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kateenc: Refactoring for readability and leak fixing
Instead of a massive if/else/if/else/if/else/...: * Use a common cleanup path for allocated items just before leaving the function (which will be free-d only if we're not dealing with a delayed SPU). * "goto" that cleanup path wherever needed CID #1427096 CID #1427114
This commit is contained in:
Edward Hervey
Edward Hervey
parent
568c552ac0
commit
c755ad5032
1 changed files with 92 additions and 87 deletions
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@ -780,6 +780,8 @@ gst_kate_enc_chain_spu (GstKateEnc * ke, GstBuffer * buf)
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kate_palette *kpalette;
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GstFlowReturn rflow;
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int ret = 0;
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GstClockTime start, stop;
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kate_float t0, t1;
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/* allocate region, bitmap, and palette, in case we have to delay encoding them */
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kregion = (kate_region *) g_malloc (sizeof (kate_region));
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@ -810,106 +812,109 @@ gst_kate_enc_chain_spu (GstKateEnc * ke, GstBuffer * buf)
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}
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}
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#endif
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g_free (kregion);
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g_free (kbitmap);
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g_free (kpalette);
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goto beach;
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}
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} else if (G_UNLIKELY (kbitmap->width == 0 || kbitmap->height == 0)) {
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if (G_UNLIKELY (kbitmap->width == 0 || kbitmap->height == 0)) {
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/* there are some DVDs (well, at least one) where some dimwits put in a wholly transparent full screen 720x576 SPU !!!!?! */
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GST_WARNING_OBJECT (ke, "SPU is totally invisible - dimwits");
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rflow = GST_FLOW_OK;
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} else {
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/* timestamp offsets are hidden in the SPU packets */
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GstClockTime start =
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GST_BUFFER_TIMESTAMP (buf) + GST_KATE_STM_TO_GST (ke->show_time);
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GstClockTime stop =
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GST_BUFFER_TIMESTAMP (buf) + GST_KATE_STM_TO_GST (ke->hide_time);
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kate_float t0 = start / (double) GST_SECOND;
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kate_float t1 = stop / (double) GST_SECOND;
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GST_DEBUG_OBJECT (ke, "buf ts %f, start/show %hu/%hu",
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GST_BUFFER_TIMESTAMP (buf) / (double) GST_SECOND, ke->show_time,
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ke->hide_time);
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goto beach;
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}
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/* timestamp offsets are hidden in the SPU packets */
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start = GST_BUFFER_TIMESTAMP (buf) + GST_KATE_STM_TO_GST (ke->show_time);
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stop = GST_BUFFER_TIMESTAMP (buf) + GST_KATE_STM_TO_GST (ke->hide_time);
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t0 = start / (double) GST_SECOND;
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t1 = stop / (double) GST_SECOND;
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GST_DEBUG_OBJECT (ke, "buf ts %f, start/show %hu/%hu",
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GST_BUFFER_TIMESTAMP (buf) / (double) GST_SECOND, ke->show_time,
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ke->hide_time);
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#if 0
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{
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static int spu_count = 0;
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FILE *f;
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char name[32];
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snprintf (name, sizeof (name), "/tmp/spu_%04d", spu_count++);
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name[sizeof (name) - 1] = 0;
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f = fopen (name, "w");
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if (f) {
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fwrite (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), 1, f);
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fclose (f);
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}
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{
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static int spu_count = 0;
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FILE *f;
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char name[32];
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snprintf (name, sizeof (name), "/tmp/spu_%04d", spu_count++);
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name[sizeof (name) - 1] = 0;
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f = fopen (name, "w");
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if (f) {
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fwrite (GST_BUFFER_DATA (buf), GST_BUFFER_SIZE (buf), 1, f);
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fclose (f);
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}
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}
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#endif
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GST_DEBUG_OBJECT (ke, "Encoding %" G_GSIZE_FORMAT "x%" G_GSIZE_FORMAT
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" SPU: (%" G_GSIZE_FORMAT " bytes) from %f to %f",
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kbitmap->width, kbitmap->height, gst_buffer_get_size (buf), t0, t1);
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GST_DEBUG_OBJECT (ke, "Encoding %" G_GSIZE_FORMAT "x%" G_GSIZE_FORMAT
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" SPU: (%" G_GSIZE_FORMAT " bytes) from %f to %f",
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kbitmap->width, kbitmap->height, gst_buffer_get_size (buf), t0, t1);
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ret = kate_encode_set_region (&ke->k, kregion);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to set region: %s", gst_kate_util_get_error_message (ret)));
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rflow = GST_FLOW_ERROR;
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} else {
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ret = kate_encode_set_palette (&ke->k, kpalette);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to set palette: %s",
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gst_kate_util_get_error_message (ret)));
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rflow = GST_FLOW_ERROR;
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} else {
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ret = kate_encode_set_bitmap (&ke->k, kbitmap);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to set bitmap: %s",
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gst_kate_util_get_error_message (ret)));
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rflow = GST_FLOW_ERROR;
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} else {
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/* Some SPUs have no hide time - so I'm going to delay the encoding of the packet
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till either a suitable event happens, and the time of this event will be used
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as the end time of this SPU, which will then be encoded and sent off. Suitable
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events are the arrival of a subsequent SPU (eg, this SPU will replace the one
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with no end), EOS, a new segment event, or a time threshold being reached */
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if (ke->hide_time <= ke->show_time) {
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GST_INFO_OBJECT (ke,
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"Cannot encode SPU packet now, hide time is now known (starting at %f) - delaying",
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t0);
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ke->delayed_spu = TRUE;
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ke->delayed_start = start;
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ke->delayed_bitmap = kbitmap;
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ke->delayed_palette = kpalette;
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ke->delayed_region = kregion;
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rflow = GST_FLOW_OK;
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} else {
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ret = kate_encode_text (&ke->k, t0, t1, "", 0, &kp);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to encode empty text for SPU buffer: %s",
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gst_kate_util_get_error_message (ret)));
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rflow = GST_FLOW_ERROR;
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} else {
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rflow =
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gst_kate_enc_chain_push_packet (ke, &kp, start,
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stop - start + 1);
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}
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}
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}
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}
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}
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ret = kate_encode_set_region (&ke->k, kregion);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to set region: %s", gst_kate_util_get_error_message (ret)));
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goto error_return;
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}
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if (!ke->delayed_spu) {
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g_free (kpalette->colors);
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g_free (kpalette);
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g_free (kbitmap->pixels);
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g_free (kbitmap);
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g_free (kregion);
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}
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ret = kate_encode_set_palette (&ke->k, kpalette);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to set palette: %s", gst_kate_util_get_error_message (ret)));
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goto error_return;
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}
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ret = kate_encode_set_bitmap (&ke->k, kbitmap);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to set bitmap: %s", gst_kate_util_get_error_message (ret)));
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goto error_return;
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}
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/* Some SPUs have no hide time - so I'm going to delay the encoding of the packet
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till either a suitable event happens, and the time of this event will be used
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as the end time of this SPU, which will then be encoded and sent off. Suitable
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events are the arrival of a subsequent SPU (eg, this SPU will replace the one
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with no end), EOS, a new segment event, or a time threshold being reached */
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if (ke->hide_time <= ke->show_time) {
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GST_INFO_OBJECT (ke,
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"Cannot encode SPU packet now, hide time is now known (starting at %f) - delaying",
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t0);
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ke->delayed_spu = TRUE;
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ke->delayed_start = start;
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ke->delayed_bitmap = kbitmap;
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ke->delayed_palette = kpalette;
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ke->delayed_region = kregion;
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rflow = GST_FLOW_OK;
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goto beach;
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}
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ret = kate_encode_text (&ke->k, t0, t1, "", 0, &kp);
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if (G_UNLIKELY (ret < 0)) {
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GST_ELEMENT_ERROR (ke, STREAM, ENCODE, (NULL),
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("Failed to encode empty text for SPU buffer: %s",
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gst_kate_util_get_error_message (ret)));
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goto error_return;
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}
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rflow = gst_kate_enc_chain_push_packet (ke, &kp, start, stop - start + 1);
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beach:
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/* Cleanup data if we're not keeping it around */
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if (!ke->delayed_spu) {
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g_free (kpalette->colors);
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g_free (kpalette);
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g_free (kbitmap->pixels);
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g_free (kbitmap);
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g_free (kregion);
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}
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return rflow;
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error_return:
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{
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rflow = GST_FLOW_ERROR;
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goto beach;
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}
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}
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static GstFlowReturn
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