Merge remote-tracking branch 'qatar/master'

* qatar/master:
  h264: error out on invalid bitdepth.
  aacsbr: use a swap index for the Y matrix rather than copy buffers.
  huffyuv: do not abort on unknown pix_fmt; instead, return an error.
  lcl: return negative error codes on decode_init() errors.
  rtpenc: Use MB info side data for splitting H263 packets for RFC 2190
  h263enc: Add an option for outputting info about MBs as side data
  avpacket: Add a function for shrinking already allocated side data
  nellymoserdec: Saner and faster IMDCT windowing

Conflicts:
	doc/APIchanges
	libavcodec/avpacket.c
	libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>

doc/APIchanges

@@ -13,7 +13,6 @@ libavutil:   2011-04-18
 
 API changes, most recent first:
 
-<<<<<<< HEAD
 2012-02-21 - xxxxxxx - lavc 54.4.100
   Add av_get_pcm_codec() function.
 
@@ -36,8 +35,9 @@ API changes, most recent first:
 2012-01-24 - xxxxxxx - lavfi 2.60.100
   Add avfilter_graph_dump.
 
-||||||| merged common ancestors
-=======
+2012-xx-xx - xxxxxxx - lavc 54.3.0 - avcodec.h
+  Add av_packet_shrink_side_data.
+
 2012-xx-xx - xxxxxxx - lavf 54.2.0 - avformat.h
   Add AVStream.attached_pic and AV_DISPOSITION_ATTACHED_PIC,
   used for dealing with attached pictures/cover art.

libavcodec/aacsbr.c

@@ -1353,8 +1353,8 @@ static int sbr_hf_gen(AACContext *ac, SpectralBandReplication *sbr,
 
 /// Generate the subband filtered lowband
 static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][38][64],
-                     const float X_low[32][40][2], const float Y[2][38][64][2],
-                     int ch)
+                     const float Y0[38][64][2], const float Y1[38][64][2],
+                     const float X_low[32][40][2], int ch)
 {
     int k, i;
     const int i_f = 32;
@@ -1368,8 +1368,8 @@ static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][38][64],
     }
     for (; k < sbr->kx[0] + sbr->m[0]; k++) {
         for (i = 0; i < i_Temp; i++) {
-            X[0][i][k] = Y[0][i + i_f][k][0];
-            X[1][i][k] = Y[0][i + i_f][k][1];
+            X[0][i][k] = Y0[i + i_f][k][0];
+            X[1][i][k] = Y0[i + i_f][k][1];
         }
     }
 
@@ -1381,8 +1381,8 @@ static int sbr_x_gen(SpectralBandReplication *sbr, float X[2][38][64],
     }
     for (; k < sbr->kx[1] + sbr->m[1]; k++) {
         for (i = i_Temp; i < i_f; i++) {
-            X[0][i][k] = Y[1][i][k][0];
-            X[1][i][k] = Y[1][i][k][1];
+            X[0][i][k] = Y1[i][k][0];
+            X[1][i][k] = Y1[i][k][1];
         }
     }
     return 0;
@@ -1542,7 +1542,8 @@ static void sbr_gain_calc(AACContext *ac, SpectralBandReplication *sbr,
 }
 
 /// Assembling HF Signals (14496-3 sp04 p220)
-static void sbr_hf_assemble(float Y[2][38][64][2], const float X_high[64][40][2],
+static void sbr_hf_assemble(float Y1[38][64][2],
+                            const float X_high[64][40][2],
                             SpectralBandReplication *sbr, SBRData *ch_data,
                             const int e_a[2])
 {
@@ -1564,7 +1565,6 @@ static void sbr_hf_assemble(float Y[2][38][64][2], const float X_high[64][40][2]
     float (*g_temp)[48] = ch_data->g_temp, (*q_temp)[48] = ch_data->q_temp;
     int indexnoise = ch_data->f_indexnoise;
     int indexsine  = ch_data->f_indexsine;
-    memcpy(Y[0], Y[1], sizeof(Y[0]));
 
     if (sbr->reset) {
         for (i = 0; i < h_SL; i++) {
@@ -1607,18 +1607,18 @@ static void sbr_hf_assemble(float Y[2][38][64][2], const float X_high[64][40][2]
                 q_filt = q_temp[i];
             }
 
-            sbr->dsp.hf_g_filt(Y[1][i] + kx, X_high + kx, g_filt, m_max,
+            sbr->dsp.hf_g_filt(Y1[i] + kx, X_high + kx, g_filt, m_max,
                                i + ENVELOPE_ADJUSTMENT_OFFSET);
 
             if (e != e_a[0] && e != e_a[1]) {
-                sbr->dsp.hf_apply_noise[indexsine](Y[1][i] + kx, sbr->s_m[e],
+                sbr->dsp.hf_apply_noise[indexsine](Y1[i] + kx, sbr->s_m[e],
                                                    q_filt, indexnoise,
                                                    kx, m_max);
             } else {
                 for (m = 0; m < m_max; m++) {
-                    Y[1][i][m + kx][0] +=
+                    Y1[i][m + kx][0] +=
                         sbr->s_m[e][m] * phi[0][indexsine];
-                    Y[1][i][m + kx][1] +=
+                    Y1[i][m + kx][1] +=
                         sbr->s_m[e][m] * (phi[1][indexsine] * phi_sign);
                     phi_sign = -phi_sign;
                 }
@@ -1658,12 +1658,17 @@ void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac,
             sbr_mapping(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
             sbr_env_estimate(sbr->e_curr, sbr->X_high, sbr, &sbr->data[ch]);
             sbr_gain_calc(ac, sbr, &sbr->data[ch], sbr->data[ch].e_a);
-            sbr_hf_assemble(sbr->data[ch].Y, sbr->X_high, sbr, &sbr->data[ch],
+            sbr->data[ch].Ypos ^= 1;
+            sbr_hf_assemble(sbr->data[ch].Y[sbr->data[ch].Ypos],
+                            sbr->X_high, sbr, &sbr->data[ch],
                             sbr->data[ch].e_a);
         }
 
         /* synthesis */
-        sbr_x_gen(sbr, sbr->X[ch], sbr->X_low, sbr->data[ch].Y, ch);
+        sbr_x_gen(sbr, sbr->X[ch],
+                  sbr->data[ch].Y[1-sbr->data[ch].Ypos],
+                  sbr->data[ch].Y[  sbr->data[ch].Ypos],
+                  sbr->X_low, ch);
     }
 
     if (ac->m4ac.ps == 1) {

libavcodec/avcodec.h

@@ -772,6 +772,7 @@ enum AVPacketSideDataType {
     AV_PKT_DATA_PALETTE,
     AV_PKT_DATA_NEW_EXTRADATA,
     AV_PKT_DATA_PARAM_CHANGE,
+    AV_PKT_DATA_H263_MB_INFO,
 };
 
 typedef struct AVPacket {
@@ -854,6 +855,24 @@ typedef struct AVPacket {
  *     s32le height
  */
 
+/**
+ * An AV_PKT_DATA_H263_MB_INFO side data packet contains a number of
+ * structures with info about macroblocks relevant to splitting the
+ * packet into smaller packets on macroblock edges (e.g. as for RFC 2190).
+ * That is, it does not necessarily contain info about all macroblocks,
+ * as long as the distance between macroblocks in the info is smaller
+ * than the target payload size.
+ * Each MB info structure is 12 bytes, and is laid out as follows:
+ * u32le bit offset from the start of the packet
+ * u8    current quantizer at the start of the macroblock
+ * u8    GOB number
+ * u16le macroblock address within the GOB
+ * u8    horizontal MV predictor
+ * u8    vertical MV predictor
+ * u8    horizontal MV predictor for block number 3
+ * u8    vertical MV predictor for block number 3
+ */
+
 enum AVSideDataParamChangeFlags {
     AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT  = 0x0001,
     AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT = 0x0002,
@@ -3149,6 +3168,17 @@ void av_free_packet(AVPacket *pkt);
 uint8_t* av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
                                  int size);
 
+/**
+ * Shrink the already allocated side data buffer
+ *
+ * @param pkt packet
+ * @param type side information type
+ * @param size new side information size
+ * @return 0 on success, < 0 on failure
+ */
+int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+                               int size);
+
 /**
  * Get side information from packet.
  *

libavcodec/avpacket.c

@@ -279,3 +279,19 @@ int av_packet_split_side_data(AVPacket *pkt){
     }
     return 0;
 }
+
+int av_packet_shrink_side_data(AVPacket *pkt, enum AVPacketSideDataType type,
+                               int 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);
+}

libavcodec/h264.c

@@ -2692,11 +2692,6 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
     s->avctx->level   = h->sps.level_idc;
     s->avctx->refs    = h->sps.ref_frame_count;
 
-    if(h == h0 && h->dequant_coeff_pps != pps_id){
-        h->dequant_coeff_pps = pps_id;
-        init_dequant_tables(h);
-    }
-
     s->mb_width= h->sps.mb_width;
     s->mb_height= h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
 
@@ -2791,7 +2786,7 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
                 else
                     s->avctx->pix_fmt = PIX_FMT_YUV420P10;
                 break;
-            default:
+            case 8:
                 if (CHROMA444){
                     s->avctx->pix_fmt = s->avctx->color_range == AVCOL_RANGE_JPEG ? PIX_FMT_YUVJ444P : PIX_FMT_YUV444P;
                     if (s->avctx->colorspace == AVCOL_SPC_RGB) {
@@ -2810,6 +2805,11 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
                                                              hwaccel_pixfmt_list_h264_jpeg_420 :
                                                              ff_hwaccel_pixfmt_list_420);
                 }
+                break;
+            default:
+                av_log(s->avctx, AV_LOG_ERROR,
+                       "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
+                return AVERROR_INVALIDDATA;
         }
 
         s->avctx->hwaccel = ff_find_hwaccel(s->avctx->codec->id, s->avctx->pix_fmt);
@@ -2855,6 +2855,11 @@ static int decode_slice_header(H264Context *h, H264Context *h0){
         }
     }
 
+    if(h == h0 && h->dequant_coeff_pps != pps_id){
+        h->dequant_coeff_pps = pps_id;
+        init_dequant_tables(h);
+    }
+
     h->frame_num= get_bits(&s->gb, h->sps.log2_max_frame_num);
 
     h->mb_mbaff = 0;

libavcodec/huffyuv.c

@@ -543,7 +543,7 @@ s->bgr32=1;
         }
         break;
     default:
-        assert(0);
+        return AVERROR_INVALIDDATA;
     }
 
     alloc_temp(s);

libavcodec/lcldec.c

@@ -488,7 +488,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     avcodec_get_frame_defaults(&c->pic);
     if (avctx->extradata_size < 8) {
         av_log(avctx, AV_LOG_ERROR, "Extradata size too small.\n");
-        return 1;
+        return AVERROR_INVALIDDATA;
     }
 
     /* Check codec type */
@@ -537,7 +537,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
         break;
     default:
         av_log(avctx, AV_LOG_ERROR, "Unsupported image format %d.\n", c->imgtype);
-        return 1;
+        return AVERROR_INVALIDDATA;
     }
 
     /* Detect compression method */
@@ -554,7 +554,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
             break;
         default:
             av_log(avctx, AV_LOG_ERROR, "Unsupported compression format for MSZH (%d).\n", c->compression);
-            return 1;
+            return AVERROR_INVALIDDATA;
         }
         break;
 #if CONFIG_ZLIB_DECODER
@@ -572,7 +572,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
         default:
             if (c->compression < Z_NO_COMPRESSION || c->compression > Z_BEST_COMPRESSION) {
                 av_log(avctx, AV_LOG_ERROR, "Unsupported compression level for ZLIB: (%d).\n", c->compression);
-                return 1;
+                return AVERROR_INVALIDDATA;
             }
             av_log(avctx, AV_LOG_DEBUG, "Compression level for ZLIB: (%d).\n", c->compression);
         }
@@ -580,14 +580,14 @@ static av_cold int decode_init(AVCodecContext *avctx)
 #endif
     default:
         av_log(avctx, AV_LOG_ERROR, "BUG! Unknown codec in compression switch.\n");
-        return 1;
+        return AVERROR_INVALIDDATA;
     }
 
     /* Allocate decompression buffer */
     if (c->decomp_size) {
         if ((c->decomp_buf = av_malloc(max_decomp_size)) == NULL) {
             av_log(avctx, AV_LOG_ERROR, "Can't allocate decompression buffer.\n");
-            return 1;
+            return AVERROR(ENOMEM);
         }
     }
 
@@ -613,7 +613,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
         if (zret != Z_OK) {
             av_log(avctx, AV_LOG_ERROR, "Inflate init error: %d\n", zret);
             av_freep(&c->decomp_buf);
-            return 1;
+            return AVERROR_UNKNOWN;
         }
     }
 #endif

libavcodec/mpegvideo.h

@@ -511,6 +511,10 @@ typedef struct MpegEncContext {
     int gob_index;
     int obmc;                       ///< overlapped block motion compensation
     int showed_packed_warning;      ///< flag for having shown the warning about divxs invalid b frames
+    int mb_info;                    ///< interval for outputting info about mb offsets as side data
+    int prev_mb_info, last_mb_info;
+    uint8_t *mb_info_ptr;
+    int mb_info_size;
 
     /* H.263+ specific */
     int umvplus;                    ///< == H263+ && unrestricted_mv

libavcodec/mpegvideo_enc.c

@@ -43,6 +43,7 @@
 #include "flv.h"
 #include "mpeg4video.h"
 #include "internal.h"
+#include "bytestream.h"
 #include <limits.h>
 #include "sp5x.h"
 
@@ -1437,6 +1438,12 @@ int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
         if (!pkt->data &&
             (ret = ff_alloc_packet(pkt, s->mb_width*s->mb_height*(MAX_MB_BYTES+100)+10000)) < 0)
             return ret;
+        if (s->mb_info) {
+            s->mb_info_ptr = av_packet_new_side_data(pkt,
+                                 AV_PKT_DATA_H263_MB_INFO,
+                                 s->mb_width*s->mb_height*12);
+            s->prev_mb_info = s->last_mb_info = s->mb_info_size = 0;
+        }
 
         for (i = 0; i < context_count; i++) {
             int start_y = s->thread_context[i]->start_mb_y;
@@ -1604,6 +1611,8 @@ vbv_retry:
             pkt->dts = pkt->pts;
         if (s->current_picture.f.key_frame)
             pkt->flags |= AV_PKT_FLAG_KEY;
+        if (s->mb_info)
+            av_packet_shrink_side_data(pkt, AV_PKT_DATA_H263_MB_INFO, s->mb_info_size);
     } else {
         assert((put_bits_ptr(&s->pb) == s->pb.buf));
         s->frame_bits = 0;
@@ -2348,6 +2357,49 @@ static void write_slice_end(MpegEncContext *s){
         s->misc_bits+= get_bits_diff(s);
 }
 
+static void write_mb_info(MpegEncContext *s)
+{
+    uint8_t *ptr = s->mb_info_ptr + s->mb_info_size - 12;
+    int offset = put_bits_count(&s->pb);
+    int mba  = s->mb_x + s->mb_width * (s->mb_y % s->gob_index);
+    int gobn = s->mb_y / s->gob_index;
+    int pred_x, pred_y;
+    if (CONFIG_H263_ENCODER)
+        ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
+    bytestream_put_le32(&ptr, offset);
+    bytestream_put_byte(&ptr, s->qscale);
+    bytestream_put_byte(&ptr, gobn);
+    bytestream_put_le16(&ptr, mba);
+    bytestream_put_byte(&ptr, pred_x); /* hmv1 */
+    bytestream_put_byte(&ptr, pred_y); /* vmv1 */
+    /* 4MV not implemented */
+    bytestream_put_byte(&ptr, 0); /* hmv2 */
+    bytestream_put_byte(&ptr, 0); /* vmv2 */
+}
+
+static void update_mb_info(MpegEncContext *s, int startcode)
+{
+    if (!s->mb_info)
+        return;
+    if (put_bits_count(&s->pb) - s->prev_mb_info*8 >= s->mb_info*8) {
+        s->mb_info_size += 12;
+        s->prev_mb_info = s->last_mb_info;
+    }
+    if (startcode) {
+        s->prev_mb_info = put_bits_count(&s->pb)/8;
+        /* This might have incremented mb_info_size above, and we return without
+         * actually writing any info into that slot yet. But in that case,
+         * this will be called again at the start of the after writing the
+         * start code, actually writing the mb info. */
+        return;
+    }
+
+    s->last_mb_info = put_bits_count(&s->pb)/8;
+    if (!s->mb_info_size)
+        s->mb_info_size += 12;
+    write_mb_info(s);
+}
+
 static int encode_thread(AVCodecContext *c, void *arg){
     MpegEncContext *s= *(void**)arg;
     int mb_x, mb_y, pdif = 0;
@@ -2498,6 +2550,7 @@ static int encode_thread(AVCodecContext *c, void *arg){
                         int number_mb = (mb_y - s->resync_mb_y)*s->mb_width + mb_x - s->resync_mb_x;
                         s->avctx->rtp_callback(s->avctx, s->ptr_lastgob, current_packet_size, number_mb);
                     }
+                    update_mb_info(s, 1);
 
                     switch(s->codec_id){
                     case CODEC_ID_MPEG4:
@@ -2541,6 +2594,8 @@ static int encode_thread(AVCodecContext *c, void *arg){
             s->mb_skipped=0;
             s->dquant=0; //only for QP_RD
 
+            update_mb_info(s, 0);
+
             if (mb_type & (mb_type-1) || (s->mpv_flags & FF_MPV_FLAG_QP_RD)) { // more than 1 MB type possible or FF_MPV_FLAG_QP_RD
                 int next_block=0;
                 int pb_bits_count, pb2_bits_count, tex_pb_bits_count;
@@ -4117,6 +4172,7 @@ int ff_dct_quantize_c(MpegEncContext *s,
 static const AVOption h263_options[] = {
     { "obmc",         "use overlapped block motion compensation.", OFFSET(obmc), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE },
     { "structured_slices","Write slice start position at every GOB header instead of just GOB number.", OFFSET(h263_slice_structured), AV_OPT_TYPE_INT, { 0 }, 0, 1, VE},
+    { "mb_info",      "emit macroblock info for RFC 2190 packetization, the parameter value is the maximum payload size", OFFSET(mb_info), AV_OPT_TYPE_INT, { 0 }, 0, INT_MAX, VE },
     FF_MPV_COMMON_OPTS
     { NULL },
 };

libavcodec/nellymoserdec.c

@@ -49,14 +49,15 @@ typedef struct NellyMoserDecodeContext {
     AVCodecContext* avctx;
     AVFrame         frame;
     float          *float_buf;
-    DECLARE_ALIGNED(16, float, state)[NELLY_BUF_LEN];
     AVLFG           random_state;
     GetBitContext   gb;
     float           scale_bias;
     DSPContext      dsp;
     FFTContext      imdct_ctx;
     FmtConvertContext fmt_conv;
-    DECLARE_ALIGNED(32, float, imdct_out)[NELLY_BUF_LEN * 2];
+    DECLARE_ALIGNED(32, float, imdct_buf)[2][NELLY_BUF_LEN];
+    float          *imdct_out;
+    float          *imdct_prev;
 } NellyMoserDecodeContext;
 
 static void nelly_decode_block(NellyMoserDecodeContext *s,
@@ -106,12 +107,9 @@ static void nelly_decode_block(NellyMoserDecodeContext *s,
         memset(&aptr[NELLY_FILL_LEN], 0,
                (NELLY_BUF_LEN - NELLY_FILL_LEN) * sizeof(float));
 
-        s->imdct_ctx.imdct_calc(&s->imdct_ctx, s->imdct_out, aptr);
-        /* XXX: overlapping and windowing should be part of a more
-           generic imdct function */
-        s->dsp.vector_fmul_reverse(s->state, s->state, ff_sine_128, NELLY_BUF_LEN);
-        s->dsp.vector_fmul_add(aptr, s->imdct_out, ff_sine_128, s->state, NELLY_BUF_LEN);
-        memcpy(s->state, s->imdct_out + NELLY_BUF_LEN, sizeof(float)*NELLY_BUF_LEN);
+        s->imdct_ctx.imdct_half(&s->imdct_ctx, s->imdct_out, aptr);
+        s->dsp.vector_fmul_window(aptr, s->imdct_prev + NELLY_BUF_LEN/2, s->imdct_out, ff_sine_128, NELLY_BUF_LEN/2);
+        FFSWAP(float *, s->imdct_out, s->imdct_prev);
     }
 }
 
@@ -119,6 +117,8 @@ static av_cold int decode_init(AVCodecContext * avctx) {
     NellyMoserDecodeContext *s = avctx->priv_data;
 
     s->avctx = avctx;
+    s->imdct_out = s->imdct_buf[0];
+    s->imdct_prev = s->imdct_buf[1];
     av_lfg_init(&s->random_state, 0);
     ff_mdct_init(&s->imdct_ctx, 8, 1, 1.0);
 

libavcodec/sbr.h

@@ -88,6 +88,7 @@ typedef struct {
     ///QMF values of the original signal
     float              W[2][32][32][2];
     ///QMF output of the HF adjustor
+    int                Ypos;
     DECLARE_ALIGNED(16, float, Y)[2][38][64][2];
     DECLARE_ALIGNED(16, float, g_temp)[42][48];
     float              q_temp[42][48];

libavcodec/version.h

@@ -21,7 +21,7 @@
 #define AVCODEC_VERSION_H
 
 #define LIBAVCODEC_VERSION_MAJOR 54
-#define LIBAVCODEC_VERSION_MINOR  4
+#define LIBAVCODEC_VERSION_MINOR  5
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavformat/rtpenc.c

@@ -453,7 +453,11 @@ static int rtp_write_packet(AVFormatContext *s1, AVPacket *pkt)
         break;
     case CODEC_ID_H263:
         if (s->flags & FF_RTP_FLAG_RFC2190) {
-            ff_rtp_send_h263_rfc2190(s1, pkt->data, size);
+            int mb_info_size = 0;
+            const uint8_t *mb_info =
+                av_packet_get_side_data(pkt, AV_PKT_DATA_H263_MB_INFO,
+                                        &mb_info_size);
+            ff_rtp_send_h263_rfc2190(s1, pkt->data, size, mb_info, mb_info_size);
             break;
         }
         /* Fallthrough */

libavformat/rtpenc.h

@@ -78,7 +78,8 @@ void ff_rtp_send_data(AVFormatContext *s1, const uint8_t *buf1, int len, int m);
 
 void ff_rtp_send_h264(AVFormatContext *s1, const uint8_t *buf1, int size);
 void ff_rtp_send_h263(AVFormatContext *s1, const uint8_t *buf1, int size);
-void ff_rtp_send_h263_rfc2190(AVFormatContext *s1, const uint8_t *buf1, int size);
+void ff_rtp_send_h263_rfc2190(AVFormatContext *s1, const uint8_t *buf1, int size,
+                              const uint8_t *mb_info, int mb_info_size);
 void ff_rtp_send_aac(AVFormatContext *s1, const uint8_t *buff, int size);
 void ff_rtp_send_latm(AVFormatContext *s1, const uint8_t *buff, int size);
 void ff_rtp_send_amr(AVFormatContext *s1, const uint8_t *buff, int size);

libavformat/rtpenc_h263_rfc2190.c

@@ -34,8 +34,15 @@ struct H263Info {
     int tr;
 };
 
+struct H263State {
+    int gobn;
+    int mba;
+    int hmv1, vmv1, hmv2, vmv2;
+    int quant;
+};
+
 static void send_mode_a(AVFormatContext *s1, const struct H263Info *info,
-                        const uint8_t *buf, int len, int m)
+                        const uint8_t *buf, int len, int ebits, int m)
 {
     RTPMuxContext *s = s1->priv_data;
     PutBitContext pb;
@@ -44,7 +51,7 @@ static void send_mode_a(AVFormatContext *s1, const struct H263Info *info,
     put_bits(&pb, 1, 0); /* F - 0, mode A */
     put_bits(&pb, 1, 0); /* P - 0, normal I/P */
     put_bits(&pb, 3, 0); /* SBIT - 0 bits */
-    put_bits(&pb, 3, 0); /* EBIT - 0 bits */
+    put_bits(&pb, 3, ebits); /* EBIT */
     put_bits(&pb, 3, info->src); /* SRC - source format */
     put_bits(&pb, 1, info->i); /* I - inter/intra */
     put_bits(&pb, 1, info->u); /* U - unrestricted motion vector */
@@ -60,12 +67,47 @@ static void send_mode_a(AVFormatContext *s1, const struct H263Info *info,
     ff_rtp_send_data(s1, s->buf, len + 4, m);
 }
 
-void ff_rtp_send_h263_rfc2190(AVFormatContext *s1, const uint8_t *buf, int size)
+static void send_mode_b(AVFormatContext *s1, const struct H263Info *info,
+                        const struct H263State *state, const uint8_t *buf,
+                        int len, int sbits, int ebits, int m)
+{
+    RTPMuxContext *s = s1->priv_data;
+    PutBitContext pb;
+
+    init_put_bits(&pb, s->buf, 64);
+    put_bits(&pb, 1, 1); /* F - 1, mode B */
+    put_bits(&pb, 1, 0); /* P - 0, mode B */
+    put_bits(&pb, 3, sbits); /* SBIT - 0 bits */
+    put_bits(&pb, 3, ebits); /* EBIT - 0 bits */
+    put_bits(&pb, 3, info->src); /* SRC - source format */
+    put_bits(&pb, 5, state->quant); /* QUANT - quantizer for the first MB */
+    put_bits(&pb, 5, state->gobn); /* GOBN - GOB number */
+    put_bits(&pb, 9, state->mba); /* MBA - MB address */
+    put_bits(&pb, 2, 0); /* R - reserved */
+    put_bits(&pb, 1, info->i); /* I - inter/intra */
+    put_bits(&pb, 1, info->u); /* U - unrestricted motion vector */
+    put_bits(&pb, 1, info->s); /* S - syntax-baesd arithmetic coding */
+    put_bits(&pb, 1, info->a); /* A - advanced prediction */
+    put_bits(&pb, 7, state->hmv1); /* HVM1 - horizontal motion vector 1 */
+    put_bits(&pb, 7, state->vmv1); /* VMV1 - vertical motion vector 1 */
+    put_bits(&pb, 7, state->hmv2); /* HVM2 - horizontal motion vector 2 */
+    put_bits(&pb, 7, state->vmv2); /* VMV2 - vertical motion vector 2 */
+    flush_put_bits(&pb);
+    memcpy(s->buf + 8, buf, len);
+
+    ff_rtp_send_data(s1, s->buf, len + 8, m);
+}
+
+void ff_rtp_send_h263_rfc2190(AVFormatContext *s1, const uint8_t *buf, int size,
+                              const uint8_t *mb_info, int mb_info_size)
 {
     RTPMuxContext *s = s1->priv_data;
-    int len;
+    int len, sbits = 0, ebits = 0;
     GetBitContext gb;
     struct H263Info info = { 0 };
+    struct H263State state = { 0 };
+    int mb_info_pos = 0, mb_info_count = mb_info_size / 12;
+    const uint8_t *buf_base = buf;
 
     s->timestamp = s->cur_timestamp;
 
@@ -83,22 +125,71 @@ void ff_rtp_send_h263_rfc2190(AVFormatContext *s1, const uint8_t *buf, int size)
     }
 
     while (size > 0) {
-        len = FFMIN(s->max_payload_size - 4, size);
+        struct H263State packet_start_state = state;
+        len = FFMIN(s->max_payload_size - 8, size);
 
         /* Look for a better place to split the frame into packets. */
         if (len < size) {
             const uint8_t *end = ff_h263_find_resync_marker_reverse(buf,
                                                                     buf + len);
             len = end - buf;
-            if (len == s->max_payload_size - 4)
-                av_log(s1, AV_LOG_WARNING,
-                       "No GOB boundary found within MTU size, splitting at "
-                       "a random boundary\n");
+            if (len == s->max_payload_size - 8) {
+                /* Skip mb info prior to the start of the current ptr */
+                while (mb_info_pos < mb_info_count) {
+                    uint32_t pos = AV_RL32(&mb_info[12*mb_info_pos])/8;
+                    if (pos >= buf - buf_base)
+                        break;
+                    mb_info_pos++;
+                }
+                /* Find the first mb info past the end pointer */
+                while (mb_info_pos + 1 < mb_info_count) {
+                    uint32_t pos = AV_RL32(&mb_info[12*(mb_info_pos + 1)])/8;
+                    if (pos >= end - buf_base)
+                        break;
+                    mb_info_pos++;
+                }
+                if (mb_info_pos < mb_info_count) {
+                    const uint8_t *ptr = &mb_info[12*mb_info_pos];
+                    uint32_t bit_pos = AV_RL32(ptr);
+                    uint32_t pos = (bit_pos + 7)/8;
+                    if (pos <= end - buf_base) {
+                        state.quant = ptr[4];
+                        state.gobn  = ptr[5];
+                        state.mba   = AV_RL16(&ptr[6]);
+                        state.hmv1  = (int8_t) ptr[8];
+                        state.vmv1  = (int8_t) ptr[9];
+                        state.hmv2  = (int8_t) ptr[10];
+                        state.vmv2  = (int8_t) ptr[11];
+                        ebits = 8 * pos - bit_pos;
+                        len   = pos - (buf - buf_base);
+                        mb_info_pos++;
+                    } else {
+                        av_log(s1, AV_LOG_ERROR,
+                               "Unable to split H263 packet, use -mb_info %d "
+                               "or lower.\n", s->max_payload_size - 8);
+                    }
+                } else {
+                    av_log(s1, AV_LOG_ERROR, "Unable to split H263 packet, "
+                           "use -mb_info %d or -ps 1.\n",
+                           s->max_payload_size - 8);
+                }
+            }
         }
 
-        send_mode_a(s1, &info, buf, len, len == size);
+        if (size > 2 && !buf[0] && !buf[1])
+            send_mode_a(s1, &info, buf, len, ebits, len == size);
+        else
+            send_mode_b(s1, &info, &packet_start_state, buf, len, sbits,
+                        ebits, len == size);
 
+        if (ebits) {
+            sbits = 8 - ebits;
+            len--;
+        } else {
+            sbits = 0;
+        }
         buf  += len;
         size -= len;
+        ebits = 0;
     }
 }