h264_parser: move the H264DSPContext to the parser context
[ffmpeg.git] / libavcodec / h264_parser.c
index a0308b0..d62eb73 100644 (file)
  * @author Michael Niedermayer <michaelni@gmx.at>
  */
 
-#include "libavutil/attributes.h"
-#include "parser.h"
-#include "h264data.h"
+#include <assert.h>
+#include <stdint.h>
+
+#include "libavutil/avutil.h"
+#include "libavutil/error.h"
+#include "libavutil/log.h"
+#include "libavutil/mem.h"
+#include "libavutil/pixfmt.h"
+
+#include "get_bits.h"
 #include "golomb.h"
+#include "h264.h"
+#include "h264data.h"
 #include "internal.h"
 #include "mpegutils.h"
-
-#include <assert.h>
+#include "parser.h"
 
 typedef struct H264ParseContext {
     H264Context h;
     ParseContext pc;
+    H264ParamSets ps;
+    H264DSPContext h264dsp;
     int got_first;
 } H264ParseContext;
 
@@ -44,7 +54,6 @@ typedef struct H264ParseContext {
 static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
                                int buf_size)
 {
-    H264Context *h = &p->h;
     int i;
     uint32_t state;
     ParseContext *pc = &p->pc;
@@ -55,7 +64,7 @@ static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
 
     for (i = 0; i < buf_size; i++) {
         if (state == 7) {
-            i += h->h264dsp.startcode_find_candidate(buf + i, buf_size - i);
+            i += p->h264dsp.startcode_find_candidate(buf + i, buf_size - i);
             if (i < buf_size)
                 state = 2;
         } else if (state <= 2) {
@@ -83,6 +92,7 @@ static int h264_find_frame_end(H264ParseContext *p, const uint8_t *buf,
             }
             state = 7;
         } else {
+            // first_mb_in_slice is 0, probably the first nal of a new slice
             if (buf[i] & 0x80)
                 goto found;
             state = 7;
@@ -97,29 +107,35 @@ found:
     return i - (state & 5);
 }
 
-static int scan_mmco_reset(AVCodecParserContext *s)
+static int scan_mmco_reset(AVCodecParserContext *s, GetBitContext *gb)
 {
+    H264PredWeightTable pwt;
+    int slice_type_nos = s->pict_type & 3;
     H264ParseContext *p = s->priv_data;
     H264Context      *h = &p->h;
+    int list_count, ref_count[2];
 
-    h->slice_type_nos = s->pict_type & 3;
 
-    if (h->pps.redundant_pic_cnt_present)
-        get_ue_golomb(&h->gb); // redundant_pic_count
+    if (p->ps.pps->redundant_pic_cnt_present)
+        get_ue_golomb(gb); // redundant_pic_count
 
-    if (ff_set_ref_count(h) < 0)
+    if (slice_type_nos == AV_PICTURE_TYPE_B)
+        get_bits1(gb); // direct_spatial_mv_pred
+
+    if (ff_h264_parse_ref_count(&list_count, ref_count, gb, p->ps.pps,
+                                slice_type_nos, h->picture_structure) < 0)
         return AVERROR_INVALIDDATA;
 
-    if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
+    if (slice_type_nos != AV_PICTURE_TYPE_I) {
         int list;
-        for (list = 0; list < h->list_count; list++) {
-            if (get_bits1(&h->gb)) {
+        for (list = 0; list < list_count; list++) {
+            if (get_bits1(gb)) {
                 int index;
                 for (index = 0; ; index++) {
-                    unsigned int reordering_of_pic_nums_idc = get_ue_golomb_31(&h->gb);
+                    unsigned int reordering_of_pic_nums_idc = get_ue_golomb_31(gb);
 
                     if (reordering_of_pic_nums_idc < 3)
-                        get_ue_golomb(&h->gb);
+                        get_ue_golomb(gb);
                     else if (reordering_of_pic_nums_idc > 3) {
                         av_log(h->avctx, AV_LOG_ERROR,
                                "illegal reordering_of_pic_nums_idc %d\n",
@@ -128,7 +144,7 @@ static int scan_mmco_reset(AVCodecParserContext *s)
                     } else
                         break;
 
-                    if (index >= h->ref_count[list]) {
+                    if (index >= ref_count[list]) {
                         av_log(h->avctx, AV_LOG_ERROR,
                                "reference count %d overflow\n", index);
                         return AVERROR_INVALIDDATA;
@@ -138,14 +154,15 @@ static int scan_mmco_reset(AVCodecParserContext *s)
         }
     }
 
-    if ((h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P) ||
-        (h->pps.weighted_bipred_idc == 1 && h->slice_type_nos == AV_PICTURE_TYPE_B))
-        ff_pred_weight_table(h);
+    if ((p->ps.pps->weighted_pred && slice_type_nos == AV_PICTURE_TYPE_P) ||
+        (p->ps.pps->weighted_bipred_idc == 1 && slice_type_nos == AV_PICTURE_TYPE_B))
+        ff_h264_pred_weight_table(gb, p->ps.sps, ref_count, slice_type_nos,
+                                  &pwt);
 
-    if (get_bits1(&h->gb)) { // adaptive_ref_pic_marking_mode_flag
+    if (get_bits1(gb)) { // adaptive_ref_pic_marking_mode_flag
         int i;
         for (i = 0; i < MAX_MMCO_COUNT; i++) {
-            MMCOOpcode opcode = get_ue_golomb_31(&h->gb);
+            MMCOOpcode opcode = get_ue_golomb_31(gb);
             if (opcode > (unsigned) MMCO_LONG) {
                 av_log(h->avctx, AV_LOG_ERROR,
                        "illegal memory management control operation %d\n",
@@ -158,10 +175,10 @@ static int scan_mmco_reset(AVCodecParserContext *s)
                 return 1;
 
             if (opcode == MMCO_SHORT2UNUSED || opcode == MMCO_SHORT2LONG)
-                get_ue_golomb(&h->gb);
+                get_ue_golomb(gb);
             if (opcode == MMCO_SHORT2LONG || opcode == MMCO_LONG2UNUSED ||
                 opcode == MMCO_LONG || opcode == MMCO_SET_MAX_LONG)
-                get_ue_golomb_31(&h->gb);
+                get_ue_golomb_31(gb);
         }
     }
 
@@ -183,11 +200,14 @@ static inline int parse_nal_units(AVCodecParserContext *s,
     H264ParseContext *p = s->priv_data;
     H264Context      *h = &p->h;
     const uint8_t *buf_end = buf + buf_size;
+
+    H2645NAL nal = { NULL };
+
     unsigned int pps_id;
     unsigned int slice_type;
     int state = -1, got_reset = 0;
-    const uint8_t *ptr;
     int field_poc[2];
+    int ret;
 
     /* set some sane default values */
     s->pict_type         = AV_PICTURE_TYPE_I;
@@ -201,7 +221,8 @@ static inline int parse_nal_units(AVCodecParserContext *s,
         return 0;
 
     for (;;) {
-        int src_length, dst_length, consumed;
+        const SPS *sps;
+        int src_length, consumed;
         buf = avpriv_find_start_code(buf, buf_end, &state);
         if (buf >= buf_end)
             break;
@@ -223,17 +244,29 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             }
             break;
         }
-        ptr = ff_h264_decode_nal(h, buf, &dst_length, &consumed, src_length);
-        if (!ptr || dst_length < 0)
+
+        consumed = ff_h2645_extract_rbsp(buf, src_length, &nal);
+        if (consumed < 0)
             break;
 
-        init_get_bits(&h->gb, ptr, 8 * dst_length);
+        ret = init_get_bits(&nal.gb, nal.data, nal.size * 8);
+        if (ret < 0)
+            goto fail;
+        get_bits1(&nal.gb);
+        nal.ref_idc = get_bits(&nal.gb, 2);
+        nal.type    = get_bits(&nal.gb, 5);
+
+        h->gb            = nal.gb;
+        h->nal_ref_idc   = nal.ref_idc;
+        h->nal_unit_type = nal.type;
+
         switch (h->nal_unit_type) {
         case NAL_SPS:
-            ff_h264_decode_seq_parameter_set(h);
+            ff_h264_decode_seq_parameter_set(&nal.gb, avctx, &p->ps);
             break;
         case NAL_PPS:
-            ff_h264_decode_picture_parameter_set(h, h->gb.size_in_bits);
+            ff_h264_decode_picture_parameter_set(&nal.gb, avctx, &p->ps,
+                                                 nal.size_bits);
             break;
         case NAL_SEI:
             ff_h264_decode_sei(h);
@@ -247,63 +280,97 @@ static inline int parse_nal_units(AVCodecParserContext *s,
             h->prev_poc_lsb          = 0;
         /* fall through */
         case NAL_SLICE:
-            get_ue_golomb(&h->gb);  // skip first_mb_in_slice
-            slice_type   = get_ue_golomb_31(&h->gb);
-            s->pict_type = golomb_to_pict_type[slice_type % 5];
+            get_ue_golomb(&nal.gb);  // skip first_mb_in_slice
+            slice_type   = get_ue_golomb_31(&nal.gb);
+            s->pict_type = ff_h264_golomb_to_pict_type[slice_type % 5];
             if (h->sei_recovery_frame_cnt >= 0) {
                 /* key frame, since recovery_frame_cnt is set */
                 s->key_frame = 1;
             }
-            pps_id = get_ue_golomb(&h->gb);
+            pps_id = get_ue_golomb(&nal.gb);
             if (pps_id >= MAX_PPS_COUNT) {
                 av_log(h->avctx, AV_LOG_ERROR,
                        "pps_id %u out of range\n", pps_id);
-                return -1;
+                goto fail;
             }
-            if (!h->pps_buffers[pps_id]) {
+            if (!p->ps.pps_list[pps_id]) {
                 av_log(h->avctx, AV_LOG_ERROR,
                        "non-existing PPS %u referenced\n", pps_id);
-                return -1;
+                goto fail;
             }
-            h->pps = *h->pps_buffers[pps_id];
-            if (!h->sps_buffers[h->pps.sps_id]) {
+            p->ps.pps = (const PPS*)p->ps.pps_list[pps_id]->data;
+            if (!p->ps.sps_list[p->ps.pps->sps_id]) {
                 av_log(h->avctx, AV_LOG_ERROR,
-                       "non-existing SPS %u referenced\n", h->pps.sps_id);
-                return -1;
+                       "non-existing SPS %u referenced\n", p->ps.pps->sps_id);
+                goto fail;
+            }
+            p->ps.sps = (SPS*)p->ps.sps_list[p->ps.pps->sps_id]->data;
+
+            h->ps.sps = p->ps.sps;
+            h->ps.pps = p->ps.pps;
+            sps = p->ps.sps;
+
+            h->frame_num = get_bits(&nal.gb, sps->log2_max_frame_num);
+
+            s->coded_width  = 16 * sps->mb_width;
+            s->coded_height = 16 * sps->mb_height;
+            s->width        = s->coded_width  - (sps->crop_right + sps->crop_left);
+            s->height       = s->coded_height - (sps->crop_top   + sps->crop_bottom);
+            if (s->width <= 0 || s->height <= 0) {
+                s->width  = s->coded_width;
+                s->height = s->coded_height;
+            }
+
+            switch (sps->bit_depth_luma) {
+            case 9:
+                if (CHROMA444(h))      s->format = AV_PIX_FMT_YUV444P9;
+                else if (CHROMA422(h)) s->format = AV_PIX_FMT_YUV422P9;
+                else                   s->format = AV_PIX_FMT_YUV420P9;
+                break;
+            case 10:
+                if (CHROMA444(h))      s->format = AV_PIX_FMT_YUV444P10;
+                else if (CHROMA422(h)) s->format = AV_PIX_FMT_YUV422P10;
+                else                   s->format = AV_PIX_FMT_YUV420P10;
+                break;
+            case 8:
+                if (CHROMA444(h))      s->format = AV_PIX_FMT_YUV444P;
+                else if (CHROMA422(h)) s->format = AV_PIX_FMT_YUV422P;
+                else                   s->format = AV_PIX_FMT_YUV420P;
+                break;
+            default:
+                s->format = AV_PIX_FMT_NONE;
             }
-            h->sps       = *h->sps_buffers[h->pps.sps_id];
-            h->frame_num = get_bits(&h->gb, h->sps.log2_max_frame_num);
 
-            avctx->profile = ff_h264_get_profile(&h->sps);
-            avctx->level   = h->sps.level_idc;
+            avctx->profile = ff_h264_get_profile(sps);
+            avctx->level   = sps->level_idc;
 
-            if (h->sps.frame_mbs_only_flag) {
+            if (sps->frame_mbs_only_flag) {
                 h->picture_structure = PICT_FRAME;
             } else {
-                if (get_bits1(&h->gb)) { // field_pic_flag
-                    h->picture_structure = PICT_TOP_FIELD + get_bits1(&h->gb); // bottom_field_flag
+                if (get_bits1(&nal.gb)) { // field_pic_flag
+                    h->picture_structure = PICT_TOP_FIELD + get_bits1(&nal.gb); // bottom_field_flag
                 } else {
                     h->picture_structure = PICT_FRAME;
                 }
             }
 
             if (h->nal_unit_type == NAL_IDR_SLICE)
-                get_ue_golomb(&h->gb); /* idr_pic_id */
-            if (h->sps.poc_type == 0) {
-                h->poc_lsb = get_bits(&h->gb, h->sps.log2_max_poc_lsb);
+                get_ue_golomb(&nal.gb); /* idr_pic_id */
+            if (sps->poc_type == 0) {
+                h->poc_lsb = get_bits(&nal.gb, sps->log2_max_poc_lsb);
 
-                if (h->pps.pic_order_present == 1 &&
+                if (p->ps.pps->pic_order_present == 1 &&
                     h->picture_structure == PICT_FRAME)
-                    h->delta_poc_bottom = get_se_golomb(&h->gb);
+                    h->delta_poc_bottom = get_se_golomb(&nal.gb);
             }
 
-            if (h->sps.poc_type == 1 &&
-                !h->sps.delta_pic_order_always_zero_flag) {
-                h->delta_poc[0] = get_se_golomb(&h->gb);
+            if (sps->poc_type == 1 &&
+                !sps->delta_pic_order_always_zero_flag) {
+                h->delta_poc[0] = get_se_golomb(&nal.gb);
 
-                if (h->pps.pic_order_present == 1 &&
+                if (p->ps.pps->pic_order_present == 1 &&
                     h->picture_structure == PICT_FRAME)
-                    h->delta_poc[1] = get_se_golomb(&h->gb);
+                    h->delta_poc[1] = get_se_golomb(&nal.gb);
             }
 
             /* Decode POC of this picture.
@@ -316,9 +383,9 @@ static inline int parse_nal_units(AVCodecParserContext *s,
              *        Maybe, we should parse all undisposable non-IDR slice of this
              *        picture until encountering MMCO_RESET in a slice of it. */
             if (h->nal_ref_idc && h->nal_unit_type != NAL_IDR_SLICE) {
-                got_reset = scan_mmco_reset(s);
+                got_reset = scan_mmco_reset(s, &nal.gb);
                 if (got_reset < 0)
-                    return got_reset;
+                    goto fail;
             }
 
             /* Set up the prev_ values for decoding POC of the next picture. */
@@ -335,7 +402,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                 }
             }
 
-            if (h->sps.pic_struct_present_flag) {
+            if (sps->pic_struct_present_flag) {
                 switch (h->sei_pic_struct) {
                 case SEI_PIC_STRUCT_TOP_FIELD:
                 case SEI_PIC_STRUCT_BOTTOM_FIELD:
@@ -366,7 +433,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
 
             if (h->picture_structure == PICT_FRAME) {
                 s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
-                if (h->sps.pic_struct_present_flag) {
+                if (sps->pic_struct_present_flag) {
                     switch (h->sei_pic_struct) {
                     case SEI_PIC_STRUCT_TOP_BOTTOM:
                     case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
@@ -396,12 +463,15 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                 s->field_order = AV_FIELD_UNKNOWN;
             }
 
+            av_freep(&nal.rbsp_buffer);
             return 0; /* no need to evaluate the rest */
         }
         buf += consumed;
     }
     /* didn't find a picture! */
     av_log(h->avctx, AV_LOG_ERROR, "missing picture in access unit\n");
+fail:
+    av_freep(&nal.rbsp_buffer);
     return -1;
 }
 
@@ -499,23 +569,35 @@ static int h264_split(AVCodecContext *avctx,
     return 0;
 }
 
-static void close(AVCodecParserContext *s)
+static void h264_close(AVCodecParserContext *s)
 {
     H264ParseContext *p = s->priv_data;
     H264Context      *h = &p->h;
     ParseContext *pc = &p->pc;
+    int i;
 
     av_free(pc->buffer);
     ff_h264_free_context(h);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(p->ps.sps_list); i++)
+        av_buffer_unref(&p->ps.sps_list[i]);
+
+    for (i = 0; i < FF_ARRAY_ELEMS(p->ps.pps_list); i++)
+        av_buffer_unref(&p->ps.pps_list[i]);
 }
 
 static av_cold int init(AVCodecParserContext *s)
 {
     H264ParseContext *p = s->priv_data;
     H264Context      *h = &p->h;
-    h->thread_context[0]   = h;
+
+    h->slice_ctx = av_mallocz(sizeof(*h->slice_ctx));
+    if (!h->slice_ctx)
+        return 0;
+    h->nb_slice_ctx = 1;
+
     h->slice_context_count = 1;
-    ff_h264dsp_init(&h->h264dsp, 8, 1);
+    ff_h264dsp_init(&p->h264dsp, 8, 1);
     return 0;
 }
 
@@ -524,6 +606,6 @@ AVCodecParser ff_h264_parser = {
     .priv_data_size = sizeof(H264ParseContext),
     .parser_init    = init,
     .parser_parse   = h264_parse,
-    .parser_close   = close,
+    .parser_close   = h264_close,
     .split          = h264_split,
 };