#include <riff.h>
-/*#define debug(format,args...) g_print(format,##args) */
-#define debug(format,args...)
-
-
-GstRiff *gst_riff_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_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("offset new buffer 0x%08lx size 0x%08x\n", off, GST_BUFFER_SIZE(buf));
-
- if (riff->dataleft) {
- gulong newsize;
-
- debug("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) {
- guint32 *words = (guin32 *)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 (GUINT32_FROM_LE (words[0]) != GST_RIFF_TAG_RIFF) {
- riff->state = GST_RIFF_ENOTRIFF;
- return riff->state;
- }
- riff->form = GUINT32_FROM_LE (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("have incomplete chunk %08x filled\n", riff->incomplete_chunk_size);
- leftover = riff->incomplete_chunk->size - riff->incomplete_chunk_size;
- if (leftover <= size) {
- debug("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("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("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("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) {
- guin32 *words = (guin32 *)((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("next 0x%08x offset 0x%08lx size 0x%08x\n",riff->nextlikely, chunk->offset, chunk->size);
- if (riff->nextlikely >= chunk->offset+chunk->size) {
- /*g_print("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("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 = GUINT32_FROM_LE (words[0]));
- chunk->size = GUINT32_FROM_LE (words[1]);
- chunk->data = (gchar *)(words+2);
- /* we need word alignment */
- /*if (chunk->size & 0x01) chunk->size++; */
- chunk->form = GUINT32_FROM_LE (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("chunk id offset %08x is 0x%08lx '%s' and is 0x%08lx long\n",riff->nextlikely, words[0],
- gst_riff_id_to_fourcc(GUINT32_FROM_LE (words[0])), GUINT32_FROM_LE (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;
-}
-
-
-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;
-}
-
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{
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