diff options
Diffstat (limited to 'src/input/libdvdnav/dvdnav.c')
| -rw-r--r-- | src/input/libdvdnav/dvdnav.c | 1136 |
1 files changed, 1136 insertions, 0 deletions
diff --git a/src/input/libdvdnav/dvdnav.c b/src/input/libdvdnav/dvdnav.c new file mode 100644 index 000000000..63282db69 --- /dev/null +++ b/src/input/libdvdnav/dvdnav.c @@ -0,0 +1,1136 @@ +/* + * Copyright (C) 2000 Rich Wareham <richwareham@users.sourceforge.net> + * + * This file is part of libdvdnav, a DVD navigation library. + * + * libdvdnav is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * libdvdnav 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA + * + * $Id: dvdnav.c,v 1.1 2002/08/08 17:49:21 richwareham Exp $ + * + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +/* +#define LOG_DEBUG +*/ + +#include <pthread.h> +#include <dvdnav.h> +#include "dvdnav_internal.h" +#include "read_cache.h" + +#include <dvdread/nav_read.h> + +#include <stdlib.h> +#include <stdio.h> + +/* + * NOTE: + * All NLCK_*() function are not mutex locked, this made them reusable in + * a locked context. Take care. + * + */ + +/* Current domain (backend to dvdnav_is_domain_() funcs) */ +static int8_t NLCK_dvdnav_is_domain(dvdnav_t *this, domain_t domain) { + dvd_state_t *state; + + if((!this) || (!this->started) || (!this->vm)) + return -1; + + state = &(this->vm->state); + + if(!state) + return -1; + + return (state->domain == domain) ? 1 : 0; +} + +static int8_t _dvdnav_is_domain(dvdnav_t *this, domain_t domain) { + int8_t retval; + + pthread_mutex_lock(&this->vm_lock); + retval = NLCK_dvdnav_is_domain(this, domain); + pthread_mutex_unlock(&this->vm_lock); + + return retval; +} + +static int8_t NCLK_dvdnav_get_audio_logical_stream(dvdnav_t *this, uint8_t audio_num) { + dvd_state_t *state; + int8_t logical = -1; + + if(!NLCK_dvdnav_is_domain(this, VTS_DOMAIN)) + audio_num = 0; + + state = &(this->vm->state); + + if(audio_num < 8) { + if(state->pgc->audio_control[audio_num] & (1 << 15)) { + logical = (state->pgc->audio_control[audio_num] >> 8) & 0x07; + } + } + + return logical; +} + +static int8_t NCLK_dvdnav_get_spu_logical_stream(dvdnav_t *this, uint8_t subp_num) { + dvd_state_t *state; + ifo_handle_t *vtsi; + + if(!this) + return -1; + + state = &(this->vm->state); + vtsi = this->vm->vtsi; + + if(subp_num >= vtsi->vtsi_mat->nr_of_vts_subp_streams) + return -1; + + return vm_get_subp_stream(this->vm, subp_num, 0); +} + +static int8_t NLCK_dvdnav_get_active_spu_stream(dvdnav_t *this) { + dvd_state_t *state; + int8_t subp_num; + int stream_num; + + state = &(this->vm->state); + subp_num = state->SPST_REG & ~0x40; + stream_num = NCLK_dvdnav_get_spu_logical_stream(this, subp_num); + + if(stream_num == -1) + for(subp_num = 0; subp_num < 32; subp_num++) + if(state->pgc->subp_control[subp_num] & (1 << 31)) { + stream_num = NCLK_dvdnav_get_spu_logical_stream(this, subp_num); + break; + } + + return stream_num; +} + +uint8_t dvdnav_get_video_aspect(dvdnav_t *this) { + uint8_t retval; + + pthread_mutex_lock(&this->vm_lock); + retval = (uint8_t) vm_get_video_aspect(this->vm); + pthread_mutex_unlock(&this->vm_lock); + + return retval; +} + +uint8_t dvdnav_get_video_scale_permission(dvdnav_t *this) { + uint8_t retval; + + pthread_mutex_lock(&this->vm_lock); + retval = (uint8_t) vm_get_video_scale_permission(this->vm); + pthread_mutex_unlock(&this->vm_lock); + + return retval; +} + +dvdnav_status_t dvdnav_clear(dvdnav_t * this) { + if (!this) { + printerr("Passed a NULL pointer"); + return S_ERR; + } + /* clear everything except path, file, vm, mutex, readahead */ + + /* path */ + if (this->file) DVDCloseFile(this->file); + this->file = NULL; + this->open_vtsN = -1; + this->open_domain = -1; + + memset(&this->pci,0,sizeof(this->pci)); + memset(&this->dsi,0,sizeof(this->dsi)); + + /* Set initial values of flags */ + this->position_current.still = 0; + this->skip_still = 0; + this->stop = 0; + this->spu_clut_changed = 0; + this->started=0; + /* this->use_read_ahead */ + + dvdnav_read_cache_clear(this->cache); + + return S_OK; +} + +dvdnav_status_t dvdnav_open(dvdnav_t** dest, char *path) { + dvdnav_t *this; + + /* Create a new structure */ + (*dest) = NULL; + this = (dvdnav_t*)malloc(sizeof(dvdnav_t)); + if(!this) + return S_ERR; + memset(this, 0, (sizeof(dvdnav_t) ) ); /* Make sure this structure is clean */ + + pthread_mutex_init(&this->vm_lock, NULL); + /* Initialise the error string */ + printerr(""); + + /* Initialise the VM */ + this->vm = vm_new_vm(); + if(!this->vm) { + printerr("Error initialising the DVD VM"); + return S_ERR; + } + if(vm_reset(this->vm, path) == -1) { + printerr("Error starting the VM / opening the DVD device"); + return S_ERR; + } + + /* Set the path. FIXME: Is a deep copy 'right' */ + strncpy(this->path, path, MAX_PATH_LEN); + + dvdnav_clear(this); + + /* Pre-open and close a file so that the CSS-keys are cached. */ + this->file = DVDOpenFile(vm_get_dvd_reader(this->vm), 0, DVD_READ_MENU_VOBS); + if (this->file) DVDCloseFile(this->file); + this->file = NULL; + + //if(!this->started) { + // /* Start the VM */ + // vm_start(this->vm); + // this->started = 1; + //} + + /* Start the read-ahead cache. */ + this->cache = dvdnav_read_cache_new(this); + + (*dest) = this; + return S_OK; +} + +dvdnav_status_t dvdnav_close(dvdnav_t *this) { + if(!this) { + printerr("Passed a NULL pointer"); + return S_ERR; + } +#ifdef LOG_DEBUG + fprintf(stderr,"dvdnav:close:called\n"); +#endif + + if (this->file) { + DVDCloseFile(this->file); +#ifdef LOG_DEBUG + fprintf(stderr,"dvdnav:close:file closing\n"); +#endif + this->file = NULL; + } + + /* Free the VM */ + if(this->vm) { + vm_free_vm(this->vm); + } + if (this->file) { + DVDCloseFile(this->file); +#ifdef LOG_DEBUG + fprintf(stderr,"dvdnav:close2:file closing\n"); +#endif + this->file = NULL; + } + pthread_mutex_destroy(&this->vm_lock); + + /* We leave the final freeing of the entire structure to the cache, + * because we don't know, if there are still buffers out in the wild, + * that must return first. */ + if(this->cache) { + dvdnav_read_cache_free(this->cache); + } else free(this); + + return S_OK; +} + +dvdnav_status_t dvdnav_reset(dvdnav_t *this) { + dvdnav_status_t result; + +#ifdef LOG_DEBUG + printf("dvdnav:reset:called\n"); +#endif + if(!this) { + printerr("Passed a NULL pointer"); + return S_ERR; + } +#ifdef LOG_DEBUG + printf("getting lock\n"); +#endif + pthread_mutex_lock(&this->vm_lock); +#ifdef LOG_DEBUG + printf("reseting vm\n"); +#endif + if(vm_reset(this->vm, NULL) == -1) { + printerr("Error restarting the VM"); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } +#ifdef LOG_DEBUG + printf("clearing dvdnav\n"); +#endif + result=dvdnav_clear(this); +#ifdef LOG_DEBUG + printf("starting vm\n"); +#endif +// if(!this->started) { +// /* Start the VM */ +// vm_start(this->vm); +// this->started = 1; +// } +#ifdef LOG_DEBUG + printf("unlocking\n"); +#endif + pthread_mutex_unlock(&this->vm_lock); + return result; +} + +dvdnav_status_t dvdnav_path(dvdnav_t *this, char** path) { + if(!this || !path || !(*path)) { + return S_ERR; + } + + /* FIXME: Is shallow copy 'right'? */ + (*path) = this->path; + + return S_OK; +} + +char* dvdnav_err_to_string(dvdnav_t *this) { + if(!this) { + /* Shold this be "passed a NULL pointer?" */ + return "Hey! You gave me a NULL pointer you naughty person!"; + } + + return this->err_str; +} + +/** + * Returns 1 if block contains NAV packet, 0 otherwise. + * Precesses said NAV packet if present. + * + * Most of the code in here is copied from xine's MPEG demuxer + * so any bugs which are found in that should be corrected here also. + */ +int dvdnav_decode_packet(dvdnav_t *this, uint8_t *p, dsi_t* nav_dsi, pci_t* nav_pci) { + int bMpeg1=0; + uint32_t nHeaderLen; + uint32_t nPacketLen; + uint32_t nStreamID; +/* uint8_t *p_start=p; */ + + + if (p==NULL) { + fprintf(stderr,"Passed a NULL pointer.\n"); + return 0; + } + + /* dprint("Checking packet...\n"); */ + + if (p[3] == 0xBA) { /* program stream pack header */ + + int nStuffingBytes; + + /* xprintf (VERBOSE|DEMUX, "program stream pack header\n"); */ + + bMpeg1 = (p[4] & 0x40) == 0; + + if (bMpeg1) { + p += 12; + } else { /* mpeg2 */ + nStuffingBytes = p[0xD] & 0x07; + p += 14 + nStuffingBytes; + } + } + + + if (p[3] == 0xbb) { /* program stream system header */ + int nHeaderLen; + + nHeaderLen = (p[4] << 8) | p[5]; + p += 6 + nHeaderLen; + } + + /* we should now have a PES packet here */ + + if (p[0] || p[1] || (p[2] != 1)) { + fprintf(stderr,"demux error! %02x %02x %02x (should be 0x000001) \n",p[0],p[1],p[2]); + return 0; + } + + nPacketLen = p[4] << 8 | p[5]; + nStreamID = p[3]; + + nHeaderLen = 6; + p += nHeaderLen; + + if (nStreamID == 0xbf) { /* Private stream 2 */ +/* + * int i; + * printf("dvdnav:nav packet=%u\n",p-p_start-6); + * for(i=0;i<80;i++) { + * printf("%02x ",p[i-6]); + * } + * printf("\n"); + */ + if(p[0] == 0x00) { + navRead_PCI(nav_pci, p+1); + } + + p += nPacketLen; + + /* We should now have a DSI packet. */ + if(p[6] == 0x01) { + nPacketLen = p[4] << 8 | p[5]; + p += 6; + /* dprint("NAV DSI packet\n"); */ + navRead_DSI(nav_dsi, p+1); + + } + return 1; + } + return 0; +} + +/* DSI is used for most angle stuff. + * PCI is used for only non-seemless angle stuff + */ +int dvdnav_get_vobu(dvdnav_t *self, dsi_t* nav_dsi, pci_t* nav_pci, dvdnav_vobu_t* vobu) { + uint32_t next; + int angle, num_angle; + + vobu->vobu_start = nav_dsi->dsi_gi.nv_pck_lbn; /* Absolute offset from start of disk */ + vobu->vobu_length = nav_dsi->dsi_gi.vobu_ea; /* Relative offset from vobu_start */ + + /* + * If we're not at the end of this cell, we can determine the next + * VOBU to display using the VOBU_SRI information section of the + * DSI. Using this value correctly follows the current angle, + * avoiding the doubled scenes in The Matrix, and makes our life + * really happy. + * + * vobu_next is an offset value, 0x3fffffff = SRI_END_OF_CELL + * DVDs are about 6 Gigs, which is only up to 0x300000 blocks + * Should really assert if bit 31 != 1 + */ + + /* Relative offset from vobu_start */ + vobu->vobu_next = ( nav_dsi->vobu_sri.next_vobu & 0x3fffffff ); + + /* Old code -- may still be sueful one day + if(nav_dsi->vobu_sri.next_vobu != SRI_END_OF_CELL ) { + vobu->vobu_next = ( nav_dsi->vobu_sri.next_vobu & 0x3fffffff ); + } else { + vobu->vobu_next = vobu->vobu_length; + } */ + + dvdnav_get_angle_info(self, &angle, &num_angle); +#if 0 + /* FIMXE: The angle reset doesn't work for some reason for the moment */ + + if((num_angle < angle) && (angle != 1)) { + printf("OOOOOOO angle ends!\n"); + + /* This is to switch back to angle one when we + * finish with angles. */ + dvdnav_angle_change(self, 1); + } +#endif + + if(num_angle != 0) { + next = nav_pci->nsml_agli.nsml_agl_dsta[angle-1]; + + if(next != 0) { + if((next & 0x3fffffff) != 0) { + if(next & 0x80000000) { + vobu->vobu_next = - (int32_t)(next & 0x3fffffff); + } else { + vobu->vobu_next = + (int32_t)(next & 0x3fffffff); + } + } + + } else if( nav_dsi->sml_agli.data[angle-1].address != 0 ) { + next = nav_dsi->sml_agli.data[angle-1].address; + vobu->vobu_length = nav_dsi->sml_pbi.ilvu_ea; + + if((next & 0x80000000) && (next != 0x7fffffff)) { + vobu->vobu_next = - (int32_t)(next & 0x3fffffff); + } else { + vobu->vobu_next = + (int32_t)(next & 0x3fffffff); + } + } + } + + return 1; +} + +/* This is the main get_next_block function which actually gets the media stream video and audio etc. + * The use of this function is optional, with the application programmer + * free to implement their own version of this function + * FIXME: Make the function calls from here public API calls. + */ + +dvdnav_status_t dvdnav_get_next_block(dvdnav_t *this, unsigned char *buf, + int *event, int *len) { + unsigned char *block; + dvdnav_status_t status; + + block = buf; + status = dvdnav_get_next_cache_block(this, &block, event, len); + if (block != buf) { + /* we received a block from the cache, copy it, so we can give it back */ + memcpy(buf, block, DVD_VIDEO_LB_LEN); + dvdnav_free_cache_block(this, block); + } + return status; +} + +dvdnav_status_t dvdnav_get_next_cache_block(dvdnav_t *this, unsigned char **buf, + int *event, int *len) { + dvd_state_t *state; + int result; + if(!this || !event || !len || !buf || !*buf) { + printerr("Passed a NULL pointer"); + return S_ERR; + } + pthread_mutex_lock(&this->vm_lock); + + if(!this->started) { + /* Start the VM */ + vm_start(this->vm); + this->started = 1; + } + + state = &(this->vm->state); + (*event) = DVDNAV_NOP; + (*len) = 0; + + /* Check the STOP flag */ + if(this->stop) { + (*event) = DVDNAV_STOP; + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + /* Check the STILLFRAME flag */ + /* FIXME: Still cell, not still frame */ + if(this->position_current.still != 0) { + dvdnav_still_event_t still_event; + + still_event.length = this->position_current.still; + + (*event) = DVDNAV_STILL_FRAME; + (*len) = sizeof(dvdnav_still_event_t); + memcpy(*buf, &(still_event), sizeof(dvdnav_still_event_t)); + + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + vm_position_get(this->vm,&this->position_next); + /********** + fprintf(stderr, "POS-NEXT "); + vm_position_print(this->vm, &this->position_next); + fprintf(stderr, "POS-CUR "); + vm_position_print(this->vm, &this->position_current); + **********/ + + if(this->position_current.hop_channel != this->position_next.hop_channel) { + this->position_current.hop_channel = this->position_next.hop_channel; + (*event) = DVDNAV_HOP_CHANNEL; + (*len) = 0; + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + + + if(this->spu_clut_changed) { + (*event) = DVDNAV_SPU_CLUT_CHANGE; +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:SPU_CLUT_CHANGE\n"); +#endif + (*len) = sizeof(dvdnav_still_event_t); + memcpy(*buf, &(state->pgc->palette), 16 * sizeof(uint32_t)); + this->spu_clut_changed = 0; +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:SPU_CLUT_CHANGE returning S_OK\n"); +#endif + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + if(this->position_current.spu_channel != this->position_next.spu_channel) { + dvdnav_spu_stream_change_event_t stream_change; + (*event) = DVDNAV_SPU_STREAM_CHANGE; +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:SPU_STREAM_CHANGE\n"); +#endif + (*len) = sizeof(dvdnav_spu_stream_change_event_t); + stream_change.physical_wide = vm_get_subp_active_stream(this->vm, 0); + stream_change.physical_letterbox = vm_get_subp_active_stream(this->vm, 1); + stream_change.physical_pan_scan = vm_get_subp_active_stream(this->vm, 2); + memcpy(*buf, &(stream_change), sizeof( dvdnav_spu_stream_change_event_t)); + this->position_current.spu_channel = this->position_next.spu_channel; +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:SPU_STREAM_CHANGE stream_id_wide=%d\n",stream_change.physical_wide); + fprintf(stderr,"libdvdnav:SPU_STREAM_CHANGE stream_id_letterbox=%d\n",stream_change.physical_letterbox); + fprintf(stderr,"libdvdnav:SPU_STREAM_CHANGE stream_id_pan_scan=%d\n",stream_change.physical_pan_scan); +#endif + pthread_mutex_unlock(&this->vm_lock); + if (stream_change.physical_wide != -1 && + stream_change.physical_letterbox != -1 && + stream_change.physical_pan_scan != -1) { +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:SPU_STREAM_CHANGE returning S_OK\n"); +#endif + return S_OK; + } + } + + if(this->position_current.audio_channel != this->position_next.audio_channel) { + dvdnav_audio_stream_change_event_t stream_change; + (*event) = DVDNAV_AUDIO_STREAM_CHANGE; +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:AUDIO_STREAM_CHANGE\n"); +#endif + (*len) = sizeof(dvdnav_audio_stream_change_event_t); + stream_change.physical= vm_get_audio_active_stream( this->vm ); + memcpy(*buf, &(stream_change), sizeof( dvdnav_audio_stream_change_event_t)); + this->position_current.audio_channel = this->position_next.audio_channel; +#ifdef LOG_DEBUG + fprintf(stderr,"libdvdnav:AUDIO_STREAM_CHANGE stream_id=%d returning S_OK\n",stream_change.physical); +#endif + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + /* Check the HIGHLIGHT flag */ + /* FIXME: Use BUTTON instead of HIGHLIGHT. */ + if(this->position_current.button != this->position_next.button) { + dvdnav_highlight_event_t hevent; + + hevent.display = 1; + hevent.buttonN = this->position_next.button; + + this->position_current.button = this->position_next.button; + + (*event) = DVDNAV_HIGHLIGHT; + (*len) = sizeof(hevent); + memcpy(*buf, &(hevent), sizeof(hevent)); + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + /* Check to see if we need to change the currently opened VOB */ + if((this->position_current.vts != this->position_next.vts) || + (this->position_current.domain != this->position_next.domain)) { + dvd_read_domain_t domain; + int vtsN; + dvdnav_vts_change_event_t vts_event; + + if(this->file) { + dvdnav_read_cache_clear(this->cache); + DVDCloseFile(this->file); + this->file = NULL; + } + + vts_event.old_vtsN = this->open_vtsN; + vts_event.old_domain = this->open_domain; + + /* Use the current DOMAIN to find whether to open menu or title VOBs */ + switch(this->position_next.domain) { + case FP_DOMAIN: + case VMGM_DOMAIN: + domain = DVD_READ_MENU_VOBS; + vtsN = 0; + break; + case VTSM_DOMAIN: + domain = DVD_READ_MENU_VOBS; + vtsN = this->position_next.vts; + break; + case VTS_DOMAIN: + domain = DVD_READ_TITLE_VOBS; + vtsN = this->position_next.vts; + break; + default: + printerr("Unknown domain when changing VTS."); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } + + this->position_current.vts = this->position_next.vts; + this->position_current.domain = this->position_next.domain; + dvdnav_read_cache_clear(this->cache); + this->file = DVDOpenFile(vm_get_dvd_reader(this->vm), vtsN, domain); + vts_event.new_vtsN = this->position_next.vts; + vts_event.new_domain = this->position_next.domain; + + /* If couldn't open the file for some reason, moan */ + if(this->file == NULL) { + printerrf("Error opening vtsN=%i, domain=%i.", vtsN, domain); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } + + /* File opened successfully so return a VTS change event */ + (*event) = DVDNAV_VTS_CHANGE; + memcpy(*buf, &(vts_event), sizeof(vts_event)); + (*len) = sizeof(vts_event); + + /* On a VTS change, we want to disable any highlights which + * may have been shown (FIXME: is this valid?) */ + this->spu_clut_changed = 1; + this->position_current.cell = -1; /* Force an update */ + this->position_current.spu_channel = -1; /* Force an update */ + this->position_current.audio_channel = -1; /* Force an update */; + + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + /* FIXME: Don't really need "cell", we only need vobu_start */ + if( (this->position_current.cell != this->position_next.cell) || + (this->position_current.cell_restart != this->position_next.cell_restart) || + (this->position_current.vobu_start != this->position_next.vobu_start) || + (this->position_current.vobu_next != this->position_next.vobu_next) ) { + this->position_current.cell = this->position_next.cell; + this->position_current.cell_restart = this->position_next.cell_restart; + /* vobu_start changes when PGC or PG changes. */ + this->position_current.vobu_start = this->position_next.vobu_start; + this->position_current.vobu_next = this->position_next.vobu_next; + /* FIXME: Need to set vobu_start, vobu_next */ + this->vobu.vobu_start = this->position_next.vobu_start; + /* vobu_next is use for mid cell resumes */ + this->vobu.vobu_next = this->position_next.vobu_next; + this->vobu.vobu_length = 0; + this->vobu.blockN = this->vobu.vobu_length + 1; + /* Make blockN > vobu_lenght to do expected_nav */ + (*event) = DVDNAV_CELL_CHANGE; + (*len) = 0; + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + + if (this->vobu.blockN > this->vobu.vobu_length) { + /* End of VOBU */ + + if(this->vobu.vobu_next == SRI_END_OF_CELL) { + /* End of Cell from NAV DSI info */ +#ifdef LOG_DEBUG + fprintf(stderr, "Still set to %x\n", this->position_next.still); +#endif + this->position_current.still = this->position_next.still; + + if( this->position_current.still == 0 || this->skip_still ) { + vm_get_next_cell(this->vm); + vm_position_get(this->vm,&this->position_next); + /* FIXME: Need to set vobu_start, vobu_next */ + this->position_current.still = 0; /* still gets activated at end of cell */ + this->skip_still = 0; + this->position_current.cell = this->position_next.cell; + this->position_current.vobu_start = this->position_next.vobu_start; + this->position_current.vobu_next = this->position_next.vobu_next; + this->vobu.vobu_start = this->position_next.vobu_start; + /* vobu_next is use for mid cell resumes */ + this->vobu.vobu_next = this->position_next.vobu_next; + this->vobu.vobu_length = 0; + this->vobu.blockN = this->vobu.vobu_length + 1; + /* Make blockN > vobu_next to do expected_nav */ + (*event) = DVDNAV_CELL_CHANGE; + (*len) = 0; + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } else { + dvdnav_still_event_t still_event; + still_event.length = this->position_current.still; + (*event) = DVDNAV_STILL_FRAME; + (*len) = sizeof(dvdnav_still_event_t); + memcpy(*buf, &(still_event), sizeof(dvdnav_still_event_t)); + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + /* Only set still after whole VOBU has been output. */ + /* + if(this->position_next.still != 0) { + this->position_current.still = this->position_next.still; + } + */ + + } + /* Perform the jump if necessary (this is always a + * VOBU boundary). */ + + //result = DVDReadBlocks(this->file, this->vobu.vobu_start + this->vobu.vobu_next, 1, buf); + result = dvdnav_read_cache_block(this->cache, this->vobu.vobu_start + this->vobu.vobu_next, 1, buf); + + if(result <= 0) { + printerr("Error reading NAV packet."); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } + /* Decode nav into pci and dsi. */ + /* Then get next VOBU info. */ + if(dvdnav_decode_packet(this, *buf, &this->dsi, &this->pci) == 0) { + printerr("Expected NAV packet but none found."); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } + dvdnav_get_vobu(this, &this->dsi,&this->pci, &this->vobu); + this->vobu.blockN=1; + /* FIXME: We need to update the vm state->blockN with which VOBU we are in. + * This is so RSM resumes to the VOBU level and not just the CELL level. + * This should be implemented with a new Public API call. + */ + /* We cache one past the end of the VOBU, + * in the hope it might catch the next NAV packet as well. + * This reduces the amount of read commands sent to the DVD device. + * A cache miss will only happen for 3 reasons. + * 1) Seeking + * 2) Menu change + * 3) The next VOBU does not immeadiately follow the current one. E.g. Multi Angles, ILVU. + */ + dvdnav_pre_cache_blocks(this->cache, this->vobu.vobu_start+1, this->vobu.vobu_length+1); + + /* Successfully got a NAV packet */ + (*event) = DVDNAV_NAV_PACKET; + (*len) = 2048; + pthread_mutex_unlock(&this->vm_lock); + return S_OK; + } + + /* If we've got here, it must just be a normal block. */ + if(!this->file) { + printerr("Attempting to read without opening file"); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } + + result = dvdnav_read_cache_block(this->cache, this->vobu.vobu_start + this->vobu.blockN, 1, buf); + if(result <= 0) { + printerr("Error reading from DVD."); + pthread_mutex_unlock(&this->vm_lock); + return S_ERR; + } + this->vobu.blockN++; + (*len) = 2048; + (*event) = DVDNAV_BLOCK_OK; + + pthread_mutex_unlock(&this->vm_lock); + return S_OK; +} + +uint16_t dvdnav_audio_stream_to_lang(dvdnav_t *this, uint8_t stream) { + audio_attr_t attr; + + if(!this) + return -1; + + pthread_mutex_lock(&this->vm_lock); + attr = vm_get_audio_attr(this->vm, stream); + pthread_mutex_unlock(&this->vm_lock); + + if(attr.lang_type != 1) + return 0xffff; + + return attr.lang_code; +} + +int8_t dvdnav_get_audio_logical_stream(dvdnav_t *this, uint8_t audio_num) { + int8_t retval; + + if(!this) + return -1; + + pthread_mutex_lock(&this->vm_lock); + retval = NCLK_dvdnav_get_audio_logical_stream(this, audio_num); + pthread_mutex_unlock(&this->vm_lock); + + return retval; +} + +uint16_t dvdnav_spu_stream_to_lang(dvdnav_t *this, uint8_t stream) { + subp_attr_t attr; + + if(!this) + return -1; + + pthread_mutex_lock(&this->vm_lock); + attr = vm_get_subp_attr(this->vm, stream); + pthread_mutex_unlock(&this->vm_lock); + + if(attr.type != 1) + return 0xffff; + + return attr.lang_code; +} + +int8_t dvdnav_get_spu_logical_stream(dvdnav_t *this, uint8_t subp_num) { + int8_t retval; + + if(!this) + return -1; + + pthread_mutex_lock(&this->vm_lock); + retval = NCLK_dvdnav_get_spu_logical_stream(this, subp_num); + pthread_mutex_unlock(&this->vm_lock); + + return retval; +} + +int8_t dvdnav_get_active_spu_stream(dvdnav_t *this) { + int8_t retval; + + if(!this) + return -1; + + pthread_mutex_lock(&this->vm_lock); + retval = NLCK_dvdnav_get_active_spu_stream(this); + pthread_mutex_unlock(&this->vm_lock); + + return retval; +} + +/* First Play domain. (Menu) */ +int8_t dvdnav_is_domain_fp(dvdnav_t *this) { + return _dvdnav_is_domain(this, FP_DOMAIN); +} +/* Video management Menu domain. (Menu) */ +int8_t dvdnav_is_domain_vmgm(dvdnav_t *this) { + return _dvdnav_is_domain(this, VMGM_DOMAIN); +} +/* Video Title Menu domain (Menu) */ +int8_t dvdnav_is_domain_vtsm(dvdnav_t *this) { + return _dvdnav_is_domain(this, VTSM_DOMAIN); +} +/* Video Title domain (playing movie). */ +int8_t dvdnav_is_domain_vts(dvdnav_t *this) { + return _dvdnav_is_domain(this, VTS_DOMAIN); +} + +/* Generally delegate angle information handling to + * VM */ +dvdnav_status_t dvdnav_angle_change(dvdnav_t *this, int angle) { + int num, current; + + if(!this) { + return S_ERR; + } + + if(dvdnav_get_angle_info(this, ¤t, &num) != S_OK) { + printerr("Error getting angle info"); + return S_ERR; + } + + /* Set angle SPRM if valid */ + if((angle > 0) && (angle <= num)) { + this->vm->state.AGL_REG = angle; + } else { + printerr("Passed an invalid angle number"); + return S_ERR; + } + + return S_OK; +} +/* FIXME: change order of current_angle, number_of_angles */ +dvdnav_status_t dvdnav_get_angle_info(dvdnav_t *this, int* current_angle, + int *number_of_angles) { + if(!this || !this->vm) { + return S_ERR; + } + + if(!current_angle || !number_of_angles) { + printerr("Passed a NULL pointer"); + return S_ERR; + } + + vm_get_angle_info(this->vm, number_of_angles, current_angle); + + return S_OK; +} + +dvdnav_status_t dvdnav_get_cell_info(dvdnav_t *this, int* current_angle, + int *number_of_angles) { + if(!this || !this->vm) { + return S_ERR; + } + *current_angle=this->position_next.cell; + return S_OK; +} + +pci_t* dvdnav_get_current_nav_pci(dvdnav_t *this) { + if(!this || !this->vm) return 0; + return &this->pci; +} + +dsi_t* dvdnav_get_current_nav_dsi(dvdnav_t *this) { + if(!this || !this->vm) return 0; + return &this->dsi; +} + +uint32_t dvdnav_get_next_still_flag(dvdnav_t *this) { + if(!this || !this->vm) { + return S_ERR; + } + return this->position_next.still; +} + +/* + * $Log: dvdnav.c,v $ + * Revision 1.1 2002/08/08 17:49:21 richwareham + * First stage of DVD plugin -> dvdnav conversion + * + * Revision 1.29 2002/07/25 14:51:40 richwareham + * Moved get_current_nav_pci into dvdnac.c, changed example to use it instead of 'home-rolled' + * check_packet. + * + * Revision 1.28 2002/07/25 14:42:33 richwareham + * Patch from aschultz@cs.uni-magdeburg.de to allow for still-frame 'peek-ahead' + * + * Revision 1.27 2002/07/12 15:46:44 mroi + * use new memcopy'less read ahead cache + * + * Revision 1.26 2002/07/06 16:24:54 mroi + * * fix debug messages + * * send spu stream change event only, when there are new streams + * (should fix problems with Terminator disk 2) + * + * Revision 1.25 2002/07/05 14:18:54 mroi + * report all spu types (widescreen, letterbox and pan&scan), not widescreen + * only and report the stream's scale permissions to detect pan&scan material + * + * Revision 1.24 2002/07/05 01:42:30 jcdutton + * Add more debug info for Menu language selection. + * Only do vm_start when we have to. + * + * Revision 1.23 2002/07/02 22:57:09 jcdutton + * Rename some of the functions in vm.c to help readability. + * Hopefully fix __FUNCTION__ problem. Use __func_ as recommended in C99. + * Fix bug where libdvdnav would not immeadiately replay the same cell due to menu buttons. + * + * Revision 1.22 2002/06/25 13:37:11 jcdutton + * Revert back to old read_cache method. + * Some new optimizations added to the old read_cache method, thus reducing the amount of calls to read blocks from the DVD device. + * + * Revision 1.21 2002/06/06 15:03:09 richwareham + * Biiiiiiig change to let doxygen generate some docs for the library. Note that I'm in no way sure that the autoconf stuff plays nice. + * + * Revision 1.20 2002/06/04 13:35:16 richwareham + * Removed more C++ style comments + * + * Revision 1.19 2002/05/30 23:15:14 richwareham + * First draft of removing HAVE_DVDREAD9 + * + * Revision 1.18 2002/05/30 09:52:29 richwareham + * 'Objectified' the read-ahead cache in preparation to implement a 'proper' threaded cache a-la that recommended in the DVD Demystified book. + * + * Revision 1.17 2002/05/09 11:57:24 richwareham + * Angles now work (still a few wrinkles though -- e.g. angle does not reset to '1' when returning to menus) + * + * Revision 1.16 2002/04/24 21:15:25 jcdutton + * Quiet please!!! + * + * Revision 1.15 2002/04/24 00:47:46 jcdutton + * Some more cleanups. + * Improve button passing. + * + * Revision 1.14 2002/04/23 13:26:08 jcdutton + * Add some comments, FIXMEs. + * The main point being that dvdnav_get_next_block is almost in a state where it can be optional whether the application programmer uses it, or implements their own version of the function. That is been the main reason for the re-write of this function recently. + * + * Revision 1.13 2002/04/23 12:55:40 jcdutton + * Removed un-needed variables. + * General Clean up. + * + * Revision 1.12 2002/04/23 12:34:39 f1rmb + * Why rewrite vm function, use it instead (this remark is for me, of course ;-) ). + * Comment unused var, shut compiler warnings. + * + * Revision 1.11 2002/04/23 02:12:27 jcdutton + * Re-implemented seeking. + * + * Revision 1.10 2002/04/23 00:07:16 jcdutton + * Name stills work better. + * + * Revision 1.9 2002/04/22 22:00:48 jcdutton + * Start of rewrite of libdvdnav. Still need to re-implement seeking. + * + * Revision 1.8 2002/04/22 20:57:14 f1rmb + * Change/fix SPU active stream id. Same for audio. Few new functions, largely + * inspired from libogle ;-). + * + * Revision 1.7 2002/04/10 16:45:57 jcdutton + * Actually fix the const this time! + * + * Revision 1.6 2002/04/07 14:10:11 richwareham + * Stop C++ bitching about some things and extend the menus example + * + * Revision 1.5 2002/04/06 18:42:05 jcdutton + * Slight correction to handle quicker menu transitions. + * + * Revision 1.4 2002/04/06 18:31:50 jcdutton + * Some cleaning up. + * changed exit(1) to assert(0) so they actually get seen by the user so that it helps developers more. + * + * Revision 1.3 2002/04/02 18:22:27 richwareham + * Added reset patch from Kees Cook <kees@outflux.net> + * + * Revision 1.2 2002/04/01 18:56:28 richwareham + * Added initial example programs directory and make sure all debug/error output goes to stderr. + * + * Revision 1.1.1.1 2002/03/12 19:45:57 richwareham + * Initial import + * + * Revision 1.28 2002/02/02 23:26:20 richwareham + * Restored title selection + * + * Revision 1.27 2002/02/01 15:48:10 richwareham + * Re-implemented angle selection and title/chapter display + * + * Revision 1.26 2002/01/31 16:53:49 richwareham + * Big patch from Daniel Caujolle-Bert to (re)implement SPU/Audio language display + * + * Revision 1.25 2002/01/24 20:53:50 richwareham + * Added option to _not_ use DVD read-ahead to options + * + * Revision 1.24 2002/01/20 15:54:59 jcdutton + * Implement seeking. + * It is still a bit buggy, but works sometimes. + * I need to find out how to make the jump clean. + * At the moment, some corruption of the mpeg2 stream occurs, + * which causes libmpeg2 to crash. + * + * Revision 1.23 2002/01/18 00:23:52 jcdutton + * Support Ejecting of DVD. + * It will first un-mount the DVD, then eject it. + * + * Revision 1.22 2002/01/17 14:50:32 jcdutton + * Fix corruption of stream during menu transitions. + * Menu transitions are now clean. + * + * Revision 1.21 2002/01/15 00:37:03 jcdutton + * Just a few cleanups, and a assert fix. (memset fixed it) + * + * Revision 1.20 2002/01/13 22:17:57 jcdutton + * Change logging. + * + * + */ |