presentation_segment_set_object_count (ps, n_objects);
for (i = 0; i < (gint) n_objects; i++) {
guint16 obj_id;
guint8 win_id;
guint8 obj_flags;
guint16 x, y;
PgsCompositionObject *obj =
&g_array_index (ps->objects, PgsCompositionObject, i);
if (payload + 8 > end)
break;
obj_id = GST_READ_UINT16_BE (payload);
win_id = payload[2];
obj_flags = payload[3];
x = GST_READ_UINT16_BE (payload + 4);
y = GST_READ_UINT16_BE (payload + 6);
obj->id = GST_READ_UINT16_BE (payload);
obj->win_id = payload[2];
obj->flags = payload[3];
obj->x = GST_READ_UINT16_BE (payload + 4);
obj->y = GST_READ_UINT16_BE (payload + 6);
obj->rle_data_size = obj->rle_data_used = 0;
payload += 8;
g_print ("Composition object %d Object ID %u Window ID %u flags 0x%02x "
"x %u y %u\n", i, obj_id, win_id, obj_flags, x, y);
PGS_DUMP ("Composition object %d Object ID %u Window ID %u flags 0x%02x "
"x %u y %u\n", i, obj->id, obj->win_id, obj->flags, obj->x, obj->y);
if (obj_flags & PGS_COMP_OBJECT_FLAG_CROPPED) {
guint16 crop_x, crop_y, crop_w, crop_h;
if (obj->flags & PGS_COMPOSITION_OBJECT_FLAG_CROPPED) {
if (payload + 8 > end)
break;
crop_x = GST_READ_UINT16_BE (payload);
crop_y = GST_READ_UINT16_BE (payload + 2);
crop_w = GST_READ_UINT16_BE (payload + 4);
crop_h = GST_READ_UINT16_BE (payload + 6);
obj->crop_x = GST_READ_UINT16_BE (payload);
obj->crop_y = GST_READ_UINT16_BE (payload + 2);
obj->crop_w = GST_READ_UINT16_BE (payload + 4);
obj->crop_h = GST_READ_UINT16_BE (payload + 6);
payload += 8;
g_print ("Cropping window x %u y %u w %u h %u\n",
crop_x, crop_y, crop_w, crop_h);
PGS_DUMP ("Cropping window x %u y %u w %u h %u\n",
obj->crop_x, obj->crop_y, obj->crop_w, obj->crop_h);
}
if (obj->flags & ~(PGS_COMPOSITION_OBJECT_FLAG_CROPPED |
PGS_COMPOSITION_OBJECT_FLAG_FORCED))
g_warning ("PGS Composition Object has unknown flags: 0x%02x",
obj->flags);
}
if (payload != end) {
g_print ("%u bytes left over:\n", end - payload);
g_warning ("PGS Composition Object: %d bytes not consumed", end - payload);
dump_bytes (payload, end - payload);
}
@ -238,8 +443,11 @@ parse_presentation_segment (guint8 type, guint8 * payload, guint16 len)
}
static int
parse_set_palette (guint8 type, guint8 * payload, guint16 len)
parse_set_palette (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
SpuState *state = &dvdspu->spu_state;
const gint PGS_PALETTE_ENTRY_SIZE = 5;
guint8 *end = payload + len;
guint8 palette_id;
@ -254,33 +462,40 @@ parse_set_palette (guint8 type, guint8 * payload, guint16 len)
n_entries = (len - 2) / PGS_PALETTE_ENTRY_SIZE;
g_print ("Palette ID %u version %u. %d entries\n",
PGS_DUMP ("Palette ID %u version %u. %d entries\n",
palette_id, palette_version, n_entries);
for (i = 0; i < 256; i++)
state->pgs.palette[i].A = 0;
for (i = 0; i < n_entries; i++) {
guint8 n, Y, Cb, Cr, A;
guint8 n, Y, U, V, A;
n = payload[0];
palette[n].n = n;
palette[n].Y = Y = payload[1];
palette[n].Cb = Cb = payload[2];
palette[n].Cr = Cr = payload[3];
palette[n].A = A = payload[4];
Y = payload[1];
U = payload[2];
V = payload[3];
A = payload[4];
g_print ("Entry %3d: Y %3d Cb %3d Cr %3d A %3d ", n, Y, Cb, Cr, A);
#if DUMP_FULL_PALETTE
PGS_DUMP ("Entry %3d: Y %3d U %3d V %3d A %3d ", n, Y, U, V, A);
if (((i + 1) % 2) == 0)
g_print ("\n");
PGS_DUMP ("\n");
#endif
/* Premultiply the palette entries by the alpha */
state->pgs.palette[n].Y = Y * A;
state->pgs.palette[n].U = U * A;
state->pgs.palette[n].V = V * A;
state->pgs.palette[n].A = A;
payload += PGS_PALETTE_ENTRY_SIZE;
}
for (i = n_entries; i < 256; i++) {
palette[i].n = i;
palette[i].A = 0;
}
#if DUMP_FULL_PALETTE
if (n_entries > 0 && (i % 2))
g_print ("\n");
PGS_DUMP ("\n");
#endif
if (payload != end) {
g_print ("%u bytes left over:\n", end - payload);
g_warning ("PGS Set Palette: %d bytes not consumed", end - payload);
dump_bytes (payload, end - payload);
}
@ -288,11 +503,12 @@ parse_set_palette (guint8 type, guint8 * payload, guint16 len)
}
static int
parse_set_window (guint8 type, guint8 * payload, guint16 len)
parse_set_window (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
SpuState *state = &dvdspu->spu_state;
guint8 *end = payload + len;
guint8 win_id, win_ver;
guint16 x, y, w, h;
if (payload + 10 > end)
return 0;
@ -302,17 +518,18 @@ parse_set_window (guint8 type, guint8 * payload, guint16 len)
/* FIXME: This is just a guess as to what the numbers mean: */
win_id = payload[0];
win_ver = payload[1];
x = GST_READ_UINT16_BE (payload + 2);
y = GST_READ_UINT16_BE (payload + 4);
w = GST_READ_UINT16_BE (payload + 6);
h = GST_READ_UINT16_BE (payload + 8);
state->pgs.win_x = GST_READ_UINT16_BE (payload + 2);
state->pgs.win_y = GST_READ_UINT16_BE (payload + 4);
state->pgs.win_w = GST_READ_UINT16_BE (payload + 6);
state->pgs.win_h = GST_READ_UINT16_BE (payload + 8);
payload += 10;
g_print ("Win ID %u version %d x %d y %d w %d h %d\n",
win_id, win_ver, x, y, w, h);
PGS_DUMP ("Win ID %u version %d x %d y %d w %d h %d\n",
win_id, win_ver, state->pgs.win_x, state->pgs.win_y, state->pgs.win_w,
state->pgs.win_h);
if (payload != end) {
g_print ("%u bytes left over:\n", end - payload);
g_warning ("PGS Set Window: %d bytes not consumed", end - payload);
dump_bytes (payload, end - payload);
}
@ -320,51 +537,60 @@ parse_set_window (guint8 type, guint8 * payload, guint16 len)
}
static int
parse_set_object_data (guint8 type, guint8 * payload, guint16 len)
parse_set_object_data (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
SpuPgsState *pgs_state = &dvdspu->spu_state.pgs;
PgsCompositionObject *obj;
guint8 *end = payload + len;
guint16 obj_id;
guint8 obj_ver, obj_flags;
guint8 obj_ver, flags;
if (payload + 4 > end)
return 0;
obj_id = GST_READ_UINT16_BE (payload);
obj_ver = payload[2];
obj_flags = payload[3];
flags = payload[3];
payload += 4;
g_print ("Object ID %d ver %u flags 0x%02x\n", obj_id, obj_ver, obj_flags);
obj = pgs_presentation_segment_find_object (&(pgs_state->pres_seg), obj_id);
if (obj_flags & PGS_OBJECT_UPDATE_FLAG_START_RLE) {
PGS_DUMP ("Object ID %d ver %u flags 0x%02x\n", obj_id, obj_ver, flags);
if (flags & PGS_OBJECT_UPDATE_FLAG_START_RLE) {
obj->rle_data_ver = obj_ver;
if (payload + 3 > end)
return 0;
rle_data_size = GST_READ_UINT24_BE (payload);
obj->rle_data_size = GST_READ_UINT24_BE (payload);
payload += 3;
g_print ("%d bytes of RLE data, of %d bytes total.\n",
end - payload, rle_data_size);
PGS_DUMP ("%d bytes of RLE data, of %d bytes total.\n",
end - payload, obj->rle_data_size);
rle_data = g_realloc (rle_data, rle_data_size);
rle_data_used = end - payload;
memcpy (rle_data, payload, end - payload);
obj->rle_data = g_realloc (obj->rle_data, obj->rle_data_size);
obj->rle_data_used = end - payload;
memcpy (obj->rle_data, payload, end - payload);
payload = end;
} else {
g_print ("%d bytes of additional RLE data\n", end - payload);
if (rle_data_size < rle_data_used + end - payload)
return 0;
PGS_DUMP ("%d bytes of additional RLE data\n", end - payload);
/* Check that the data chunk is for this object version, and fits in the buffer */
if (obj->rle_data_ver == obj_ver &&
obj->rle_data_used + end - payload <= obj->rle_data_size) {
memcpy (rle_data + rle_data_used, payload, end - payload);
rle_data_used += end - payload;
payload = end;
memcpy (obj->rle_data + obj->rle_data_used, payload, end - payload);
obj->rle_data_used += end - payload;
payload = end;
}
}
if (rle_data_size == rle_data_used)
dump_rle_data (rle_data, rle_data_size);
if (obj->rle_data_size == obj->rle_data_used)
dump_rle_data (dvdspu, obj->rle_data, obj->rle_data_size);
if (payload != end) {
g_print ("%u bytes left over:\n", end - payload);
g_warning ("PGS Set Object Data: %d bytes not consumed", end - payload);
dump_bytes (payload, end - payload);
}
@ -372,56 +598,61 @@ parse_set_object_data (guint8 type, guint8 * payload, guint16 len)
}
static int
parse_pgs_packet (guint8 type, guint8 * payload, guint16 len)
parse_pgs_packet (GstDVDSpu * dvdspu, guint8 type, guint8 * payload,
guint16 len)
{
SpuPgsState *pgs_state = &dvdspu->spu_state.pgs;
int ret = 0;
if (!in_presentation_segment && type != PGS_COMMAND_PRESENTATION_SEGMENT) {
g_print ("Expected BEGIN PRESENTATION SEGMENT command. "
if (!pgs_state->in_presentation_segment
&& type != PGS_COMMAND_PRESENTATION_SEGMENT) {
PGS_DUMP ("Expected BEGIN PRESENTATION SEGMENT command. "
"Got command type 0x%02x len %u. Skipping\n", type, len);
return 0;
}
switch (type) {
case PGS_COMMAND_PRESENTATION_SEGMENT:
g_print ("*******************************************\n"
PGS_DUMP ("*******************************************\n"
"Begin PRESENTATION_SEGMENT (0x%02x) packet len %u\n", type, len);
in_presentation_segment = TRUE;
ret = parse_presentation_segment (type, payload, len);
pgs_state->in_presentation_segment =
pgs_state->have_presentation_segment = TRUE;
ret = parse_presentation_segment (dvdspu, type, payload, len);
break;
case PGS_COMMAND_SET_OBJECT_DATA:
g_print ("*** Set Object Data (0x%02x) packet len %u\n", type, len);
ret = parse_set_object_data (type, payload, len);
PGS_DUMP ("*** Set Object Data (0x%02x) packet len %u\n", type, len);
ret = parse_set_object_data (dvdspu, type, payload, len);
break;
case PGS_COMMAND_SET_PALETTE:
g_print ("*** Set Palette (0x%02x) packet len %u\n", type, len);
ret = parse_set_palette (type, payload, len);
PGS_DUMP ("*** Set Palette (0x%02x) packet len %u\n", type, len);
ret = parse_set_palette (dvdspu, type, payload, len);
break;
case PGS_COMMAND_SET_WINDOW:
g_print ("*** Set Window command (0x%02x) packet len %u\n", type, len);
ret = parse_set_window (type, payload, len);
PGS_DUMP ("*** Set Window command (0x%02x) packet len %u\n", type, len);
ret = parse_set_window (dvdspu, type, payload, len);
break;
case PGS_COMMAND_INTERACTIVE_SEGMENT:
g_print ("*** Interactive Segment command(0x%02x) packet len %u\n",
PGS_DUMP ("*** Interactive Segment command(0x%02x) packet len %u\n",
type, len);
dump_bytes (payload, len);
break;
case PGS_COMMAND_END_DISPLAY:
g_print ("*** End Display command (0x%02x) packet len %u\n", type, len);
in_presentation_segment = FALSE;
PGS_DUMP ("*** End Display command (0x%02x) packet len %u\n", type,
len);
pgs_state->in_presentation_segment = FALSE;
break;
default:
g_print ("*** Unknown command: type 0x%02x len %u. Skipping\n", type,
len);
g_warning ("Unknown PGS command: type 0x%02x len %u", type, len);
dump_bytes (payload, len);
break;
}
g_print ("\n");
PGS_DUMP ("\n");
return ret;
}
gint
gstspu_dump_pgs_buffer (GstBuffer * buf)
gstspu_exec_pgs_buffer (GstDVDSpu * dvdspu, GstBuffer * buf)
{
guint8 *pos, *end;
guint8 type;
@ -432,11 +663,11 @@ gstspu_dump_pgs_buffer (GstBuffer * buf)
/* Need at least 3 bytes */
if (pos + 3 > end) {
g_print ("Not enough bytes to be a PGS packet\n");
PGS_DUMP ("Not enough bytes to be a PGS packet\n");
return -1;
}
g_print ("Begin dumping command buffer of size %u ts %" GST_TIME_FORMAT "\n",
PGS_DUMP ("Begin dumping command buffer of size %u ts %" GST_TIME_FORMAT "\n",
end - pos, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
do {
type = *pos++;
@ -444,17 +675,88 @@ gstspu_dump_pgs_buffer (GstBuffer * buf)
pos += 2;
if (pos + packet_len > end) {
g_print ("Invalid packet length %u (only have %u bytes)\n", packet_len,
PGS_DUMP ("Invalid packet length %u (only have %u bytes)\n", packet_len,
end - pos);
return -1;
}
if (parse_pgs_packet (type, pos, packet_len))
if (parse_pgs_packet (dvdspu, type, pos, packet_len))
return -1;
pos += packet_len;
} while (pos + 3 <= end);
g_print ("End dumping command buffer with %u bytes remaining\n", end - pos);
PGS_DUMP ("End dumping command buffer with %u bytes remaining\n", end - pos);
return (pos - GST_BUFFER_DATA (buf));
}
void
gstspu_pgs_handle_new_buf (GstDVDSpu * dvdspu, GstClockTime event_ts,
GstBuffer * buf)
{
SpuState *state = &dvdspu->spu_state;
state->next_ts = event_ts;
state->pgs.pending_cmd = buf;
}
gboolean
gstspu_pgs_execute_event (GstDVDSpu * dvdspu)
{
SpuState *state = &dvdspu->spu_state;
if (state->pgs.pending_cmd) {
gstspu_exec_pgs_buffer (dvdspu, state->pgs.pending_cmd);
gst_buffer_unref (state->pgs.pending_cmd);
state->pgs.pending_cmd = NULL;
}
state->next_ts = GST_CLOCK_TIME_NONE;
state->flags &= ~SPU_STATE_DISPLAY;
if (state->pgs.have_presentation_segment) {
if (state->pgs.pres_seg.objects && state->pgs.pres_seg.objects->len > 0)
state->flags |= SPU_STATE_DISPLAY;
}
return FALSE;
}
void
gstspu_pgs_render (GstDVDSpu * dvdspu, GstBuffer * buf)
{
SpuState *state = &dvdspu->spu_state;
PgsPresentationSegment *ps = &state->pgs.pres_seg;
guint i;
if (ps->objects == NULL)
return;
for (i = 0; i < ps->objects->len; i++) {
PgsCompositionObject *cur =
&g_array_index (ps->objects, PgsCompositionObject, i);
pgs_composition_object_render (cur, state, buf);
}
}
gboolean
gstspu_pgs_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event)
{
return FALSE;
}
void
gstspu_pgs_flush (GstDVDSpu * dvdspu)
{
SpuPgsState *pgs_state = &dvdspu->spu_state.pgs;
if (pgs_state->pending_cmd) {
gst_buffer_unref (pgs_state->pending_cmd);
pgs_state->pending_cmd = NULL;
}
pgs_state->have_presentation_segment = FALSE;
pgs_state->in_presentation_segment = FALSE;
pgs_presentation_segment_set_object_count (&pgs_state->pres_seg, 0);
pgs_state->win_x = pgs_state->win_y = pgs_state->win_w = pgs_state->win_h = 0;
}

100
gst/dvdspu/gstspu-pgs.h
View file

@ -20,41 +20,87 @@
#ifndef __GSTSPU_PGS_H__
#define __GSTSPU_PGS_H__
typedef enum PgsCommandType {
PGS_COMMAND_SET_PALETTE = 0x14,
PGS_COMMAND_SET_OBJECT_DATA = 0x15,
PGS_COMMAND_PRESENTATION_SEGMENT = 0x16,
PGS_COMMAND_SET_WINDOW = 0x17,
PGS_COMMAND_INTERACTIVE_SEGMENT = 0x18,
#include "gstspu-common.h"
PGS_COMMAND_END_DISPLAY = 0x80,
typedef struct SpuPgsState SpuPgsState;
typedef enum PgsCompositionObjectFlags PgsCompositionObjectFlags;
typedef enum PgsPresentationSegmentFlags PgsPresentationSegmentFlags;
typedef enum PgsObjectUpdateFlags PgsObjectUpdateFlags;
PGS_COMMAND_INVALID = 0xFFFF
} PgsCommandType;
typedef struct PgsPresentationSegment PgsPresentationSegment;
typedef struct PgsCompositionObject PgsCompositionObject;
typedef enum PgsPresSegmentFlags {
PGS_PRES_SEGMENT_FLAG_UPDATE_PALETTE = 0x80
} PgsPresSegmentFlags;
enum PgsPresentationSegmentFlags
{
PGS_PRES_SEGMENT_FLAG_UPDATE_PALETTE = 0x80
};
typedef enum PgsCompObjectFlags {
PGS_COMP_OBJECT_FLAG_CROPPED = 0x80,
PGS_COMP_OBJECT_FLAG_FORCED = 0x40
} PgsCompObjectFlags;
enum PgsCompositionObjectFlags
{
PGS_COMPOSITION_OBJECT_FLAG_CROPPED = 0x80,
PGS_COMPOSITION_OBJECT_FLAG_FORCED = 0x40
};
typedef enum PgsObjectUpdateFlags {
enum PgsObjectUpdateFlags
{
/* Set in an object_update if this is the beginning of new RLE data.
* If not set, the data is a continuation to be appended */
PGS_OBJECT_UPDATE_FLAG_START_RLE = 0x80
} PgsObjectUpdateFlags;
PGS_OBJECT_UPDATE_FLAG_START_RLE = 0x80,
PGS_OBJECT_UPDATE_FLAG_END_RLE = 0x40 /* This one is a guess */
};
typedef struct PgsPaletteEntry {
guint8 n;
guint8 Y;
guint8 Cb;
guint8 Cr;
guint8 A;
} PgsPaletteEntry;
struct PgsPresentationSegment
{
guint16 composition_no;
guint8 composition_state;
gint gstspu_dump_pgs_buffer (GstBuffer *buf);
PgsPresentationSegmentFlags flags;
guint8 palette_id;
guint16 vid_w, vid_h;
guint8 vid_fps_code;
GArray *objects;
};
struct PgsCompositionObject
{
guint16 id;
guint8 version;
PgsCompositionObjectFlags flags;
guint8 win_id;
guint8 rle_data_ver;
guint8 *rle_data;
guint32 rle_data_size;
guint32 rle_data_used;
/* Top left corner of this object */
guint16 x, y;
/* Only valid if PGS_COMPOSITION_OBJECT_FLAG_CROPPED is set */
guint16 crop_x, crop_y, crop_w, crop_h;
};
struct SpuPgsState {
GstBuffer *pending_cmd;
gboolean in_presentation_segment;
gboolean have_presentation_segment;
PgsPresentationSegment pres_seg;
SpuColour palette[256];
guint16 win_x, win_y, win_w, win_h;
};
void gstspu_pgs_handle_new_buf (GstDVDSpu * dvdspu, GstClockTime event_ts, GstBuffer *buf);
gboolean gstspu_pgs_execute_event (GstDVDSpu *dvdspu);
void gstspu_pgs_render (GstDVDSpu *dvdspu, GstBuffer *buf);
gboolean gstspu_pgs_handle_dvd_event (GstDVDSpu *dvdspu, GstEvent *event);
void gstspu_pgs_flush (GstDVDSpu *dvdspu);
#endif

536
gst/dvdspu/gstspu-vobsub-render.c Normal file
View file

@ -0,0 +1,536 @@
/* GStreamer DVD Sub-Picture Unit
* Copyright (C) 2007 Fluendo S.A. <info@fluendo.com>
* Copyright (C) 2009 Jan Schmidt <thaytan@noraisin.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <gst/gst.h>
#include "gstdvdspu.h"
GST_DEBUG_CATEGORY_EXTERN (dvdspu_debug);
#define GST_CAT_DEFAULT dvdspu_debug
static void
gstspu_vobsub_recalc_palette (GstDVDSpu * dvdspu,
SpuColour * dest, guint8 * idx, guint8 * alpha)
{
SpuState *state = &dvdspu->spu_state;
gint i;
for (i = 0; i < 4; i++, dest++) {
guint32 col = state->vobsub.current_clut[idx[i]];
/* Convert incoming 4-bit alpha to 8 bit for blending */
dest->A = (alpha[i] << 4) | alpha[i];
dest->Y = ((guint16) ((col >> 16) & 0xff)) * dest->A;
/* U/V are stored as V/U in the clut words, so switch them */
dest->V = ((guint16) ((col >> 8) & 0xff)) * dest->A;
dest->U = ((guint16) (col & 0xff)) * dest->A;
}
}
/* Recalculate the main, HL & ChgCol palettes */
static void
gstspu_vobsub_update_palettes (GstDVDSpu * dvdspu, SpuState * state)
{
guint8 index[4]; /* Indices for the palette */
guint8 alpha[4]; /* Alpha values the palette */
if (state->vobsub.main_pal_dirty) {
gstspu_vobsub_recalc_palette (dvdspu, state->vobsub.main_pal,
state->vobsub.main_idx, state->vobsub.main_alpha);
/* Need to refresh the hl_ctrl info copies of the main palette too */
memcpy (state->vobsub.hl_ctrl_i.pix_ctrl_i[0].pal_cache,
state->vobsub.main_pal, 4 * sizeof (SpuColour));
memcpy (state->vobsub.hl_ctrl_i.pix_ctrl_i[2].pal_cache,
state->vobsub.main_pal, 4 * sizeof (SpuColour));
state->vobsub.main_pal_dirty = FALSE;
}
if (state->vobsub.hl_pal_dirty) {
gstspu_vobsub_recalc_palette (dvdspu,
state->vobsub.hl_ctrl_i.pix_ctrl_i[1].pal_cache, state->vobsub.hl_idx,
state->vobsub.hl_alpha);
state->vobsub.hl_pal_dirty = FALSE;
}
/* Update the offset positions for the highlight region */
if (state->vobsub.hl_rect.top != -1) {
state->vobsub.hl_ctrl_i.top = state->vobsub.hl_rect.top;
state->vobsub.hl_ctrl_i.bottom = state->vobsub.hl_rect.bottom;
state->vobsub.hl_ctrl_i.n_changes = 3;
state->vobsub.hl_ctrl_i.pix_ctrl_i[0].left = 0;
state->vobsub.hl_ctrl_i.pix_ctrl_i[1].left = state->vobsub.hl_rect.left;
state->vobsub.hl_ctrl_i.pix_ctrl_i[2].left =
state->vobsub.hl_rect.right + 1;
}
if (state->vobsub.line_ctrl_i_pal_dirty) {
gint16 l, c;
GST_LOG_OBJECT (dvdspu, "Updating chg-col-con palettes");
for (l = 0; l < state->vobsub.n_line_ctrl_i; l++) {
SpuVobsubLineCtrlI *cur_line_ctrl = state->vobsub.line_ctrl_i + l;
for (c = 0; c < cur_line_ctrl->n_changes; c++) {
SpuVobsubPixCtrlI *cur = cur_line_ctrl->pix_ctrl_i + c;
index[3] = (cur->palette >> 28) & 0x0f;
index[2] = (cur->palette >> 24) & 0x0f;
index[1] = (cur->palette >> 20) & 0x0f;
index[0] = (cur->palette >> 16) & 0x0f;
alpha[3] = (cur->palette >> 12) & 0x0f;
alpha[2] = (cur->palette >> 8) & 0x0f;
alpha[1] = (cur->palette >> 4) & 0x0f;
alpha[0] = (cur->palette) & 0x0f;
gstspu_vobsub_recalc_palette (dvdspu, cur->pal_cache, index, alpha);
}
}
state->vobsub.line_ctrl_i_pal_dirty = FALSE;
}
}
static inline guint8
gstspu_vobsub_get_nibble (SpuState * state, guint16 * rle_offset)
{
guint8 ret;
if (G_UNLIKELY (*rle_offset >= state->vobsub.max_offset))
return 0; /* Overran the buffer */
ret = GST_BUFFER_DATA (state->vobsub.pix_buf)[(*rle_offset) / 2];
/* If the offset is even, we shift the answer down 4 bits, otherwise not */
if (*rle_offset & 0x01)
ret &= 0x0f;
else
ret = ret >> 4;
(*rle_offset)++;
return ret;
}
static guint16
gstspu_vobsub_get_rle_code (SpuState * state, guint16 * rle_offset)
{
guint16 code;
code = gstspu_vobsub_get_nibble (state, rle_offset);
if (code < 0x4) { /* 4 .. f */
code = (code << 4) | gstspu_vobsub_get_nibble (state, rle_offset);
if (code < 0x10) { /* 1x .. 3x */
code = (code << 4) | gstspu_vobsub_get_nibble (state, rle_offset);
if (code < 0x40) { /* 04x .. 0fx */
code = (code << 4) | gstspu_vobsub_get_nibble (state, rle_offset);
}
}
}
return code;
}
static inline void
gstspu_vobsub_draw_rle_run (SpuState * state, gint16 x, gint16 end,
SpuColour * colour)
{
#if 0
GST_LOG ("Y: %d x: %d end %d col %d %d %d %d",
state->vobsub.cur_Y, x, end, colour->Y, colour->U, colour->V, colour->A);
#endif
if (colour->A != 0) {
guint32 inv_A = 0xff - colour->A;
/* FIXME: This could be more efficient */
while (x < end) {
state->vobsub.out_Y[x] =
(inv_A * state->vobsub.out_Y[x] + colour->Y) / 0xff;
state->vobsub.out_U[x / 2] += colour->U;
state->vobsub.out_V[x / 2] += colour->V;
state->vobsub.out_A[x / 2] += colour->A;
x++;
}
/* Update the compositing buffer so we know how much to blend later */
*(state->vobsub.comp_last_x_ptr) = end;
}
}
static inline gint16
rle_end_x (guint16 rle_code, gint16 x, gint16 end)
{
/* run length = rle_code >> 2 */
if (G_UNLIKELY (((rle_code >> 2) == 0)))
return end;
else
return MIN (end, x + (rle_code >> 2));
}
static void gstspu_vobsub_render_line_with_chgcol (SpuState * state,
guint8 * planes[3], guint16 * rle_offset);
static gboolean gstspu_vobsub_update_chgcol (SpuState * state);
static void
gstspu_vobsub_render_line (SpuState * state, guint8 * planes[3],
guint16 * rle_offset)
{
gint16 x, next_x, end, rle_code;
SpuColour *colour;
/* Check for special case of chg_col info to use (either highlight or
* ChgCol command */
if (state->vobsub.cur_chg_col != NULL) {
if (gstspu_vobsub_update_chgcol (state)) {
/* Check the top & bottom, because we might not be within the region yet */
if (state->vobsub.cur_Y >= state->vobsub.cur_chg_col->top &&
state->vobsub.cur_Y <= state->vobsub.cur_chg_col->bottom) {
gstspu_vobsub_render_line_with_chgcol (state, planes, rle_offset);
return;
}
}
}
/* No special case. Render as normal */
/* Set up our output pointers */
state->vobsub.out_Y = planes[0];
state->vobsub.out_U = state->comp_bufs[0];
state->vobsub.out_V = state->comp_bufs[1];
state->vobsub.out_A = state->comp_bufs[2];
/* We always need to start our RLE decoding byte_aligned */
*rle_offset = GST_ROUND_UP_2 (*rle_offset);
x = state->vobsub.disp_rect.left;
end = state->vobsub.disp_rect.right + 1;
while (x < end) {
rle_code = gstspu_vobsub_get_rle_code (state, rle_offset);
colour = &state->vobsub.main_pal[rle_code & 3];
next_x = rle_end_x (rle_code, x, end);
/* Now draw the run between [x,next_x) */
gstspu_vobsub_draw_rle_run (state, x, next_x, colour);
x = next_x;
}
}
static gboolean
gstspu_vobsub_update_chgcol (SpuState * state)
{
if (state->vobsub.cur_chg_col == NULL)
return FALSE;
if (state->vobsub.cur_Y <= state->vobsub.cur_chg_col->bottom)
return TRUE;
while (state->vobsub.cur_chg_col < state->vobsub.cur_chg_col_end) {
if (state->vobsub.cur_Y >= state->vobsub.cur_chg_col->top &&
state->vobsub.cur_Y <= state->vobsub.cur_chg_col->bottom) {
#if 0
g_print ("Stopped @ entry %d with top %d bottom %d, cur_y %d",
(gint16) (state->vobsub.cur_chg_col - state->vobsub.line_ctrl_i),
state->vobsub.cur_chg_col->top, state->vobsub.cur_chg_col->bottom, y);
#endif
return TRUE;
}
state->vobsub.cur_chg_col++;
}
/* Finished all our cur_chg_col entries. Use the main palette from here on */
state->vobsub.cur_chg_col = NULL;
return FALSE;
}
static void
gstspu_vobsub_render_line_with_chgcol (SpuState * state, guint8 * planes[3],
guint16 * rle_offset)
{
SpuVobsubLineCtrlI *chg_col = state->vobsub.cur_chg_col;
gint16 x, next_x, disp_end, rle_code, run_end;
SpuColour *colour;
SpuVobsubPixCtrlI *cur_pix_ctrl;
SpuVobsubPixCtrlI *next_pix_ctrl;
SpuVobsubPixCtrlI *end_pix_ctrl;
SpuVobsubPixCtrlI dummy_pix_ctrl;
gint16 cur_reg_end;
gint i;
state->vobsub.out_Y = planes[0];
state->vobsub.out_U = state->comp_bufs[0];
state->vobsub.out_V = state->comp_bufs[1];
state->vobsub.out_A = state->comp_bufs[2];
/* We always need to start our RLE decoding byte_aligned */
*rle_offset = GST_ROUND_UP_2 (*rle_offset);
/* Our run will cover the display rect */
x = state->vobsub.disp_rect.left;
disp_end = state->vobsub.disp_rect.right + 1;
/* Work out the first pixel control info, which may point to the dummy entry if
* the global palette/alpha need using initally */
cur_pix_ctrl = chg_col->pix_ctrl_i;
end_pix_ctrl = chg_col->pix_ctrl_i + chg_col->n_changes;
if (cur_pix_ctrl->left != 0) {
next_pix_ctrl = cur_pix_ctrl;
cur_pix_ctrl = &dummy_pix_ctrl;
for (i = 0; i < 4; i++) /* Copy the main palette to our dummy entry */
dummy_pix_ctrl.pal_cache[i] = state->vobsub.main_pal[i];
} else {
next_pix_ctrl = cur_pix_ctrl + 1;
}
if (next_pix_ctrl < end_pix_ctrl)
cur_reg_end = next_pix_ctrl->left;
else
cur_reg_end = disp_end;
/* Render stuff */
while (x < disp_end) {
rle_code = gstspu_vobsub_get_rle_code (state, rle_offset);
next_x = rle_end_x (rle_code, x, disp_end);
/* Now draw the run between [x,next_x), crossing palette regions as needed */
while (x < next_x) {
run_end = MIN (next_x, cur_reg_end);
if (G_LIKELY (x < run_end)) {
colour = &cur_pix_ctrl->pal_cache[rle_code & 3];
gstspu_vobsub_draw_rle_run (state, x, run_end, colour);
x = run_end;
}
if (x >= cur_reg_end) {
/* Advance to next region */
cur_pix_ctrl = next_pix_ctrl;
next_pix_ctrl++;
if (next_pix_ctrl < end_pix_ctrl)
cur_reg_end = next_pix_ctrl->left;
else
cur_reg_end = disp_end;
}
}
}
}
static void
gstspu_vobsub_blend_comp_buffers (SpuState * state, guint8 * planes[3])
{
state->comp_left = state->vobsub.disp_rect.left;
state->comp_right =
MAX (state->vobsub.comp_last_x[0], state->vobsub.comp_last_x[1]);
gstspu_blend_comp_buffers (state, planes);
}
void
gstspu_vobsub_clear_comp_buffers (SpuState * state)
{
state->comp_left = state->vobsub.disp_rect.left;
state->comp_right = state->vobsub.disp_rect.right;
gstspu_clear_comp_buffers (state);
state->vobsub.comp_last_x[0] = -1;
state->vobsub.comp_last_x[1] = -1;
}
void
gstspu_vobsub_render (GstDVDSpu * dvdspu, GstBuffer * buf)
{
SpuState *state = &dvdspu->spu_state;
guint8 *planes[3]; /* YUV frame pointers */
gint y, last_y;
/* Set up our initial state */
if (G_UNLIKELY (state->vobsub.pix_buf == NULL))
return;
/* Store the start of each plane */
planes[0] = GST_BUFFER_DATA (buf);
planes[1] = planes[0] + (state->Y_height * state->Y_stride);
planes[2] = planes[1] + (state->UV_height * state->UV_stride);
/* Sanity check */
g_return_if_fail (planes[2] + (state->UV_height * state->UV_stride) <=
GST_BUFFER_DATA (buf) + GST_BUFFER_SIZE (buf));
GST_DEBUG ("Rendering SPU. disp_rect %d,%d to %d,%d. hl_rect %d,%d to %d,%d",
state->vobsub.disp_rect.left, state->vobsub.disp_rect.top,
state->vobsub.disp_rect.right, state->vobsub.disp_rect.bottom,
state->vobsub.hl_rect.left, state->vobsub.hl_rect.top,
state->vobsub.hl_rect.right, state->vobsub.hl_rect.bottom);
GST_DEBUG ("vid_disp %d,%d", state->vid_width, state->vid_height);
/* When reading RLE data, we track the offset in nibbles... */
state->vobsub.cur_offsets[0] = state->vobsub.pix_data[0] * 2;
state->vobsub.cur_offsets[1] = state->vobsub.pix_data[1] * 2;
state->vobsub.max_offset = GST_BUFFER_SIZE (state->vobsub.pix_buf) * 2;
/* Update all the palette caches */
gstspu_vobsub_update_palettes (dvdspu, state);
/* Set up HL or Change Color & Contrast rect tracking */
if (state->vobsub.hl_rect.top != -1) {
state->vobsub.cur_chg_col = &state->vobsub.hl_ctrl_i;
state->vobsub.cur_chg_col_end = state->vobsub.cur_chg_col + 1;
} else if (state->vobsub.n_line_ctrl_i > 0) {
state->vobsub.cur_chg_col = state->vobsub.line_ctrl_i;
state->vobsub.cur_chg_col_end =
state->vobsub.cur_chg_col + state->vobsub.n_line_ctrl_i;
} else
state->vobsub.cur_chg_col = NULL;
/* We start rendering from the first line of the display rect */
y = state->vobsub.disp_rect.top;
/* start_y is always an even number and we render lines in pairs from there,
* accumulating 2 lines of chroma then blending it. We might need to render a
* single line at the end if the display rect ends on an even line too. */
last_y = (state->vobsub.disp_rect.bottom - 1) & ~(0x01);
/* center the image when display rectangle exceeds the video width */
if (state->vid_width < state->vobsub.disp_rect.right) {
gint diff, disp_width;
disp_width = state->vobsub.disp_rect.left - state->vobsub.disp_rect.right;
diff = (disp_width - state->vid_width) / 2;
/* fixme, this is not used yet */
state->vobsub.clip_rect.left = state->vobsub.disp_rect.left + diff;
state->vobsub.clip_rect.right = state->vobsub.disp_rect.right - diff;
GST_DEBUG ("clipping width to %d,%d", state->vobsub.clip_rect.left,
state->vobsub.clip_rect.right);
} else {
state->vobsub.clip_rect.left = state->vobsub.disp_rect.left;
state->vobsub.clip_rect.right = state->vobsub.disp_rect.right;
}
/* for the height, chop off the bottom bits of the diplay rectangle because we
* assume the picture is in the lower part. We should better check where it
* is and do something more clever. */
state->vobsub.clip_rect.bottom = state->vobsub.disp_rect.bottom;
if (state->vid_height < state->vobsub.disp_rect.bottom) {
state->vobsub.clip_rect.top =
state->vobsub.disp_rect.bottom - state->vid_height;
GST_DEBUG ("clipping height to %d,%d", state->vobsub.clip_rect.top,
state->vobsub.clip_rect.bottom);
} else {
state->vobsub.clip_rect.top = state->vobsub.disp_rect.top;
/* Update our plane references to the first line of the disp_rect */
planes[0] += state->Y_stride * y;
planes[1] += state->UV_stride * (y / 2);
planes[2] += state->UV_stride * (y / 2);
}
for (state->vobsub.cur_Y = y; state->vobsub.cur_Y <= last_y;
state->vobsub.cur_Y++) {
gboolean clip;
clip = (state->vobsub.cur_Y < state->vobsub.clip_rect.top
|| state->vobsub.cur_Y > state->vobsub.clip_rect.bottom);
/* Reset the compositing buffer */
gstspu_clear_comp_buffers (state);
/* Render even line */
state->vobsub.comp_last_x_ptr = state->vobsub.comp_last_x;
gstspu_vobsub_render_line (state, planes, &state->vobsub.cur_offsets[0]);
if (!clip) {
/* Advance the luminance output pointer */
planes[0] += state->Y_stride;
}
state->vobsub.cur_Y++;
/* Render odd line */
state->vobsub.comp_last_x_ptr = state->vobsub.comp_last_x + 1;
gstspu_vobsub_render_line (state, planes, &state->vobsub.cur_offsets[1]);
/* Blend the accumulated UV compositing buffers onto the output */
gstspu_vobsub_blend_comp_buffers (state, planes);
if (!clip) {
/* Update all the output pointers */
planes[0] += state->Y_stride;
planes[1] += state->UV_stride;
planes[2] += state->UV_stride;
}
}
if (state->vobsub.cur_Y == state->vobsub.disp_rect.bottom) {
g_assert ((state->vobsub.disp_rect.bottom & 0x01) == 0);
/* Render a remaining lone last even line. y already has the correct value
* after the above loop exited. */
gstspu_clear_comp_buffers (state);
state->vobsub.comp_last_x_ptr = state->vobsub.comp_last_x;
gstspu_vobsub_render_line (state, planes, &state->vobsub.cur_offsets[0]);
gstspu_vobsub_blend_comp_buffers (state, planes);
}
/* for debugging purposes, draw a faint rectangle at the edges of the disp_rect */
#if 0
do {
guint8 *cur;
gint16 pos;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->vobsub.disp_rect.top;
for (pos = state->vobsub.disp_rect.left + 1;
pos < state->vobsub.disp_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur =
GST_BUFFER_DATA (buf) +
state->Y_stride * state->vobsub.disp_rect.bottom;
for (pos = state->vobsub.disp_rect.left + 1;
pos < state->vobsub.disp_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->vobsub.disp_rect.top;
for (pos = state->vobsub.disp_rect.top;
pos <= state->vobsub.disp_rect.bottom; pos++) {
cur[state->vobsub.disp_rect.left] =
(cur[state->vobsub.disp_rect.left] / 2) + 0x8;
cur[state->vobsub.disp_rect.right] =
(cur[state->vobsub.disp_rect.right] / 2) + 0x8;
cur += state->Y_stride;
}
} while (0);
#endif
/* For debugging purposes, draw a faint rectangle around the highlight rect */
#if 0
if (state->hl_rect.top != -1) {
guint8 *cur;
gint16 pos;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.top;
for (pos = state->hl_rect.left + 1; pos < state->hl_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.bottom;
for (pos = state->hl_rect.left + 1; pos < state->hl_rect.right; pos++)
cur[pos] = (cur[pos] / 2) + 0x8;
cur = GST_BUFFER_DATA (buf) + state->Y_stride * state->hl_rect.top;
for (pos = state->hl_rect.top; pos <= state->hl_rect.bottom; pos++) {
cur[state->hl_rect.left] = (cur[state->hl_rect.left] / 2) + 0x8;
cur[state->hl_rect.right] = (cur[state->hl_rect.right] / 2) + 0x8;
cur += state->Y_stride;
}
}
#endif
}

252
gst/dvdspu/gstspu-vobsub.c
View file

@ -36,6 +36,21 @@ GST_DEBUG_CATEGORY_EXTERN (dvdspu_debug);
/* Convert an STM offset in the SPU sequence to a GStreamer timestamp */
#define STM_TO_GST(stm) ((GST_MSECOND * 1024 * (stm)) / 90)
typedef enum SpuVobsubCmd SpuVobsubCmd;
enum SpuVobsubCmd
{
SPU_CMD_FSTA_DSP = 0x00, /* Forced Display */
SPU_CMD_DSP = 0x01, /* Display Start */
SPU_CMD_STP_DSP = 0x02, /* Display Off */
SPU_CMD_SET_COLOR = 0x03, /* Set the color indexes for the palette */
SPU_CMD_SET_ALPHA = 0x04, /* Set the alpha indexes for the palette */
SPU_CMD_SET_DAREA = 0x05, /* Set the display area for the SPU */
SPU_CMD_DSPXA = 0x06, /* Pixel data addresses */
SPU_CMD_CHG_COLCON = 0x07, /* Change Color & Contrast */
SPU_CMD_END = 0xff
};
static void
gst_dvd_spu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
{
@ -45,10 +60,10 @@ gst_dvd_spu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
gint16 i;
/* Clear any existing chg colcon info */
state->n_line_ctrl_i = 0;
if (state->line_ctrl_i != NULL) {
g_free (state->line_ctrl_i);
state->line_ctrl_i = NULL;
state->vobsub.n_line_ctrl_i = 0;
if (state->vobsub.line_ctrl_i != NULL) {
g_free (state->vobsub.line_ctrl_i);
state->vobsub.line_ctrl_i = NULL;
}
GST_DEBUG_OBJECT (dvdspu, "Change Color & Contrast. Pixel data = %d bytes",
(gint16) (end - data));
@ -75,12 +90,12 @@ gst_dvd_spu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
n_entries++;
}
state->n_line_ctrl_i = n_entries;
state->line_ctrl_i = g_new (SpuLineCtrlI, n_entries);
state->vobsub.n_line_ctrl_i = n_entries;
state->vobsub.line_ctrl_i = g_new (SpuVobsubLineCtrlI, n_entries);
cur = data;
for (i = 0; i < n_entries; i++) {
SpuLineCtrlI *cur_line_ctrl = state->line_ctrl_i + i;
SpuVobsubLineCtrlI *cur_line_ctrl = state->vobsub.line_ctrl_i + i;
guint8 n_changes = CLAMP ((cur[2] >> 4), 1, 8);
guint8 c;
@ -93,7 +108,7 @@ gst_dvd_spu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
cur += 4;
for (c = 0; c < n_changes; c++) {
SpuPixCtrlI *cur_pix_ctrl = cur_line_ctrl->pix_ctrl_i + c;
SpuVobsubPixCtrlI *cur_pix_ctrl = cur_line_ctrl->pix_ctrl_i + c;
cur_pix_ctrl->left = ((cur[0] << 8) & 0x300) | cur[1];
cur_pix_ctrl->palette = GST_READ_UINT32_BE (cur + 2);
@ -134,17 +149,17 @@ gst_dvd_spu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
if (G_UNLIKELY (data + 3 >= end))
return; /* Invalid SET_COLOR cmd at the end of the blk */
state->main_idx[3] = data[1] >> 4;
state->main_idx[2] = data[1] & 0x0f;
state->main_idx[1] = data[2] >> 4;
state->main_idx[0] = data[2] & 0x0f;
state->vobsub.main_idx[3] = data[1] >> 4;
state->vobsub.main_idx[2] = data[1] & 0x0f;
state->vobsub.main_idx[1] = data[2] >> 4;
state->vobsub.main_idx[0] = data[2] & 0x0f;
state->main_pal_dirty = TRUE;
state->vobsub.main_pal_dirty = TRUE;
GST_DEBUG_OBJECT (dvdspu,
" Set Color bg %u pattern %u emph-1 %u emph-2 %u",
state->main_idx[0], state->main_idx[1], state->main_idx[2],
state->main_idx[3]);
state->vobsub.main_idx[0], state->vobsub.main_idx[1],
state->vobsub.main_idx[2], state->vobsub.main_idx[3]);
data += 3;
break;
}
@ -152,22 +167,22 @@ gst_dvd_spu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
if (G_UNLIKELY (data + 3 >= end))
return; /* Invalid SET_ALPHA cmd at the end of the blk */
state->main_alpha[3] = data[1] >> 4;
state->main_alpha[2] = data[1] & 0x0f;
state->main_alpha[1] = data[2] >> 4;
state->main_alpha[0] = data[2] & 0x0f;
state->vobsub.main_alpha[3] = data[1] >> 4;
state->vobsub.main_alpha[2] = data[1] & 0x0f;
state->vobsub.main_alpha[1] = data[2] >> 4;
state->vobsub.main_alpha[0] = data[2] & 0x0f;
state->main_pal_dirty = TRUE;
state->vobsub.main_pal_dirty = TRUE;
GST_DEBUG_OBJECT (dvdspu,
" Set Alpha bg %u pattern %u emph-1 %u emph-2 %u",
state->main_alpha[0], state->main_alpha[1], state->main_alpha[2],
state->main_alpha[3]);
state->vobsub.main_alpha[0], state->vobsub.main_alpha[1],
state->vobsub.main_alpha[2], state->vobsub.main_alpha[3]);
data += 3;
break;
}
case SPU_CMD_SET_DAREA:{
SpuRect *r = &state->disp_rect;
SpuRect *r = &state->vobsub.disp_rect;
if (G_UNLIKELY (data + 7 >= end))
return; /* Invalid SET_DAREA cmd at the end of the blk */
@ -188,14 +203,14 @@ gst_dvd_spu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
if (G_UNLIKELY (data + 5 >= end))
return; /* Invalid SET_DSPXE cmd at the end of the blk */
state->pix_data[0] = GST_READ_UINT16_BE (data + 1);
state->pix_data[1] = GST_READ_UINT16_BE (data + 3);
/* Store a reference to the current command buffer, as that's where
state->vobsub.pix_data[0] = GST_READ_UINT16_BE (data + 1);
state->vobsub.pix_data[1] = GST_READ_UINT16_BE (data + 3);
/* Store a reference to the current command buffer, as that's where
* we'll need to take our pixel data from */
gst_buffer_replace (&state->pix_buf, state->buf);
gst_buffer_replace (&state->vobsub.pix_buf, state->vobsub.buf);
GST_DEBUG_OBJECT (dvdspu, " Set Pixel Data Offsets top: %u bot: %u",
state->pix_data[0], state->pix_data[1]);
state->vobsub.pix_data[0], state->vobsub.pix_data[1]);
data += 5;
break;
@ -214,7 +229,7 @@ gst_dvd_spu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
return; /* Invalid CHG_COLCON cmd at the end of the blk */
gst_dvd_spu_parse_chg_colcon (dvdspu, data + 2, data + field_size);
state->line_ctrl_i_pal_dirty = TRUE;
state->vobsub.line_ctrl_i_pal_dirty = TRUE;
data += field_size;
break;
}
@ -232,8 +247,8 @@ gst_dvd_spu_finish_spu_buf (GstDVDSpu * dvdspu)
{
SpuState *state = &dvdspu->spu_state;
state->next_ts = state->base_ts = GST_CLOCK_TIME_NONE;
gst_buffer_replace (&state->buf, NULL);
state->next_ts = state->vobsub.base_ts = GST_CLOCK_TIME_NONE;
gst_buffer_replace (&state->vobsub.buf, NULL);
GST_DEBUG_OBJECT (dvdspu, "Finished SPU buffer");
}
@ -250,11 +265,11 @@ gst_dvd_spu_setup_cmd_blk (GstDVDSpu * dvdspu, guint16 cmd_blk_offset,
return FALSE; /* No valid command block to read */
delay = GST_READ_UINT16_BE (cmd_blk);
state->next_ts = state->base_ts + STM_TO_GST (delay);
state->cur_cmd_blk = cmd_blk_offset;
state->next_ts = state->vobsub.base_ts + STM_TO_GST (delay);
state->vobsub.cur_cmd_blk = cmd_blk_offset;
GST_DEBUG_OBJECT (dvdspu, "Setup CMD Block @ %u with TS %" GST_TIME_FORMAT,
state->cur_cmd_blk, GST_TIME_ARGS (state->next_ts));
state->vobsub.cur_cmd_blk, GST_TIME_ARGS (state->next_ts));
return TRUE;
}
@ -304,36 +319,37 @@ gst_dvd_spu_dump_dcsq (GstDVDSpu * dvdspu,
#endif
void
gst_dvd_spu_handle_new_vobsub_buf (GstDVDSpu * dvdspu, SpuPacket * packet)
gstspu_vobsub_handle_new_buf (GstDVDSpu * dvdspu, GstClockTime event_ts,
GstBuffer * buf)
{
guint8 *start, *end;
SpuState *state = &dvdspu->spu_state;
#if DUMP_DCSQ
gst_dvd_spu_dump_dcsq (dvdspu, packet->event_ts, packet->buf);
gst_dvd_spu_dump_dcsq (dvdspu, event_ts, buf);
#endif
if (G_UNLIKELY (GST_BUFFER_SIZE (packet->buf) < 4))
if (G_UNLIKELY (GST_BUFFER_SIZE (buf) < 4))
goto invalid;
if (state->buf != NULL) {
gst_buffer_unref (state->buf);
state->buf = NULL;
if (state->vobsub.buf != NULL) {
gst_buffer_unref (state->vobsub.buf);
state->vobsub.buf = NULL;
}
state->buf = packet->buf;
state->base_ts = packet->event_ts;
state->vobsub.buf = buf;
state->vobsub.base_ts = event_ts;
start = GST_BUFFER_DATA (state->buf);
end = start + GST_BUFFER_SIZE (state->buf);
start = GST_BUFFER_DATA (state->vobsub.buf);
end = start + GST_BUFFER_SIZE (state->vobsub.buf);
/* Configure the first command block in this buffer as our initial blk */
state->cur_cmd_blk = GST_READ_UINT16_BE (start + 2);
gst_dvd_spu_setup_cmd_blk (dvdspu, state->cur_cmd_blk, start, end);
state->vobsub.cur_cmd_blk = GST_READ_UINT16_BE (start + 2);
gst_dvd_spu_setup_cmd_blk (dvdspu, state->vobsub.cur_cmd_blk, start, end);
/* Clear existing chg-colcon info */
state->n_line_ctrl_i = 0;
if (state->line_ctrl_i != NULL) {
g_free (state->line_ctrl_i);
state->line_ctrl_i = NULL;
state->vobsub.n_line_ctrl_i = 0;
if (state->vobsub.line_ctrl_i != NULL) {
g_free (state->vobsub.line_ctrl_i);
state->vobsub.line_ctrl_i = NULL;
}
return;
@ -342,36 +358,156 @@ invalid:
gst_dvd_spu_finish_spu_buf (dvdspu);
}
void
gst_dvdspu_vobsub_execute_event (GstDVDSpu * dvdspu)
gboolean
gstspu_vobsub_execute_event (GstDVDSpu * dvdspu)
{
guint8 *start, *cmd_blk, *end;
guint16 next_blk;
SpuState *state = &dvdspu->spu_state;
if (state->vobsub.buf == NULL)
return FALSE;
GST_DEBUG_OBJECT (dvdspu, "Executing cmd blk with TS %" GST_TIME_FORMAT
" @ offset %u", GST_TIME_ARGS (state->next_ts), state->cur_cmd_blk);
" @ offset %u", GST_TIME_ARGS (state->next_ts),
state->vobsub.cur_cmd_blk);
start = GST_BUFFER_DATA (state->buf);
end = start + GST_BUFFER_SIZE (state->buf);
start = GST_BUFFER_DATA (state->vobsub.buf);
end = start + GST_BUFFER_SIZE (state->vobsub.buf);
cmd_blk = start + state->cur_cmd_blk;
cmd_blk = start + state->vobsub.cur_cmd_blk;
if (G_UNLIKELY (cmd_blk + 5 >= end)) {
/* Invalid. Finish the buffer and loop again */
gst_dvd_spu_finish_spu_buf (dvdspu);
return;
return FALSE;
}
gst_dvd_spu_exec_cmd_blk (dvdspu, cmd_blk + 4, end);
next_blk = GST_READ_UINT16_BE (cmd_blk + 2);
if (next_blk != state->cur_cmd_blk) {
if (next_blk != state->vobsub.cur_cmd_blk) {
/* Advance to the next block of commands */
gst_dvd_spu_setup_cmd_blk (dvdspu, next_blk, start, end);
} else {
/* Next Block points to the current block, so we're finished with this
* SPU buffer */
gst_dvd_spu_finish_spu_buf (dvdspu);
return FALSE;
}
return TRUE;
}
gboolean
gstspu_vobsub_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event)
{
const gchar *event_type;
const GstStructure *structure = gst_event_get_structure (event);
SpuState *state = &dvdspu->spu_state;
gboolean hl_change = FALSE;
event_type = gst_structure_get_string (structure, "event");
if (strcmp (event_type, "dvd-spu-clut-change") == 0) {
gchar prop_name[32];
gint i;
gint entry;
for (i = 0; i < 16; i++) {
g_snprintf (prop_name, 32, "clut%02d", i);
if (!gst_structure_get_int (structure, prop_name, &entry))
entry = 0;
state->vobsub.current_clut[i] = (guint32) entry;
}
state->vobsub.main_pal_dirty = TRUE;
state->vobsub.hl_pal_dirty = TRUE;
state->vobsub.line_ctrl_i_pal_dirty = TRUE;
hl_change = TRUE;
} else if (strcmp (event_type, "dvd-spu-highlight") == 0) {
gint val;
if (gst_structure_get_int (structure, "palette", &val)) {
state->vobsub.hl_idx[3] = ((guint32) (val) >> 28) & 0x0f;
state->vobsub.hl_idx[2] = ((guint32) (val) >> 24) & 0x0f;
state->vobsub.hl_idx[1] = ((guint32) (val) >> 20) & 0x0f;
state->vobsub.hl_idx[0] = ((guint32) (val) >> 16) & 0x0f;
state->vobsub.hl_alpha[3] = ((guint32) (val) >> 12) & 0x0f;
state->vobsub.hl_alpha[2] = ((guint32) (val) >> 8) & 0x0f;
state->vobsub.hl_alpha[1] = ((guint32) (val) >> 4) & 0x0f;
state->vobsub.hl_alpha[0] = ((guint32) (val) >> 0) & 0x0f;
state->vobsub.hl_pal_dirty = TRUE;
}
if (gst_structure_get_int (structure, "sx", &val))
state->vobsub.hl_rect.left = (gint16) val;
if (gst_structure_get_int (structure, "sy", &val))
state->vobsub.hl_rect.top = (gint16) val;
if (gst_structure_get_int (structure, "ex", &val))
state->vobsub.hl_rect.right = (gint16) val;
if (gst_structure_get_int (structure, "ey", &val))
state->vobsub.hl_rect.bottom = (gint16) val;
GST_INFO_OBJECT (dvdspu, "Highlight rect is now (%d,%d) to (%d,%d)",
state->vobsub.hl_rect.left, state->vobsub.hl_rect.top,
state->vobsub.hl_rect.right, state->vobsub.hl_rect.bottom);
hl_change = TRUE;
} else if (strcmp (event_type, "dvd-spu-reset-highlight") == 0) {
if (state->vobsub.hl_rect.top != -1 || state->vobsub.hl_rect.bottom != -1)
hl_change = TRUE;
state->vobsub.hl_rect.top = -1;
state->vobsub.hl_rect.bottom = -1;
GST_INFO_OBJECT (dvdspu, "Highlight off");
} else if (strcmp (event_type, "dvd-set-subpicture-track") == 0) {
gboolean forced_only;
if (gst_structure_get_boolean (structure, "forced-only", &forced_only)) {
gboolean was_forced = (state->flags & SPU_STATE_FORCED_ONLY);
if (forced_only)
state->flags |= SPU_STATE_FORCED_ONLY;
else
state->flags &= ~(SPU_STATE_FORCED_ONLY);
if (was_forced != forced_only)
hl_change = TRUE;
}
}
gst_event_unref (event);
return hl_change;
}
void
gstspu_vobsub_flush (GstDVDSpu * dvdspu)
{
SpuState *state = &dvdspu->spu_state;
if (state->vobsub.buf) {
gst_buffer_unref (state->vobsub.buf);
state->vobsub.buf = NULL;
}
if (state->vobsub.pix_buf) {
gst_buffer_unref (state->vobsub.pix_buf);
state->vobsub.pix_buf = NULL;
}
state->vobsub.base_ts = GST_CLOCK_TIME_NONE;
state->vobsub.pix_data[0] = 0;
state->vobsub.pix_data[1] = 0;
state->vobsub.hl_rect.top = -1;
state->vobsub.hl_rect.bottom = -1;
state->vobsub.disp_rect.top = -1;
state->vobsub.disp_rect.bottom = -1;
state->vobsub.n_line_ctrl_i = 0;
if (state->vobsub.line_ctrl_i != NULL) {
g_free (state->vobsub.line_ctrl_i);
state->vobsub.line_ctrl_i = NULL;
}
}

89
gst/dvdspu/gstspu-vobsub.h
View file

@ -16,10 +16,95 @@
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GSTSPU_VOBSUB_H__
#define __GSTSPU_VOBSUB_H__
void gst_dvd_spu_handle_new_vobsub_buf (GstDVDSpu * dvdspu, SpuPacket * packet);
void gst_dvdspu_vobsub_execute_event (GstDVDSpu *dvdspu);
#include "gstspu-common.h"
typedef struct SpuVobsubState SpuVobsubState;
typedef struct SpuVobsubPixCtrlI SpuVobsubPixCtrlI;
typedef struct SpuVobsubLineCtrlI SpuVobsubLineCtrlI;
/* Pixel Control Info from a Change Color Contrast command */
struct SpuVobsubPixCtrlI {
gint16 left;
guint32 palette;
/* Pre-multiplied palette values, updated as
* needed */
SpuColour pal_cache[4];
};
struct SpuVobsubLineCtrlI {
guint8 n_changes; /* 1 to 8 */
SpuVobsubPixCtrlI pix_ctrl_i[8];
gint16 top;
gint16 bottom;
};
struct SpuVobsubState {
GstClockTime base_ts; /* base TS for cmd blk delays in running time */
GstBuffer *buf; /* Current SPU packet we're executing commands from */
guint16 cur_cmd_blk; /* Offset into the buf for the current cmd block */
/* Top + Bottom field offsets in the buffer. 0 = not set */
guint16 pix_data[2];
GstBuffer *pix_buf; /* Current SPU packet the pix_data references */
SpuRect disp_rect;
SpuRect clip_rect;
SpuRect hl_rect;
guint32 current_clut[16]; /* Colour lookup table from incoming events */
guint8 main_idx[4]; /* Indices for current main palette */
guint8 main_alpha[4]; /* Alpha values for main palette */
guint8 hl_idx[4]; /* Indices for current highlight palette */
guint8 hl_alpha[4]; /* Alpha values for highlight palette */
/* Pre-multiplied colour palette for the main palette */
SpuColour main_pal[4];
gboolean main_pal_dirty;
/* Line control info for rendering the highlight palette */
SpuVobsubLineCtrlI hl_ctrl_i;
gboolean hl_pal_dirty; /* Indicates that the HL palette info needs refreshing */
/* LineCtrlI Info from a Change Color & Contrast command */
SpuVobsubLineCtrlI *line_ctrl_i;
gint16 n_line_ctrl_i;
gboolean line_ctrl_i_pal_dirty; /* Indicates that the palettes for the line_ctrl_i
* need recalculating */
/* Rendering state vars below */
gint16 comp_last_x[2]; /* Maximum X values we rendered into the comp buffer (odd & even) */
gint16 *comp_last_x_ptr; /* Ptr to the current comp_last_x value to be updated by the render */
/* Current Y Position */
gint16 cur_Y;
/* Current offset in nibbles into the pix_data */
guint16 cur_offsets[2];
guint16 max_offset;
/* current ChgColCon Line Info */
SpuVobsubLineCtrlI *cur_chg_col;
SpuVobsubLineCtrlI *cur_chg_col_end;
/* Output position tracking */
guint8 *out_Y;
guint32 *out_U;
guint32 *out_V;
guint32 *out_A;
};
void gstspu_vobsub_handle_new_buf (GstDVDSpu * dvdspu, GstClockTime event_ts, GstBuffer *buf);
gboolean gstspu_vobsub_execute_event (GstDVDSpu *dvdspu);
void gstspu_vobsub_render (GstDVDSpu *dvdspu, GstBuffer *buf);
gboolean gstspu_vobsub_handle_dvd_event (GstDVDSpu *dvdspu, GstEvent *event);
void gstspu_vobsub_flush (GstDVDSpu *dvdspu);
#endif