chromium/SOURCES/chromium-131-el8-libavcodec-parser.patch

--- /dev/null	2024-11-22 07:51:33.845958571 +0100
+++ chromium-131.0.6778.85/third_party/ffmpeg/libavcodec/parser.h	2024-11-19 23:48:49.634320300 +0100
@@ -0,0 +1,58 @@
+/*
+ * AVCodecParser prototypes and definitions
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_PARSER_H
+#define AVCODEC_PARSER_H
+
+#include "avcodec.h"
+
+typedef struct ParseContext{
+    uint8_t *buffer;
+    int index;
+    int last_index;
+    unsigned int buffer_size;
+    uint32_t state;             ///< contains the last few bytes in MSB order
+    int frame_start_found;
+    int overread;               ///< the number of bytes which where irreversibly read from the next frame
+    int overread_index;         ///< the index into ParseContext.buffer of the overread bytes
+    uint64_t state64;           ///< contains the last 8 bytes in MSB order
+} ParseContext;
+
+#define END_NOT_FOUND (-100)
+
+/**
+ * Combine the (truncated) bitstream to a complete frame.
+ * @return -1 if no complete frame could be created,
+ *         AVERROR(ENOMEM) if there was a memory allocation error
+ */
+int ff_combine_frame(ParseContext *pc, int next, const uint8_t **buf, int *buf_size);
+void ff_parse_close(AVCodecParserContext *s);
+
+/**
+ * Fetch timestamps for a specific byte within the current access unit.
+ * @param off byte position within the access unit
+ * @param remove Found timestamps will be removed if set to 1, kept if set to 0.
+ * @param fuzzy Only use found value if it is more informative than what we already have
+ */
+void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove, int fuzzy);
+
+#endif /* AVCODEC_PARSER_H */
--- /dev/null	2024-11-22 07:51:33.845958571 +0100
+++ chromium-131.0.6778.85/third_party/ffmpeg/libavcodec/parser.c	2024-11-19 23:48:49.633320000 +0100
@@ -0,0 +1,295 @@
+/*
+ * Audio and Video frame extraction
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2003 Michael Niedermayer
+ *
+ * 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 <inttypes.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "libavutil/avassert.h"
+#include "libavutil/mem.h"
+
+#include "parser.h"
+
+AVCodecParserContext *av_parser_init(int codec_id)
+{
+    AVCodecParserContext *s = NULL;
+    const AVCodecParser *parser;
+    void *i = 0;
+    int ret;
+
+    if (codec_id == AV_CODEC_ID_NONE)
+        return NULL;
+
+    while ((parser = av_parser_iterate(&i))) {
+        if (parser->codec_ids[0] == codec_id ||
+            parser->codec_ids[1] == codec_id ||
+            parser->codec_ids[2] == codec_id ||
+            parser->codec_ids[3] == codec_id ||
+            parser->codec_ids[4] == codec_id ||
+            parser->codec_ids[5] == codec_id ||
+            parser->codec_ids[6] == codec_id)
+            goto found;
+    }
+    return NULL;
+
+found:
+    s = av_mallocz(sizeof(AVCodecParserContext));
+    if (!s)
+        goto err_out;
+    s->parser = parser;
+    s->priv_data = av_mallocz(parser->priv_data_size);
+    if (!s->priv_data)
+        goto err_out;
+    s->fetch_timestamp=1;
+    s->pict_type = AV_PICTURE_TYPE_I;
+    if (parser->parser_init) {
+        ret = parser->parser_init(s);
+        if (ret != 0)
+            goto err_out;
+    }
+    s->key_frame            = -1;
+    s->dts_sync_point       = INT_MIN;
+    s->dts_ref_dts_delta    = INT_MIN;
+    s->pts_dts_delta        = INT_MIN;
+    s->format               = -1;
+
+    return s;
+
+err_out:
+    if (s)
+        av_freep(&s->priv_data);
+    av_free(s);
+    return NULL;
+}
+
+void ff_fetch_timestamp(AVCodecParserContext *s, int off, int remove, int fuzzy)
+{
+    int i;
+
+    if (!fuzzy) {
+        s->dts    =
+        s->pts    = AV_NOPTS_VALUE;
+        s->pos    = -1;
+        s->offset = 0;
+    }
+    for (i = 0; i < AV_PARSER_PTS_NB; i++) {
+        if (s->cur_offset + off >= s->cur_frame_offset[i] &&
+            (s->frame_offset < s->cur_frame_offset[i] ||
+             (!s->frame_offset && !s->next_frame_offset)) && // first field/frame
+            // check disabled since MPEG-TS does not send complete PES packets
+            /*s->next_frame_offset + off <*/  s->cur_frame_end[i]){
+
+            if (!fuzzy || s->cur_frame_dts[i] != AV_NOPTS_VALUE) {
+                s->dts    = s->cur_frame_dts[i];
+                s->pts    = s->cur_frame_pts[i];
+                s->pos    = s->cur_frame_pos[i];
+                s->offset = s->next_frame_offset - s->cur_frame_offset[i];
+            }
+            if (remove)
+                s->cur_frame_offset[i] = INT64_MAX;
+            if (s->cur_offset + off < s->cur_frame_end[i])
+                break;
+        }
+    }
+}
+
+int av_parser_parse2(AVCodecParserContext *s, AVCodecContext *avctx,
+                     uint8_t **poutbuf, int *poutbuf_size,
+                     const uint8_t *buf, int buf_size,
+                     int64_t pts, int64_t dts, int64_t pos)
+{
+    int index, i;
+    uint8_t dummy_buf[AV_INPUT_BUFFER_PADDING_SIZE];
+
+    av_assert1(avctx->codec_id != AV_CODEC_ID_NONE);
+
+    /* Parsers only work for the specified codec ids. */
+    av_assert1(avctx->codec_id == s->parser->codec_ids[0] ||
+               avctx->codec_id == s->parser->codec_ids[1] ||
+               avctx->codec_id == s->parser->codec_ids[2] ||
+               avctx->codec_id == s->parser->codec_ids[3] ||
+               avctx->codec_id == s->parser->codec_ids[4] ||
+               avctx->codec_id == s->parser->codec_ids[5] ||
+               avctx->codec_id == s->parser->codec_ids[6]);
+
+    if (!(s->flags & PARSER_FLAG_FETCHED_OFFSET)) {
+        s->next_frame_offset =
+        s->cur_offset        = pos;
+        s->flags            |= PARSER_FLAG_FETCHED_OFFSET;
+    }
+
+    if (buf_size == 0) {
+        /* padding is always necessary even if EOF, so we add it here */
+        memset(dummy_buf, 0, sizeof(dummy_buf));
+        buf = dummy_buf;
+    } else if (s->cur_offset + buf_size != s->cur_frame_end[s->cur_frame_start_index]) { /* skip remainder packets */
+        /* add a new packet descriptor */
+        i = (s->cur_frame_start_index + 1) & (AV_PARSER_PTS_NB - 1);
+        s->cur_frame_start_index = i;
+        s->cur_frame_offset[i]   = s->cur_offset;
+        s->cur_frame_end[i]      = s->cur_offset + buf_size;
+        s->cur_frame_pts[i]      = pts;
+        s->cur_frame_dts[i]      = dts;
+        s->cur_frame_pos[i]      = pos;
+    }
+
+    if (s->fetch_timestamp) {
+        s->fetch_timestamp = 0;
+        s->last_pts        = s->pts;
+        s->last_dts        = s->dts;
+        s->last_pos        = s->pos;
+        ff_fetch_timestamp(s, 0, 0, 0);
+    }
+    /* WARNING: the returned index can be negative */
+    index = s->parser->parser_parse(s, avctx, (const uint8_t **) poutbuf,
+                                    poutbuf_size, buf, buf_size);
+    av_assert0(index > -0x20000000); // The API does not allow returning AVERROR codes
+#define FILL(name) if(s->name > 0 && avctx->name <= 0) avctx->name = s->name
+    if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+        FILL(field_order);
+        FILL(coded_width);
+        FILL(coded_height);
+        FILL(width);
+        FILL(height);
+    }
+
+    /* update the file pointer */
+    if (*poutbuf_size) {
+        /* fill the data for the current frame */
+        s->frame_offset = s->next_frame_offset;
+
+        /* offset of the next frame */
+        s->next_frame_offset = s->cur_offset + index;
+        s->fetch_timestamp   = 1;
+    } else {
+        /* Don't return a pointer to dummy_buf. */
+        *poutbuf = NULL;
+    }
+    if (index < 0)
+        index = 0;
+    s->cur_offset += index;
+    return index;
+}
+
+void av_parser_close(AVCodecParserContext *s)
+{
+    if (s) {
+        if (s->parser->parser_close)
+            s->parser->parser_close(s);
+        av_freep(&s->priv_data);
+        av_free(s);
+    }
+}
+
+int ff_combine_frame(ParseContext *pc, int next,
+                     const uint8_t **buf, int *buf_size)
+{
+    if (pc->overread) {
+        ff_dlog(NULL, "overread %d, state:%"PRIX32" next:%d index:%d o_index:%d\n",
+                pc->overread, pc->state, next, pc->index, pc->overread_index);
+        ff_dlog(NULL, "%X %X %X %X\n",
+                (*buf)[0], (*buf)[1], (*buf)[2], (*buf)[3]);
+    }
+
+    /* Copy overread bytes from last frame into buffer. */
+    for (; pc->overread > 0; pc->overread--)
+        pc->buffer[pc->index++] = pc->buffer[pc->overread_index++];
+
+    if (next > *buf_size)
+        return AVERROR(EINVAL);
+
+    /* flush remaining if EOF */
+    if (!*buf_size && next == END_NOT_FOUND)
+        next = 0;
+
+    pc->last_index = pc->index;
+
+    /* copy into buffer end return */
+    if (next == END_NOT_FOUND) {
+        void *new_buffer = av_fast_realloc(pc->buffer, &pc->buffer_size,
+                                           *buf_size + pc->index +
+                                           AV_INPUT_BUFFER_PADDING_SIZE);
+
+        if (!new_buffer) {
+            av_log(NULL, AV_LOG_ERROR, "Failed to reallocate parser buffer to %d\n", *buf_size + pc->index + AV_INPUT_BUFFER_PADDING_SIZE);
+            pc->index = 0;
+            return AVERROR(ENOMEM);
+        }
+        pc->buffer = new_buffer;
+        memcpy(&pc->buffer[pc->index], *buf, *buf_size);
+        memset(&pc->buffer[pc->index + *buf_size], 0, AV_INPUT_BUFFER_PADDING_SIZE);
+        pc->index += *buf_size;
+        return -1;
+    }
+
+    av_assert0(next >= 0 || pc->buffer);
+
+    *buf_size          =
+    pc->overread_index = pc->index + next;
+
+    /* append to buffer */
+    if (pc->index) {
+        void *new_buffer = av_fast_realloc(pc->buffer, &pc->buffer_size,
+                                           next + pc->index +
+                                           AV_INPUT_BUFFER_PADDING_SIZE);
+        if (!new_buffer) {
+            av_log(NULL, AV_LOG_ERROR, "Failed to reallocate parser buffer to %d\n", next + pc->index + AV_INPUT_BUFFER_PADDING_SIZE);
+            *buf_size =
+            pc->overread_index =
+            pc->index = 0;
+            return AVERROR(ENOMEM);
+        }
+        pc->buffer = new_buffer;
+        if (next > -AV_INPUT_BUFFER_PADDING_SIZE)
+            memcpy(&pc->buffer[pc->index], *buf,
+                   next + AV_INPUT_BUFFER_PADDING_SIZE);
+        pc->index = 0;
+        *buf      = pc->buffer;
+    }
+
+    if (next < -8) {
+        pc->overread += -8 - next;
+        next = -8;
+    }
+    /* store overread bytes */
+    for (; next < 0; next++) {
+        pc->state   = pc->state   << 8 | pc->buffer[pc->last_index + next];
+        pc->state64 = pc->state64 << 8 | pc->buffer[pc->last_index + next];
+        pc->overread++;
+    }
+
+    if (pc->overread) {
+        ff_dlog(NULL, "overread %d, state:%"PRIX32" next:%d index:%d o_index:%d\n",
+                pc->overread, pc->state, next, pc->index, pc->overread_index);
+        ff_dlog(NULL, "%X %X %X %X\n",
+                (*buf)[0], (*buf)[1], (*buf)[2], (*buf)[3]);
+    }
+
+    return 0;
+}
+
+void ff_parse_close(AVCodecParserContext *s)
+{
+    ParseContext *pc = s->priv_data;
+
+    av_freep(&pc->buffer);
+}
--- /dev/null	2024-11-22 07:51:33.845958571 +0100
+++ chromium-131.0.6778.85/third_party/ffmpeg/libavcodec/hevc/hevc.h	2024-11-19 23:48:49.494310400 +0100
@@ -0,0 +1,163 @@
+/*
+ * HEVC shared code
+ *
+ * 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
+ */
+
+#ifndef AVCODEC_HEVC_HEVC_H
+#define AVCODEC_HEVC_HEVC_H
+
+/**
+ * Table 7-1 – NAL unit type codes and NAL unit type classes in
+ * T-REC-H.265-201802
+ */
+enum HEVCNALUnitType {
+    HEVC_NAL_TRAIL_N        = 0,
+    HEVC_NAL_TRAIL_R        = 1,
+    HEVC_NAL_TSA_N          = 2,
+    HEVC_NAL_TSA_R          = 3,
+    HEVC_NAL_STSA_N         = 4,
+    HEVC_NAL_STSA_R         = 5,
+    HEVC_NAL_RADL_N         = 6,
+    HEVC_NAL_RADL_R         = 7,
+    HEVC_NAL_RASL_N         = 8,
+    HEVC_NAL_RASL_R         = 9,
+    HEVC_NAL_VCL_N10        = 10,
+    HEVC_NAL_VCL_R11        = 11,
+    HEVC_NAL_VCL_N12        = 12,
+    HEVC_NAL_VCL_R13        = 13,
+    HEVC_NAL_VCL_N14        = 14,
+    HEVC_NAL_VCL_R15        = 15,
+    HEVC_NAL_BLA_W_LP       = 16,
+    HEVC_NAL_BLA_W_RADL     = 17,
+    HEVC_NAL_BLA_N_LP       = 18,
+    HEVC_NAL_IDR_W_RADL     = 19,
+    HEVC_NAL_IDR_N_LP       = 20,
+    HEVC_NAL_CRA_NUT        = 21,
+    HEVC_NAL_RSV_IRAP_VCL22 = 22,
+    HEVC_NAL_RSV_IRAP_VCL23 = 23,
+    HEVC_NAL_RSV_VCL24      = 24,
+    HEVC_NAL_RSV_VCL25      = 25,
+    HEVC_NAL_RSV_VCL26      = 26,
+    HEVC_NAL_RSV_VCL27      = 27,
+    HEVC_NAL_RSV_VCL28      = 28,
+    HEVC_NAL_RSV_VCL29      = 29,
+    HEVC_NAL_RSV_VCL30      = 30,
+    HEVC_NAL_RSV_VCL31      = 31,
+    HEVC_NAL_VPS            = 32,
+    HEVC_NAL_SPS            = 33,
+    HEVC_NAL_PPS            = 34,
+    HEVC_NAL_AUD            = 35,
+    HEVC_NAL_EOS_NUT        = 36,
+    HEVC_NAL_EOB_NUT        = 37,
+    HEVC_NAL_FD_NUT         = 38,
+    HEVC_NAL_SEI_PREFIX     = 39,
+    HEVC_NAL_SEI_SUFFIX     = 40,
+    HEVC_NAL_RSV_NVCL41     = 41,
+    HEVC_NAL_RSV_NVCL42     = 42,
+    HEVC_NAL_RSV_NVCL43     = 43,
+    HEVC_NAL_RSV_NVCL44     = 44,
+    HEVC_NAL_RSV_NVCL45     = 45,
+    HEVC_NAL_RSV_NVCL46     = 46,
+    HEVC_NAL_RSV_NVCL47     = 47,
+    HEVC_NAL_UNSPEC48       = 48,
+    HEVC_NAL_UNSPEC49       = 49,
+    HEVC_NAL_UNSPEC50       = 50,
+    HEVC_NAL_UNSPEC51       = 51,
+    HEVC_NAL_UNSPEC52       = 52,
+    HEVC_NAL_UNSPEC53       = 53,
+    HEVC_NAL_UNSPEC54       = 54,
+    HEVC_NAL_UNSPEC55       = 55,
+    HEVC_NAL_UNSPEC56       = 56,
+    HEVC_NAL_UNSPEC57       = 57,
+    HEVC_NAL_UNSPEC58       = 58,
+    HEVC_NAL_UNSPEC59       = 59,
+    HEVC_NAL_UNSPEC60       = 60,
+    HEVC_NAL_UNSPEC61       = 61,
+    HEVC_NAL_UNSPEC62       = 62,
+    HEVC_NAL_UNSPEC63       = 63,
+};
+
+enum HEVCSliceType {
+    HEVC_SLICE_B = 0,
+    HEVC_SLICE_P = 1,
+    HEVC_SLICE_I = 2,
+};
+
+enum {
+    // 7.4.3.1: vps_max_layers_minus1 is in [0, 62].
+    HEVC_MAX_LAYERS     = 63,
+    // 7.4.3.1: vps_max_sub_layers_minus1 is in [0, 6].
+    HEVC_MAX_SUB_LAYERS = 7,
+    // 7.4.3.1: vps_num_layer_sets_minus1 is in [0, 1023].
+    HEVC_MAX_LAYER_SETS = 1024,
+
+    // 7.4.2.1: vps_video_parameter_set_id is u(4).
+    HEVC_MAX_VPS_COUNT = 16,
+    // 7.4.3.2.1: sps_seq_parameter_set_id is in [0, 15].
+    HEVC_MAX_SPS_COUNT = 16,
+    // 7.4.3.3.1: pps_pic_parameter_set_id is in [0, 63].
+    HEVC_MAX_PPS_COUNT = 64,
+
+    // A.4.2: MaxDpbSize is bounded above by 16.
+    HEVC_MAX_DPB_SIZE = 16,
+    // 7.4.3.1: vps_max_dec_pic_buffering_minus1[i] is in [0, MaxDpbSize - 1].
+    HEVC_MAX_REFS     = HEVC_MAX_DPB_SIZE,
+
+    // 7.4.3.2.1: num_short_term_ref_pic_sets is in [0, 64].
+    HEVC_MAX_SHORT_TERM_REF_PIC_SETS = 64,
+    // 7.4.3.2.1: num_long_term_ref_pics_sps is in [0, 32].
+    HEVC_MAX_LONG_TERM_REF_PICS      = 32,
+
+    // A.3: all profiles require that CtbLog2SizeY is in [4, 6].
+    HEVC_MIN_LOG2_CTB_SIZE = 4,
+    HEVC_MAX_LOG2_CTB_SIZE = 6,
+
+    // E.3.2: cpb_cnt_minus1[i] is in [0, 31].
+    HEVC_MAX_CPB_CNT = 32,
+
+    // A.4.1: in table A.6 the highest level allows a MaxLumaPs of 35 651 584.
+    HEVC_MAX_LUMA_PS = 35651584,
+    // A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are
+    // constrained to be not greater than sqrt(MaxLumaPs * 8).  Hence height/
+    // width are bounded above by sqrt(8 * 35651584) = 16888.2 samples.
+    HEVC_MAX_WIDTH  = 16888,
+    HEVC_MAX_HEIGHT = 16888,
+
+    // A.4.1: table A.6 allows at most 22 tile rows for any level.
+    HEVC_MAX_TILE_ROWS    = 22,
+    // A.4.1: table A.6 allows at most 20 tile columns for any level.
+    HEVC_MAX_TILE_COLUMNS = 20,
+
+    // A.4.2: table A.6 allows at most 600 slice segments for any level.
+    HEVC_MAX_SLICE_SEGMENTS = 600,
+
+    // 7.4.7.1: in the worst case (tiles_enabled_flag and
+    // entropy_coding_sync_enabled_flag are both set), entry points can be
+    // placed at the beginning of every Ctb row in every tile, giving an
+    // upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1.
+    // Only a stream with very high resolution and perverse parameters could
+    // get near that, though, so set a lower limit here with the maximum
+    // possible value for 4K video (at most 135 16x16 Ctb rows).
+    HEVC_MAX_ENTRY_POINT_OFFSETS = HEVC_MAX_TILE_COLUMNS * 135,
+
+    // A.3.7: Screen content coding extensions
+    HEVC_MAX_PALETTE_PREDICTOR_SIZE = 128,
+};
+
+
+#endif /* AVCODEC_HEVC_HEVC_H */