Added information regarding the end of packet position in the index
This commit is contained in:
Francois-Olivier Devaux
parent
acfe0ad645
commit
7a2d96efe1
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@ -9,6 +9,7 @@ August 30, 2007
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* [FOD] Changed the OpenJPEG library interface to enable users to access information regarding the codestream (also called codestream index).
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This index is usefull for all applications requiring to have a scalable acces to the codestream (like JPIP applications, ...)
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Currently, this information is only available when encoding an image.
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+ [FOD] Added the information regarding the end of packet position in the index
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August 28, 2007
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* [FOD] Fixed wrong destructors called in openjpeg.c
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@ -598,14 +598,14 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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}
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for (tileno = 0; tileno < cstr_info->tw * cstr_info->th; tileno++) {
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int start_pos, end_pos;
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int start_pos, end_ph_pos, end_pos;
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double disto = 0;
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pack_nb = 0;
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fprintf(stream, "\nTILE %d DETAILS\n", tileno);
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if (cstr_info->prog == LRCP) { /* LRCP */
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fprintf(stream, "pack_nb tileno layno resno compno precno start_pos end_pos disto\n");
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fprintf(stream, "LRCP\npack_nb tileno layno resno compno precno start_pos end_ph_pos end_pos disto\n");
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for (layno = 0; layno < cstr_info->layer; layno++) {
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for (resno = 0; resno < cstr_info->decomposition + 1; resno++) {
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@ -613,10 +613,11 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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int prec_max = cstr_info->tile[tileno].pw[resno] * cstr_info->tile[tileno].ph[resno];
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for (precno = 0; precno < prec_max; precno++) {
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start_pos = cstr_info->tile[tileno].packet[pack_nb].start_pos;
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end_ph_pos = cstr_info->tile[tileno].packet[pack_nb].end_ph_pos;
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end_pos = cstr_info->tile[tileno].packet[pack_nb].end_pos;
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disto = cstr_info->tile[tileno].packet[pack_nb].disto;
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fprintf(stream, "%4d %6d %7d %5d %6d %6d %9d %9d %8e\n",
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pack_nb, tileno, layno, resno, compno, precno, start_pos, end_pos, disto);
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fprintf(stream, "%4d %6d %7d %5d %6d %6d %6d %6d %7d %8e\n",
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pack_nb, tileno, layno, resno, compno, precno, start_pos, end_ph_pos, end_pos, disto);
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total_disto += disto;
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pack_nb++;
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}
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@ -626,7 +627,7 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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} /* LRCP */
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else if (cstr_info->prog == RLCP) { /* RLCP */
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fprintf(stream, "pack_nb tileno resno layno compno precno start_pos end_pos disto\n");
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fprintf(stream, "RLCP\npack_nb tileno resno layno compno precno start_pos end_ph_pos end_pos disto\n");
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for (resno = 0; resno < cstr_info->decomposition + 1; resno++) {
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for (layno = 0; layno < cstr_info->layer; layno++) {
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@ -634,10 +635,11 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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int prec_max = cstr_info->tile[tileno].pw[resno] * cstr_info->tile[tileno].ph[resno];
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for (precno = 0; precno < prec_max; precno++) {
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start_pos = cstr_info->tile[tileno].packet[pack_nb].start_pos;
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end_ph_pos = cstr_info->tile[tileno].packet[pack_nb].end_ph_pos;
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end_pos = cstr_info->tile[tileno].packet[pack_nb].end_pos;
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disto = cstr_info->tile[tileno].packet[pack_nb].disto;
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fprintf(stream, "%4d %6d %5d %7d %6d %6d %9d %9d %8e\n",
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pack_nb, tileno, resno, layno, compno, precno, start_pos, end_pos, disto);
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fprintf(stream, "%4d %6d %5d %7d %6d %6d %9d %9d %7d %8e\n",
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pack_nb, tileno, resno, layno, compno, precno, start_pos, end_ph_pos, end_pos, disto);
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total_disto += disto;
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pack_nb++;
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}
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@ -647,7 +649,7 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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} /* RLCP */
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else if (cstr_info->prog == RPCL) { /* RPCL */
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fprintf(stream, "pack_nb tileno resno precno compno layno start_pos end_pos disto\n");
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fprintf(stream, "RPCL\npack_nb tileno resno precno compno layno start_pos end_ph_pos end_pos disto\n");
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for (resno = 0; resno < cstr_info->decomposition + 1; resno++) {
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/* I suppose components have same XRsiz, YRsiz */
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@ -669,10 +671,11 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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if (precno_x*pcx == x ) {
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for (layno = 0; layno < cstr_info->layer; layno++) {
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start_pos = cstr_info->tile[tileno].packet[pack_nb].start_pos;
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end_ph_pos = cstr_info->tile[tileno].packet[pack_nb].end_ph_pos;
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end_pos = cstr_info->tile[tileno].packet[pack_nb].end_pos;
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disto = cstr_info->tile[tileno].packet[pack_nb].disto;
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fprintf(stream, "%4d %6d %5d %6d %6d %7d %9d %9d %8e\n",
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pack_nb, tileno, resno, precno, compno, layno, start_pos, end_pos, disto);
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fprintf(stream, "%4d %6d %5d %6d %6d %7d %9d %9d %7d %8e\n",
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pack_nb, tileno, resno, precno, compno, layno, start_pos, end_ph_pos, end_pos, disto);
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total_disto += disto;
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pack_nb++;
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}
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@ -691,7 +694,7 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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int x1 = x0 + cstr_info->tile_x;
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int y1 = y0 + cstr_info->tile_y;
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fprintf(stream, "pack_nb tileno precno compno resno layno start_pos end_pos disto\n");
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fprintf(stream, "PCRL\npack_nb tileno precno compno resno layno start_pos end_ph_pos end_pos disto\n");
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for (compno = 0; compno < cstr_info->comp; compno++) {
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for (resno = 0; resno < cstr_info->decomposition + 1; resno++) {
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@ -708,10 +711,11 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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if (precno_x*pcx == x ) {
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for (layno = 0; layno < cstr_info->layer; layno++) {
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start_pos = cstr_info->tile[tileno].packet[pack_nb].start_pos;
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end_ph_pos = cstr_info->tile[tileno].packet[pack_nb].end_ph_pos;
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end_pos = cstr_info->tile[tileno].packet[pack_nb].end_pos;
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disto = cstr_info->tile[tileno].packet[pack_nb].disto;
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fprintf(stream, "%4d %6d %6d %6d %5d %7d %9d %9d %8e\n",
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pack_nb, tileno, precno, compno, resno, layno, start_pos, end_pos, disto);
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fprintf(stream, "%4d %6d %6d %6d %5d %7d %9d %9d %7d %8e\n",
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pack_nb, tileno, precno, compno, resno, layno, start_pos, end_ph_pos, end_pos, disto);
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total_disto += disto;
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pack_nb++;
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}
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@ -725,7 +729,7 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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} /* PCRL */
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else { /* CPRL */
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fprintf(stream, "pack_nb tileno compno precno resno layno start_pos end_pos disto\n");
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fprintf(stream, "CPRL\npack_nb tileno compno precno resno layno start_pos end_ph_pos end_pos disto\n");
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for (compno = 0; compno < cstr_info->comp; compno++) {
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/* I suppose components have same XRsiz, YRsiz */
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@ -748,10 +752,11 @@ int write_index_file(opj_codestream_info_t *cstr_info, char *index) {
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if (precno_x*pcx == x ) {
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for (layno = 0; layno < cstr_info->layer; layno++) {
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start_pos = cstr_info->tile[tileno].packet[pack_nb].start_pos;
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end_ph_pos = cstr_info->tile[tileno].packet[pack_nb].end_ph_pos;
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end_pos = cstr_info->tile[tileno].packet[pack_nb].end_pos;
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disto = cstr_info->tile[tileno].packet[pack_nb].disto;
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fprintf(stream, "%4d %6d %6d %6d %5d %7d %9d %9d %8e\n",
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pack_nb, tileno, compno, precno, resno, layno, start_pos, end_pos, disto);
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fprintf(stream, "%4d %6d %6d %6d %5d %7d %9d %9d %7d %8e\n",
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pack_nb, tileno, compno, precno, resno, layno, start_pos, end_ph_pos, end_pos, disto);
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total_disto += disto;
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pack_nb++;
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}
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@ -590,9 +590,11 @@ typedef struct opj_image_comptparm {
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Index structure : Information concerning a packet inside tile
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*/
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typedef struct opj_packet_info {
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/** start position */
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/** packet start position (including SOP marker if it exists) */
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int start_pos;
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/** end position */
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/** end of packet header position (including EPH marker if it exists)*/
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int end_ph_pos;
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/** packet end position */
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int end_pos;
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/** packet distorsion */
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double disto;
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@ -128,7 +128,6 @@ static int t2_getnumpasses(opj_bio_t *bio) {
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static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_iterator_t *pi, unsigned char *dest, int length, opj_codestream_info_t *cstr_info, int tileno) {
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int bandno, cblkno;
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unsigned char *sop = 0, *eph = 0;
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unsigned char *c = dest;
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int compno = pi->compno; /* component value */
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@ -143,15 +142,12 @@ static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_itera
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/* <SOP 0xff91> */
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if (tcp->csty & J2K_CP_CSTY_SOP) {
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sop = (unsigned char *) opj_malloc(6 * sizeof(unsigned char));
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sop[0] = 255;
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sop[1] = 145;
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sop[2] = 0;
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sop[3] = 4;
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sop[4] = (cstr_info->num % 65536) / 256;
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sop[5] = (cstr_info->num % 65536) % 256;
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memcpy(c, sop, 6);
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opj_free(sop);
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c[0] = 255;
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c[1] = 145;
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c[2] = 0;
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c[3] = 4;
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c[4] = (cstr_info->num % 65536) / 256;
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c[5] = (cstr_info->num % 65536) % 256;
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c += 6;
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}
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/* </SOP> */
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@ -245,19 +241,24 @@ static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_itera
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}
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c += bio_numbytes(bio);
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bio_destroy(bio);
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/* <EPH 0xff92> */
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if (tcp->csty & J2K_CP_CSTY_EPH) {
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eph = (unsigned char *) opj_malloc(2 * sizeof(unsigned char));
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eph[0] = 255;
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eph[1] = 146;
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memcpy(c, eph, 2);
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opj_free(eph);
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c[0] = 255;
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c[1] = 146;
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c += 2;
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}
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/* </EPH> */
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/* << INDEX */
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// End of packet header position. Currently only represents the distance to start of packet
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// Will be updated later by incrementing with packet start value
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if(cstr_info && cstr_info->index_write && cstr_info->index_on) {
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opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->num];
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info_PK->end_ph_pos = (int)(c - dest);
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}
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/* INDEX >> */
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/* Writing the packet body */
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@ -277,16 +278,15 @@ static int t2_encode_packet(opj_tcd_tile_t * tile, opj_tcp_t * tcp, opj_pi_itera
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memcpy(c, layer->data, layer->len);
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cblk->numpasses += layer->numpasses;
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c += layer->len;
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/* ADD for index Cfr. Marcela --> delta disto by packet */
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/* << INDEX */
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if(cstr_info && cstr_info->index_write && cstr_info->index_on) {
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opj_tile_info_t *info_TL = &cstr_info->tile[tileno];
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opj_packet_info_t *info_PK = &info_TL->packet[cstr_info->num];
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opj_packet_info_t *info_PK = &cstr_info->tile[tileno].packet[cstr_info->num];
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info_PK->disto += layer->disto;
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if (cstr_info->D_max < info_PK->disto) {
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cstr_info->D_max = info_PK->disto;
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}
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}
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/* </ADD> */
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/* INDEX >> */
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}
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}
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@ -630,6 +630,8 @@ int t2_encode_packets(opj_t2_t* t2,int tileno, opj_tcd_tile_t *tile, int maxlaye
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info_PK->start_pos = (cp->tp_on && info_PK->start_pos) ? info_PK->start_pos : info_TL->packet[cstr_info->num - 1].end_pos + 1;
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}
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info_PK->end_pos = info_PK->start_pos + e - 1;
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info_PK->end_ph_pos += info_PK->start_pos - 1; // End of packet header which now only represents the distance
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// to start of packet is incremented by value of start of packet
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}
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cstr_info->num++;
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