mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-07-03 21:25:54 +00:00
dvdspu: Move a bunch of vobsub specific logic to a separate file.
Start separating out the vobsub logic in preparation for creating separate renderer objects for each subpicture format.
This commit is contained in:
Jan Schmidt
parent
e0e5975462
commit
7e20e3be45
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@ -1,13 +1,13 @@
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plugin_LTLIBRARIES = libgstdvdspu.la
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libgstdvdspu_la_SOURCES = gstdvdspu.c gstdvdspu-render.c gstspu-pgs.c
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libgstdvdspu_la_SOURCES = gstdvdspu.c gstdvdspu-render.c gstspu-vobsub.c gstspu-pgs.c
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libgstdvdspu_la_CFLAGS = $(GST_CFLAGS)
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libgstdvdspu_la_LIBADD = $(GST_LIBS)
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libgstdvdspu_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
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libgstdvdspu_la_LIBTOOLFLAGS = --tag=disable-static
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noinst_HEADERS = gstdvdspu.h gstspu-pgs.h
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noinst_HEADERS = gstdvdspu.h gstspu-pgs.h gstspu-vobsub.h
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EXTRA_DIST = Notes.txt
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@ -39,18 +39,14 @@
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#include <gst/gst.h>
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#include "gstdvdspu.h"
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#include "gstspu-vobsub.h"
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#include "gstspu-pgs.h"
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#define DUMP_DCSQ 0
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extern void gst_dvd_spu_render_spu (GstDVDSpu * dvdspu, GstBuffer * buf);
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GST_DEBUG_CATEGORY (dvdspu_debug);
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#define GST_CAT_DEFAULT dvdspu_debug
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/* Convert an STM offset in the SPU sequence to a GStreamer timestamp */
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#define STM_TO_GST(stm) ((GST_MSECOND * 1024 * (stm)) / 90)
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/* Filter signals and args */
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enum
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{
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@ -708,267 +704,6 @@ gst_dvd_spu_redraw_still (GstDVDSpu * dvdspu, gboolean force)
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}
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}
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static void
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gst_dvd_spu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
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{
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SpuState *state = &dvdspu->spu_state;
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guint8 *cur;
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gint16 n_entries;
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gint16 i;
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/* Clear any existing chg colcon info */
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state->n_line_ctrl_i = 0;
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if (state->line_ctrl_i != NULL) {
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g_free (state->line_ctrl_i);
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state->line_ctrl_i = NULL;
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}
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GST_DEBUG_OBJECT (dvdspu, "Change Color & Contrast. Pixel data = %d bytes",
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(gint16) (end - data));
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/* Count the number of entries we'll need */
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n_entries = 0;
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for (cur = data; cur < end;) {
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guint8 n_changes;
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guint32 code;
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if (cur + 4 > end)
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break;
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code = GST_READ_UINT32_BE (cur);
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if (code == 0x0fffffff)
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break; /* Termination code */
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n_changes = CLAMP ((cur[2] >> 4), 1, 8);
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cur += 4 + (6 * n_changes);
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if (cur > end)
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break; /* Invalid entry overrunning buffer */
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n_entries++;
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}
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state->n_line_ctrl_i = n_entries;
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state->line_ctrl_i = g_new (SpuLineCtrlI, n_entries);
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cur = data;
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for (i = 0; i < n_entries; i++) {
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SpuLineCtrlI *cur_line_ctrl = state->line_ctrl_i + i;
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guint8 n_changes = CLAMP ((cur[2] >> 4), 1, 8);
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guint8 c;
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cur_line_ctrl->n_changes = n_changes;
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cur_line_ctrl->top = ((cur[0] << 8) & 0x300) | cur[1];
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cur_line_ctrl->bottom = ((cur[2] << 8) & 0x300) | cur[3];
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GST_LOG_OBJECT (dvdspu, "ChgColcon Entry %d Top: %d Bottom: %d Changes: %d",
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i, cur_line_ctrl->top, cur_line_ctrl->bottom, n_changes);
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cur += 4;
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for (c = 0; c < n_changes; c++) {
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SpuPixCtrlI *cur_pix_ctrl = cur_line_ctrl->pix_ctrl_i + c;
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cur_pix_ctrl->left = ((cur[0] << 8) & 0x300) | cur[1];
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cur_pix_ctrl->palette = GST_READ_UINT32_BE (cur + 2);
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GST_LOG_OBJECT (dvdspu, " %d: left: %d palette 0x%x", c,
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cur_pix_ctrl->left, cur_pix_ctrl->palette);
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cur += 6;
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}
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}
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}
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static void
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gst_dvd_spu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
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{
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SpuState *state = &dvdspu->spu_state;
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while (data < end) {
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guint8 cmd;
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cmd = data[0];
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switch (cmd) {
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case SPU_CMD_FSTA_DSP:
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GST_DEBUG_OBJECT (dvdspu, " Forced Display");
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state->flags |= SPU_STATE_FORCED_DSP;
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data += 1;
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break;
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case SPU_CMD_DSP:
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GST_DEBUG_OBJECT (dvdspu, " Display On");
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state->flags |= SPU_STATE_DISPLAY;
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data += 1;
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break;
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case SPU_CMD_STP_DSP:
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GST_DEBUG_OBJECT (dvdspu, " Display Off");
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state->flags &= ~(SPU_STATE_FORCED_DSP | SPU_STATE_DISPLAY);
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data += 1;
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break;
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case SPU_CMD_SET_COLOR:{
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if (G_UNLIKELY (data + 3 >= end))
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return; /* Invalid SET_COLOR cmd at the end of the blk */
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state->main_idx[3] = data[1] >> 4;
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state->main_idx[2] = data[1] & 0x0f;
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state->main_idx[1] = data[2] >> 4;
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state->main_idx[0] = data[2] & 0x0f;
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state->main_pal_dirty = TRUE;
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GST_DEBUG_OBJECT (dvdspu,
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" Set Color bg %u pattern %u emph-1 %u emph-2 %u",
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state->main_idx[0], state->main_idx[1], state->main_idx[2],
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state->main_idx[3]);
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data += 3;
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break;
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}
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case SPU_CMD_SET_ALPHA:{
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if (G_UNLIKELY (data + 3 >= end))
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return; /* Invalid SET_ALPHA cmd at the end of the blk */
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state->main_alpha[3] = data[1] >> 4;
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state->main_alpha[2] = data[1] & 0x0f;
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state->main_alpha[1] = data[2] >> 4;
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state->main_alpha[0] = data[2] & 0x0f;
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state->main_pal_dirty = TRUE;
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GST_DEBUG_OBJECT (dvdspu,
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" Set Alpha bg %u pattern %u emph-1 %u emph-2 %u",
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state->main_alpha[0], state->main_alpha[1], state->main_alpha[2],
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state->main_alpha[3]);
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data += 3;
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break;
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}
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case SPU_CMD_SET_DAREA:{
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SpuRect *r = &state->disp_rect;
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if (G_UNLIKELY (data + 7 >= end))
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return; /* Invalid SET_DAREA cmd at the end of the blk */
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r->top = ((data[4] & 0x3f) << 4) | ((data[5] & 0xe0) >> 4);
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r->left = ((data[1] & 0x3f) << 4) | ((data[2] & 0xf0) >> 4);
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r->right = ((data[2] & 0x03) << 8) | data[3];
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r->bottom = ((data[5] & 0x03) << 8) | data[6];
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GST_DEBUG_OBJECT (dvdspu,
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" Set Display Area top %u left %u bottom %u right %u", r->top,
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r->left, r->bottom, r->right);
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data += 7;
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break;
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}
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case SPU_CMD_DSPXA:{
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if (G_UNLIKELY (data + 5 >= end))
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return; /* Invalid SET_DSPXE cmd at the end of the blk */
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state->pix_data[0] = GST_READ_UINT16_BE (data + 1);
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state->pix_data[1] = GST_READ_UINT16_BE (data + 3);
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/* Store a reference to the current command buffer, as that's where
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* we'll need to take our pixel data from */
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gst_buffer_replace (&state->pix_buf, state->buf);
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GST_DEBUG_OBJECT (dvdspu, " Set Pixel Data Offsets top: %u bot: %u",
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state->pix_data[0], state->pix_data[1]);
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data += 5;
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break;
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}
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case SPU_CMD_CHG_COLCON:{
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guint16 field_size;
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GST_DEBUG_OBJECT (dvdspu, " Set Color & Contrast Change");
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if (G_UNLIKELY (data + 3 >= end))
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return; /* Invalid CHG_COLCON cmd at the end of the blk */
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data++;
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field_size = GST_READ_UINT16_BE (data);
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if (G_UNLIKELY (data + field_size >= end))
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return; /* Invalid CHG_COLCON cmd at the end of the blk */
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gst_dvd_spu_parse_chg_colcon (dvdspu, data + 2, data + field_size);
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state->line_ctrl_i_pal_dirty = TRUE;
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data += field_size;
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break;
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}
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case SPU_CMD_END:
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default:
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GST_DEBUG_OBJECT (dvdspu, " END");
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data = end;
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break;
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}
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}
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}
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static void
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gst_dvd_spu_finish_spu_buf (GstDVDSpu * dvdspu)
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{
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SpuState *state = &dvdspu->spu_state;
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state->next_ts = state->base_ts = GST_CLOCK_TIME_NONE;
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gst_buffer_replace (&state->buf, NULL);
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GST_DEBUG_OBJECT (dvdspu, "Finished SPU buffer");
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}
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static gboolean
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gst_dvd_spu_setup_cmd_blk (GstDVDSpu * dvdspu, guint16 cmd_blk_offset,
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guint8 * start, guint8 * end)
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{
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SpuState *state = &dvdspu->spu_state;
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guint16 delay;
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guint8 *cmd_blk = start + cmd_blk_offset;
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if (G_UNLIKELY (cmd_blk + 5 >= end))
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return FALSE; /* No valid command block to read */
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delay = GST_READ_UINT16_BE (cmd_blk);
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state->next_ts = state->base_ts + STM_TO_GST (delay);
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state->cur_cmd_blk = cmd_blk_offset;
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GST_DEBUG_OBJECT (dvdspu, "Setup CMD Block @ %u with TS %" GST_TIME_FORMAT,
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state->cur_cmd_blk, GST_TIME_ARGS (state->next_ts));
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return TRUE;
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}
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static void
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gst_dvd_spu_handle_new_vobsub_buf (GstDVDSpu * dvdspu, SpuPacket * packet)
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{
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guint8 *start, *end;
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SpuState *state = &dvdspu->spu_state;
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#if DUMP_DCSQ
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gst_dvd_spu_dump_dcsq (dvdspu, packet->event_ts, packet->buf);
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#endif
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if (G_UNLIKELY (GST_BUFFER_SIZE (packet->buf) < 4))
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goto invalid;
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if (state->buf != NULL) {
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gst_buffer_unref (state->buf);
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state->buf = NULL;
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}
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state->buf = packet->buf;
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state->base_ts = packet->event_ts;
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start = GST_BUFFER_DATA (state->buf);
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end = start + GST_BUFFER_SIZE (state->buf);
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/* Configure the first command block in this buffer as our initial blk */
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state->cur_cmd_blk = GST_READ_UINT16_BE (start + 2);
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gst_dvd_spu_setup_cmd_blk (dvdspu, state->cur_cmd_blk, start, end);
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/* Clear existing chg-colcon info */
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state->n_line_ctrl_i = 0;
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if (state->line_ctrl_i != NULL) {
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g_free (state->line_ctrl_i);
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state->line_ctrl_i = NULL;
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}
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return;
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invalid:
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/* Invalid buffer */
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gst_dvd_spu_finish_spu_buf (dvdspu);
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}
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static void
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gst_dvd_spu_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event)
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{
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@ -1055,51 +790,6 @@ gst_dvd_spu_handle_dvd_event (GstDVDSpu * dvdspu, GstEvent * event)
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gst_event_unref (event);
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}
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#if DUMP_DCSQ
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static void
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gst_dvd_spu_dump_dcsq (GstDVDSpu * dvdspu,
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GstClockTime start_ts, GstBuffer * spu_buf)
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{
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guint16 cmd_blk_offset;
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guint16 next_blk;
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guint8 *start, *end;
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start = GST_BUFFER_DATA (spu_buf);
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end = start + GST_BUFFER_SIZE (spu_buf);
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g_return_if_fail (start != NULL);
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/* First command */
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next_blk = GST_READ_UINT16_BE (start + 2);
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cmd_blk_offset = 0;
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/* Loop through all commands */
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g_print ("SPU begins @ %" GST_TIME_FORMAT " offset %u\n",
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GST_TIME_ARGS (start_ts), next_blk);
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while (cmd_blk_offset != next_blk) {
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guint8 *data;
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GstClockTime cmd_blk_ts;
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cmd_blk_offset = next_blk;
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if (G_UNLIKELY (start + cmd_blk_offset + 5 >= end))
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break; /* No valid command to read */
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data = start + cmd_blk_offset;
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cmd_blk_ts = start_ts + STM_TO_GST (GST_READ_UINT16_BE (data));
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next_blk = GST_READ_UINT16_BE (data + 2);
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g_print ("Cmd Blk @ offset %u next %u ts %" GST_TIME_FORMAT "\n",
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cmd_blk_offset, next_blk, GST_TIME_ARGS (cmd_blk_ts));
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data += 4;
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gst_dvd_spu_exec_cmd_blk (dvdspu, data, end);
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}
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}
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#endif
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/* Advance the SPU packet/command queue to a time. new_ts is in running time */
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static void
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gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
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@ -1107,9 +797,6 @@ gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
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SpuState *state = &dvdspu->spu_state;
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while (state->next_ts == GST_CLOCK_TIME_NONE || state->next_ts <= new_ts) {
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guint8 *start, *cmd_blk, *end;
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guint16 next_blk;
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if (state->buf == NULL) {
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GstClockTime vid_run_ts;
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@ -1159,31 +846,7 @@ gst_dvd_spu_advance_spu (GstDVDSpu * dvdspu, GstClockTime new_ts)
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* next cmd */
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g_assert (state->buf != NULL);
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GST_DEBUG_OBJECT (dvdspu, "Executing cmd blk with TS %" GST_TIME_FORMAT
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" @ offset %u", GST_TIME_ARGS (state->next_ts), state->cur_cmd_blk);
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start = GST_BUFFER_DATA (state->buf);
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end = start + GST_BUFFER_SIZE (state->buf);
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cmd_blk = start + state->cur_cmd_blk;
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if (G_UNLIKELY (cmd_blk + 5 >= end)) {
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/* Invalid. Finish the buffer and loop again */
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gst_dvd_spu_finish_spu_buf (dvdspu);
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continue;
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}
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gst_dvd_spu_exec_cmd_blk (dvdspu, cmd_blk + 4, end);
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next_blk = GST_READ_UINT16_BE (cmd_blk + 2);
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if (next_blk != state->cur_cmd_blk) {
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/* Advance to the next block of commands */
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gst_dvd_spu_setup_cmd_blk (dvdspu, next_blk, start, end);
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} else {
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/* Next Block points to the current block, so we're finished with this
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* SPU buffer */
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gst_dvd_spu_finish_spu_buf (dvdspu);
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}
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gst_dvdspu_vobsub_execute_event (dvdspu);
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}
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}
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377
gst/dvdspu/gstspu-vobsub.c
Normal file
377
gst/dvdspu/gstspu-vobsub.c
Normal file
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@ -0,0 +1,377 @@
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/* GStreamer Sub-Picture Unit - VobSub/DVD handling
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* Copyright (C) 2009 Jan Schmidt <thaytan@noraisin.net>
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*
|
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* This library is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU Library General Public
|
||||
* License as published by the Free Software Foundation; either
|
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* version 2 of the License, or (at your option) any later version.
|
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*
|
||||
* 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,
|
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* Boston, MA 02111-1307, USA.
|
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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||||
#endif
|
||||
|
||||
#include <string.h>
|
||||
|
||||
#include <gst/gst.h>
|
||||
|
||||
#include "gstdvdspu.h"
|
||||
#include "gstspu-vobsub.h"
|
||||
|
||||
GST_DEBUG_CATEGORY_EXTERN (dvdspu_debug);
|
||||
#define GST_CAT_DEFAULT dvdspu_debug
|
||||
|
||||
/* Define to dump out a text description of the incoming SPU commands */
|
||||
#define DUMP_DCSQ 0
|
||||
|
||||
/* Convert an STM offset in the SPU sequence to a GStreamer timestamp */
|
||||
#define STM_TO_GST(stm) ((GST_MSECOND * 1024 * (stm)) / 90)
|
||||
|
||||
static void
|
||||
gst_dvd_spu_parse_chg_colcon (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
|
||||
{
|
||||
SpuState *state = &dvdspu->spu_state;
|
||||
guint8 *cur;
|
||||
gint16 n_entries;
|
||||
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;
|
||||
}
|
||||
GST_DEBUG_OBJECT (dvdspu, "Change Color & Contrast. Pixel data = %d bytes",
|
||||
(gint16) (end - data));
|
||||
|
||||
/* Count the number of entries we'll need */
|
||||
n_entries = 0;
|
||||
for (cur = data; cur < end;) {
|
||||
guint8 n_changes;
|
||||
guint32 code;
|
||||
|
||||
if (cur + 4 > end)
|
||||
break;
|
||||
|
||||
code = GST_READ_UINT32_BE (cur);
|
||||
if (code == 0x0fffffff)
|
||||
break; /* Termination code */
|
||||
|
||||
n_changes = CLAMP ((cur[2] >> 4), 1, 8);
|
||||
cur += 4 + (6 * n_changes);
|
||||
|
||||
if (cur > end)
|
||||
break; /* Invalid entry overrunning buffer */
|
||||
|
||||
n_entries++;
|
||||
}
|
||||
|
||||
state->n_line_ctrl_i = n_entries;
|
||||
state->line_ctrl_i = g_new (SpuLineCtrlI, n_entries);
|
||||
|
||||
cur = data;
|
||||
for (i = 0; i < n_entries; i++) {
|
||||
SpuLineCtrlI *cur_line_ctrl = state->line_ctrl_i + i;
|
||||
guint8 n_changes = CLAMP ((cur[2] >> 4), 1, 8);
|
||||
guint8 c;
|
||||
|
||||
cur_line_ctrl->n_changes = n_changes;
|
||||
cur_line_ctrl->top = ((cur[0] << 8) & 0x300) | cur[1];
|
||||
cur_line_ctrl->bottom = ((cur[2] << 8) & 0x300) | cur[3];
|
||||
|
||||
GST_LOG_OBJECT (dvdspu, "ChgColcon Entry %d Top: %d Bottom: %d Changes: %d",
|
||||
i, cur_line_ctrl->top, cur_line_ctrl->bottom, n_changes);
|
||||
cur += 4;
|
||||
|
||||
for (c = 0; c < n_changes; c++) {
|
||||
SpuPixCtrlI *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);
|
||||
GST_LOG_OBJECT (dvdspu, " %d: left: %d palette 0x%x", c,
|
||||
cur_pix_ctrl->left, cur_pix_ctrl->palette);
|
||||
cur += 6;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
gst_dvd_spu_exec_cmd_blk (GstDVDSpu * dvdspu, guint8 * data, guint8 * end)
|
||||
{
|
||||
SpuState *state = &dvdspu->spu_state;
|
||||
|
||||
while (data < end) {
|
||||
guint8 cmd;
|
||||
|
||||
cmd = data[0];
|
||||
|
||||
switch (cmd) {
|
||||
case SPU_CMD_FSTA_DSP:
|
||||
GST_DEBUG_OBJECT (dvdspu, " Forced Display");
|
||||
state->flags |= SPU_STATE_FORCED_DSP;
|
||||
data += 1;
|
||||
break;
|
||||
case SPU_CMD_DSP:
|
||||
GST_DEBUG_OBJECT (dvdspu, " Display On");
|
||||
state->flags |= SPU_STATE_DISPLAY;
|
||||
data += 1;
|
||||
break;
|
||||
case SPU_CMD_STP_DSP:
|
||||
GST_DEBUG_OBJECT (dvdspu, " Display Off");
|
||||
state->flags &= ~(SPU_STATE_FORCED_DSP | SPU_STATE_DISPLAY);
|
||||
data += 1;
|
||||
break;
|
||||
case SPU_CMD_SET_COLOR:{
|
||||
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->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]);
|
||||
data += 3;
|
||||
break;
|
||||
}
|
||||
case SPU_CMD_SET_ALPHA:{
|
||||
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->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]);
|
||||
data += 3;
|
||||
break;
|
||||
}
|
||||
case SPU_CMD_SET_DAREA:{
|
||||
SpuRect *r = &state->disp_rect;
|
||||
|
||||
if (G_UNLIKELY (data + 7 >= end))
|
||||
return; /* Invalid SET_DAREA cmd at the end of the blk */
|
||||
|
||||
r->top = ((data[4] & 0x3f) << 4) | ((data[5] & 0xe0) >> 4);
|
||||
r->left = ((data[1] & 0x3f) << 4) | ((data[2] & 0xf0) >> 4);
|
||||
r->right = ((data[2] & 0x03) << 8) | data[3];
|
||||
r->bottom = ((data[5] & 0x03) << 8) | data[6];
|
||||
|
||||
GST_DEBUG_OBJECT (dvdspu,
|
||||
" Set Display Area top %u left %u bottom %u right %u", r->top,
|
||||
r->left, r->bottom, r->right);
|
||||
|
||||
data += 7;
|
||||
break;
|
||||
}
|
||||
case SPU_CMD_DSPXA:{
|
||||
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
|
||||
* we'll need to take our pixel data from */
|
||||
gst_buffer_replace (&state->pix_buf, state->buf);
|
||||
|
||||
GST_DEBUG_OBJECT (dvdspu, " Set Pixel Data Offsets top: %u bot: %u",
|
||||
state->pix_data[0], state->pix_data[1]);
|
||||
|
||||
data += 5;
|
||||
break;
|
||||
}
|
||||
case SPU_CMD_CHG_COLCON:{
|
||||
guint16 field_size;
|
||||
|
||||
GST_DEBUG_OBJECT (dvdspu, " Set Color & Contrast Change");
|
||||
if (G_UNLIKELY (data + 3 >= end))
|
||||
return; /* Invalid CHG_COLCON cmd at the end of the blk */
|
||||
|
||||
data++;
|
||||
field_size = GST_READ_UINT16_BE (data);
|
||||
|
||||
if (G_UNLIKELY (data + field_size >= 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;
|
||||
data += field_size;
|
||||
break;
|
||||
}
|
||||
case SPU_CMD_END:
|
||||
default:
|
||||
GST_DEBUG_OBJECT (dvdspu, " END");
|
||||
data = end;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
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);
|
||||
|
||||
GST_DEBUG_OBJECT (dvdspu, "Finished SPU buffer");
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_dvd_spu_setup_cmd_blk (GstDVDSpu * dvdspu, guint16 cmd_blk_offset,
|
||||
guint8 * start, guint8 * end)
|
||||
{
|
||||
SpuState *state = &dvdspu->spu_state;
|
||||
guint16 delay;
|
||||
guint8 *cmd_blk = start + cmd_blk_offset;
|
||||
|
||||
if (G_UNLIKELY (cmd_blk + 5 >= end))
|
||||
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;
|
||||
|
||||
GST_DEBUG_OBJECT (dvdspu, "Setup CMD Block @ %u with TS %" GST_TIME_FORMAT,
|
||||
state->cur_cmd_blk, GST_TIME_ARGS (state->next_ts));
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
#if DUMP_DCSQ
|
||||
static void
|
||||
gst_dvd_spu_dump_dcsq (GstDVDSpu * dvdspu,
|
||||
GstClockTime start_ts, GstBuffer * spu_buf)
|
||||
{
|
||||
guint16 cmd_blk_offset;
|
||||
guint16 next_blk;
|
||||
guint8 *start, *end;
|
||||
|
||||
start = GST_BUFFER_DATA (spu_buf);
|
||||
end = start + GST_BUFFER_SIZE (spu_buf);
|
||||
|
||||
g_return_if_fail (start != NULL);
|
||||
|
||||
/* First command */
|
||||
next_blk = GST_READ_UINT16_BE (start + 2);
|
||||
cmd_blk_offset = 0;
|
||||
|
||||
/* Loop through all commands */
|
||||
g_print ("SPU begins @ %" GST_TIME_FORMAT " offset %u\n",
|
||||
GST_TIME_ARGS (start_ts), next_blk);
|
||||
|
||||
while (cmd_blk_offset != next_blk) {
|
||||
guint8 *data;
|
||||
GstClockTime cmd_blk_ts;
|
||||
|
||||
cmd_blk_offset = next_blk;
|
||||
|
||||
if (G_UNLIKELY (start + cmd_blk_offset + 5 >= end))
|
||||
break; /* No valid command to read */
|
||||
|
||||
data = start + cmd_blk_offset;
|
||||
|
||||
cmd_blk_ts = start_ts + STM_TO_GST (GST_READ_UINT16_BE (data));
|
||||
next_blk = GST_READ_UINT16_BE (data + 2);
|
||||
|
||||
g_print ("Cmd Blk @ offset %u next %u ts %" GST_TIME_FORMAT "\n",
|
||||
cmd_blk_offset, next_blk, GST_TIME_ARGS (cmd_blk_ts));
|
||||
|
||||
data += 4;
|
||||
gst_dvd_spu_exec_cmd_blk (dvdspu, data, end);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
void
|
||||
gst_dvd_spu_handle_new_vobsub_buf (GstDVDSpu * dvdspu, SpuPacket * packet)
|
||||
{
|
||||
guint8 *start, *end;
|
||||
SpuState *state = &dvdspu->spu_state;
|
||||
|
||||
#if DUMP_DCSQ
|
||||
gst_dvd_spu_dump_dcsq (dvdspu, packet->event_ts, packet->buf);
|
||||
#endif
|
||||
|
||||
if (G_UNLIKELY (GST_BUFFER_SIZE (packet->buf) < 4))
|
||||
goto invalid;
|
||||
|
||||
if (state->buf != NULL) {
|
||||
gst_buffer_unref (state->buf);
|
||||
state->buf = NULL;
|
||||
}
|
||||
state->buf = packet->buf;
|
||||
state->base_ts = packet->event_ts;
|
||||
|
||||
start = GST_BUFFER_DATA (state->buf);
|
||||
end = start + GST_BUFFER_SIZE (state->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);
|
||||
/* 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;
|
||||
}
|
||||
return;
|
||||
|
||||
invalid:
|
||||
/* Invalid buffer */
|
||||
gst_dvd_spu_finish_spu_buf (dvdspu);
|
||||
}
|
||||
|
||||
void
|
||||
gst_dvdspu_vobsub_execute_event (GstDVDSpu * dvdspu)
|
||||
{
|
||||
guint8 *start, *cmd_blk, *end;
|
||||
guint16 next_blk;
|
||||
SpuState *state = &dvdspu->spu_state;
|
||||
|
||||
GST_DEBUG_OBJECT (dvdspu, "Executing cmd blk with TS %" GST_TIME_FORMAT
|
||||
" @ offset %u", GST_TIME_ARGS (state->next_ts), state->cur_cmd_blk);
|
||||
|
||||
start = GST_BUFFER_DATA (state->buf);
|
||||
end = start + GST_BUFFER_SIZE (state->buf);
|
||||
|
||||
cmd_blk = start + state->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;
|
||||
}
|
||||
|
||||
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) {
|
||||
/* 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);
|
||||
}
|
||||
}
|
||||
25
gst/dvdspu/gstspu-vobsub.h
Normal file
25
gst/dvdspu/gstspu-vobsub.h
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
/* GStreamer Sub-Picture Unit - VobSub/DVD handling
|
||||
* 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.
|
||||
*/
|
||||
#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);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue