* AVPacket functions for libavcodec
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "avcodec.h"
+#include "bytestream.h"
+#include "internal.h"
void av_init_packet(AVPacket *pkt)
{
dst = data; \
} while (0)
-int av_dup_packet(AVPacket *pkt)
+/* Makes duplicates of data, side_data, but does not copy any other fields */
+static int copy_packet_data(AVPacket *pkt, const AVPacket *src, int dup)
{
- AVPacket tmp_pkt;
-
- if (!pkt->buf && pkt->data) {
- tmp_pkt = *pkt;
-
- pkt->data = NULL;
- pkt->side_data = NULL;
- DUP_DATA(pkt->data, tmp_pkt.data, pkt->size, 1, ALLOC_BUF);
+ pkt->data = NULL;
+ pkt->side_data = NULL;
+ if (pkt->buf) {
+ AVBufferRef *ref = av_buffer_ref(src->buf);
+ if (!ref)
+ return AVERROR(ENOMEM);
+ pkt->buf = ref;
+ pkt->data = ref->data;
+ } else {
+ DUP_DATA(pkt->data, src->data, pkt->size, 1, ALLOC_BUF);
+ }
+ if (pkt->side_data_elems && dup)
+ pkt->side_data = src->side_data;
+ if (pkt->side_data_elems && !dup) {
+ return av_copy_packet_side_data(pkt, src);
+ }
+ return 0;
- if (pkt->side_data_elems) {
- int i;
+failed_alloc:
+ av_packet_unref(pkt);
+ return AVERROR(ENOMEM);
+}
- DUP_DATA(pkt->side_data, tmp_pkt.side_data,
- pkt->side_data_elems * sizeof(*pkt->side_data), 0, ALLOC_MALLOC);
+int av_copy_packet_side_data(AVPacket *pkt, const AVPacket *src)
+{
+ if (src->side_data_elems) {
+ int i;
+ DUP_DATA(pkt->side_data, src->side_data,
+ src->side_data_elems * sizeof(*src->side_data), 0, ALLOC_MALLOC);
+ if (src != pkt) {
memset(pkt->side_data, 0,
- pkt->side_data_elems * sizeof(*pkt->side_data));
- for (i = 0; i < pkt->side_data_elems; i++) {
- DUP_DATA(pkt->side_data[i].data, tmp_pkt.side_data[i].data,
- tmp_pkt.side_data[i].size, 1, ALLOC_MALLOC);
- pkt->side_data[i].size = tmp_pkt.side_data[i].size;
- pkt->side_data[i].type = tmp_pkt.side_data[i].type;
- }
+ src->side_data_elems * sizeof(*src->side_data));
+ }
+ for (i = 0; i < src->side_data_elems; i++) {
+ DUP_DATA(pkt->side_data[i].data, src->side_data[i].data,
+ src->side_data[i].size, 1, ALLOC_MALLOC);
+ pkt->side_data[i].size = src->side_data[i].size;
+ pkt->side_data[i].type = src->side_data[i].type;
}
}
+ pkt->side_data_elems = src->side_data_elems;
return 0;
failed_alloc:
FF_ENABLE_DEPRECATION_WARNINGS
#endif
+int av_dup_packet(AVPacket *pkt)
+{
+ AVPacket tmp_pkt;
+
+ if (!pkt->buf && pkt->data) {
+ tmp_pkt = *pkt;
+ return copy_packet_data(pkt, &tmp_pkt, 1);
+ }
+ return 0;
+}
+
+int av_copy_packet(AVPacket *dst, const AVPacket *src)
+{
+ *dst = *src;
+ return copy_packet_data(dst, src, 0);
+}
+
void av_packet_free_side_data(AVPacket *pkt)
{
int i;
for (i = 0; i < pkt->side_data_elems; i++)
- av_free(pkt->side_data[i].data);
+ av_freep(&pkt->side_data[i].data);
av_freep(&pkt->side_data);
pkt->side_data_elems = 0;
}
if ((unsigned)size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
return NULL;
- data = av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
+ data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!data)
return NULL;
return NULL;
}
+const char *av_packet_side_data_name(enum AVPacketSideDataType type)
+{
+ switch(type) {
+ case AV_PKT_DATA_PALETTE: return "Palette";
+ case AV_PKT_DATA_NEW_EXTRADATA: return "New Extradata";
+ case AV_PKT_DATA_PARAM_CHANGE: return "Param Change";
+ case AV_PKT_DATA_H263_MB_INFO: return "H263 MB Info";
+ case AV_PKT_DATA_REPLAYGAIN: return "Replay Gain";
+ case AV_PKT_DATA_DISPLAYMATRIX: return "Display Matrix";
+ case AV_PKT_DATA_STEREO3D: return "Stereo 3D";
+ case AV_PKT_DATA_AUDIO_SERVICE_TYPE: return "Audio Service Type";
+ case AV_PKT_DATA_SKIP_SAMPLES: return "Skip Samples";
+ case AV_PKT_DATA_JP_DUALMONO: return "JP Dual Mono";
+ case AV_PKT_DATA_STRINGS_METADATA: return "Strings Metadata";
+ case AV_PKT_DATA_SUBTITLE_POSITION: return "Subtitle Position";
+ case AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL: return "Matroska BlockAdditional";
+ case AV_PKT_DATA_WEBVTT_IDENTIFIER: return "WebVTT ID";
+ case AV_PKT_DATA_WEBVTT_SETTINGS: return "WebVTT Settings";
+ case AV_PKT_DATA_METADATA_UPDATE: return "Metadata Update";
+ }
+ return NULL;
+}
+
+#define FF_MERGE_MARKER 0x8c4d9d108e25e9feULL
+
+int av_packet_merge_side_data(AVPacket *pkt){
+ if(pkt->side_data_elems){
+ AVBufferRef *buf;
+ int i;
+ uint8_t *p;
+ uint64_t size= pkt->size + 8LL + AV_INPUT_BUFFER_PADDING_SIZE;
+ AVPacket old= *pkt;
+ for (i=0; i<old.side_data_elems; i++) {
+ size += old.side_data[i].size + 5LL;
+ }
+ if (size > INT_MAX)
+ return AVERROR(EINVAL);
+ buf = av_buffer_alloc(size);
+ if (!buf)
+ return AVERROR(ENOMEM);
+ pkt->buf = buf;
+ pkt->data = p = buf->data;
+ pkt->size = size - AV_INPUT_BUFFER_PADDING_SIZE;
+ bytestream_put_buffer(&p, old.data, old.size);
+ for (i=old.side_data_elems-1; i>=0; i--) {
+ bytestream_put_buffer(&p, old.side_data[i].data, old.side_data[i].size);
+ bytestream_put_be32(&p, old.side_data[i].size);
+ *p++ = old.side_data[i].type | ((i==old.side_data_elems-1)*128);
+ }
+ bytestream_put_be64(&p, FF_MERGE_MARKER);
+ av_assert0(p-pkt->data == pkt->size);
+ memset(p, 0, AV_INPUT_BUFFER_PADDING_SIZE);
+ av_packet_unref(&old);
+ pkt->side_data_elems = 0;
+ pkt->side_data = NULL;
+ return 1;
+ }
+ return 0;
+}
+
+int av_packet_split_side_data(AVPacket *pkt){
+ if (!pkt->side_data_elems && pkt->size >12 && AV_RB64(pkt->data + pkt->size - 8) == FF_MERGE_MARKER){
+ int i;
+ unsigned int size;
+ uint8_t *p;
+
+ p = pkt->data + pkt->size - 8 - 5;
+ for (i=1; ; i++){
+ size = AV_RB32(p);
+ if (size>INT_MAX || p - pkt->data < size)
+ return 0;
+ if (p[4]&128)
+ break;
+ p-= size+5;
+ }
+
+ pkt->side_data = av_malloc_array(i, sizeof(*pkt->side_data));
+ if (!pkt->side_data)
+ return AVERROR(ENOMEM);
+
+ p= pkt->data + pkt->size - 8 - 5;
+ for (i=0; ; i++){
+ size= AV_RB32(p);
+ av_assert0(size<=INT_MAX && p - pkt->data >= size);
+ pkt->side_data[i].data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
+ pkt->side_data[i].size = size;
+ pkt->side_data[i].type = p[4]&127;
+ if (!pkt->side_data[i].data)
+ return AVERROR(ENOMEM);
+ memcpy(pkt->side_data[i].data, p-size, size);
+ pkt->size -= size + 5;
+ if(p[4]&128)
+ break;
+ p-= size+5;
+ }
+ pkt->size -= 8;
+ pkt->side_data_elems = i+1;
+ return 1;
+ }
+ return 0;
+}
+
+uint8_t *av_packet_pack_dictionary(AVDictionary *dict, int *size)
+{
+ AVDictionaryEntry *t = NULL;
+ uint8_t *data = NULL;
+ *size = 0;
+
+ if (!dict)
+ return NULL;
+
+ while ((t = av_dict_get(dict, "", t, AV_DICT_IGNORE_SUFFIX))) {
+ const size_t keylen = strlen(t->key);
+ const size_t valuelen = strlen(t->value);
+ const size_t new_size = *size + keylen + 1 + valuelen + 1;
+ uint8_t *const new_data = av_realloc(data, new_size);
+
+ if (!new_data)
+ goto fail;
+ data = new_data;
+ if (new_size > INT_MAX)
+ goto fail;
+
+ memcpy(data + *size, t->key, keylen + 1);
+ memcpy(data + *size + keylen + 1, t->value, valuelen + 1);
+
+ *size = new_size;
+ }
+
+ return data;
+
+fail:
+ av_freep(&data);
+ *size = 0;
+ return NULL;
+}
+
+int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
+{
+ const uint8_t *end = data + size;
+ int ret = 0;
+
+ if (!dict || !data || !size)
+ return ret;
+ if (size && end[-1])
+ return AVERROR_INVALIDDATA;
+ while (data < end) {
+ const uint8_t *key = data;
+ const uint8_t *val = data + strlen(key) + 1;
+
+ if (val >= end)
+ return AVERROR_INVALIDDATA;
+
+ ret = av_dict_set(dict, key, val, 0);
+ if (ret < 0)
+ break;
+ data = val + strlen(val) + 1;
+ }
+
+ return ret;
+}
+
int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
int size)
{
pkt->size = 0;
}
-int av_packet_ref(AVPacket *dst, AVPacket *src)
+int av_packet_ref(AVPacket *dst, const AVPacket *src)
{
int ret;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
+
+int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
+{
+ uint8_t *side_data;
+ int side_data_size;
+ int i;
+
+ side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_STATS, &side_data_size);
+ if (!side_data) {
+ side_data_size = 4+4+8*error_count;
+ side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_QUALITY_STATS,
+ side_data_size);
+ }
+
+ if (!side_data || side_data_size < 4+4+8*error_count)
+ return AVERROR(ENOMEM);
+
+ AV_WL32(side_data , quality );
+ side_data[4] = pict_type;
+ side_data[5] = error_count;
+ for (i = 0; i<error_count; i++)
+ AV_WL64(side_data+8 + 8*i , error[i]);
+
+ return 0;
+}
projects / ffmpeg / blobdiff