--- /dev/null
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+
+#include <gstriff.h>
+
+#define GST_RIFF_ENCODER_BUF_SIZE 1024
+
+//#define debug(format,args...) g_print(format,##args)
+#define debug(format,args...)
+
+#define ADD_CHUNK(riffenc, chunkid, chunksize) \
+{ \
+ gst_riff_chunk *chunk;\
+ chunk = (gst_riff_chunk *)(riffenc->dataleft + riffenc->nextlikely);\
+ chunk->id = chunkid; \
+ chunk->size = chunksize; \
+ riffenc->nextlikely += sizeof(gst_riff_chunk); \
+}
+
+#define ADD_LIST(riffenc, listsize, listtype) \
+{ \
+ gst_riff_list *list;\
+ list = (gst_riff_list *)(riffenc->dataleft + riffenc->nextlikely); \
+ list->id = GST_RIFF_TAG_LIST; \
+ list->size = listsize; \
+ list->type = listtype; \
+ riffenc->nextlikely += sizeof(gst_riff_list); \
+}
+
+
+GstRiff *gst_riff_encoder_new(guint32 type) {
+ GstRiff *riff;
+ gst_riff_list *list;
+
+ debug("gst_riff_encoder: making %4.4s encoder\n", (char *)&type);
+ riff = (GstRiff *)g_malloc(sizeof(GstRiff));
+ g_return_val_if_fail(riff != NULL, NULL);
+
+ riff->form = 0;
+ riff->chunks = NULL;
+ riff->state = GST_RIFF_STATE_INITIAL;
+ riff->curoffset = 0;
+ riff->incomplete_chunk = NULL;
+ riff->dataleft = g_malloc(GST_RIFF_ENCODER_BUF_SIZE);
+ riff->dataleft_size = GST_RIFF_ENCODER_BUF_SIZE;
+ riff->nextlikely = 0;
+
+ list = (gst_riff_list *)riff->dataleft;
+ list->id = GST_RIFF_TAG_RIFF;
+ list->size = 0x00FFFFFF;
+ list->type = GST_RIFF_RIFF_AVI;
+
+ riff->nextlikely += sizeof(gst_riff_list);
+
+ return riff;
+}
+
+gint gst_riff_encoder_avih(GstRiff *riff, gst_riff_avih *head, gulong size) {
+ gst_riff_chunk *chunk;
+
+ g_return_val_if_fail(riff->state == GST_RIFF_STATE_INITIAL, GST_RIFF_EINVAL);
+
+ debug("gst_riff_encoder: add avih\n");
+
+ ADD_LIST(riff, 0xB8, GST_RIFF_LIST_hdrl);
+
+ ADD_CHUNK(riff, GST_RIFF_TAG_avih, size);
+
+ chunk = (gst_riff_chunk *)(riff->dataleft + riff->nextlikely);
+ memcpy(chunk, head, size);
+ riff->nextlikely += size;
+
+ riff->state = GST_RIFF_STATE_HASAVIH;
+ return GST_RIFF_OK;
+}
+
+gint gst_riff_encoder_strh(GstRiff *riff, guint32 fcc_type, gst_riff_strh *head, gulong size) {
+ gst_riff_chunk *chunk;
+
+ g_return_val_if_fail(riff->state == GST_RIFF_STATE_HASAVIH ||
+ riff->state == GST_RIFF_STATE_HASSTRF, GST_RIFF_EINVAL);
+
+ debug("gst_riff_encoder: add strh type %08x (%4.4s)\n", fcc_type, (char *)&fcc_type);
+
+ ADD_LIST(riff, 108, GST_RIFF_LIST_strl);
+
+ ADD_CHUNK(riff, GST_RIFF_TAG_strh, size);
+
+ chunk = (gst_riff_chunk *)(riff->dataleft + riff->nextlikely);
+ head->type = fcc_type;
+ memcpy(chunk, head, size);
+
+ riff->nextlikely += size;
+
+ riff->state = GST_RIFF_STATE_HASSTRH;
+ return GST_RIFF_OK;
+}
+
+gint gst_riff_encoder_strf(GstRiff *riff, void *format, gulong size) {
+ gst_riff_chunk *chunk;
+
+ g_return_val_if_fail(riff->state == GST_RIFF_STATE_HASSTRH, GST_RIFF_EINVAL);
+
+ debug("gst_riff_encoder: add strf\n");
+
+ ADD_CHUNK(riff, GST_RIFF_TAG_strf, size);
+
+ chunk = (gst_riff_chunk *)(riff->dataleft + riff->nextlikely);
+ memcpy(chunk, format, size);
+ riff->nextlikely += size;
+
+ riff->state = GST_RIFF_STATE_HASSTRF;
+ return GST_RIFF_OK;
+}
+
+gint gst_riff_encoder_chunk(GstRiff *riff, guint32 chunk_type, void *chunkdata, gulong size) {
+ gst_riff_chunk *chunk;
+
+ g_return_val_if_fail(riff->state == GST_RIFF_STATE_HASSTRF ||
+ riff->state == GST_RIFF_STATE_MOVI, GST_RIFF_EINVAL);
+
+ if (riff->state != GST_RIFF_STATE_MOVI) {
+ ADD_LIST(riff, 0x00FFFFFF, GST_RIFF_LIST_movi);
+ riff->state = GST_RIFF_STATE_MOVI;
+ }
+
+ debug("gst_riff_encoder: add chunk type %08x (%4.4s)\n", chunk_type, (char *)&chunk_type);
+
+ ADD_CHUNK(riff, chunk_type, size);
+
+ if (chunkdata != NULL) {
+ chunk = (gst_riff_chunk *)(riff->dataleft + riff->nextlikely);
+ memcpy(chunk, chunkdata, size);
+ riff->nextlikely += size;
+ }
+
+ return GST_RIFF_OK;
+}
+
+GstBuffer *gst_riff_encoder_get_buffer(GstRiff *riff) {
+ GstBuffer *newbuf;
+
+ newbuf = gst_buffer_new();
+ GST_BUFFER_DATA(newbuf) = riff->dataleft;
+ GST_BUFFER_SIZE(newbuf) = riff->nextlikely;
+
+ return newbuf;
+}
+
+GstBuffer *gst_riff_encoder_get_and_reset_buffer(GstRiff *riff) {
+ GstBuffer *newbuf;
+
+ newbuf = gst_riff_encoder_get_buffer(riff);
+
+ riff->dataleft = g_malloc(GST_RIFF_ENCODER_BUF_SIZE);
+ riff->dataleft_size = GST_RIFF_ENCODER_BUF_SIZE;
+ riff->nextlikely = 0;
+
+ return newbuf;
+}
+
--- /dev/null
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+
+#include <gstriff.h>
+
+//#define debug(format,args...) g_print(format,##args)
+#define debug(format,args...)
+
+
+GstRiff *gst_riff_parser_new(GstRiffCallback function, gpointer data) {
+ GstRiff *riff;
+
+ riff = (GstRiff *)g_malloc(sizeof(GstRiff));
+ g_return_val_if_fail(riff != NULL, NULL);
+
+ riff->form = 0;
+ riff->chunks = NULL;
+ riff->state = 0;
+ riff->curoffset = 0;
+ riff->nextlikely = 0;
+ riff->new_tag_found = function;
+ riff->callback_data = data;
+ riff->incomplete_chunk = NULL;
+ riff->dataleft = NULL;
+
+ return riff;
+}
+
+gint gst_riff_parser_next_buffer(GstRiff *riff,GstBuffer *buf,gulong off) {
+ gulong last, size;
+ GstRiffChunk *chunk;
+
+ g_return_val_if_fail(riff != NULL, GST_RIFF_EINVAL);
+ g_return_val_if_fail(buf != NULL, GST_RIFF_EINVAL);
+ g_return_val_if_fail(GST_BUFFER_DATA(buf) != NULL, GST_RIFF_EINVAL);
+
+ size = GST_BUFFER_SIZE(buf);
+ last = off + size;
+
+ debug("gst_riff_parser: offset new buffer 0x%08lx size 0x%08x\n", off, GST_BUFFER_SIZE(buf));
+
+ if (riff->dataleft) {
+ gulong newsize;
+
+ debug("gst_riff_parser: recovering left data\n");
+ newsize = riff->dataleft_size + size;
+ riff->dataleft = g_realloc(riff->dataleft, newsize);
+ memcpy(riff->dataleft+riff->dataleft_size, GST_BUFFER_DATA(buf), size);
+ gst_buffer_unref(buf);
+
+ buf = gst_buffer_new();
+ GST_BUFFER_DATA(buf) = riff->dataleft;
+ GST_BUFFER_SIZE(buf) = newsize;
+ off -= riff->dataleft_size;
+ //last -= riff->dataleft_size;
+ riff->dataleft = NULL;
+ }
+
+ if (off == 0) {
+ gulong *words = (gulong *)GST_BUFFER_DATA(buf);
+
+ // don't even try to parse the head if it's not there FIXME
+ if (last < 12) {
+ riff->state = GST_RIFF_ENOTRIFF;
+ return riff->state;
+ }
+
+ //g_print("testing is 0x%08lx '%s'\n",words[0],gst_riff_id_to_fourcc(words[0]));
+ /* verify this is a valid RIFF file, first of all */
+ if (words[0] != GST_RIFF_TAG_RIFF) {
+ riff->state = GST_RIFF_ENOTRIFF;
+ return riff->state;
+ }
+ riff->form = words[2];
+ //g_print("form is 0x%08lx '%s'\n",words[2],gst_riff_id_to_fourcc(words[2]));
+ riff->nextlikely = 12; /* skip 'RIFF', length, and form */
+ // all OK here
+ riff->incomplete_chunk = NULL;
+ }
+
+ // if we have an incomplete chunk from the previous buffer
+ if (riff->incomplete_chunk) {
+ guint leftover;
+ debug("gst_riff_parser: have incomplete chunk %08x filled\n", riff->incomplete_chunk_size);
+ leftover = riff->incomplete_chunk->size - riff->incomplete_chunk_size;
+ if (leftover <= size) {
+ debug("gst_riff_parser: we can fill it from %08x with %08x bytes = %08x\n",
+ riff->incomplete_chunk_size, leftover,
+ riff->incomplete_chunk_size+leftover);
+ memcpy(riff->incomplete_chunk->data+riff->incomplete_chunk_size, GST_BUFFER_DATA(buf), leftover);
+
+ if (riff->new_tag_found) {
+ riff->new_tag_found(riff->incomplete_chunk, riff->callback_data);
+ }
+ g_free(riff->incomplete_chunk->data);
+ g_free(riff->incomplete_chunk);
+ riff->incomplete_chunk = NULL;
+ }
+ else {
+ debug("gst_riff_parser: we cannot fill it %08x >= %08lx\n", leftover, size);
+ memcpy(riff->incomplete_chunk->data+riff->incomplete_chunk_size, GST_BUFFER_DATA(buf), size);
+ riff->incomplete_chunk_size += size;
+ return 0;
+ }
+ }
+
+ if ((riff->nextlikely+12) > last) {
+ guint left = last - riff->nextlikely;
+ debug("gst_riff_parser: not enough data next 0x%08x last 0x%08lx %08x %08x\n",riff->nextlikely,
+ last, left, off);
+
+ riff->dataleft = g_malloc(left);
+ riff->dataleft_size = left;
+ memcpy(riff->dataleft, GST_BUFFER_DATA(buf)+size-left, left);
+
+ return 0;
+ }
+
+ debug("gst_riff_parser: next 0x%08x last 0x%08lx offset %08x\n",riff->nextlikely, last, off);
+ /* loop while the next likely chunk header is in this buffer */
+ while ((riff->nextlikely+12) <= last) {
+ gulong *words = (gulong *)((guchar *)GST_BUFFER_DATA(buf) + riff->nextlikely - off );
+
+ // loop over all of the chunks to check which one is finished
+ while (riff->chunks) {
+ chunk = g_list_nth_data(riff->chunks, 0);
+
+ debug("gst_riff_parser: next 0x%08x offset 0x%08lx size 0x%08x\n",riff->nextlikely,
+ chunk->offset, chunk->size);
+ if (riff->nextlikely >= chunk->offset+chunk->size) {
+ debug("gst_riff_parser: found END LIST\n");
+ // we have the end of the chunk on the stack, remove it
+ riff->chunks = g_list_remove(riff->chunks, chunk);
+ }
+ else break;
+ }
+
+ debug("gst_riff_parser: next likely chunk is at offset 0x%08x\n",riff->nextlikely);
+
+ chunk = (GstRiffChunk *)g_malloc(sizeof(GstRiffChunk));
+ g_return_val_if_fail(chunk != NULL, GST_RIFF_ENOMEM);
+
+ chunk->offset = riff->nextlikely+8; /* point to the actual data */
+ chunk->id = words[0];
+ chunk->size = words[1];
+ chunk->data = (gchar *)(words+2);
+ // we need word alignment
+ //if (chunk->size & 0x01) chunk->size++;
+ chunk->form = words[2]; /* fill in the form, might not be valid */
+
+
+ if (chunk->id == GST_RIFF_TAG_LIST) {
+ //g_print("found LIST %s\n", gst_riff_id_to_fourcc(chunk->form));
+ riff->nextlikely += 12;
+ // we push the list chunk on our 'stack'
+ riff->chunks = g_list_prepend(riff->chunks,chunk);
+ // send the buffer to the listener if we have received a function
+ if (riff->new_tag_found) {
+ riff->new_tag_found(chunk, riff->callback_data);
+ }
+ }
+ else {
+
+ debug("gst_riff_parser: chunk id offset %08x is 0x%08lx '%s' and is 0x%08lx long\n",
+ riff->nextlikely, words[0],
+ gst_riff_id_to_fourcc(words[0]),words[1]);
+
+ riff->nextlikely += 8 + chunk->size; /* doesn't include hdr */
+ // if this buffer is incomplete
+ if (riff->nextlikely > last) {
+ guint left = size - (riff->nextlikely - chunk->size - off);
+
+ //g_print("make incomplete buffer %08x\n", left);
+ chunk->data = g_malloc(chunk->size);
+ memcpy(chunk->data, (gchar *)(words+2), left);
+ riff->incomplete_chunk = chunk;
+ riff->incomplete_chunk_size = left;
+ }
+ else {
+ // send the buffer to the listener if we have received a function
+ if (riff->new_tag_found) {
+ riff->new_tag_found(chunk, riff->callback_data);
+ }
+ g_free(chunk);
+ }
+
+ //riff->chunks = g_list_prepend(riff->chunks,chunk);
+ }
+ }
+
+ return 0;
+}
+
--- /dev/null
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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.
+ */
+
+
+#include <gstriff.h>
+
+//#define debug(format,args...) g_print(format,##args)
+#define debug(format,args...)
+
+
+gulong gst_riff_fourcc_to_id(gchar *fourcc) {
+ g_return_val_if_fail(fourcc != NULL, 0);
+
+ return (fourcc[0] << 0) | (fourcc[1] << 8) |
+ (fourcc[2] << 16) | (fourcc[3] << 24);
+}
+
+gchar *gst_riff_id_to_fourcc(gulong id) {
+ gchar *fourcc = (gchar *)g_malloc(5);
+
+ g_return_val_if_fail(fourcc != NULL, NULL);
+
+ fourcc[0] = (id >> 0) & 0xff;
+ fourcc[1] = (id >> 8) & 0xff;
+ fourcc[2] = (id >> 16) & 0xff;
+ fourcc[3] = (id >> 24) & 0xff;
+ fourcc[4] = 0;
+
+ return fourcc;
+}
projects / platform / upstream / gstreamer.git / commitdiff