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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /media/ffvpx/libavcodec/avpacket.c
parentInitial commit. (diff)
downloadfirefox-esr-upstream.tar.xz
firefox-esr-upstream.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/ffvpx/libavcodec/avpacket.c')
-rw-r--r--media/ffvpx/libavcodec/avpacket.c647
1 files changed, 647 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/avpacket.c b/media/ffvpx/libavcodec/avpacket.c
new file mode 100644
index 0000000000..5fef65e97a
--- /dev/null
+++ b/media/ffvpx/libavcodec/avpacket.c
@@ -0,0 +1,647 @@
+/*
+ * AVPacket functions for libavcodec
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * 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.
+ *
+ * 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <string.h>
+
+#include "libavutil/avassert.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/mem.h"
+#include "libavutil/rational.h"
+
+#include "defs.h"
+#include "packet.h"
+#include "packet_internal.h"
+
+#if FF_API_INIT_PACKET
+void av_init_packet(AVPacket *pkt)
+{
+ pkt->pts = AV_NOPTS_VALUE;
+ pkt->dts = AV_NOPTS_VALUE;
+ pkt->pos = -1;
+ pkt->duration = 0;
+ pkt->flags = 0;
+ pkt->stream_index = 0;
+ pkt->buf = NULL;
+ pkt->side_data = NULL;
+ pkt->side_data_elems = 0;
+ pkt->opaque = NULL;
+ pkt->opaque_ref = NULL;
+ pkt->time_base = av_make_q(0, 1);
+}
+#endif
+
+static void get_packet_defaults(AVPacket *pkt)
+{
+ memset(pkt, 0, sizeof(*pkt));
+
+ pkt->pts = AV_NOPTS_VALUE;
+ pkt->dts = AV_NOPTS_VALUE;
+ pkt->pos = -1;
+ pkt->time_base = av_make_q(0, 1);
+}
+
+AVPacket *av_packet_alloc(void)
+{
+ AVPacket *pkt = av_malloc(sizeof(AVPacket));
+ if (!pkt)
+ return pkt;
+
+ get_packet_defaults(pkt);
+
+ return pkt;
+}
+
+void av_packet_free(AVPacket **pkt)
+{
+ if (!pkt || !*pkt)
+ return;
+
+ av_packet_unref(*pkt);
+ av_freep(pkt);
+}
+
+static int packet_alloc(AVBufferRef **buf, int size)
+{
+ int ret;
+ if (size < 0 || size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
+ return AVERROR(EINVAL);
+
+ ret = av_buffer_realloc(buf, size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (ret < 0)
+ return ret;
+
+ memset((*buf)->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
+
+ return 0;
+}
+
+int av_new_packet(AVPacket *pkt, int size)
+{
+ AVBufferRef *buf = NULL;
+ int ret = packet_alloc(&buf, size);
+ if (ret < 0)
+ return ret;
+
+ get_packet_defaults(pkt);
+ pkt->buf = buf;
+ pkt->data = buf->data;
+ pkt->size = size;
+
+ return 0;
+}
+
+void av_shrink_packet(AVPacket *pkt, int size)
+{
+ if (pkt->size <= size)
+ return;
+ pkt->size = size;
+ memset(pkt->data + size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
+}
+
+int av_grow_packet(AVPacket *pkt, int grow_by)
+{
+ int new_size;
+ av_assert0((unsigned)pkt->size <= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
+ if ((unsigned)grow_by >
+ INT_MAX - (pkt->size + AV_INPUT_BUFFER_PADDING_SIZE))
+ return AVERROR(ENOMEM);
+
+ new_size = pkt->size + grow_by + AV_INPUT_BUFFER_PADDING_SIZE;
+ if (pkt->buf) {
+ size_t data_offset;
+ uint8_t *old_data = pkt->data;
+ if (pkt->data == NULL) {
+ data_offset = 0;
+ pkt->data = pkt->buf->data;
+ } else {
+ data_offset = pkt->data - pkt->buf->data;
+ if (data_offset > INT_MAX - new_size)
+ return AVERROR(ENOMEM);
+ }
+
+ if (new_size + data_offset > pkt->buf->size ||
+ !av_buffer_is_writable(pkt->buf)) {
+ int ret;
+
+ // allocate slightly more than requested to avoid excessive
+ // reallocations
+ if (new_size + data_offset < INT_MAX - new_size/16)
+ new_size += new_size/16;
+
+ ret = av_buffer_realloc(&pkt->buf, new_size + data_offset);
+ if (ret < 0) {
+ pkt->data = old_data;
+ return ret;
+ }
+ pkt->data = pkt->buf->data + data_offset;
+ }
+ } else {
+ pkt->buf = av_buffer_alloc(new_size);
+ if (!pkt->buf)
+ return AVERROR(ENOMEM);
+ if (pkt->size > 0)
+ memcpy(pkt->buf->data, pkt->data, pkt->size);
+ pkt->data = pkt->buf->data;
+ }
+ pkt->size += grow_by;
+ memset(pkt->data + pkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
+
+ return 0;
+}
+
+int av_packet_from_data(AVPacket *pkt, uint8_t *data, int size)
+{
+ if (size >= INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
+ return AVERROR(EINVAL);
+
+ pkt->buf = av_buffer_create(data, size + AV_INPUT_BUFFER_PADDING_SIZE,
+ av_buffer_default_free, NULL, 0);
+ if (!pkt->buf)
+ return AVERROR(ENOMEM);
+
+ pkt->data = data;
+ pkt->size = size;
+
+ return 0;
+}
+
+void av_packet_free_side_data(AVPacket *pkt)
+{
+ int i;
+ for (i = 0; i < pkt->side_data_elems; i++)
+ av_freep(&pkt->side_data[i].data);
+ av_freep(&pkt->side_data);
+ pkt->side_data_elems = 0;
+}
+
+int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+ uint8_t *data, size_t size)
+{
+ AVPacketSideData *tmp;
+ int i, elems = pkt->side_data_elems;
+
+ for (i = 0; i < elems; i++) {
+ AVPacketSideData *sd = &pkt->side_data[i];
+
+ if (sd->type == type) {
+ av_free(sd->data);
+ sd->data = data;
+ sd->size = size;
+ return 0;
+ }
+ }
+
+ if ((unsigned)elems + 1 > AV_PKT_DATA_NB)
+ return AVERROR(ERANGE);
+
+ tmp = av_realloc(pkt->side_data, (elems + 1) * sizeof(*tmp));
+ if (!tmp)
+ return AVERROR(ENOMEM);
+
+ pkt->side_data = tmp;
+ pkt->side_data[elems].data = data;
+ pkt->side_data[elems].size = size;
+ pkt->side_data[elems].type = type;
+ pkt->side_data_elems++;
+
+ return 0;
+}
+
+
+uint8_t *av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+ size_t size)
+{
+ int ret;
+ uint8_t *data;
+
+ if (size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE)
+ return NULL;
+ data = av_mallocz(size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!data)
+ return NULL;
+
+ ret = av_packet_add_side_data(pkt, type, data, size);
+ if (ret < 0) {
+ av_freep(&data);
+ return NULL;
+ }
+
+ return data;
+}
+
+uint8_t *av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type,
+ size_t *size)
+{
+ int i;
+
+ for (i = 0; i < pkt->side_data_elems; i++) {
+ if (pkt->side_data[i].type == type) {
+ if (size)
+ *size = pkt->side_data[i].size;
+ return pkt->side_data[i].data;
+ }
+ }
+ if (size)
+ *size = 0;
+ 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_QUALITY_STATS: return "Quality stats";
+ case AV_PKT_DATA_FALLBACK_TRACK: return "Fallback track";
+ case AV_PKT_DATA_CPB_PROPERTIES: return "CPB properties";
+ 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";
+ case AV_PKT_DATA_MPEGTS_STREAM_ID: return "MPEGTS Stream ID";
+ case AV_PKT_DATA_MASTERING_DISPLAY_METADATA: return "Mastering display metadata";
+ case AV_PKT_DATA_CONTENT_LIGHT_LEVEL: return "Content light level metadata";
+ case AV_PKT_DATA_SPHERICAL: return "Spherical Mapping";
+ case AV_PKT_DATA_A53_CC: return "A53 Closed Captions";
+ case AV_PKT_DATA_ENCRYPTION_INIT_INFO: return "Encryption initialization data";
+ case AV_PKT_DATA_ENCRYPTION_INFO: return "Encryption info";
+ case AV_PKT_DATA_AFD: return "Active Format Description data";
+ case AV_PKT_DATA_PRFT: return "Producer Reference Time";
+ case AV_PKT_DATA_ICC_PROFILE: return "ICC Profile";
+ case AV_PKT_DATA_DOVI_CONF: return "DOVI configuration record";
+ case AV_PKT_DATA_S12M_TIMECODE: return "SMPTE ST 12-1:2014 timecode";
+ case AV_PKT_DATA_DYNAMIC_HDR10_PLUS: return "HDR10+ Dynamic Metadata (SMPTE 2094-40)";
+ }
+ return NULL;
+}
+
+uint8_t *av_packet_pack_dictionary(AVDictionary *dict, size_t *size)
+{
+ uint8_t *data = NULL;
+ *size = 0;
+
+ if (!dict)
+ return NULL;
+
+ for (int pass = 0; pass < 2; pass++) {
+ const AVDictionaryEntry *t = NULL;
+ size_t total_length = 0;
+
+ while ((t = av_dict_iterate(dict, t))) {
+ for (int i = 0; i < 2; i++) {
+ const char *str = i ? t->value : t->key;
+ const size_t len = strlen(str) + 1;
+
+ if (pass)
+ memcpy(data + total_length, str, len);
+ else if (len > SIZE_MAX - total_length)
+ return NULL;
+ total_length += len;
+ }
+ }
+ if (pass)
+ break;
+ data = av_malloc(total_length);
+ if (!data)
+ return NULL;
+ *size = total_length;
+ }
+
+ return data;
+}
+
+int av_packet_unpack_dictionary(const uint8_t *data, size_t size,
+ AVDictionary **dict)
+{
+ const uint8_t *end;
+ int ret;
+
+ if (!dict || !data || !size)
+ return 0;
+ end = data + size;
+ 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 || !*key)
+ return AVERROR_INVALIDDATA;
+
+ ret = av_dict_set(dict, key, val, 0);
+ if (ret < 0)
+ return ret;
+ data = val + strlen(val) + 1;
+ }
+
+ return 0;
+}
+
+int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+ size_t size)
+{
+ int i;
+
+ for (i = 0; i < pkt->side_data_elems; i++) {
+ if (pkt->side_data[i].type == type) {
+ if (size > pkt->side_data[i].size)
+ return AVERROR(ENOMEM);
+ pkt->side_data[i].size = size;
+ return 0;
+ }
+ }
+ return AVERROR(ENOENT);
+}
+
+int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
+{
+ int i, ret;
+
+ dst->pts = src->pts;
+ dst->dts = src->dts;
+ dst->pos = src->pos;
+ dst->duration = src->duration;
+ dst->flags = src->flags;
+ dst->stream_index = src->stream_index;
+ dst->opaque = src->opaque;
+ dst->time_base = src->time_base;
+ dst->opaque_ref = NULL;
+ dst->side_data = NULL;
+ dst->side_data_elems = 0;
+
+ ret = av_buffer_replace(&dst->opaque_ref, src->opaque_ref);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < src->side_data_elems; i++) {
+ enum AVPacketSideDataType type = src->side_data[i].type;
+ size_t size = src->side_data[i].size;
+ uint8_t *src_data = src->side_data[i].data;
+ uint8_t *dst_data = av_packet_new_side_data(dst, type, size);
+
+ if (!dst_data) {
+ av_buffer_unref(&dst->opaque_ref);
+ av_packet_free_side_data(dst);
+ return AVERROR(ENOMEM);
+ }
+ memcpy(dst_data, src_data, size);
+ }
+
+ return 0;
+}
+
+void av_packet_unref(AVPacket *pkt)
+{
+ av_packet_free_side_data(pkt);
+ av_buffer_unref(&pkt->opaque_ref);
+ av_buffer_unref(&pkt->buf);
+ get_packet_defaults(pkt);
+}
+
+int av_packet_ref(AVPacket *dst, const AVPacket *src)
+{
+ int ret;
+
+ dst->buf = NULL;
+
+ ret = av_packet_copy_props(dst, src);
+ if (ret < 0)
+ goto fail;
+
+ if (!src->buf) {
+ ret = packet_alloc(&dst->buf, src->size);
+ if (ret < 0)
+ goto fail;
+ av_assert1(!src->size || src->data);
+ if (src->size)
+ memcpy(dst->buf->data, src->data, src->size);
+
+ dst->data = dst->buf->data;
+ } else {
+ dst->buf = av_buffer_ref(src->buf);
+ if (!dst->buf) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ dst->data = src->data;
+ }
+
+ dst->size = src->size;
+
+ return 0;
+fail:
+ av_packet_unref(dst);
+ return ret;
+}
+
+AVPacket *av_packet_clone(const AVPacket *src)
+{
+ AVPacket *ret = av_packet_alloc();
+
+ if (!ret)
+ return ret;
+
+ if (av_packet_ref(ret, src))
+ av_packet_free(&ret);
+
+ return ret;
+}
+
+void av_packet_move_ref(AVPacket *dst, AVPacket *src)
+{
+ *dst = *src;
+ get_packet_defaults(src);
+}
+
+int av_packet_make_refcounted(AVPacket *pkt)
+{
+ int ret;
+
+ if (pkt->buf)
+ return 0;
+
+ ret = packet_alloc(&pkt->buf, pkt->size);
+ if (ret < 0)
+ return ret;
+ av_assert1(!pkt->size || pkt->data);
+ if (pkt->size)
+ memcpy(pkt->buf->data, pkt->data, pkt->size);
+
+ pkt->data = pkt->buf->data;
+
+ return 0;
+}
+
+int av_packet_make_writable(AVPacket *pkt)
+{
+ AVBufferRef *buf = NULL;
+ int ret;
+
+ if (pkt->buf && av_buffer_is_writable(pkt->buf))
+ return 0;
+
+ ret = packet_alloc(&buf, pkt->size);
+ if (ret < 0)
+ return ret;
+ av_assert1(!pkt->size || pkt->data);
+ if (pkt->size)
+ memcpy(buf->data, pkt->data, pkt->size);
+
+ av_buffer_unref(&pkt->buf);
+ pkt->buf = buf;
+ pkt->data = buf->data;
+
+ return 0;
+}
+
+void av_packet_rescale_ts(AVPacket *pkt, AVRational src_tb, AVRational dst_tb)
+{
+ if (pkt->pts != AV_NOPTS_VALUE)
+ pkt->pts = av_rescale_q(pkt->pts, src_tb, dst_tb);
+ if (pkt->dts != AV_NOPTS_VALUE)
+ pkt->dts = av_rescale_q(pkt->dts, src_tb, dst_tb);
+ if (pkt->duration > 0)
+ pkt->duration = av_rescale_q(pkt->duration, src_tb, dst_tb);
+}
+
+int avpriv_packet_list_put(PacketList *packet_buffer,
+ AVPacket *pkt,
+ int (*copy)(AVPacket *dst, const AVPacket *src),
+ int flags)
+{
+ PacketListEntry *pktl = av_malloc(sizeof(*pktl));
+ int ret;
+
+ if (!pktl)
+ return AVERROR(ENOMEM);
+
+ if (copy) {
+ get_packet_defaults(&pktl->pkt);
+ ret = copy(&pktl->pkt, pkt);
+ if (ret < 0) {
+ av_free(pktl);
+ return ret;
+ }
+ } else {
+ ret = av_packet_make_refcounted(pkt);
+ if (ret < 0) {
+ av_free(pktl);
+ return ret;
+ }
+ av_packet_move_ref(&pktl->pkt, pkt);
+ }
+
+ pktl->next = NULL;
+
+ if (packet_buffer->head)
+ packet_buffer->tail->next = pktl;
+ else
+ packet_buffer->head = pktl;
+
+ /* Add the packet in the buffered packet list. */
+ packet_buffer->tail = pktl;
+ return 0;
+}
+
+int avpriv_packet_list_get(PacketList *pkt_buffer,
+ AVPacket *pkt)
+{
+ PacketListEntry *pktl = pkt_buffer->head;
+ if (!pktl)
+ return AVERROR(EAGAIN);
+ *pkt = pktl->pkt;
+ pkt_buffer->head = pktl->next;
+ if (!pkt_buffer->head)
+ pkt_buffer->tail = NULL;
+ av_freep(&pktl);
+ return 0;
+}
+
+void avpriv_packet_list_free(PacketList *pkt_buf)
+{
+ PacketListEntry *tmp = pkt_buf->head;
+
+ while (tmp) {
+ PacketListEntry *pktl = tmp;
+ tmp = pktl->next;
+ av_packet_unref(&pktl->pkt);
+ av_freep(&pktl);
+ }
+ pkt_buf->head = pkt_buf->tail = NULL;
+}
+
+int ff_side_data_set_encoder_stats(AVPacket *pkt, int quality, int64_t *error, int error_count, int pict_type)
+{
+ uint8_t *side_data;
+ size_t 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;
+}
+
+int ff_side_data_set_prft(AVPacket *pkt, int64_t timestamp)
+{
+ AVProducerReferenceTime *prft;
+ uint8_t *side_data;
+ size_t side_data_size;
+
+ side_data = av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
+ if (!side_data) {
+ side_data_size = sizeof(AVProducerReferenceTime);
+ side_data = av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT, side_data_size);
+ }
+
+ if (!side_data || side_data_size < sizeof(AVProducerReferenceTime))
+ return AVERROR(ENOMEM);
+
+ prft = (AVProducerReferenceTime *)side_data;
+ prft->wallclock = timestamp;
+ prft->flags = 0;
+
+ return 0;
+}